U.S. patent application number 16/949461 was filed with the patent office on 2021-02-18 for method and apparatus for nr sidelink ss/pbch block.
The applicant listed for this patent is Samsung Electronics Co., Ltd.. Invention is credited to Li Guo, Hongbo Si.
Application Number | 20210051641 16/949461 |
Document ID | / |
Family ID | 1000005178084 |
Filed Date | 2021-02-18 |
![](/patent/app/20210051641/US20210051641A1-20210218-D00000.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00001.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00002.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00003.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00004.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00005.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00006.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00007.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00008.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00009.png)
![](/patent/app/20210051641/US20210051641A1-20210218-D00010.png)
View All Diagrams
United States Patent
Application |
20210051641 |
Kind Code |
A1 |
Si; Hongbo ; et al. |
February 18, 2021 |
METHOD AND APPARATUS FOR NR SIDELINK SS/PBCH BLOCK
Abstract
A method of a first UE comprises: determining a sidelink
synchronization identity (SL-SID) and a set of resources;
generating at least one sidelink synchronization signal and
physical broadcast channel (S-SSB) based on the SL-SID and the set
of resources, wherein each S-SSB of the at least one S-SSB includes
first two symbols for a sidelink primary synchronization signal
(S-PSS) and second two symbols for a sidelink secondary
synchronization signal (S-SSS); generating a first sequence
corresponding to the S-PSS, wherein the first sequence is
determined based on a binary phase shift keying (BPSK) modulated
M-sequence with a 127 of sequence length and a low
cross-correlation with a PSS; generating a second sequence
corresponding to the S-SSS, wherein the second sequence is
determined based on a BPSK modulated Gold-sequence with a 127 of
sequence length; and transmitting, the at least one S-SSB over
sidelink channels established with the second UE.
Inventors: |
Si; Hongbo; (Plano, TX)
; Guo; Li; (Allen, TX) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Samsung Electronics Co., Ltd. |
Suwon-si |
|
KR |
|
|
Family ID: |
1000005178084 |
Appl. No.: |
16/949461 |
Filed: |
October 29, 2020 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
16503409 |
Jul 3, 2019 |
10834708 |
|
|
16949461 |
|
|
|
|
62694860 |
Jul 6, 2018 |
|
|
|
62702603 |
Jul 24, 2018 |
|
|
|
62711148 |
Jul 27, 2018 |
|
|
|
62790253 |
Jan 9, 2019 |
|
|
|
62841371 |
May 1, 2019 |
|
|
|
62841961 |
May 2, 2019 |
|
|
|
62846937 |
May 13, 2019 |
|
|
|
62858423 |
Jun 7, 2019 |
|
|
|
62858522 |
Jun 7, 2019 |
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 72/044 20130101;
H04W 72/02 20130101; H04W 72/0406 20130101; H04W 56/0015 20130101;
H04W 76/14 20180201; H04W 92/18 20130101 |
International
Class: |
H04W 72/04 20090101
H04W072/04; H04W 56/00 20090101 H04W056/00; H04W 72/02 20090101
H04W072/02; H04W 76/14 20180101 H04W076/14 |
Claims
1. A first user equipment (UE) in a wireless communication system,
the first UE comprising: a processor configured to: identify a
first sequence corresponding to a sidelink-primary synchronization
signal (S-PSS) and a second sequence corresponding to a
sidelink-secondary synchronization signal (S-SSS), and identify a
sidelink-synchronization signal and physical broadcast channel
block (S-SSB) including the S-PSS based on the first sequence, the
S-SSS based on the second sequence, a physical sidelink broadcast
channel (PSBCH), and a demodulation reference signal (DMRS) for the
PSBCH; a transceiver operably connected to the processor, the
transceiver configured to transmit, to a second UE, the S-SSB over
sidelink channels, wherein the S-SSB includes two symbols for S-PSS
and two symbols for the S-SSS, wherein the first sequence is
identified based on a predefined value related to cyclic shift, and
a sidelink-synchronization identity (SL-SID), wherein the
predefined value is 22, wherein the two symbols for the S-PSS are
second and third symbols in the S-SSB, and wherein the two symbols
for the S-SSS are fourth and fifth symbols in the S-SSB.
2. The first UE of claim 1, wherein: a symbol for the PSBCH and the
DMRS for the PSBCH is a first symbol in the S-SSB, and symbols for
the PSBCH and the DMRS for the PSBCH are sixth and subsequent
symbols in the S-SSB.
3. The first UE of claim 1, wherein: the transceiver is further
configured to transmit, based on a periodicity, the S-SSB using a
set of resources including time-domain resources that are
configurable within the periodicity, a configuration of the
time-domain resources within the periodicity is indicated via the
PSBCH included in the S-SSB, the first sequence is determined based
on a binary phase shift keying (BPSK) modulated M-sequence with a
sequence length of 127, the second sequence is determined based on
a BPSK modulated Gold-sequence with a sequence length of 127, and
the predefined value is related to a maximum distance from cyclic
shifts used for a primary synchronization signal (PSS).
4. The first UE of claim 1, wherein: the processor further is
configured to: determine the SL-SID and a set of resources; and
identify the S-SSB based on the SL-SID and the set of resources,
the set of resources include frequency-domain resources for
transmitting the S-SSB, and the frequency-domain resources are
pre-configured.
5. The first UE of claim 1, wherein: the first sequence
corresponding to the S-PSS (d_SPSS) is determined by a polynomial
given by: g(x)=x.sup.7+x+1, where a M-sequence is generated with
x(i+7)=x(i+1)+x(i) for i=0, 1, . . . , 119, and the first sequence
corresponding to the S-PSS is given by: d_SPSS(n)=1-2*x(n),
m=(n+43*N_GID{circumflex over ( )}SL+22)mod 127, 0.ltoreq.n<127,
where x(i+7)=x(i+1)+x(i) for i=0, 1, . . . , 119, and x(6:0)=[0 0 0
0 0 0 1].
6. The first UE of claim 1, wherein: the second sequence
corresponding to the S-SSS (d_SSSS) is given by:
d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_1(n_1)), n_0=(n+m_0)mod 127,
n_1=(n+m_1)mod 127, m_0=15*.left brkt-bot.N_ID/112.right brkt-bot.,
m_1=N_ID mod 112, 0.ltoreq.n<127, where: x_0(n_0) is a first
M-sequence given by x_0(i+7)=x_0(i+1)+x_0(i) for i=0, 1, . . . ,
119, and x_0(6:0)=[0 0 0 0 0 0 1]; x_1(n_1) is a second M-sequence
given by x_1(i+7)=x_1(i+1)+x_1(i) for i=0, 1, . . . , 119, and
x_1(6:0)=[0 0 0 0 0 0 1]; and N_ID is a SL-SID.
7. A second user equipment (UE) in a wireless communication system,
the second UE comprising: a transceiver configured to receive, from
a first UE, a sidelink-synchronization signal and physical
broadcast channel block (S-SSB) over sidelink channels; and a
processor operably connected to the transceiver, the processor
configured to identify, from the S-SSB, a sidelink-primary
synchronization signal (S-PSS) identified based on a first
sequence, a second sequence corresponding to a sidelink-secondary
synchronization signal (S-SSS) identified based on a second
sequence, a physical sidelink broadcast channel (PSBCH), and a
demodulation reference signal (DMRS) for the PSBCH; wherein the
S-SSB includes two symbols for S-PSS and two symbols for the S-SSS,
wherein the first sequence is identified based on a predefined
value related to cyclic shift, and a sidelink-synchronization
identity (SL-SID), wherein the predefined value is 22, wherein the
two symbols for the S-PSS are second and third symbols in the
S-SSB, and wherein the two symbols for the S-SSS are fourth and
fifth symbols in the S-SSB.
8. The second UE of claim 7, wherein: a symbol for the PSBCH and
the DMRS for the PSBCH is a first symbol in the S-SSB, and symbols
for the PSBCH and the DMRS for the PSBCH are sixth and subsequent
symbols in the S-SSB.
9. The second UE of claim 7, wherein: the transceiver is further
configured to receive, based on a periodicity, the S-SSB using a
set of resources including time-domain resources that are
configurable within the periodicity, a configuration of the
time-domain resources within the periodicity is identified via the
PSBCH included in the S-SSB, the first sequence is determined based
on a binary phase shift keying (BPSK) modulated M-sequence with a
sequence length of 127, the second sequence is determined based on
a BPSK modulated Gold-sequence with a sequence length of 127, and
the predefined value is related to a maximum distance from cyclic
shifts used for a primary synchronization signal (PSS).
10. The second UE of claim 7, wherein: the S-SSB is identified
based on the SL-SID and a set of resources, the set of resources
include frequency-domain resources for receiving the S-SSB, and the
frequency-domain resources are pre-configured.
11. The second UE of claim 7, wherein: the first sequence
corresponding to the S-PSS (d_SPSS) is determined by a polynomial
given by: g(x)=x.sup.7+x+1, where a M-sequence is generated with
x(i+7)=x(i+1)+x(i) for i=0, 1, . . . , 119, and the first sequence
corresponding to the S-PSS is given by: d_SPSS(n)=1-2*x(n),
m=(n+43*N_GID{circumflex over ( )}SL+22)mod 127, 0.ltoreq.n<127,
where x(i+7)=x(i+1)+x(i) for i=0, 1, . . . , 119, and x(6:0)=[0 0 0
0 0 0 1].
12. The second UE of claim 7, wherein: the second sequence
corresponding to the S-SSS (d_SSSS) is given by:
d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_1(n_1)), n_0=(n+m_0)mod 127,
n_1=(n+m_1)mod 127, m_0=15*.left brkt-bot.N_ID/112.right brkt-bot.,
m_1=N_ID mod 112, 0.ltoreq.n<127, where: x_0(n_0) is a first
M-sequence given by x_0(i+7)=x_0(i+1)+x_0(i) for i=0, 1, . . . ,
119, and x_0(6:0)=[0 0 0 0 0 0 1]; x_1(n_1) is a second M-sequence
given by x_1(i+7)=x_1(i+1)+x_1(i) for i=0, 1, . . . , 119, and
x_1(6:0)=[0 0 0 0 0 0 1]; and N_ID is a SL-SID.
13. A method for operating a first user equipment (UE) in a
wireless communication system, the method comprising: identifying a
first sequence corresponding to a sidelink-primary synchronization
signal (S-PSS) and a second sequence corresponding to a
sidelink-secondary synchronization signal (S-SSS); identifying a
sidelink-synchronization signal and physical broadcast channel
block (S-SSB) including the S-PSS based on the first sequence, the
S-SSS based on the second sequence, a physical sidelink broadcast
channel (PSBCH), and a demodulation reference signal (DMRS) for the
PSBCH; and transmitting, to a second UE, the S-SSB over sidelink
channels, wherein the S-SSB includes two symbols for S-PSS and two
symbols for the S-SSS, wherein the first sequence is identified
based on a predefined value related to cyclic shift, and a
sidelink-synchronization identity (SL-SID), wherein the predefined
value is 22, wherein the two symbols for the S-PSS are second and
third symbols in the S-SSB, and wherein the two symbols for the
S-SSS are fourth and fifth symbols in the S-SSB.
14. The method of claim 13, wherein: a symbol for the PSBCH and the
DMRS for the PSBCH is a first symbol in the S-SSB, and symbols for
the PSBCH and the DMRS for the PSBCH are sixth and subsequent
symbols in the S-SSB.
15. The method of claim 13, wherein: transmitting the S-SSB
comprises transmitting, based on a periodicity, the S-SSB using a
set of resources including time-domain resources that are
configurable within the periodicity, a configuration of the
time-domain resources within the periodicity is indicated via the
PSBCH included in the S-SSB, the first sequence is determined based
on a binary phase shift keying (BPSK) modulated M-sequence with a
sequence length of 127, the second sequence is determined based on
a BPSK modulated Gold-sequence with a sequence length of 127, and
the predefined value is related to a maximum distance from cyclic
shifts used for a primary synchronization signal (PSS).
16. The method of claim 13, further comprising: determining the
SL-SID and a set of resources, wherein identifying the S-SSB
comprises generating the S-SSB based on the SL-SID and the set of
resources, the set of resources include frequency-domain resources
for transmitting the S-SSB, and the frequency-domain resources are
pre-configured.
17. The method of claim 13, wherein: the first sequence
corresponding to the S-PSS (d_SPSS) is determined by a polynomial
given by: g(x)=x.sup.7+x+1, where a M-sequence is generated with
x(i+7)=x(i+1)+x(i) for i=0, 1, . . . , 119, and the first sequence
corresponding to the S-PSS is given by: d_SPSS(n)=1-2*x(n),
m=(n+43*N_GID{circumflex over ( )}SL+22)mod 127, 0.ltoreq.n<127,
where x(i+7)=x(i+1)+x(i) for i=0, 1, . . . , 119, and x(6:0)=[0 0 0
0 0 0 1].
18. The method of claim 13, wherein: the second sequence
corresponding to the S-SSS (d_SSSS) is given by:
d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_1(n_1)), n_0=(n+m_0)mod 127,
n_1=(n+m_1)mod 127, m_0=15*.left brkt-bot.N_ID/112.right brkt-bot.,
m_1=N_ID mod 112, 0.ltoreq.n<127, where: x_0(n_0) is a first
M-sequence given by x_0(i+7)=x_0(i+1)+x_0(i) for i=0, 1, . . . ,
119, and x_0(6:0)=[0 0 0 0 0 0 1]; x_1(n_1) is a second M-sequence
given by x_1(i+7)=x_1(i+1)+x_1(i) for i=0, 1, . . . , 119, and
x_1(6:0)=[0 0 0 0 0 0 1]; and N_ID is a SL-SID.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS AND CLAIM OF PRIORITY
[0001] This application is a continuation of U.S. patent
application Ser. No. 16/503,409, filed on Jul. 3, 2019, which
claims priority to U.S. Provisional Patent Application No.
62/694,860, filed on Jul. 6, 2018; U.S. Provisional Patent
Application No. 62/702,603, filed on Jul. 24, 2018; U.S.
Provisional Patent Application No. 62/711,148, filed on Jul. 27,
2018; U.S. Provisional Patent Application No. 62/790,253, filed on
Jan. 9, 2019; U.S. Provisional Patent Application No. 62/841,371,
filed on May 1, 2019; U.S. Provisional Patent Application No.
62/841,961, filed on May 2, 2019; U.S. Provisional Patent
Application No. 62/846,937, filed on May 13, 2019; U.S. Provisional
Patent Application No. 62/858,423, filed on Jun. 7, 2019; and U.S.
Provisional Patent Application No. 62/858,522, filed on Jun. 7,
2019. The contents of the above-identified patent documents are
incorporated herein by reference.
TECHNICAL FIELD
[0002] The present application relates generally to wireless
communication systems, more specifically, this disclosure relates
to NR sidelink SS/PBCH block.
BACKGROUND
[0003] The present disclosure relates to a pre-5.sup.th-generation
(5G) or 5G communication system to be provided for supporting
higher data rates beyond 4.sup.th-generation (4G) communication
system such as long-term evolution (LTE). Traditionally, cellular
communication networks have been designed to establish wireless
communication links between mobile user equipments (UEs) and fixed
communication infrastructure components (such as base stations
(BSs), enhanced base station (gNB), or access points (APs)) that
serve UEs in a wide or local geographic range. However, a wireless
network can also be implemented by utilizing only device-to-device
(D2D) communication links without the need for fixed infrastructure
components. This type of network is typically referred to as an
"ad-hoc" network. A hybrid communication network can support
devices that connect both to fixed infrastructure components and to
other D2D-enabled devices. While UEs such as smartphones can be
envisioned for D2D networks, a vehicular communication can also be
supported by a communication protocol where vehicles exchange
control or data information with other vehicles or other
infrastructure or UEs. Such a network is referred to as a
vehicle-to-everything (V2X) network. Multiple types of
communication links can be supported by nodes supporting V2X in the
network and can utilize same or different protocols and
systems.
SUMMARY
[0004] The present disclosure relates to a pre-5G or 5G
communication system to be provided for supporting higher data
rates beyond 4G communication system such as LTE. Embodiments of
the present disclosure provide transmission structures and format
in advanced communication systems.
[0005] In one embodiment, a first user equipment (UE) in a wireless
communication system is provided. The first UE comprises at least
one processor configured to: determine a sidelink synchronization
identity (SL-SID) and a set of resources; generate at least one
sidelink synchronization signal and physical broadcast channel
block (S-SSB) based on the SL-SID and the set of resources, wherein
each S-SSB of the at least one S-SSB includes first two symbols for
a sidelink primary synchronization signal (S-PSS) and second two
symbols for a sidelink secondary synchronization signal (S-SSS);
generate a first sequence corresponding to the S-PSS, wherein the
first sequence is determined based on a binary phase shift keying
(BPSK) modulated M-sequence with a 127 of sequence length and a low
cross-correlation with a primary synchronization signal (PSS);
generate a second sequence corresponding to the S-SSS, wherein the
second sequence is determined based on a BPSK modulated
Gold-sequence with a 127 of sequence length. The first UE further
comprises a transceiver operably connected to the at least one
processor, the transceiver configured to transmit, to a second UE,
the at least one S-SSB over sidelink channels established with the
second UE.
[0006] In another embodiment, a second user equipment (UE) in a
wireless communication system is provided. The second UE comprises
a transceiver configured to receive, from a first UE, at least one
sidelink synchronization signal and physical broadcast channel
block (S-SSB) over sidelink channels established with the first UE.
The second UE further comprises at least one processor operably
connected to the transceiver, the at least one processor configured
to: determine a set of resources, wherein the at least one S-SSB is
received based on the set of resources, each S-SSB of the at least
one S-SSB including first two symbols for a sidelink primary
synchronization signal (S-PSS) and second two symbols for a
sidelink secondary synchronization signal (S-SSS); detect a first
sequence corresponding to the S-PSS, the first sequence being
determined based on a binary phase shift keying (BPSK) modulated
M-sequence with a 127 of sequence length and a low
cross-correlation with a primary synchronization signal (PSS);
detect a second sequence corresponding to the S-SSS, the second
sequence being determined based on a BPSK modulated Gold-sequence
with a 127 of sequence length; and determine a sidelink
synchronization identity (SL-SID) based on the detected second
sequence.
[0007] In yet another embodiment, a method of a first user
equipment (UE) in a wireless communication system is provided. The
method comprises determining a sidelink synchronization identity
(SL-SID) and a set of resources; generating at least one sidelink
synchronization signal and physical broadcast channel (S-SSB) based
on the SL-SID and the set of resources, wherein each S-SSB of the
at least one S-SSB includes first two symbols for a sidelink
primary synchronization signal (S-PSS) and second two symbols for a
sidelink secondary synchronization signal (S-SSS); generating a
first sequence corresponding to the S-PSS, wherein the first
sequence is determined based on a binary phase shift keying (BPSK)
modulated M-sequence with a 127 of sequence length and a low
cross-correlation with a primary synchronization signal (PSS);
generating a second sequence corresponding to the S-SSS, wherein
the second sequence is determined based on a BPSK modulated
Gold-sequence with a 127 of sequence length; and transmitting, to a
second UE, the at least one S-SSB over sidelink channels
established with the second UE.
[0008] Other technical features may be readily apparent to one
skilled in the art from the following figures, descriptions, and
claims.
[0009] Before undertaking the DETAILED DESCRIPTION below, it may be
advantageous to set forth definitions of certain words and phrases
used throughout this patent document. The term "couple" and its
derivatives refer to any direct or indirect communication between
two or more elements, whether or not those elements are in physical
contact with one another. The terms "transmit," "receive," and
"communicate," as well as derivatives thereof, encompass both
direct and indirect communication. The terms "include" and
"comprise," as well as derivatives thereof, mean inclusion without
limitation. The term "or" is inclusive, meaning and/or. The phrase
"associated with," as well as derivatives thereof, means to
include, be included within, interconnect with, contain, be
contained within, connect to or with, couple to or with, be
communicable with, cooperate with, interleave, juxtapose, be
proximate to, be bound to or with, have, have a property of, have a
relationship to or with, or the like. The term "controller" means
any device, system or part thereof that controls at least one
operation. Such a controller may be implemented in hardware or a
combination of hardware and software and/or firmware. The
functionality associated with any particular controller may be
centralized or distributed, whether locally or remotely. The phrase
"at least one of," when used with a list of items, means that
different combinations of one or more of the listed items may be
used, and only one item in the list may be needed. For example, "at
least one of: A, B, and C" includes any of the following
combinations: A, B, C, A and B, A and C, B and C, and A and B and
C.
[0010] Moreover, various functions described below can be
implemented or supported by one or more computer programs, each of
which is formed from computer readable program code and embodied in
a computer readable medium. The terms "application" and "program"
refer to one or more computer programs, software components, sets
of instructions, procedures, functions, objects, classes,
instances, related data, or a portion thereof adapted for
implementation in a suitable computer readable program code. The
phrase "computer readable program code" includes any type of
computer code, including source code, object code, and executable
code. The phrase "computer readable medium" includes any type of
medium capable of being accessed by a computer, such as read only
memory (ROM), random access memory (RAM), a hard disk drive, a
compact disc (CD), a digital video disc (DVD), or any other type of
memory. A "non-transitory" computer readable medium excludes wired,
wireless, optical, or other communication links that transport
transitory electrical or other signals. A non-transitory computer
readable medium includes media where data can be permanently stored
and media where data can be stored and later overwritten, such as a
rewritable optical disc or an erasable memory device.
[0011] Definitions for other certain words and phrases are provided
throughout this patent document. Those of ordinary skill in the art
should understand that in many if not most instances, such
definitions apply to prior as well as future uses of such defined
words and phrases.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] For a more complete understanding of the present disclosure
and its advantages, reference is now made to the following
description taken in conjunction with the accompanying drawings, in
which like reference numerals represent like parts:
[0013] FIG. 1 illustrates an example wireless network according to
embodiments of the present disclosure;
[0014] FIG. 2 illustrates an example gNB according to embodiments
of the present disclosure;
[0015] FIG. 3 illustrates an example UE according to embodiments of
the present disclosure;
[0016] FIG. 4 illustrates an example use case of a vehicle-centric
communication network according to illustrative embodiments of the
present disclosure;
[0017] FIG. 5 illustrates an example composition of a sidelink
synchronization subframe in LTE-V2X according to embodiments of the
present disclosure;
[0018] FIG. 6 illustrates an example composition of an SS/PBCH
block according to embodiments of the present disclosure;
[0019] FIG. 7 illustrates an example SS/PBCH block mapping patterns
with respect to subcarrier spacings according to embodiments of the
present disclosure;
[0020] FIG. 8 illustrates example SS/PBCH block locations within a
half according to embodiments of the present disclosure;
[0021] FIG. 9A illustrates an example design of an S-SSB according
to embodiments of the present disclosure;
[0022] FIG. 9B illustrates another example design of an S-SSB
according to embodiments of the present disclosure;
[0023] FIG. 10A illustrates an example S-SSB according to
embodiments of the present disclosure;
[0024] FIG. 10B illustrates another example S-SSB according to
embodiments of the present disclosure;
[0025] FIG. 11 illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0026] FIG. 12A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0027] FIG. 12B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0028] FIG. 12C illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0029] FIG. 13A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0030] FIG. 13B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0031] FIG. 14A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0032] FIG. 14B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0033] FIG. 14C illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0034] FIG. 14D illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0035] FIG. 14E illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0036] FIG. 15A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0037] FIG. 15B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0038] FIG. 15C illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0039] FIG. 16A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0040] FIG. 16B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0041] FIG. 17 illustrates an example time-domain mapping of an
S-SSB burst set according to embodiments of the present
disclosure;
[0042] FIG. 18 illustrates an example PAPR value of S-PSS sequences
according to embodiments of the present disclosure;
[0043] FIG. 19 illustrates another example PAPR value of S-PSS
sequences according to embodiments of the present disclosure;
[0044] FIG. 20 illustrates yet another example PAPR value of S-PSS
sequences according to embodiments of the present disclosure;
[0045] FIG. 21 illustrates an example time-domain mapping of an
S-SSB burst set according to embodiments of the present
disclosure;
[0046] FIG. 22 illustrates another example time-domain mapping of
an S-SSB burst set according to embodiments of the present
disclosure;
[0047] FIG. 23 illustrates another example time-domain mapping of
an S-SSB burst set according to embodiments of the present
disclosure;
[0048] FIG. 24 illustrates another example time-domain mapping of
an S-SSB burst set according to embodiments of the present
disclosure;
[0049] FIG. 25 illustrates an example scrambling of PSBCH according
to embodiments of the present disclosure;
[0050] FIG. 26 illustrates another example scrambling of PSBCH
according to embodiments of the present disclosure;
[0051] FIG. 27 illustrates yet another example scrambling of PSBCH
according to embodiments of the present disclosure;
[0052] FIG. 28 illustrates yet another example scrambling of PSBCH
according to embodiments of the present disclosure;
[0053] FIG. 29 illustrates yet another example scrambling of PSBCH
according to embodiments of the present disclosure;
[0054] FIG. 30 illustrate an example TDM pattern of PSBCH and DMRS
according to embodiments of the present disclosure;
[0055] FIG. 31 illustrates an example S-SSB according to
embodiments of the present disclosure;
[0056] FIG. 32 illustrates another example S-SSB according to
embodiments of the present disclosure;
[0057] FIG. 33A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0058] FIG. 33B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0059] FIG. 34A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0060] FIG. 34B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0061] FIG. 35A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0062] FIG. 35B illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0063] FIG. 36A illustrates yet another example S-SSB according to
embodiments of the present disclosure;
[0064] FIG. 36B illustrates yet another example S-SSB according to
embodiments of the present disclosure; and
[0065] FIG. 37 illustrates an example S-SSB location within a slot
according to embodiments of the present disclosure.
DETAILED DESCRIPTION
[0066] FIG. 1 through FIG. 37, discussed below, and the various
embodiments used to describe the principles of the present
disclosure in this patent document are by way of illustration only
and should not be construed in any way to limit the scope of the
disclosure. Those skilled in the art will understand that the
principles of the present disclosure may be implemented in any
suitably arranged system or device.
[0067] The following documents are hereby incorporated by reference
into the present disclosure as if fully set forth herein: 3GPP TS
38.211 v15.2.0, "NR; Physical channels and modulation;" 3GPP TS
38.212 v15.2.0, "NR; Multiplexing and channel coding;" 3GPP TS
38.213 v15.2.0, "NR; Physical layer procedures for control;" 3GPP
TS 38.214 v15.2.0, "NR; Physical layer procedures for data;" 3GPP
TS 38.331 v15.2.0, "NR; Radio Resource Control (RRC) protocol
specification;" 3GPP TS 36.211 v15.2.0, "E-UTRA; Physical channels
and modulation;" 3GPP TS 36.212 v15.2.0, "E-UTRA; Multiplexing and
Channel coding;" 3GPP TS 36.213 v15.2.0, "E-UTRA; Physical Layer
Procedures;" 3GPP TS 36.331 v15.2.0, "E-UTRA; Radio Resource
Control (RRC) Protocol Specification;"
[0068] FIGS. 1-3 below describe various embodiments implemented in
wireless communications systems and with the use of orthogonal
frequency division multiplexing (OFDM) or orthogonal frequency
division multiple access (OFDMA) communication techniques. The
descriptions of FIGS. 1-3 are not meant to imply physical or
architectural limitations to the manner in which different
embodiments may be implemented. Different embodiments of the
present disclosure may be implemented in any suitably-arranged
communications system.
[0069] FIG. 1 illustrates an example wireless network according to
embodiments of the present disclosure. The embodiment of the
wireless network shown in FIG. 1 is for illustration only. Other
embodiments of the wireless network 100 could be used without
departing from the scope of this disclosure.
[0070] As shown in FIG. 1, the wireless network includes a gNB 101,
a gNB 102, and a gNB 103. The gNB 101 communicates with the gNB 102
and the gNB 103. The gNB 101 also communicates with at least one
network 130, such as the Internet, a proprietary Internet Protocol
(IP) network, or other data network.
[0071] The gNB 102 provides wireless broadband access to the
network 130 for a first plurality of user equipments (UEs) within a
coverage area 120 of the gNB 102. The first plurality of UEs
includes a UE 111, which may be located in a small business (SB); a
UE 112, which may be located in an enterprise (E); a UE 113, which
may be located in a WiFi hotspot (HS); a UE 114, which may be
located in a first residence (R); a UE 115, which may be located in
a second residence (R); and a UE 116, which may be a mobile device
(M), such as a cell phone, a wireless laptop, a wireless PDA, or
the like. The gNB 103 provides wireless broadband access to the
network 130 for a second plurality of UEs within a coverage area
125 of the gNB 103. The second plurality of UEs includes the UE 115
and the UE 116. In some embodiments, one or more of the gNBs
101-103 may communicate with each other and with the UEs 111-116
using 5G, LTE, LTE-A, WiMAX, WiFi, or other wireless communication
techniques.
[0072] Depending on the network type, the term "base station" or
"BS" can refer to any component (or collection of components)
configured to provide wireless access to a network, such as
transmit point (TP), transmit-receive point (TRP), an enhanced base
station (eNodeB or eNB), a 5G base station (gNB), a macrocell, a
femtocell, a WiFi access point (AP), or other wirelessly enabled
devices. Base stations may provide wireless access in accordance
with one or more wireless communication protocols, e.g., 5G 3GPP
new radio interface/access (NR), long term evolution (LTE), LTE
advanced (LTE-A), high speed packet access (HSPA), Wi-Fi
802.11a/b/g/n/ac, etc. For the sake of convenience, the terms "BS"
and "TRP" are used interchangeably in this patent document to refer
to network infrastructure components that provide wireless access
to remote terminals. Also, depending on the network type, the term
"user equipment" or "UE" can refer to any component such as "mobile
station," "subscriber station," "remote terminal," "wireless
terminal," "receive point," or "user device." For the sake of
convenience, the terms "user equipment" and "UE" are used in this
patent document to refer to remote wireless equipment that
wirelessly accesses a BS, whether the UE is a mobile device (such
as a mobile telephone or smartphone) or is normally considered a
stationary device (such as a desktop computer or vending
machine).
[0073] Dotted lines show the approximate extents of the coverage
areas 120 and 125, which are shown as approximately circular for
the purposes of illustration and explanation only. It should be
clearly understood that the coverage areas associated with gNBs,
such as the coverage areas 120 and 125, may have other shapes,
including irregular shapes, depending upon the configuration of the
gNBs and variations in the radio environment associated with
natural and man-made obstructions.
[0074] As described in more detail below, one or more of the UEs
111-116 include circuitry, programing, or a combination thereof,
for reception reliability for data and control information in an
advanced wireless communication system. In certain embodiments, and
one or more of the gNBs 101-103 includes circuitry, programing, or
a combination thereof, for efficient NR sidelink SS/PBCH block
operation in an advanced wireless communication system.
[0075] Although FIG. 1 illustrates one example of a wireless
network, various changes may be made to FIG. 1. For example, the
wireless network could include any number of gNBs and any number of
UEs in any suitable arrangement. Also, the gNB 101 could
communicate directly with any number of UEs and provide those UEs
with wireless broadband access to the network 130. Similarly, each
gNB 102-103 could communicate directly with the network 130 and
provide UEs with direct wireless broadband access to the network
130. Further, the gNBs 101, 102, and/or 103 could provide access to
other or additional external networks, such as external telephone
networks or other types of data networks.
[0076] FIG. 2 illustrates an example gNB 102 according to
embodiments of the present disclosure. The embodiment of the gNB
102 illustrated in FIG. 2 is for illustration only, and the gNBs
101 and 103 of FIG. 1 could have the same or similar configuration.
However, gNBs come in a wide variety of configurations, and FIG. 2
does not limit the scope of this disclosure to any particular
implementation of a gNB.
[0077] As shown in FIG. 2, the gNB 102 includes multiple antennas
205a-205n, multiple RF transceivers 210a-210n, transmit (TX)
processing circuitry 215, and receive (RX) processing circuitry
220. The gNB 102 also includes a controller/processor 225, a memory
230, and a backhaul or network interface 235.
[0078] The RF transceivers 210a-210n receive, from the antennas
205a-205n, incoming RF signals, such as signals transmitted by UEs
in the network 100. The RF transceivers 210a-210n down-convert the
incoming RF signals to generate IF or baseband signals. The IF or
baseband signals are sent to the RX processing circuitry 220, which
generates processed baseband signals by filtering, decoding, and/or
digitizing the baseband or IF signals. The RX processing circuitry
220 transmits the processed baseband signals to the
controller/processor 225 for further processing.
[0079] The TX processing circuitry 215 receives analog or digital
data (such as voice data, web data, e-mail, or interactive video
game data) from the controller/processor 225. The TX processing
circuitry 215 encodes, multiplexes, and/or digitizes the outgoing
baseband data to generate processed baseband or IF signals. The RF
transceivers 210a-210n receive the outgoing processed baseband or
IF signals from the TX processing circuitry 215 and up-converts the
baseband or IF signals to RF signals that are transmitted via the
antennas 205a-205n.
[0080] The controller/processor 225 can include one or more
processors or other processing devices that control the overall
operation of the gNB 102. For example, the controller/processor 225
could control the reception of forward channel signals and the
transmission of reverse channel signals by the RF transceivers
210a-210n, the RX processing circuitry 220, and the TX processing
circuitry 215 in accordance with well-known principles. The
controller/processor 225 could support additional functions as
well, such as more advanced wireless communication functions. For
instance, the controller/processor 225 could support beam forming
or directional routing operations in which outgoing signals from
multiple antennas 205a-205n are weighted differently to effectively
steer the outgoing signals in a desired direction. Any of a wide
variety of other functions could be supported in the gNB 102 by the
controller/processor 225.
[0081] The controller/processor 225 is also capable of executing
programs and other processes resident in the memory 230, such as an
OS. The controller/processor 225 can move data into or out of the
memory 230 as required by an executing process.
[0082] The controller/processor 225 is also coupled to the backhaul
or network interface 235. The backhaul or network interface 235
allows the gNB 102 to communicate with other devices or systems
over a backhaul connection or over a network. The interface 235
could support communications over any suitable wired or wireless
connection(s). For example, when the gNB 102 is implemented as part
of a cellular communication system (such as one supporting 5G, LTE,
or LTE-A), the interface 235 could allow the gNB 102 to communicate
with other gNBs over a wired or wireless backhaul connection. When
the gNB 102 is implemented as an access point, the interface 235
could allow the gNB 102 to communicate over a wired or wireless
local area network or over a wired or wireless connection to a
larger network (such as the Internet). The interface 235 includes
any suitable structure supporting communications over a wired or
wireless connection, such as an Ethernet or RF transceiver.
[0083] The memory 230 is coupled to the controller/processor 225.
Part of the memory 230 could include a RAM, and another part of the
memory 230 could include a Flash memory or other ROM.
[0084] Although FIG. 2 illustrates one example of gNB 102, various
changes may be made to FIG. 2. For example, the gNB 102 could
include any number of each component shown in FIG. 2. As a
particular example, an access point could include a number of
interfaces 235, and the controller/processor 225 could support
routing functions to route data between different network
addresses. As another particular example, while shown as including
a single instance of TX processing circuitry 215 and a single
instance of RX processing circuitry 220, the gNB 102 could include
multiple instances of each (such as one per RF transceiver). Also,
various components in FIG. 2 could be combined, further subdivided,
or omitted and additional components could be added according to
particular needs.
[0085] FIG. 3 illustrates an example UE 116 according to
embodiments of the present disclosure. The embodiment of the UE 116
illustrated in FIG. 3 is for illustration only, and the UEs 111-115
of FIG. 1 could have the same or similar configuration. However,
UEs come in a wide variety of configurations, and FIG. 3 does not
limit the scope of this disclosure to any particular implementation
of a UE.
[0086] As shown in FIG. 3, the UE 116 includes an antenna 305, a
radio frequency (RF) transceiver 310, TX processing circuitry 315,
a microphone 320, and receive (RX) processing circuitry 325. The UE
116 also includes a speaker 330, a processor 340, an input/output
(I/O) interface (IF) 345, a touchscreen 350, a display 355, and a
memory 360. The memory 360 includes an operating system (OS) 361
and one or more applications 362.
[0087] The RF transceiver 310 receives, from the antenna 305, an
incoming RF signal transmitted by a gNB of the network 100. The RF
transceiver 310 down-converts the incoming RF signal to generate an
intermediate frequency (IF) or baseband signal. The IF or baseband
signal is sent to the RX processing circuitry 325, which generates
a processed baseband signal by filtering, decoding, and/or
digitizing the baseband or IF signal. The RX processing circuitry
325 transmits the processed baseband signal to the speaker 330
(such as for voice data) or to the processor 340 for further
processing (such as for web browsing data).
[0088] The TX processing circuitry 315 receives analog or digital
voice data from the microphone 320 or other outgoing baseband data
(such as web data, e-mail, or interactive video game data) from the
processor 340. The TX processing circuitry 315 encodes,
multiplexes, and/or digitizes the outgoing baseband data to
generate a processed baseband or IF signal. The RF transceiver 310
receives the outgoing processed baseband or IF signal from the TX
processing circuitry 315 and up-converts the baseband or IF signal
to an RF signal that is transmitted via the antenna 305.
[0089] The processor 340 can include one or more processors or
other processing devices and execute the OS 361 stored in the
memory 360 in order to control the overall operation of the UE 116.
For example, the processor 340 could control the reception of
forward channel signals and the transmission of reverse channel
signals by the RF transceiver 310, the RX processing circuitry 325,
and the TX processing circuitry 315 in accordance with well-known
principles. In some embodiments, the processor 340 includes at
least one microprocessor or microcontroller.
[0090] The processor 340 is also capable of executing other
processes and programs resident in the memory 360, such as
processes for beam management. The processor 340 can move data into
or out of the memory 360 as required by an executing process. In
some embodiments, the processor 340 is configured to execute the
applications 362 based on the OS 361 or in response to signals
received from gNBs or an operator. The processor 340 is also
coupled to the I/O interface 345, which provides the UE 116 with
the ability to connect to other devices, such as laptop computers
and handheld computers. The I/O interface 345 is the communication
path between these accessories and the processor 340.
[0091] The processor 340 is also coupled to the touchscreen 350 and
the display 355. The operator of the UE 116 can use the touchscreen
350 to enter data into the UE 116. The display 355 may be a liquid
crystal display, light emitting diode display, or other display
capable of rendering text and/or at least limited graphics, such as
from web sites.
[0092] The memory 360 is coupled to the processor 340. Part of the
memory 360 could include a random access memory (RAM), and another
part of the memory 360 could include a Flash memory or other
read-only memory (ROM).
[0093] Although FIG. 3 illustrates one example of UE 116, various
changes may be made to FIG. 3. For example, various components in
FIG. 3 could be combined, further subdivided, or omitted and
additional components could be added according to particular needs.
As a particular example, the processor 340 could be divided into
multiple processors, such as one or more central processing units
(CPUs) and one or more graphics processing units (GPUs). Also,
while FIG. 3 illustrates the UE 116 configured as a mobile
telephone or smartphone, UEs could be configured to operate as
other types of mobile or stationary devices.
[0094] The present disclosure relates generally to wireless
communication systems and, more specifically, to improving a PDCCH
reception reliability and reducing an associated signaling
overhead. A communication system includes a downlink (DL) that
refers to transmissions from a base station or one or more
transmission points to UEs and an uplink (UL) that refers to
transmissions from UEs to a base station or to one or more
reception points.
[0095] To meet the demand for wireless data traffic having
increased since deployment of 4G communication systems, efforts
have been made to develop an improved 5G or pre-5G communication
system. Therefore, the 5G or pre-5G communication system is also
called a "beyond 4G network" or a "post LTE system." The 5G
communication system is considered to be implemented in higher
frequency (mmWave) bands, e.g., 60 GHz bands, so as to accomplish
higher data rates. To decrease propagation loss of the radio waves
and increase the transmission distance, the beamforming, massive
multiple-input multiple-output (MIMO), full dimensional MIMO
(FD-MIMO), array antenna, an analog beam forming, large scale
antenna techniques are discussed in 5G communication systems.
[0096] In addition, in 5G communication systems, development for
system network improvement is under way based on advanced small
cells, cloud radio access networks (RANs), ultra-dense networks,
device-to-device (D2D) communication, wireless backhaul, moving
network, cooperative communication, coordinated multi-points
(CoMP), reception-end interference cancellation and the like. In
the 5G system, Hybrid FSK and QAM modulation (FQAM) and sliding
window superposition coding (SWSC) as an advanced coding modulation
(ACM), and filter bank multi carrier (FBMC), non-orthogonal
multiple access (NOMA), and sparse code multiple access (SCMA) as
an advanced access technology have been developed.
[0097] A time unit for DL signaling or for UL signaling on a cell
is referred to as a slot and can include one or more symbols. A
symbol can also serve as an additional time unit. A frequency (or
bandwidth (BW)) unit is referred to as a resource block (RB). One
RB includes a number of sub-carriers (SCs). For example, a slot can
have duration of 0.5 milliseconds or 1 millisecond, include 7
symbols or 14 symbols, respectively, and an RB can have a BW of 180
kHz or 360 kHz and include 12 SCs with inter-SC spacing of 15 kHz
or 30 kHz.
[0098] DL signals include data signals conveying information
content, control signals conveying DL control information (DCI),
and reference signals (RS) that are also known as pilot signals. A
gNB can transmit data information or DCI through respective
physical DL shared channels (PDSCHs) or physical DL control
channels (PDCCHs). A gNB can transmit one or more of multiple types
of RS including channel state information RS (CSI-RS) and
demodulation RS (DMRS). A CSI-RS is intended for UEs to measure
channel state information (CSI) or to perform other measurements
such as ones related to mobility support. A DMRS can be transmitted
only in the BW of a respective PDCCH or PDSCH and a UE can use the
DMRS to demodulate data or control information.
[0099] A vehicular communication, referred to as
vehicle-to-everything (V2X), contains the following three different
types: 1) vehicle-to-vehicle (V2V) communications; 2)
vehicle-to-infrastructure (V2I) communications; and 3)
vehicle-to-pedestrian (V2P) communications. These three types of
V2X can use "co-operative awareness" to provide more intelligent
services for end-users. This means that transport entities, such as
vehicles, roadside infrastructure, and pedestrians, can collect
knowledge of their local environment (e.g., information received
from other vehicles or sensor equipment in proximity) to process
and share that knowledge in order to provide more intelligent
services, such as cooperative collision warning or autonomous
driving. A direct communication between vehicles in V2V is based on
a sidelink (SL) interface, and SL is the UE to UE interface for
synchronization, discovery, and communication.
[0100] FIG. 4 illustrates an example use case of a vehicle-centric
communication network 400 according to illustrative embodiments of
the present disclosure. The embodiment of the gNB 102 illustrated
in FIG. 4 is for illustration only. FIG. 4 does not limit the scope
of this disclosure to any particular implementation.
[0101] FIG. 5 illustrates an example composition of a sidelink
synchronization subframe 500 in LTE-V2X according to embodiments of
the present disclosure. The embodiment of the composition of a
sidelink synchronization subframe 500 illustrated in FIG. 5 is for
illustration only. FIG. 5 does not limit the scope of this
disclosure to any particular implementation.
[0102] In LTE-V2X, sidelink synchronization is achieved by
detecting the sidelink synchronization signals located within the
sidelink synchronization subframe. An illustration of the
composition of a sidelink synchronization subframe (for normal
cyclic prefix) is shown in FIG. 5, wherein the subframe contains 14
symbols, and 13 of them are mapped for either primary sidelink
synchronization signal (PSSS), secondary sidelink synchronization
signal (SSSS), physical sidelink broadcast channel (PSBCH), or
demodulation reference signal (DMRS). The remaining 1 symbol (e.g.,
the last symbol) are reserved as empty for other purposes (e.g.,
DL/UL switch gap). The bandwidth of all signals and channels in the
synchronization subframe is 6 RBs, and mapped to the central 6 RBs
of the carrier.
[0103] The sequence constructing PSSS is based on one of two
ZC-sequences, with root index 26 and 37, respectively, to represent
one of two sets of physical layer sidelink synchronization
identities. The sequence constructing SSSS is similar to the
sequence constructing LTE secondary synchronization signal (SSS),
i.e., interleaved M-sequences with cyclic shifts.
[0104] The system information delivered by PSBCH in LTE-V2X is the
master information block (MIB), and can be further combined with
cyclic redundancy check (CRC) to formulate the whole PBCH content.
A summary of LTE-V2X MIB is summarized in Table 1, including the
field names, the corresponding bit size of each field, and the
corresponding values can be taken. The total number of bits for MIB
is 48, and the total bit size PBCH content is 64 bits, by adding
another 16 bits for CRC.
TABLE-US-00001 TABLE 1 Bit size and filed name Field Name Bit Size
Values Sidelink Carrier 3 {6, 15,25,50, 75, 100} RBs Bandwidth TDD
Configuration 3 {none, sa0, sa1, sa2, sa3, sa4, sa5, sa6} DFN 10 0
to 1023 Subframe Index 4 0 to 9 within a Frame In Coverage 1 True
or False Indicator Reserved 27 --
[0105] FIG. 6 illustrates an example composition of an SS/PBCH
block 600 according to embodiments of the present disclosure. The
embodiment of the composition of an SS/PBCH block 600 illustrated
in FIG. 6 is for illustration only. FIG. 6 does not limit the scope
of this disclosure to any particular implementation.
[0106] New radio (NR) also supports synchronization through
synchronization signals transmitted on downlink. Comparing to LTE,
NR supports larger range of carrier frequencies, and more flexibly
numerology. For example, NR supports multiple synchronization
signals and physical broadcast channel blocks (SS/PBCH block) on
each carrier frequency range, wherein each SS/PBCH block
compromises of four consecutive orthogonal frequency division
multiplexing (OFDM) symbols (see FIG. 6), wherein the first symbol
is mapped for primary synchronization signal (PSS), the second and
forth symbols are mapped for PBCH, and the third symbol is mapped
for both secondary synchronization signal (SSS) and PBCH.
[0107] The same SS/PBCH block composition is applied to all
supported carrier frequency ranges in NR, which spans from 0 GHz to
52.6 GHz. The transmission bandwidth of PSS and SSS (e.g., 12
resource blocks (RBs)) is smaller than the transmission bandwidth
of the whole SS/PBCH block (e.g., 20 RBs). In every RB mapped for
PBCH, 3 out of the 12 resource elements (REs) are mapped for the
demodulation reference signal (DMRS) of PBCH, wherein the 3 REs are
uniformly distributed in the PRB and the starting location of the
first RE is based on cell ID. Moreover, NR Rel-15 supports one or
two subcarrier spacing (SCS) for SS/PBCH block, for a given band,
wherein the same SCS is utilized for PSS, SSS, and PBCH (including
DMRS). For carrier frequency range 0 GHz to 6 GHz, 15 kHz and/or 30
kHz can be utilized for the SS SCS. For carrier frequency range 6
GHz to 52.6 GHz, 120 kHz and/or 240 kHz can be utilized for SS
SCS.
[0108] The sequence constructing PSS is based on M-sequence with
cyclic shifts to represent the cell ID information carried by PSS,
and the sequence constructing SSS is based on Gold-sequence (XOR of
two M-sequences), wherein each M-sequence constructing the
Gold-sequence performs cyclic shift to represent the cell ID
information carried by SSS.
[0109] FIG. 7 illustrates an example SS/PBCH block mapping patterns
with respect to subcarrier spacings 700 according to embodiments of
the present disclosure. The embodiment of the SS/PBCH block mapping
patterns with respect to subcarrier spacings 700 illustrated in
FIG. 7 is for illustration only. FIG. 7 does not limit the scope of
this disclosure to any particular implementation.
[0110] In NR, SS/PBCH blocks could be transmitted in a
beam-sweeping way up to network implementation, and multiple
candidate location for transmitting SS/PBCH blocks are predefined
within a unit of half frame. The mapping pattern of SS/PBCH blocks
to 1 slot with respect to 15 kHz as the reference SCS for sub6 GHz
and with respect to 60 kHz as the reference SCS for above 6 GHz are
illustrated in 701 and 702 of FIG. 7, respectively. Two mapping
patterns are designed for 30 kHz SS SCS: Pattern 1 is utilized for
non-LTE-NR coexistence bands, and Pattern 2 is utilized for LTE-NR
coexistence bands.
[0111] FIG. 8 illustrates example SS/PBCH block locations within a
half 800 according to embodiments of the present disclosure. The
embodiment of the SS/PBCH block locations within a half 800
illustrated in FIG. 8 is for illustration only. FIG. 8 does not
limit the scope of this disclosure to any particular
implementation.
[0112] The maximum number of SS/PBCH blocks, denoted as L_SSB, is
determined based on carrier frequency range: for carrier frequency
range 0 GHz to 3 GHz, L_SSB is 4; for carrier frequency range 3 GHz
to 6 GHz, L_SSB is 8; for carrier frequency range 6 GHz to 52.6
GHz, L_SSB is 64. The determination of the slots within the half
frame unit which contains the candidate locations of SS/PBCH
blocks, with respect to each combination of SS SCS and L_SSB, is
illustrated in FIG. 8.
[0113] In initial cell selection, UE assumes a default SS burst set
periodicity as 20 ms, and for detecting non-standalone NR cell,
network provides one SS burst set periodicity information per
frequency carrier to UE and information to derive measurement
timing/duration if possible.
[0114] The SS/PBCH block index is indicated by the DMRS of PBCH in
the corresponding SS/PBCH block for carrier frequency range 0 to 6
GHz, and the 3 least significant bits (LSBs) of the SS/PBCH block
index is indicated by the DMRS of PBCH in the corresponding SS/PBCH
block for carrier frequency range GHz to 52.6 GHz (and the most
significant bits (MSBs) are indicated by PBCH content).
[0115] In NR, the bit size of PBCH content is 56, including 24 bits
CRC. A summary of NR 24-bits MIB together with another 8 bits
generated in the physical layer is illustrated in TABLE 2, wherein
some bit size and corresponding taken values are specified per
carrier frequency range.
TABLE-US-00002 TABLE 2 Filed name and bit size Field Name Bit Size
Values DFN 10 0 to 1023 Half Frame Indicator 1 {0, 1} MSB of
SS/PBCH 0 (below 6 GHz) 0 to 7 (above 6 GHz) Block Index 3 (above 6
GHz) Common SCS 1 {15, 30} kHz (below 6 GHz) {60, 120} kHz (above 6
GHz) SSB SCS Offset 5 (below 6 GHz) 0 to 31 (below 6 GHz) 4 (above
6 GHz) 0 to 15 (above 6 GHz) Type0-PDCCH 8 0 to 255 Configuration
Barred Cell 1 {barred, notBarred} Indication Intra-frequency 1
{allowed, notAllowed} Reselection Indicator TypeA DMRS 1 {pos2,
pos3} Location Reserved 4 (below 6 GHz) -- 2 (above 6 GHz)
[0116] In NR V2X, the synchronization signals on NR sidelink can
use the synchronization signals on downlink as a baseline, and
potential enhancement and/or modification to address the exclusive
requirement for V2X can be supported. The present disclosure
focuses on the design of sidelink SS/PBCH block (S-SSB), including
the S-SSB composition, synchronization signals, content of NR
sidelink PBCH (PSBCH), PSBCH scrambling, DMRS of PSBCH, and
pre-configured system information.
[0117] Aspects, features, and advantages of the present disclosure
are readily apparent from the following detailed description,
simply by illustrating a number of particular embodiments and
implementations, including the best mode contemplated for carrying
out the present disclosure. The present disclosure is also capable
of other and different embodiments, and several details can be
modified in various obvious respects, all without departing from
the spirit and scope of the present disclosure. Accordingly, the
drawings and description are to be regarded as illustrative in
nature, and not as restrictive. The present disclosure is
illustrated by way of example, and not by way of limitation, in the
figures of the accompanying drawings.
[0118] The present disclosure covers several components which can
be used in conjunction or in combination with one another, or can
operate as standalone schemes.
[0119] In one embodiment, NR SS/PBCH block composition (e.g., FIG.
6) can be a starting point for designing the NR sidelink SS and
PBCH block (S-SSB). This embodiment details the design aspects for
S-SSB composition.
[0120] FIG. 9A illustrates an example design of an S-SSB 900
according to embodiments of the present disclosure. The embodiment
of the design of an S-SSB 900 illustrated in FIG. 9A is for
illustration only. FIG. 9A does not limit the scope of this
disclosure to any particular implementation.
[0121] FIG. 9B illustrates another example design of an S-SSB 920
according to embodiments of the present disclosure. The embodiment
of design of an S-SSB 920 illustrated in FIG. 9B is for
illustration only. FIG. 9B does not limit the scope of this
disclosure to any particular implementation.
[0122] FIG. 9A and FIG. 9B illustrate design examples of an S-SSB.
An S-SSB can comprise at least one symbol mapped for S-PSS, at
least one symbol mapped for PSBCH, and at least one symbol mapped
for S-SSS or multiplexing of S-SSS and PSBCH.
[0123] For one example, the at least one symbol mapped for S-PSS
can be mapped for S-PSS only if the bandwidth of S-SSB is 11 or 12
RBs (942 of FIG. 9B). For another example, the at least one symbol
mapped for S-PSS can be mapped for multiplexing of S-PSS and empty
REs (e.g., empty REs FDMed with S-PSS) if the bandwidth of S-SSB is
larger than 12 RBs (such as 20 RBs) (943 of FIG. 9B). For yet
another example, the at least one symbol mapped for S-PSS can be
mapped for S-PSS in an interleaved way with empty REs (e.g., IFDMed
with empty RE in a RE-level such as S-PSS sequence is only mapped
to even REs or odd REs) if the bandwidth of S-SSB is 24 RBs (944 of
FIG. 9B).
[0124] For one example, the at least one symbol mapped for S-SSS or
multiplexing of S-SSS and PSBCH can be mapped for S-SSS only if the
bandwidth of S-SSB is 11 or 12 RBs (932 of FIG. 9B). For another
example, the at least one symbol mapped for S-SSS or multiplexing
of S-SSS and PSBCH can be mapped for multiplexing of S-SSS and
PSBCH (e.g., PSBCH FDMed with S-SSS) if the bandwidth of S-SSB is
larger than 12 RBs (such as 20 RBs) (933 of FIG. 9B). For yet
another example, the at least one symbol mapped for S-SSS or
multiplexing of S-SSS and PSBCH can be mapped for S-SSS in an
interleaved way with empty REs (e.g., IFDMed with empty RE in a
RE-level such as S-SSS sequence is only mapped to even REs or odd
REs) if the bandwidth of S-SSB is 24 RBs (934 of FIG. 9B).
[0125] In a first approach, there can be only one symbol mapped for
S-PSS within a S-SSB. For example, in example (a) of FIG. 9A, only
one symbol is mapped for S-PSS within an S-SSB.
[0126] In a second approach, there can be multiple symbols mapped
for S-PSS, wherein the symbols mapped for S-PSS are consecutive.
For one example, when there are two symbols mapped for S-PSS (such
as example (b) of FIG. 9A), the two symbols mapped for S-PSS are #0
and #1 symbol within the S-SSB. For another example, when there are
three symbols mapped for S-PSS (such as example (c) of FIG. 9), the
three symbols mapped for S-PSS are #0, #1, and #2 symbol within the
S-SSB. For yet another example, when there are two symbols mapped
for S-PSS (such as example (b) of FIG. 9A), the two symbols mapped
for S-PSS are #1 and #2 symbol within the S-SSB, and the #0 symbol
is for AGC purpose.
[0127] In a third approach, when there are multiple symbols mapped
for S-PSS (such as example (b) or (c) of FIG. 9A), the sequence
constructing the multiple S-PSSs in different symbols can be the
same. For example, the multiple symbols mapped for S-PSS (other
than cyclic prefix) are repetitive.
[0128] In a forth approach, when there are multiple symbols mapped
for S-PSS (such as example (b) or (c) of FIG. 9A), the sequence
constructing the multiple S-PSSs in different symbols can be
different. For example, the sequences in different symbols are
orthogonal to each other or with low cross-correlation to each
other.
[0129] In a fifth approach, there can be only one symbol mapped for
S-SSS within an S-SSB. For example, in example (a) of FIG. 9A, only
one symbol is mapped for S-SSS within an S-SSB.
[0130] In a sixth approach, there can be multiple symbols mapped
for S-SSS, wherein he symbols mapped for S-SSS are non-consecutive.
For one example, when there are two symbols mapped for S-SSS (such
as example (b) of FIG. 9A), at least one symbol between the two
symbols mapped for S-SSS within the S-SSB is mapped for PSBCH. For
another example, when there are three symbols mapped for S-SSS
(such as example (c) of FIG. 9A), at least one symbol between each
neighboring two symbols mapped for S-SSS within the S-SSB is mapped
for PSBCH.
[0131] In a seventh approach, there can be multiple symbols mapped
for S-SSS, wherein he symbols mapped for S-SSS are consecutive. For
one example, when there are X_SSS (where X_SSS>1, e.g., X_SSS=2
or X_SSS=3) symbols mapped for S-SSS, the X_SSS symbols mapped for
S-SSS are the last X_SSS symbols within the S-SSB.
[0132] In an eighth approach, when there are multiple symbols
mapped for S-SSS (such as example (b) or (c) of FIG. 9A), the
sequence constructing the multiple S-SSSs in different symbols can
be the same. For example, the multiple symbols mapped for S-SSS
(other than cyclic prefix) are repetitive.
[0133] In a ninth approach, when there are multiple symbols mapped
for S-SSS (such as example (b) or (c) of FIG. 9A), the sequence
constructing the multiple S-SSSs in different symbols can be
different. For example, the sequences in different symbols are
orthogonal to each other or with low cross-correlation to each
other. For another example, the sequence in one symbol can be the
sequence in another symbol scrambled by a predefined sequence.
[0134] In a tenth approach, the number of symbols mapped for PSBCH
(including DMRS) in each sub-blocks separated by symbol(s)
containing S-PSS or S-SSS (such as 902, 904, 913, 915, 917, 924,
926, 928, 930 in FIG. 9A) can be 0, or 1, or 2, and can be
independently determined for each sub-block.
[0135] In an eleventh approach, DMRS of PSBCH can be TDMed with
PSBCH. For example, some of the symbols in the sub-blocks separated
by symbol(s) containing S-PSS or S-SSS (such as 902, 904, 913, 915,
917, 924, 926, 928, 930 in FIG. 9A) can be mapped for DMRS of
PSBCH, and TDMed with other symbols mapped for PSBCH.
[0136] In a twelfth approach, DMRS of PSBCH can be IFDMed with
PSBCH. For example, in every RB in the symbol mapped for PSBCH, and
in every RB mapped for PSBCH in the symbol mapped for the
multiplexing of S-SSS and PSBCH if the bandwidth of S-SSB is larger
than 12 RBs, part of the REs are mapped for the DMRS of PSBCH, and
the remaining are mapped for PSBCH.
[0137] In a thirteenth approach, when there are multiple contiguous
symbols mapped for PSBCH, the multiple symbols mapped for PSBCH or
a set of the multiple symbols mapped for PSBCH (other than cyclic
prefix) can be repetitive.
[0138] In a fourteenth approach, the first symbol within the S-SSB
is mapped for PSBCH, such as to deal with automatic gain control
(AGC).
[0139] In a fifteenth approach, the S-PSS, S-SSS, and PSBCH
(including DMRS) are transmitted using the same antenna port.
[0140] Examples of the approach(s) or combination of the approaches
for this embodiment are illustrated in FIGS. 10A to 16B.
[0141] FIG. 10A illustrates an example S-SSB 1000 according to
embodiments of the present disclosure. The embodiment of the S-SSB
1000 illustrated in FIG. 10A is for illustration only. FIG. 10A
does not limit the scope of this disclosure to any particular
implementation.
[0142] FIG. 10B illustrates another example S-SSB 1020 according to
embodiments of the present disclosure. The embodiment of the S-SSB
1020 illustrated in FIG. 10B is for illustration only. FIG. 10B
does not limit the scope of this disclosure to any particular
implementation.
[0143] FIG. 11 illustrates yet another example S-SSB 1100 according
to embodiments of the present disclosure. The embodiment of the
S-SSB 1100 illustrated in FIG. 11 is for illustration only. FIG. 11
does not limit the scope of this disclosure to any particular
implementation.
[0144] FIG. 12A illustrates yet another example S-SSB 1200
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1200 illustrated in FIG. 12A is for illustration only.
FIG. 12A does not limit the scope of this disclosure to any
particular implementation.
[0145] FIG. 12B illustrates yet another example S-SSB 1220
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1220 illustrated in FIG. 12B is for illustration only.
FIG. 12B does not limit the scope of this disclosure to any
particular implementation.
[0146] FIG. 12C illustrates yet another example S-SSB 1240
according to embodiments of the present disclosure. The embodiment
of the S-SSB 12 illustrated in FIG. 12C is for illustration only.
FIG. 12C does not limit the scope of this disclosure to any
particular implementation.
[0147] FIG. 13A illustrates yet another example S-SSB 1300
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1300 illustrated in FIG. 13A is for illustration only.
FIG. 13A does not limit the scope of this disclosure to any
particular implementation.
[0148] FIG. 13B illustrates yet another example S-SSB 1320
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1320 illustrated in FIG. 13B is for illustration only.
FIG. 13B does not limit the scope of this disclosure to any
particular implementation.
[0149] FIG. 14A illustrates yet another example S-SSB 1400
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1400 illustrated in FIG. 14A is for illustration only.
FIG. 14A does not limit the scope of this disclosure to any
particular implementation.
[0150] FIG. 14B illustrates yet another example S-SSB 1420
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1420 illustrated in FIG. 14B is for illustration only.
FIG. 14B does not limit the scope of this disclosure to any
particular implementation.
[0151] FIG. 14C illustrates yet another example S-SSB 1440
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1440 illustrated in FIG. 14C is for illustration only.
FIG. 14C does not limit the scope of this disclosure to any
particular implementation.
[0152] FIG. 14D illustrates yet another example S-SSB 1460
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1460 illustrated in FIG. 14D is for illustration only.
FIG. 14D does not limit the scope of this disclosure to any
particular implementation.
[0153] FIG. 14E illustrates yet another example S-SSB 1480
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1480 illustrated in FIG. 14E is for illustration only.
FIG. 14E does not limit the scope of this disclosure to any
particular implementation.
[0154] FIG. 15A illustrates yet another example S-SSB 1500
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1500 illustrated in FIG. 15A is for illustration only.
FIG. 15A does not limit the scope of this disclosure to any
particular implementation.
[0155] FIG. 15B illustrates yet another example S-SSB 1520
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1520 illustrated in FIG. 15B is for illustration only.
FIG. 15B does not limit the scope of this disclosure to any
particular implementation.
[0156] FIG. 15C illustrates yet another example S-SSB 1540
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1540 illustrated in FIG. 15C is for illustration only.
FIG. 15C does not limit the scope of this disclosure to any
particular implementation.
[0157] FIG. 16A illustrates yet another example S-SSB 1600
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1600 illustrated in FIG. 16A is for illustration only.
FIG. 16A does not limit the scope of this disclosure to any
particular implementation.
[0158] FIG. 16B illustrates yet another example S-SSB 1620
according to embodiments of the present disclosure. The embodiment
of the S-SSB 1620 illustrated in FIG. 16B is for illustration only.
FIG. 16B does not limit the scope of this disclosure to any
particular implementation.
[0159] FIG. 10A and FIG. 10B illustrate examples of this embodiment
wherein one slot with 14 symbols contains two consecutive PSBCH
blocks (SSBs), and two symbols (e.g., the first and last symbols in
FIG. 10A or the seventh and last symbol in FIG. 10B) of the slot
are reserved for other purpose such as automatic gain control (AGC)
or transmission-to-reception (TX/RX) switch gap. In one
consideration, each PSBCH block contains 2 symbols for S-PSS, 2
symbols for S-SSS or multiplexing of S-SSS and PSBCH, and 2 symbols
for PSBCH. In another consideration, each PSBCH block contains 2
symbols for S-PSS, 1 symbol for S-SSS or multiplexing of S-SSS and
PSBCH, and 3 symbols for PSBCH. In yet another consideration, each
PSBCH block contains 1 symbol for S-PSS, 2 symbols for S-SSS or
multiplexing of S-SSS and PSBCH, and 3 symbols for PSBCH. In yet
another consideration, each PSBCH block contains 1 symbol for
S-PSS, 1 symbol for S-SSS or multiplexing of S-SSS and PSBCH, and 4
symbols for PSBCH.
[0160] In one example (e.g., 1001 in FIG. 10A), the first and last
symbols within a slot are reserved for other purpose, and symbols
#1 to #6 are mapped for a first S-SSB within the slot, and symbols
#7 to #12 are mapped for a second S-SSB within a slot, wherein the
two S-SSBs have the same composition with respect to the time
domain mapping: the first and second symbols in the S-SSB (i.e.,
symbols #1, #2, #7, and #8 in term of the symbol index within the
slot) are mapped for S-PSS, the fourth and sixth symbols in the
S-SSB (i.e., symbols #4, #6, #10, and #12 in term of the symbol
index within the slot) are mapped for S-SSS (if the BW of S-SSB is
12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH (if the BW of
S-SSB is larger than 12 RBs such as 20 RBs), and the third and
fifth symbols in the S-SSB (i.e., symbols #3, #5, #9, and #11 in
term of the symbol index within the slot) are mapped for PSBCH.
[0161] In another example (e.g., 1002 in FIG. 10A), the first and
last symbols within a slot are reserved for other purpose, and
symbols #1 to #6 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the first and second symbols in the S-SSB
(i.e., symbols #1, #2, #7, and #8 in term of the symbol index
within the slot) are mapped for S-PSS, the fourth and fifth symbols
in the S-SSB (i.e., symbols #4, #6, #10, and #11 in term of the
symbol index within the slot) are mapped for S-SSS (if the BW of
S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH (if
the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
third and sixth symbols in the S-SSB (i.e., symbols #3, #6, #9, and
#12 in term of the symbol index within the slot) are mapped for
PSBCH.
[0162] In yet another example (e.g., 1003 in FIG. 10A), the first
and last symbols within a slot are reserved for other purpose, and
symbols #1 to #6 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the first symbol in the S-SSB (i.e.,
symbols #1, and #7 in term of the symbol index within the slot) are
mapped for S-PSS, the third and fifth symbols in the S-SSB (i.e.,
symbols #3, #5, #9, and #11 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the second, fourth, and sixth
symbols in the S-SSB (i.e., symbols #2, #4, #6, #8, #10, and #12 in
term of the symbol index within the slot) are mapped for PSBCH.
[0163] In yet another example (e.g., 1004 in FIG. 10A), the first
and last symbols within a slot are reserved for other purpose, and
symbols #1 to #6 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second symbol in the S-SSB (i.e.,
symbols #2, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the fourth and fifth symbols in the S-SSB (i.e.,
symbols #4, #5, #10, and #11 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the first, third, and sixth
symbols in the S-SSB (i.e., symbols #1, #3, #6, #7, #9, and #12 in
term of the symbol index within the slot) are mapped for PSBCH.
[0164] In yet another example (e.g., 1005 in FIG. 10A), the first
and last symbols within a slot are reserved for other purpose, and
symbols #1 to #6 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second symbol in the S-SSB (i.e.,
symbols #2, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the fourth and sixth symbols in the S-SSB (i.e.,
symbols #4, #6, #10, and #12 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the first, third, and fifth
symbols in the S-SSB (i.e., symbols #1, #3, #5, #7, #9, and #11 in
term of the symbol index within the slot) are mapped for PSBCH.
[0165] In yet another example (e.g., 1006 in FIG. 10A), the first
and last symbols within a slot are reserved for other purpose, and
symbols #1 to #6 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the first and second symbol in the S-SSB
(i.e., symbols #1, #2, #7, and #8 in term of the symbol index
within the slot) are mapped for S-PSS, the fourth symbol in the
S-SSB (i.e., symbols #4, and #10 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the third, fifth, and sixth
symbols in the S-SSB (i.e., symbols #3, #5, #6, #9, #11, and #12 in
term of the symbol index within the slot) are mapped for PSBCH.
[0166] In yet another example (e.g., 1007 in FIG. 10A), the first
and last symbols within a slot are reserved for other purpose, and
symbols #1 to #6 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second symbol in the S-SSB (i.e.,
symbols #2, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the fourth symbol in the S-SSB (i.e., symbols #4,
and #10 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the first, third, fifth, and sixth symbols in the
S-SSB (i.e., symbols #1, #3, #5, #6, #7, #9, #11, and #12 in term
of the symbol index within the slot) are mapped for PSBCH.
[0167] In yet another example (e.g., 1011 in FIG. 10B), the seventh
and last symbols within a slot are reserved for other purpose, and
symbols #0 to #5 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the first and second symbol in the S-SSB
(i.e., symbols #0, #1, #7, and #8 in term of the symbol index
within the slot) are mapped for S-PSS, the fourth and sixth symbol
in the S-SSB (i.e., symbols #3, #5, #10, and #12 in term of the
symbol index within the slot) are mapped for S-SSS (if the BW of
S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH (if
the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
third, and fifth symbols in the S-SSB (i.e., symbols #2, #4, #9,
and #11 in term of the symbol index within the slot) are mapped for
PSBCH.
[0168] In yet another example (e.g., 1012 in FIG. 10B), the seventh
and last symbols within a slot are reserved for other purpose, and
symbols #0 to #5 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the first and second symbol in the S-SSB
(i.e., symbols #0, #1, #7, and #8 in term of the symbol index
within the slot) are mapped for S-PSS, the fourth and fifth symbol
in the S-SSB (i.e., symbols #3, #4, #10, and #11 in term of the
symbol index within the slot) are mapped for S-SSS (if the BW of
S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH (if
the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
third, and sixth symbols in the S-SSB (i.e., symbols #2, #5, #9,
and #12 in term of the symbol index within the slot) are mapped for
PSBCH.
[0169] In yet another example (e.g., 1013 in FIG. 10B), the seventh
and last symbols within a slot are reserved for other purpose, and
symbols #0 to #5 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second and third symbol in the S-SSB
(i.e., symbols #1, #2, #8, and #9 in term of the symbol index
within the slot) are mapped for S-PSS, the fifth symbol in the
S-SSB (i.e., symbols #4, and #11 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, fourth, and
sixth symbols in the S-SSB (i.e., symbols #0, #3, #5, #7, #10, and
#12 in term of the symbol index within the slot) are mapped for
PSBCH.
[0170] In yet another example (e.g., 1014 in FIG. 10B), the seventh
and last symbols within a slot are reserved for other purpose, and
symbols #0 to #5 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second symbol in the S-SSB (i.e.,
symbols #1, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the fourth and fifth symbol in the S-SSB (i.e.,
symbols #3, #4, #10, and #11 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the first, third, and sixth
symbols in the S-SSB (i.e., symbols #0, #2, #5, #7, #9, and #12 in
term of the symbol index within the slot) are mapped for PSBCH.
[0171] In yet another example (e.g., 1015 in FIG. 10B), the seventh
and last symbols within a slot are reserved for other purpose, and
symbols #0 to #5 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second symbol in the S-SSB (i.e.,
symbols #1, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the third and fifth symbol in the S-SSB (i.e.,
symbols #2, #4, #9, and #11 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the first, fourth, and sixth
symbols in the S-SSB (i.e., symbols #0, #3, #5, #7, #10, and #12 in
term of the symbol index within the slot) are mapped for PSBCH.
[0172] In yet another example (e.g., 1016 in FIG. 10B), the seventh
and last symbols within a slot are reserved for other purpose, and
symbols #0 to #5 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second symbol in the S-SSB (i.e.,
symbols #1, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the fourth symbol in the S-SSB (i.e., symbols #3,
and #10 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the first, third, fifth, and sixth symbols in the
S-SSB (i.e., symbols #0, #2, #4, #5, #7, #9, #11, and #12 in term
of the symbol index within the slot) are mapped for PSBCH.
[0173] In yet another example (e.g., 1017 in FIG. 10B), the seventh
and last symbols within a slot are reserved for other purpose, and
symbols #0 to #5 are mapped for a first S-SSB within the slot, and
symbols #7 to #12 are mapped for a second S-SSB within a slot,
wherein the two S-SSBs have the same composition with respect to
the time domain mapping: the second symbol in the S-SSB (i.e.,
symbols #1, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the fifth symbol in the S-SSB (i.e., symbols #4,
and #11 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the first, third, fourth, and sixth symbols in the
S-SSB (i.e., symbols #0, #2, #3, #5, #7, #9, #10, and #12 in term
of the symbol index within the slot) are mapped for PSBCH.
[0174] FIG. 11 illustrates examples of this embodiment wherein one
slot with 14 symbols contains two consecutive PSBCH blocks (SSBs),
and each PSBCH block contains 7 symbols, and no symbol in the slot
is reserved for other purpose. In one consideration, each PSBCH
block contains 2 symbols for S-PSS, 2 symbols for S-SSS or
multiplexing of S-SSS and PSBCH, and 3 symbols for PSBCH.
[0175] In yet another example (e.g., 1101 in FIG. 11), symbols #0
to #6 are mapped for a first S-SSB within the slot, and symbols #7
to #13 are mapped for a second S-SSB within a slot, wherein the two
S-SSBs have the same composition with respect to the time domain
mapping: the first and second symbols in the S-SSB (i.e., symbols
#0, #1, #7, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the fourth and sixth symbols in the S-SSB (i.e.,
symbols #3, #5, #10, and #12 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the third, fifth, and seventh
symbols in the S-SSB (i.e., symbols #2, #4, #6, #9, #11, and #13 in
term of the symbol index within the slot) are mapped for PSBCH.
[0176] In yet another example (e.g., 1102 in FIG. 11), symbols #0
to #6 are mapped for a first S-SSB within the slot, and symbols #7
to #13 are mapped for a second S-SSB within a slot, wherein the two
S-SSBs have the same composition with respect to the time domain
mapping: the first and second symbols in the S-SSB (i.e., symbols
#0, #1, #7, and #8 in term of the symbol index within the slot) are
mapped for S-PSS, the sixth and seventh symbols in the S-SSB (i.e.,
symbols #5, #6, #12, and #13 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the third, fourth, and fifth
symbols in the S-SSB (i.e., symbols #2, #3, #4, #9, #10, and #11 in
term of the symbol index within the slot) are mapped for PSBCH.
[0177] In yet another example (e.g., 1103 in FIG. 11), symbols #0
to #6 are mapped for a first S-SSB within the slot, and symbols #7
to #13 are mapped for a second S-SSB within a slot, wherein the two
S-SSBs have the same composition with respect to the time domain
mapping: the second and third symbols in the S-SSB (i.e., symbols
#1, #2, #8, and #9 in term of the symbol index within the slot) are
mapped for S-PSS, the fifth and sixth symbols in the S-SSB (i.e.,
symbols #4, #5, #11, and #12 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the first, fourth, and seventh
symbols in the S-SSB (i.e., symbols #0, #3, #6, #7, #10, and #13 in
term of the symbol index within the slot) are mapped for PSBCH.
[0178] In yet another example (e.g., 1104 in FIG. 11), symbols #0
to #6 are mapped for a first S-SSB within the slot, and symbols #7
to #13 are mapped for a second S-SSB within a slot, wherein the two
S-SSBs have the same composition with respect to the time domain
mapping: the second and third symbols in the S-SSB (i.e., symbols
#1, #2, #8, and #9 in term of the symbol index within the slot) are
mapped for S-PSS, the fifth and seventh symbols in the S-SSB (i.e.,
symbols #4, #6, #11, and #13 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the first, fourth, and sixth
symbols in the S-SSB (i.e., symbols #0, #3, #5, #7, #10, and #12 in
term of the symbol index within the slot) are mapped for PSBCH.
[0179] In yet another example (e.g., 1105 in FIG. 11), symbols #0
to #6 are mapped for a first S-SSB within the slot, and symbols #7
to #13 are mapped for a second S-SSB within a slot, wherein the two
S-SSBs have the same composition with respect to the time domain
mapping: the second and third symbols in the S-SSB (i.e., symbols
#1, #2, #8, and #9 in term of the symbol index within the slot) are
mapped for S-PSS, the fourth and sixth symbols in the S-SSB (i.e.,
symbols #3, #5, #10, and #12 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the first, third, and fifth
symbols in the S-SSB (i.e., symbols #0, #4, #6, #7, #11, and #13 in
term of the symbol index within the slot) are mapped for PSBCH.
[0180] FIG. 12A, FIG. 12B, and FIG. 12C illustrate examples of this
embodiment wherein one slot with 14 symbols contains one PSBCH
block (SSB), and the PSBCH block contains 12 symbols, and the first
and last symbols in the slot are reserved for other purpose such as
automatic gain control (AGC) or transmission-to-reception (TX/RX)
switch gap. In one consideration, each PSBCH block contains 3
symbols for S-PSS, 3 symbols for S-SSS or multiplexing of S-SSS and
PSBCH, and 6 symbols for PSBCH. In another consideration, each
PSBCH block contains 2 symbols for S-PSS, 2 symbols for S-SSS or
multiplexing of S-SSS and PSBCH, and 8 symbols for PSBCH. In yet
another consideration, each PSBCH block contains 4 symbols for
S-PSS, 4 symbols for S-SSS or multiplexing of S-SSS and PSBCH, and
4 symbols for PSBCH.
[0181] In one example (e.g., 1201 in FIG. 12A), symbols #1 to #12
are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #1, #2, and
#3 in term of the symbol index within the slot) are mapped for
S-PSS, the sixth, ninth, and twelfth symbols in the S-SSB (i.e.,
symbols #6, #9, and #12 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the fourth, fifth, seventh,
eighth, tenth, and eleventh symbols in the S-SSB (i.e., symbols #4,
#5, #7, #8, #10, and #11 in term of the symbol index within the
slot) are mapped for PSBCH.
[0182] In another example (e.g., 1202 in FIG. 12A), symbols #1 to
#12 are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #1, #2, and
#3 in term of the symbol index within the slot) are mapped for
S-PSS, the tenth, eleventh, and twelfth symbols in the S-SSB (i.e.,
symbols #10, #11, and #12 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the fourth, fifth, sixth, seventh,
eighth, and ninth symbols in the S-SSB (i.e., symbols #4, #5, #6,
#7, #8, and #9 in term of the symbol index within the slot) are
mapped for PSBCH.
[0183] In yet another example (e.g., 1203 in FIG. 12A), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, and third symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the fifth, eighth, and eleventh symbols in the S-SSB
(i.e., symbols #5, #8, and #11 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, sixth, seventh,
ninth, tenth, and twelfth symbols in the S-SSB (i.e., symbols #4,
#6, #7, #9, #10, and #12 in term of the symbol index within the
slot) are mapped for PSBCH.
[0184] In yet another example (e.g., 1211 in FIG. 12B), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, and second symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
sixth, and ninth symbols in the S-SSB (i.e., symbols #6, and #9 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the third, fourth, fifth, seventh, eighth, tenth, eleventh, and
twelfth symbols in the S-SSB (i.e., symbols #3, #4, #5, #7, #8,
#10, #11, and #12 in term of the symbol index within the slot) are
mapped for PSBCH.
[0185] In yet another example (e.g., 1212 in FIG. 12B), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, and second symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
fifth, and tenth symbols in the S-SSB (i.e., symbols #5, and #10 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the third, fourth, sixth, seventh, eighth, ninth, eleventh, and
twelfth symbols in the S-SSB (i.e., symbols #3, #4, #6, #7, #8, #9,
#11, and #12 in term of the symbol index within the slot) are
mapped for PSBCH.
[0186] In yet another example (e.g., 1213 in FIG. 12B), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, and second symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
seventh, and eighth symbols in the S-SSB (i.e., symbols #7, and #8
in term of the symbol index within the slot) are mapped for S-SSS
(if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS
and PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20
RBs), and the third, fourth, fifth, sixth, ninth, tenth, eleventh,
and twelfth symbols in the S-SSB (i.e., symbols #3, #4, #6, #7, #8,
#9, #11, and #12 in term of the symbol index within the slot) are
mapped for PSBCH.
[0187] In yet another example (e.g., 1221 in FIG. 12C), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the sixth, seventh, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #6, #7, #10, and #11 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, eighth, ninth, and twelfth symbols in the S-SSB (i.e.,
symbols #5, #8, #9, and #12 in term of the symbol index within the
slot) are mapped for PSBCH.
[0188] In yet another example (e.g., 1222 in FIG. 12C), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, eighth, ninth, and tenth
symbols in the S-SSB (i.e., symbols #7, #8, #9, and #10 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, sixth, eleventh, and twelfth symbols in the S-SSB (i.e.,
symbols #5, #6, #11, and #12 in term of the symbol index within the
slot) are mapped for PSBCH.
[0189] In yet another example (e.g., 1223 in FIG. 12C), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the fifth, seventh, ninth, and eleventh
symbols in the S-SSB (i.e., symbols #5, #7, #9, and #11 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
sixth, eighth, tenth, and twelfth symbols in the S-SSB (i.e.,
symbols #6, #8, #10, and #12 in term of the symbol index within the
slot) are mapped for PSBCH.
[0190] In yet another example (e.g., 1224 in FIG. 12C), symbols #1
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the sixth, eighth, tenth, and twelfth
symbols in the S-SSB (i.e., symbols #6, #8, #10, and #12 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, seventh, ninth, and eleventh symbols in the S-SSB (i.e.,
symbols #5, #7, #9, and #11 in term of the symbol index within the
slot) are mapped for PSBCH.
[0191] FIG. 13A and FIG. 13B illustrate examples of this embodiment
wherein one slot with 14 symbols contains one PSBCH block (SSB),
and the PSBCH block contains 13 symbols, and the first symbol in
the slot is reserved for other purpose such as automatic gain
control (AGC) or transmission-to-reception (TX/RX) switch gap. In
one consideration, each PSBCH block contains 3 symbols for S-PSS, 3
symbols for S-SSS or multiplexing of S-SSS and PSBCH, and 7 symbols
for PSBCH. In another consideration, each PSBCH block contains 2
symbols for S-PSS, 2 symbols for S-SSS or multiplexing of S-SSS and
PSBCH, and 9 symbols for PSBCH. In yet another consideration, each
PSBCH block contains 4 symbols for S-PSS, 4 symbols for S-SSS or
multiplexing of S-SSS and PSBCH, and 5 symbols for PSBCH.
[0192] In one example (e.g., 1301 in FIG. 13A), symbols #1 to #13
are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #1, #2, and
#3 in term of the symbol index within the slot) are mapped for
S-PSS, the sixth, ninth, and twelfth symbols in the S-SSB (i.e.,
symbols #6, #9, and #12 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the fourth, fifth, seventh,
eighth, ninth, eleventh, and thirteenth symbols in the S-SSB (i.e.,
symbols #4, #5, #7, #8, #10, #11, and #13 in term of the symbol
index within the slot) are mapped for PSBCH.
[0193] In another example (e.g., 1302 in FIG. 13A), symbols #1 to
#13 are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #1, #2, and
#3 in term of the symbol index within the slot) are mapped for
S-PSS, the eleventh, twelfth, and thirteenth symbols in the S-SSB
(i.e., symbols #11, #12, and #13 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, fifth, sixth,
seventh, eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #4, #5, #6, #7, #8, #9, and #10 in term of the symbol index
within the slot) are mapped for PSBCH.
[0194] In yet another example (e.g., 1303 in FIG. 13A), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, and third symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the fifth, eighth, and eleventh symbols in the S-SSB
(i.e., symbols #5, #8, and #11 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, sixth, seventh,
ninth, tenth, twelfth, and thirteenth symbols in the S-SSB (i.e.,
symbols #4, #6, #7, #9, #10, #12, and #13 in term of the symbol
index within the slot) are mapped for PSBCH.
[0195] In yet another example (e.g., 1304 in FIG. 13A), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, and third symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the seventh, eighth, and ninth symbols in the S-SSB
(i.e., symbols #7, #8, and #9 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, fifth, sixth,
tenth, eleventh, twelfth, and thirteenth symbols in the S-SSB
(i.e., symbols #4, #5, #6, #10, #11, #12, and #13 in term of the
symbol index within the slot) are mapped for PSBCH.
[0196] In yet another example (e.g., 1305 in FIG. 13A), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, and third symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #8, #9, and #10 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the fourth, fifth, sixth, seventh,
eleventh, twelfth, and thirteenth symbols in the S-SSB (i.e.,
symbols #4, #5, #6, #7, #11, #12, and #13 in term of the symbol
index within the slot) are mapped for PSBCH.
[0197] In yet another example (e.g., 1311 in FIG. 13B), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the sixth, eighth, tenth, and twelfth
symbols in the S-SSB (i.e., symbols #6, #8, #10, and #12 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, seventh, ninth, eleventh, and thirteenth symbols in the
S-SSB (i.e., symbols #5, #7, #9, #11, and #13 in term of the symbol
index within the slot) are mapped for PSBCH.
[0198] In yet another example (e.g., 1312 in FIG. 13B), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the tenth, eleventh, twelfth, and
thirteenth symbols in the S-SSB (i.e., symbols #10, #11, #12, and
#13 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the fifth, sixth, seventh, eighth, and ninth symbols
in the S-SSB (i.e., symbols #5, #6, #7, #8, and #9 in term of the
symbol index within the slot) are mapped for PSBCH.
[0199] In yet another example (e.g., 1313 in FIG. 13B), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the eighth, ninth, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #8, #9, #10, and #11 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, sixth, seventh, twelfth, and thirteenth symbols in the S-SSB
(i.e., symbols #5, #6, #7, #12, and #13 in term of the symbol index
within the slot) are mapped for PSBCH.
[0200] In yet another example (e.g., 1314 in FIG. 13B), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, eighth, ninth, and tenth
symbols in the S-SSB (i.e., symbols #7, #8, #9, and #10 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, sixth, eleventh, twelfth, and thirteenth symbols in the
S-SSB (i.e., symbols #5, #6, #11, #12, and #13 in term of the
symbol index within the slot) are mapped for PSBCH.
[0201] In yet another example (e.g., 1315 in FIG. 13B), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, eighth, tenth, and
eleventh symbols in the S-SSB (i.e., symbols #7, #8, #10, and #11
in term of the symbol index within the slot) are mapped for S-SSS
(if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS
and PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20
RBs), and the fifth, sixth, ninth, twelfth, and thirteenth symbols
in the S-SSB (i.e., symbols #5, #6, #9, #12, and #13 in term of the
symbol index within the slot) are mapped for PSBCH.
[0202] In yet another example (e.g., 1316 in FIG. 13B), symbols #1
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the sixth, seventh, eleventh, and
twelfth symbols in the S-SSB (i.e., symbols #6, #7, #11, and #12 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the fifth, eighth, ninth, tenth, and thirteenth symbols in the
S-SSB (i.e., symbols #5, #8, #9, #10, and #13 in term of the symbol
index within the slot) are mapped for PSBCH.
[0203] FIG. 14A, FIG. 14B, FIG. 14C, and FIG. 14D illustrate
examples of this embodiment wherein one slot with 14 symbols
contains one PSBCH block (SSB), and the PSBCH block contains 13
symbols, and the last symbol in the slot is reserved for other
purpose such as transmission-to-reception (TX/RX) switch gap. In
one consideration, each PSBCH block contains 3 symbols for S-PSS, 3
symbols for S-SSS or multiplexing of S-SSS and PSBCH, and 7 symbols
for PSBCH. In another consideration, each PSBCH block contains 2
symbols for S-PSS, 2 symbols for S-SSS or multiplexing of S-SSS and
PSBCH, and 9 symbols for PSBCH. In yet another consideration, each
PSBCH block contains 4 symbols for S-PSS, 4 symbols for S-SSS or
multiplexing of S-SSS and PSBCH, and 5 symbols for PSBCH.
[0204] In one example (e.g., 1401 in FIG. 14A), symbols #0 to #12
are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #0, #1, and
#2 in term of the symbol index within the slot) are mapped for
S-PSS, the sixth, ninth, and twelfth symbols in the S-SSB (i.e.,
symbols #5, #8, and #11 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the fourth, fifth, seventh,
eighth, ninth, eleventh, and thirteenth symbols in the S-SSB (i.e.,
symbols #3, #4, #6, #7, #9, #10, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0205] In another example (e.g., 1402 in FIG. 14A), symbols #0 to
#12 are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #0, #1, and
#2 in term of the symbol index within the slot) are mapped for
S-PSS, the eleventh, twelfth, and thirteenth symbols in the S-SSB
(i.e., symbols #10, #11, and #12 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, fifth, sixth,
seventh, eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #3, #4, #5, #6, #7, #8, and #9 in term of the symbol index
within the slot) are mapped for PSBCH.
[0206] In yet another example (e.g., 1403 in FIG. 14A), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, and third symbols in the S-SSB (i.e., symbols #0,
#1, and #2 in term of the symbol index within the slot) are mapped
for S-PSS, the fifth, eighth, and eleventh symbols in the S-SSB
(i.e., symbols #4, #7, and #10 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, sixth, seventh,
ninth, tenth, twelfth, and thirteenth symbols in the S-SSB (i.e.,
symbols #3, #5, #6, #8, #9, #11, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0207] In yet another example (e.g., 1404 in FIG. 14A), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, and third symbols in the S-SSB (i.e., symbols #0,
#1, and #2 in term of the symbol index within the slot) are mapped
for S-PSS, the seventh, eighth, and ninth symbols in the S-SSB
(i.e., symbols #6, #7, and #8 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, fifth, sixth,
tenth, eleventh, twelfth, and thirteenth symbols in the S-SSB
(i.e., symbols #3, #4, #5, #9, #10, #11, and #12 in term of the
symbol index within the slot) are mapped for PSBCH.
[0208] In yet another example (e.g., 1405 in FIG. 14A), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, and third symbols in the S-SSB (i.e., symbols #0,
#1, and #2 in term of the symbol index within the slot) are mapped
for S-PSS, the eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #7, #8, and #9 in term of the symbol index within the slot)
are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or
multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger than
12 RBs such as 20 RBs), and the fourth, fifth, sixth, seventh,
eleventh, twelfth, and thirteenth symbols in the S-SSB (i.e.,
symbols #3, #4, #5, #6, #10, #11, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0209] In yet another example (e.g., 1411 in FIG. 14B), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the sixth, eighth, tenth, and twelfth
symbols in the S-SSB (i.e., symbols #5, #7, #9, and #11 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, seventh, ninth, eleventh, and thirteenth symbols in the
S-SSB (i.e., symbols #4, #6, #8, #10, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0210] In yet another example (e.g., 1412 in FIG. 14B), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the tenth, eleventh, twelfth, and
thirteenth symbols in the S-SSB (i.e., symbols #9, #10, #11, and
#12 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the fifth, sixth, seventh, eighth, and ninth symbols
in the S-SSB (i.e., symbols #4, #5, #6, #7, and #8 in term of the
symbol index within the slot) are mapped for PSBCH.
[0211] In yet another example (e.g., 1413 in FIG. 14B), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the eighth, ninth, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #7, #8, #9, and #10 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, sixth, seventh, twelfth, and thirteenth symbols in the S-SSB
(i.e., symbols #4, #5, #6, #11, and #12 in term of the symbol index
within the slot) are mapped for PSBCH.
[0212] In yet another example (e.g., 1414 in FIG. 14B), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, eighth, ninth, and tenth
symbols in the S-SSB (i.e., symbols #6, #7, #8, and #9 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, sixth, eleventh, twelfth, and thirteenth symbols in the
S-SSB (i.e., symbols #4, #5, #10, #11, and #12 in term of the
symbol index within the slot) are mapped for PSBCH.
[0213] In yet another example (e.g., 1415 in FIG. 14B), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, eighth, tenth, and
eleventh symbols in the S-SSB (i.e., symbols #6, #7, #9, and #10 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the fifth, sixth, ninth, twelfth, and thirteenth symbols in the
S-SSB (i.e., symbols #4, #5, #8, #11, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0214] In yet another example (e.g., 1416 in FIG. 14B), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the sixth, seventh, eleventh, and
twelfth symbols in the S-SSB (i.e., symbols #5, #6, #10, and #11 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the fifth, eighth, ninth, tenth, and thirteenth symbols in the
S-SSB (i.e., symbols #4, #7, #8, #9, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0215] In yet another example (e.g., 1421 in FIG. 14C), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the sixth, ninth, and twelfth symbols in the S-SSB
(i.e., symbols #5, #8, and #11 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, fifth, seventh,
eighth, tenth, eleventh, and thirteenth symbols in the S-SSB (i.e.,
symbols #0, #4, #6, #7, #9, #10, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0216] In yet another example (e.g., 1422 in FIG. 14C), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the eleventh, twelfth, and thirteenth symbols in the
S-SSB (i.e., symbols #10, #11, and #12 in term of the symbol index
within the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs
or 24 RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB
is larger than 12 RBs such as 20 RBs), and the first, fifth, sixth,
seventh, eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #0, #4, #5, #6, #7, #8, and #9 in term of the symbol index
within the slot) are mapped for PSBCH.
[0217] In yet another example (e.g., 1423 in FIG. 14C), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #7, #8, and #9 in term of the symbol index within the slot)
are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or
multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger than
12 RBs such as 20 RBs), and the first, fifth, sixth, seventh,
eleventh, twelfth, and thirteenth symbols in the S-SSB (i.e.,
symbols #0, #4, #5, #6, #10, #11, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0218] In yet another example (e.g., 1424 in FIG. 14C), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the fifth, eighth, and eleventh symbols in the S-SSB
(i.e., symbols #4, #7, and #10 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, sixth, seventh,
ninth, tenth, twelfth, and thirteenth symbols in the S-SSB (i.e.,
symbols #0, #5, #6, #8, #9, #11, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0219] In yet another example (e.g., 1431 in FIG. 14D), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
sixth, and tenth symbols in the S-SSB (i.e., symbols #5, and #9 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, fourth, fifth, seventh, eighth, ninth, eleventh,
twelfth, and thirteenth symbols in the S-SSB (i.e., symbols #0, #3,
#4, #6, #7, #8, #10, #11, and #12 in term of the symbol index
within the slot) are mapped for PSBCH.
[0220] In yet another example (e.g., 1432 in FIG. 14D), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
twelfth, and thirteenth symbols in the S-SSB (i.e., symbols #11,
and #12 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the first, fourth, fifth, sixth, seventh, eighth,
ninth, tenth, and eleventh symbols in the S-SSB (i.e., symbols #0,
#3, #4, #5, #6, #7, #8, #9, and #10 in term of the symbol index
within the slot) are mapped for PSBCH.
[0221] In yet another example (e.g., 1433 in FIG. 14D), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
eighth, and ninth symbols in the S-SSB (i.e., symbols #7, and #8 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, fourth, fifth, sixth, seventh, tenth, eleventh,
twelfth, and thirteenth symbols in the S-SSB (i.e., symbols #0, #3,
#4, #5, #6, #9, #10, #11, and #12 in term of the symbol index
within the slot) are mapped for PSBCH.
[0222] In yet another example (e.g., 1434 in FIG. 14D), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
fourth, and ninth symbols in the S-SSB (i.e., symbols #3, and #8 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, fifth, sixth, seventh, eighth, tenth, eleventh,
twelfth, and thirteenth symbols in the S-SSB (i.e., symbols #0, #4,
#5, #6, #7, #9, #10, #11, and #12 in term of the symbol index
within the slot) are mapped for PSBCH.
[0223] In yet another example (e.g., 1435 in FIG. 14D), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
fifth, and ninth symbols in the S-SSB (i.e., symbols #4, and #8 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, fourth, sixth, seventh, eighth, tenth, eleventh,
twelfth, and thirteenth symbols in the S-SSB (i.e., symbols #0, #3,
#5, #6, #7, #9, #10, #11, and #12 in term of the symbol index
within the slot) are mapped for PSBCH.
[0224] In yet another example (e.g., 1436 in FIG. 14D), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
fifth, and tenth symbols in the S-SSB (i.e., symbols #4, and #9 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, fourth, sixth, seventh, eighth, ninth, eleventh,
twelfth, and thirteenth symbols in the S-SSB (i.e., symbols #0, #3,
#5, #6, #7, #8, #10, #11, and #12 in term of the symbol index
within the slot) are mapped for PSBCH.
[0225] In yet another example (e.g., 1441 in FIG. 14E), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the eighth, ninth, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #7, #8, #9, and #10 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
first, sixth, seventh, twelfth, and thirteenth symbols in the S-SSB
(i.e., symbols #0, #5, #6, #11, and #12 in term of the symbol index
within the slot) are mapped for PSBCH.
[0226] In yet another example (e.g., 1442 in FIG. 14E), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the tenth, eleventh, twelfth, and
thirteenth symbols in the S-SSB (i.e., symbols #9, #10, #11, and
#12 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the first, sixth, seventh, eighth, and ninth symbols
in the S-SSB (i.e., symbols #0, #5, #6, #7, and #8 in term of the
symbol index within the slot) are mapped for PSBCH.
[0227] In a seventeenth example (e.g., 1443 in FIG. 14E), symbols
#0 to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, ninth, eleventh, and
thirteenth symbols in the S-SSB (i.e., symbols #6, #8, #10, and #12
in term of the symbol index within the slot) are mapped for S-SSS
(if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS
and PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20
RBs), and the first, sixth, eighth, tenth, and twelfth symbols in
the S-SSB (i.e., symbols #0, #5, #7, #9, and #11 in term of the
symbol index within the slot) are mapped for PSBCH.
[0228] In yet another example (e.g., 1444 in FIG. 14E), symbols #0
to #12 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the sixth, eighth, tenth, and twelfth
symbols in the S-SSB (i.e., symbols #5, #7, #9, and #11 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
first, seventh, ninth, eleventh, and thirteenth symbols in the
S-SSB (i.e., symbols #0, #6, #8, #10, and #12 in term of the symbol
index within the slot) are mapped for PSBCH.
[0229] FIG. 15A, FIG. 15B, and FIG. 15C illustrate examples of this
embodiment wherein one slot with 14 symbols contains one PSBCH
block (SSB), and the PSBCH block contains 14 symbols, and no symbol
in the slot is reserved for other purpose. In one consideration,
each PSBCH block contains 3 symbols for S-PSS, 3 symbols for S-SSS
or multiplexing of S-SSS and PSBCH, and 8 symbols for PSBCH. In
another consideration, each PSBCH block contains 2 symbols for
S-PSS, 2 symbols for S-SSS or multiplexing of S-SSS and PSBCH, and
10 symbols for PSBCH. In yet another consideration, each PSBCH
block contains 4 symbols for S-PSS, 4 symbols for S-SSS or
multiplexing of S-SSS and PSBCH, and 6 symbols for PSBCH.
[0230] In one example (e.g., 1501 in FIG. 15A), symbols #0 to #13
are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #0, #1, and
#2 in term of the symbol index within the slot) are mapped for
S-PSS, the sixth, ninth, and twelfth symbols in the S-SSB (i.e.,
symbols #5, #8, and #11 in term of the symbol index within the
slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs)
or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger
than 12 RBs such as 20 RBs), and the fourth, fifth, seventh,
eighth, ninth, eleventh, thirteenth, and fourteenth symbols in the
S-SSB (i.e., symbols #3, #4, #6, #7, #9, #10, #12, and #13 in term
of the symbol index within the slot) are mapped for PSBCH.
[0231] In another example (e.g., 1502 in FIG. 15A), symbols #0 to
#13 are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #0, #1, and
#2 in term of the symbol index within the slot) are mapped for
S-PSS, the twelfth, thirteenth, and fourteenth symbols in the S-SSB
(i.e., symbols #11, #12, and #13 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the fourth, fifth, seventh,
eighth, ninth, eleventh, thirteenth, and fourteenth symbols in the
S-SSB (i.e., symbols #3, #4, #6, #7, #9, #10, #12, and #13 in term
of the symbol index within the slot) are mapped for PSBCH.
[0232] In a third example (e.g., 1503 in FIG. 15A), symbols #0 to
#13 are mapped for the S-SSB within the slot, wherein: the first,
second, and third symbols in the S-SSB (i.e., symbols #0, #1, and
#2 in term of the symbol index within the slot) are mapped for
S-PSS, the eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #7, #8, and #9 in term of the symbol index within the slot)
are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or
multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger than
12 RBs such as 20 RBs), and the fourth, fifth, sixth, seventh,
eleventh, twelfth, thirteenth, and fourteenth symbols in the S-SSB
(i.e., symbols #3, #4, #5, #6, #10, #11, #12, and #13 in term of
the symbol index within the slot) are mapped for PSBCH.
[0233] In yet another example (e.g., 1504 in FIG. 15A), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the eighth, ninth, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #7, #8, #9, and #10 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
fifth, sixth, seventh, twelfth, thirteenth, and fourteenth symbols
in the S-SSB (i.e., symbols #4, #5, #6, #11, #12, and #13 in term
of the symbol index within the slot) are mapped for PSBCH.
[0234] In yet another example (e.g., 1505 in FIG. 15A), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the eleventh, twelfth, thirteenth, and
fourteenth symbols in the S-SSB (i.e., symbols #10, #11, #12, and
#13 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the fifth, sixth, seventh, eighth, ninth, and tenth
symbols in the S-SSB (i.e., symbols #4, #5, #6, #7, #8, and #9 in
term of the symbol index within the slot) are mapped for PSBCH.
[0235] In yet another example (e.g., 1506 in FIG. 15A), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
first, second, third, and fourth symbols in the S-SSB (i.e.,
symbols #0, #1, #2, and #3 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, eighth, eleventh, and
twelfth symbols in the S-SSB (i.e., symbols #6, #7, #10, and #11 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the fifth, sixth, ninth, tenth, thirteenth, and fourteenth
symbols in the S-SSB (i.e., symbols #4, #5, #8, #9, #12, and #13 in
term of the symbol index within the slot) are mapped for PSBCH.
[0236] In yet another example (e.g., 1511 in FIG. 15B), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the seventh, tenth, and thirteenth symbols in the S-SSB
(i.e., symbols #6, #9, and #12 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, fifth, sixth,
eighth, ninth, eleventh, twelfth, and fourteenth symbols in the
S-SSB (i.e., symbols #0, #4, #5, #7, #8, #10, #11, and #13 in term
of the symbol index within the slot) are mapped for PSBCH.
[0237] In yet another example (e.g., 1512 in FIG. 15B), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the twelfth, thirteenth, and fourteenth symbols in the
S-SSB (i.e., symbols #11, #12, and #13 in term of the symbol index
within the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs
or 24 RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB
is larger than 12 RBs such as 20 RBs), and the first, fifth, sixth,
seventh, eighth, ninth, tenth, and eleventh symbols in the S-SSB
(i.e., symbols #0, #4, #5, #6, #7, #8, #9, and #10 in term of the
symbol index within the slot) are mapped for PSBCH.
[0238] In yet another example (e.g., 1513 in FIG. 15B), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the eighth, ninth, and tenth symbols in the S-SSB (i.e.,
symbols #7, #8, and #9 in term of the symbol index within the slot)
are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or
multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger than
12 RBs such as 20 RBs), and the first, fifth, sixth, seventh,
eleventh, twelfth, thirteenth, and fourteenth symbols in the S-SSB
(i.e., symbols #0, #4, #5, #6, #10, #11, #12, and #13 in term of
the symbol index within the slot) are mapped for PSBCH.
[0239] In yet another example (e.g., 1514 in FIG. 15B), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the ninth, tenth, and eleventh symbols in the S-SSB
(i.e., symbols #8, #9, and #10 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, fifth, sixth,
seventh, eighth, twelfth, thirteenth, and fourteenth symbols in the
S-SSB (i.e., symbols #0, #4, #5, #6, #7, #11, #12, and #13 in term
of the symbol index within the slot) are mapped for PSBCH.
[0240] In yet another example (e.g., 1521 in FIG. 15C), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the eleventh, twelfth, thirteenth, and
fourteenth symbols in the S-SSB (i.e., symbols #10, #11, #12, and
#13 in term of the symbol index within the slot) are mapped for
S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of
S-SSS and PSBCH (if the BW of S-SSB is larger than 12 RBs such as
20 RBs), and the first, sixth, seventh, eighth, ninth, and tenth
symbols in the S-SSB (i.e., symbols #0, #5, #6, #7, #8, and #9 in
term of the symbol index within the slot) are mapped for PSBCH.
[0241] In yet another example (e.g., 1522 in FIG. 15C), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the seventh, eighth, eleventh, and
twelfth symbols in the S-SSB (i.e., symbols #6, #7, #10, and #11 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, sixth, ninth, tenth, thirteenth, and fourteenth
symbols in the S-SSB (i.e., symbols #0, #5, #8, #9, #12, and #13 in
term of the symbol index within the slot) are mapped for PSBCH.
[0242] In yet another example (e.g., 1523 in FIG. 15C), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the eighth, ninth, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #7, #8, #9, and #10 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
first, sixth, seventh, twelfth, thirteenth, and fourteenth symbols
in the S-SSB (i.e., symbols #0, #5, #6, #11, #12, and #13 in term
of the symbol index within the slot) are mapped for PSBCH.
[0243] In yet another example (e.g., 1524 in FIG. 15C), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the ninth, tenth, eleventh, and twelfth
symbols in the S-SSB (i.e., symbols #8, #9, #10, and #11 in term of
the symbol index within the slot) are mapped for S-SSS (if the BW
of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH
(if the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
first, sixth, seventh, eighth, thirteenth, and fourteenth symbols
in the S-SSB (i.e., symbols #0, #5, #6, #7, #12, and #13 in term of
the symbol index within the slot) are mapped for PSBCH.
[0244] In yet another example (e.g., 1525 in FIG. 15C), symbols #0
to #13 are mapped for the S-SSB within the slot, wherein: the
second, third, fourth, and fifth symbols in the S-SSB (i.e.,
symbols #1, #2, #3, and #4 in term of the symbol index within the
slot) are mapped for S-PSS, the eighth, ninth, twelfth, and
thirteenth symbols in the S-SSB (i.e., symbols #7, #8, #11, and #12
in term of the symbol index within the slot) are mapped for S-SSS
(if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS
and PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20
RBs), and the first, sixth, seventh, tenth, eleventh, and
fourteenth symbols in the S-SSB (i.e., symbols #0, #5, #6, #9, #10,
and #13 in term of the symbol index within the slot) are mapped for
PSBCH.
[0245] FIG. 16A and FIG. 16B illustrate examples of this embodiment
wherein one slot with 12 symbols (e.g., for extended CP) contains
one PSBCH block (SSB), and the PSBCH block contains 11 symbols, and
one symbol (e.g., the last symbol) in the slot is reserved for
other purpose such as transmission-to-reception (TX/RX) switch gap.
In one consideration, each PSBCH block contains 3 symbols for
S-PSS, 3 symbols for S-SSS or multiplexing of S-SSS and PSBCH, and
5 symbols for PSBCH. In another consideration, each PSBCH block
contains 2 symbols for S-PSS, 2 symbols for S-SSS or multiplexing
of S-SSS and PSBCH, and 7 symbols for PSBCH. In yet another
consideration, each PSBCH block contains 4 symbols for S-PSS, 4
symbols for S-SSS or multiplexing of S-SSS and PSBCH, and 3 symbols
for PSBCH.
[0246] In one example (e.g., 1601 in FIG. 16A), symbols #0 to #10
are mapped for the S-SSB within the slot, wherein: the second, and
third symbols in the S-SSB (i.e., symbols #1, and #2 in term of the
symbol index within the slot) are mapped for S-PSS, the sixth, and
ninth symbols in the S-SSB (i.e., symbols #5, and #8 in term of the
symbol index within the slot) are mapped for S-SSS (if the BW of
S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and PSBCH (if
the BW of S-SSB is larger than 12 RBs such as 20 RBs), and the
first, fourth, fifth, seventh, eighth, tenth, and eleventh symbols
in the S-SSB (i.e., symbols #0, #3, #4, #6, #7, #9, and #10 in term
of the symbol index within the slot) are mapped for PSBCH.
[0247] In another example (e.g., 1602 in FIG. 16A), symbols #0 to
#10 are mapped for the S-SSB within the slot, wherein: the second,
and third symbols in the S-SSB (i.e., symbols #1, and #2 in term of
the symbol index within the slot) are mapped for S-PSS, the
seventh, and eighth symbols in the S-SSB (i.e., symbols #6, and #7
in term of the symbol index within the slot) are mapped for S-SSS
(if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS
and PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20
RBs), and the first, fourth, fifth, sixth, ninth, tenth, and
eleventh symbols in the S-SSB (i.e., symbols #0, #3, #4, #5, #8,
#9, and #10 in term of the symbol index within the slot) are mapped
for PSBCH.
[0248] In yet another example (e.g., 1603 in FIG. 16A), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
fifth, and ninth symbols in the S-SSB (i.e., symbols #4, and #8 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, fourth, sixth, seventh, eighth, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #0, #3, #5, #6, #7, #9, and #10
in term of the symbol index within the slot) are mapped for
PSBCH.
[0249] In yet another example (e.g., 1604 in FIG. 16A), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
fifth, and eighth symbols in the S-SSB (i.e., symbols #4, and #7 in
term of the symbol index within the slot) are mapped for S-SSS (if
the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS and
PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20 RBs),
and the first, fourth, sixth, seventh, ninth, tenth, and eleventh
symbols in the S-SSB (i.e., symbols #0, #3, #5, #6, #8, #9, and #10
in term of the symbol index within the slot) are mapped for
PSBCH.
[0250] In yet another example (e.g., 1605 in FIG. 16A), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
fourth, and eighth symbols in the S-SSB (i.e., symbols #3, and #7
in term of the symbol index within the slot) are mapped for S-SSS
(if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS
and PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20
RBs), and the first, fifth, sixth, seventh, ninth, tenth, and
eleventh symbols in the S-SSB (i.e., symbols #0, #4, #5, #6, #8,
#9, and #10 in term of the symbol index within the slot) are mapped
for PSBCH.
[0251] In yet another example (e.g., 1606 in FIG. 16A), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, and third symbols in the S-SSB (i.e., symbols #1, and #2 in
term of the symbol index within the slot) are mapped for S-PSS, the
tenth, and eleventh symbols in the S-SSB (i.e., symbols #9, and #10
in term of the symbol index within the slot) are mapped for S-SSS
(if the BW of S-SSB is 12 RBs or 24 RBs) or multiplexing of S-SSS
and PSBCH (if the BW of S-SSB is larger than 12 RBs such as 20
RBs), and the first, fourth, fifth, sixth, seventh, eighth, and
ninth symbols in the S-SSB (i.e., symbols #0, #3, #4, #5, #6, #7,
and #8 in term of the symbol index within the slot) are mapped for
PSBCH.
[0252] In yet another example (e.g., 1611 in FIG. 16B), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the sixth, eighth, and tenth symbols in the S-SSB (i.e.,
symbols #5, #7, and #9 in term of the symbol index within the slot)
are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24 RBs) or
multiplexing of S-SSS and PSBCH (if the BW of S-SSB is larger than
12 RBs such as 20 RBs), and the first, fifth, seventh, ninth, and
eleventh symbols in the S-SSB (i.e., symbols #0, #4, #6, #8, and
#10 in term of the symbol index within the slot) are mapped for
PSBCH.
[0253] In yet another example (e.g., 1612 in FIG. 16B), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the fifth, seventh, and ninth symbols in the S-SSB
(i.e., symbols #4, #6, and #8 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, sixth, eighth,
tenth, and eleventh symbols in the S-SSB (i.e., symbols #0, #5, #7,
#9, and #10 in term of the symbol index within the slot) are mapped
for PSBCH.
[0254] In yet another example (e.g., 1613 in FIG. 16B), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the seventh, eighth, and ninth symbols in the S-SSB
(i.e., symbols #6, #7, and #8 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, fifth, sixth,
tenth, and eleventh symbols in the S-SSB (i.e., symbols #0, #4, #5,
#9, and #10 in term of the symbol index within the slot) are mapped
for PSBCH.
[0255] In yet another example (e.g., 1614 in FIG. 16B), symbols #0
to #10 are mapped for the S-SSB within the slot, wherein: the
second, third, and fourth symbols in the S-SSB (i.e., symbols #1,
#2, and #3 in term of the symbol index within the slot) are mapped
for S-PSS, the ninth, tenth, and eleventh symbols in the S-SSB
(i.e., symbols #8, #9, and #10 in term of the symbol index within
the slot) are mapped for S-SSS (if the BW of S-SSB is 12 RBs or 24
RBs) or multiplexing of S-SSS and PSBCH (if the BW of S-SSB is
larger than 12 RBs such as 20 RBs), and the first, fifth, sixth,
seventh, and eighth symbols in the S-SSB (i.e., symbols #0, #4, #5,
#6, and #7 in term of the symbol index within the slot) are mapped
for PSBCH.
[0256] In a first approach for the time-domain mapping of an S-SSB
burst set, contiguous slots containing an S-SSB burst set can be
mapped from a predefined location, such as the beginning of the
period for transmitting the S-SSB burst set.
[0257] FIG. 17 illustrates an example time-domain mapping of an
S-SSB burst set 1700 according to embodiments of the present
disclosure. The embodiment of the time-domain mapping of an S-SSB
burst set 1700 illustrated in FIG. 17 is for illustration only.
FIG. 17 does not limit the scope of this disclosure to any
particular implementation.
[0258] In one example of this approach (e.g., 1701 in FIG. 17), if
the periodicity for transmitting the S-SSB burst set is N slots,
and the duration of the S-SSB burst set is M slots, contiguous
slots containing an S-SSB burst set can start from the first slot
of every period of N slots, e.g., the burst set is mapped to slots
#0, #1, . . . , #M-1.
[0259] In a second approach for the time-domain mapping of an S-SSB
burst set, contiguous slots containing an S-SSB burst set can be
mapped from starting from any slot within the period for
transmitting the S-SSB burst set. In this approach, the starting
location of the S-SSB burst set (e.g., slot index within the
period) can be indicated to the V2X UE (such as using
synchronization signals, or PBCH content, or DMRS of PBCH, or their
combination), or can be pre-configured to the V2X UE.
[0260] In one example of this approach (e.g., 1702 in FIG. 17), if
the periodicity for transmitting the S-SSB burst set is N slots,
and the duration of the S-SSB burst set is M slots, then the
contiguous slots containing an S-SSB burst set can be starting from
any slot within the N slots (e.g., slots #S, #S+1, . . . , #S+M-1),
and the starting location (e.g., information about slot S) can be
indicated to the V2X UE (e.g., in the form of a slot index, or a
combination of system frame number (SFN)/direct frame number (DFN)
and a slot index within the indicated SFN/DFN), such as using
synchronization signals, or PBCH content, or DMRS of PBCH, or their
combination, or can be pre-configured to the V2X UE.
[0261] In another example of this approach, if the periodicity for
transmitting the S-SSB burst set is N slots, and the duration of
the S-SSB burst set is M slots, then the contiguous slots
containing an S-SSB burst set can be starting from any frame
boundary, and the starting location (e.g., information about slot
S) can be indicated to the V2X UE (e.g., in the form of a system
frame number (SFN)/direct frame number (DFN)), such as using
synchronization signals, or PBCH content, or DMRS of PBCH, or their
combination, or can be pre-configured to the V2X UE.
[0262] In yet another example of this approach, if the periodicity
for transmitting the S-SSB burst set is N slots, and the duration
of the S-SSB burst set is M slots, then the contiguous slots
containing an S-SSB burst set can be starting from any half frame
boundary, and the starting location (e.g., information about slot
S) can be indicated to the V2X UE (e.g., in the form of half frame
index within a system frame number (SFN)/direct frame number (DFN)
and the SFN/DFN), such as using synchronization signals, or PBCH
content, or DMRS of PBCH, or their combination, or can be
pre-configured to the V2X UE.
[0263] In a third approach for the time-domain mapping of an S-SSB
burst set, slots containing an S-SSB burst set can be
non-contiguous. In one sub-approach, every transmission of the
S-SSB burst set only has one slot, and the multiple slots
containing an S-SSB burst set can be with uniform interval within
the period of the S-SSB burst set.
[0264] For a first example of this approach (e.g., 1703 in FIG.
17), if the periodicity for transmitting the S-SSB burst set is N
slots, and the duration of the S-SSB burst set is M slots, the
slots containing S-SSBs can be uniformly distributed within the
whole period duration, e.g., the slots containing S-SSBs are #0,
#(N/M), #2*(N/M), . . . , #(M-1)*(N/M).
[0265] In a second example of this approach (e.g., 1704 in FIG.
17), if the periodicity for transmitting the S-SSB burst set is N
slots, and the duration of the S-SSB burst set is M slots, the
slots containing S-SSBs can be uniformly distributed within a
subset of the period duration, e.g., the slots containing S-SSBs
are #0, #(N/K), #2*(N/K), . . . , #(M-1)*(N/K), where K is a
predefined value and K>M.
[0266] In a third example of this approach (e.g., 1705 in FIG. 17),
if the periodicity for transmitting the S-SSB burst set is N slots,
and the duration of the S-SSB burst set is M slots, the slots
containing S-SSBs can be uniformly distributed within the whole
period duration, and the starting slot can be any viable and
indicated to the V2X UE, e.g., the slots containing S-SSBs are #X,
#X+(N/M), #X+2*(N/M), . . . , #X+(M-1)*(N/M), wherein X is the
starting location and can be indicated to the V2X UE (e.g., in the
form of a slot index, or a combination of SFN/DFN and a slot index
within the indicated SFN/DFN), such as using synchronization
signals, or PBCH content, or DMRS of PBCH, or their combination, or
can be pre-configured to the V2X UE.
[0267] In a fourth example of this approach (e.g., 1706 in FIG.
17), if the periodicity for transmitting the S-SSB burst set is N
slots, and the duration of the S-SSB burst set is M slots, the
slots containing S-SSBs can be uniformly distributed within a
subset of the period duration, and the starting slot can be any
viable and indicated to the V2X UE, e.g., the slots containing
S-SSBs are #X, #X+(N/K), #X+2*(N/K), . . . , #X+(M-1)*(N/K),
wherein K is a predefined value and K>M, and X is the starting
location and can be indicated to the V2X UE (e.g., in the form of a
slot index, or a combination of SFN/DFN and a slot index within the
indicated SFN/DFN), such as using synchronization signals, or PBCH
content, or DMRS of PBCH, or their combination, or can be
pre-configured to the V2X UE.
[0268] In one embodiment, the design of S-PSS sequence can be
combined with examples in the other embodiments of this
disclosure.
[0269] In one approach, the number of sequence constructing S-PSS
within each symbol is one (i.e., N_SPSS=1). In one aspect of this
approach, the sequence constructing S-PSS does not carry any
information about sidelink synchronization ID. In another aspect of
this approach, the set of sidelink synchronization IDs can still be
divided into groups to represent different synchronization sources,
wherein the size of each group may not be the same. For one example
of this approach, 3 groups of sidelink synchronization IDs are for
indicating GNSS, in-coverage UE, and out-of-coverage UE,
respectively, wherein the number of IDs for each group may not be
the same.
[0270] In a first example of this approach, when there is a single
symbol mapped for S-PSS within a S-SSB, the single sequence
constructing S-PSS is one of the sequences constructing NR-PSS
(e.g., choosing 1 from the 3 sequences constructing NR-PSS).
[0271] In a second example of this approach, when there is a single
symbol mapped for S-PSS within an S-SSB, the single sequence
constructing S-PSS is orthogonal or with low cross-correlation to
all the sequences constructing NR-PSS.
[0272] In a third example of this approach, when there are multiple
symbols mapped for S-PSS within an S-SSB, the single sequence
constructing the S-PSS in different symbols is different, and the
sequences constructing S-PSSs are from the set or a subset of the
set of the sequences constructing NR-PSS (e.g., choosing 2 or 3
from the 3 sequences constructing NR-PSS).
[0273] In a fourth example of this approach, when there are
multiple symbols mapped for S-PSS within a S-SSB, the single
sequence constructing the S-PSS in different symbols is different,
and some of the sequences constructing S-PSSs in one symbol is from
the set or a subset of the set of the sequences constructing NR-PSS
(e.g., choosing 1 or 2 or 3 from the 3 sequences constructing
NR-PSS), and the others are orthogonal or with low
cross-correlation to the sequence from the subset of the sequences
constructing NR-PSS.
[0274] In a fifth example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the single sequence
constructing the S-PSS in different symbols is different, and none
of the sequences constructing S-PSSs is from the set of sequences
constructing NR-PSS, and all the sequences are orthogonal or with
low cross-correlation to all the sequences constructing NR-PSS.
[0275] In a sixth example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the single sequence
constructing the S-PSS in different symbols is the same, but mapped
in different pattern to the symbols for S-PSS. For example, the
single sequence constructing S-PSS is mapped in low-to-high order
in the frequency domain in some of the symbols for S-PSS, and
mapped in high-to-low order in the frequency domain in the other
symbol for S-PSS.
[0276] In a seventh example of this approach, when there are
multiple symbols mapped for S-PSS within a S-SSB, the single
sequence constructing the S-PSS in different symbols is the same,
and mapped to the symbols for S-PSS in the same pattern (e.g., the
symbols for S-PSS (not including CP) are repeated).
[0277] In an eighth example of this approach, when there are
multiple symbols mapped for S-PSS within a S-SSB, the single
sequence for S-PSS can be generated for and mapped to all the
symbols for S-PSS.
[0278] In another approach, the number of sequence constructing
S-PSS within each symbol is two (i.e., N_SPSS=2). In this approach,
the sequence constructing S-PSS can be used to identify the group
index within two groups of the sidelink synchronization IDs.
[0279] For one example on the two groups, it can be referred that
the synchronization source is from NR nodes or LTE node. For
another example on the two groups, it can be referred that the
synchronization source is within the coverage of gNB/eNB or not.
For yet another example on the two groups, it can be referred that
the synchronization source is a NodeB or UE. For yet another
example of the two groups, it can be referred that the
synchronization source is either one of within the coverage of a
gNB/eNB or GNSS, or out of the coverage of a gNB/eNB. For yet
another example of the two groups, it can be referred that the
synchronization source is either within the coverage of a gNB/eNB,
or one of out of the coverage of a gNB/eNB or GNSS.
[0280] For one example on the number of sidelink synchronization
IDs within each group, the size of two groups can be identical
(e.g., easy for S-SSS sequence design). For another example on the
number of sidelink synchronization IDs within each group, the size
of two groups can be not identical (e.g., if the two groups of IDs
are referring to out of gNB/eNB coverage and within gNB/eNB
coverage, the number of IDs in each group may not be the same
regarding the use case of each group).
[0281] In a first example of this approach, when there is a single
symbol mapped for S-PSS within a S-SSB, the set of sequences
constructing S-PSS is a subset of the sequences constructing NR-PSS
(e.g., choosing 2 from the 3 sequences constructing NR-PSS).
[0282] In a second example of this approach, when there is a single
symbol mapped for S-PSS within a S-SSB, none of the sequences
constructing S-PSSs is from the set of sequences constructing
NR-PSS, and is orthogonal or with low cross-correlation to all the
sequences constructing NR-PSS.
[0283] In a third example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the sets of sequences
constructing the S-PSS in different symbols are different, and the
sets of sequences constructing S-PSSs in different symbols are
orthogonal or with low cross-correlation across the sets. For
instance, one set of sequences constructing S-PSS for some of the
symbols is a subset of the sequences constructing NR-PSS (e.g.,
choosing 2 from the 3 sequences constructing NR-PSS), and the
remaining set(s) of sequences are not from the set of sequences
constructing NR-PSS and orthogonal or with low cross-correlation to
the set of sequences constructing NR-PSS.
[0284] In a fourth example of this approach, when there are
multiple symbols mapped for S-PSS within a S-SSB, the sets of
sequences constructing the S-PSS in different symbols are
different, and the sets of sequences constructing S-PSSs in
different symbols are orthogonal or with low cross-correlation
across the sets. For instance, none of the sequences constructing
S-PSSs is from the set of sequences constructing NR-PSS, and
orthogonal or with low cross-correlation to all the sequences
constructing NR-PSS.
[0285] In a fifth example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the set of sequences
constructing the S-PSS in different symbols is the same, but mapped
in different pattern to the symbols for S-PSS. For example, the
sequence constructing S-PSS is mapped in low-to-high order in the
frequency domain in one of the symbols for S-PSS, and mapped in
high-to-low order in the frequency domain in the other symbol for
S-PSS.
[0286] In a sixth example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the set of sequences
constructing the S-PSS in different symbols is the same, and mapped
to the symbols for S-PSS in the same pattern (e.g., the symbols for
S-PSS (not including CP) are repeated).
[0287] In a seventh example of this approach, when there are
multiple symbols mapped for S-PSS within a S-SSB, each of the two
sequences for S-PSS can be generated for and mapped to all the
symbols for S-PSS.
[0288] In yet another approach, the number of sequence constructing
S-PSS within each symbol is three (i.e., N_SPSS=3). In this
approach, the sequence constructing S-PSS can be used to identify
the sidelink synchronization ID group index.
[0289] For one example on the three groups, it can be referred that
different type of synchronization source are considered, e.g., NR
gNB, NR UE, or LTE eNB.
[0290] For one example, the number of sidelink synchronization IDs
within each group is identical (e.g., easy for S-SSS sequence
design), and each of the group refers to a particular use case. For
another example, the number of sidelink synchronization IDs within
each group is identical (e.g., easy for S-SSS sequence design), and
two groups refer to a use case while the other group refers to
another use case (e.g., 2 groups for within gNB coverage and 1
group for out of gNB/eNB coverage, or 1 group for within gNB/eNB
coverage and 2 groups for out of gNB/eNB coverage). For yet another
example, the number of sidelink synchronization IDs within each
group is not identical (e.g., if the three groups of IDs are
referring to different use cases, the number of IDs in each group
may not be the same regarding the use case of each group).
[0291] In a first example of this approach, when there is a single
symbol mapped for S-PSS within a S-SSB, the set of sequences
constructing S-PSS is the set of the sequences constructing NR-PSS
(e.g., choosing the 3 sequences constructing NR-PSS).
[0292] In a second example of this approach, when there is a single
symbol mapped for S-PSS within a S-SSB, none of the sequences
constructing S-PSSs is from the set of sequences constructing
NR-PSS, and orthogonal or with low cross-correlation to all the
sequences constructing NR-PSS.
[0293] In a third example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the sets of sequences
constructing the S-PSS in different symbols are different, and the
sets of sequences constructing S-PSSs in different symbols are
orthogonal or with low cross-correlation across the sets. For
instance, one set of sequences constructing S-PSS for some of the
symbols is from the set of sequences constructing NR-PSS (e.g.,
choosing the 3 sequences constructing NR-PSS), and the remaining
set(s) of sequences are not from the set of sequences constructing
NR-PSS and orthogonal or with low cross-correlation to the set of
sequences constructing NR-PSS.
[0294] In a fourth example of this approach, when there are
multiple symbols mapped for S-PSS within a S-SSB, the sets of
sequences constructing the S-PSS in different symbols are
different, and the sets of sequences constructing S-PSSs in
different symbols are orthogonal or with low cross-correlation
across the sets. For instance, none of the sequences constructing
S-PSSs is from the set of sequences constructing NR-PSS, and
orthogonal or with low cross-correlation to all the sequences
constructing NR-PSS.
[0295] In a fifth example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the set of sequences
constructing the S-PSS in different symbols is the same, but mapped
in different pattern to the symbols for S-PSS. For example, the
sequence constructing S-PSS is mapped in low-to-high order in the
frequency domain in one of the symbols for S-PSS, and mapped in
high-to-low order in the frequency domain in the other symbol for
S-PSS.
[0296] In a sixth example of this approach, when there are multiple
symbols mapped for S-PSS within a S-SSB, the set of sequences
constructing the S-PSS in different symbols is the same, and mapped
to the symbols for S-PSS in the same pattern (e.g., the symbols for
S-PSS (not including CP) are repeated).
[0297] In a seventh example of this approach, when there are
multiple symbols mapped for S-PSS within a S-SSB, each of the three
sequences for S-PSS can be generated for and mapped to all the
symbols for S-PSS.
[0298] Some examples of sequences constructing S-PSS are
illustrated in details as follows, wherein the sequence design
reflects the above approaches in this embodiment. There can be
multiple examples utilized simultaneously (e.g., one example mapped
for one symbol for S-PSS, and another example mapped for another
symbol for S-PSS).
[0299] In one example III-1, the sequence d_SPSS(n) in a symbol for
S-PSS is defined by a BPSK modulated M-sequence with length-127,
and given by: d_SPSS(n)=1-2*x(m), m=(n+43*N_GID{circumflex over (
)}SL) mod 127, 0.ltoreq.n<127 where x(m) is M-sequence with
generator polynomial g(x)=x{circumflex over ( )}7+x{circumflex over
( )}4+1, i.e., x(i+7)=(x(i+4)+x(i)) mod 2 for i=0, 1, . . . , 119,
and initial condition of x(m) is given by x(6:0)=[1 1 1 0 1 1
0].
[0300] In one aspect, if the number of sequence for S-PSS in a
symbol is one, the SL synchronization ID group index
N_GID{circumflex over ( )}SL=0.
[0301] In another aspect, if the number of sequences for S-PSS in a
symbol are two, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1.
[0302] In yet another aspect, if the number of sequences for S-PSS
in a symbol are three, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1 or 2.
[0303] In one example of III-2, the sequence d_SPSS(n) in a symbol
for S-PSS is defined by a BPSK modulated M-sequence with
length-127, and given by: d_SPSS(n)=1-2*x(m),
m=(n+43*N_GID{circumflex over ( )}SL+K_1) mod 127,
0.ltoreq.n<127 where x(m) is M-sequence with generator
polynomial g(x)=x{circumflex over ( )}7+x{circumflex over ( )}4+1,
i.e., x(i+7)=(x(i+4)+x(i)) mod 2 for i=0, 1, . . . , 119, and
initial condition of x(m) is given by x(6:0)=[1 1 1 0 1 1 0], and
K_1 is a predefined and constant integer other than 0, 43, or
86.
[0304] In one aspect, if the number of sequence for S-PSS in a
symbol is one, the SL synchronization ID group index
N_GID{circumflex over ( )}SL=0.
[0305] In another aspect, if the number of sequences for S-PSS in a
symbol are two, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1.
[0306] In yet another aspect, if the number of sequences for S-PSS
in a symbol are three, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1 or 2.
[0307] In one sub-example, within a S-SSB, if the sequence for
S-PSS in a symbol for S-PSS is different from the sequence for
S-PSS in another symbol for S-PSS, K_1 can be selected differently
for the two symbols, e.g., K_1=21 for one symbol for S-PSS and
K_1=64 for another symbol for S-PSS, or K_1=22 for one symbol for
S-PSS and K_1=65 for another symbol for S-PSS.
[0308] FIG. 18 illustrates an example PAPR value of S-PSS sequences
1800 according to embodiments of the present disclosure. The
embodiment of the PAPR value of S-PSS sequences 1800 illustrated in
FIG. 18 is for illustration only. FIG. 18 does not limit the scope
of this disclosure to any particular implementation.
[0309] In another sub-example, K_1 can be chosen to minimize the
PAPR value of the S-PSS sequence, e.g., K_1=63 (e.g., according to
FIG. 18).
[0310] In yet another sub-example, K_1 can be chosen as with
maximum distance from cyclic shifts used for NR-PSS (e.g., 0, 43,
and 86), e.g., K_1=21, or K_1=22, or K_1=64, or K_1=65.
[0311] In one example of III-3, the sequence d_SPSS(n) in a symbol
for S-PSS is defined by a BPSK modulated M-sequence with
length-127, and given by: d_SPSS(n)=1-2*x(m), m=(n+K_1) mod 127,
0.ltoreq.n<127 where x(m) is M-sequence with generator
polynomial given by one of the example in Table 3, e.g.,
g(x)=x{circumflex over ( )}7+x+1 or g(x)=x{circumflex over (
)}7+x{circumflex over ( )}3+1, with a proper initial condition,
e.g., x(6:0)=[1 1 1 0 1 1 0] or [0 0 0 0 0 0 1]; and K_1 is an
integer that may be depending on the SL synchronization ID group
index N_GID{circumflex over ( )}SL.
[0312] FIG. 19 illustrates another example PAPR value of S-PSS
sequences 1900 according to embodiments of the present disclosure.
The embodiment of the PAPR value of S-PSS sequences 1900
illustrated in FIG. 19 is for illustration only. FIG. 19 does not
limit the scope of this disclosure to any particular
implementation.
[0313] FIG. 20 illustrates yet another example PAPR value of S-PSS
sequences 2000 according to embodiments of the present disclosure.
The embodiment of the PAPR value of S-PSS sequences 2000
illustrated in FIG. 20 is for illustration only. FIG. 20 does not
limit the scope of this disclosure to any particular
implementation.
[0314] In one aspect, if the number of sequence for S-PSS in a
symbol is one, the SL synchronization ID group index
N_GID{circumflex over ( )}SL=0. Then, K_1 can be a predefined
constant integer for this aspect. In one consideration for this
aspect, K_1 can be chosen as 0 (no cyclic shift for the single
sequence). For another consideration for this aspect, K_1 can be
chosen to minimize the PAPR value of the S-PSS sequence, e.g.,
K_1=72 (e.g., according to FIG. 19) if generator is using
g(x)=x{circumflex over ( )}7+x+1, or K_1=123 (e.g., according to
FIG. 20) if generator is using g(x)=x{circumflex over (
)}7+x{circumflex over ( )}3+1. In another consideration, K_1 can be
chosen as with maximum distance from cyclic shifts used for NR-PSS
(e.g., 0, 43, and 86), e.g., K_1=21, or K_1=22, or K_1=64, or
K_1=65.
[0315] In another aspect, if the number of sequences for S-PSS in a
symbol are two, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1. Then, K_1 is taking one of
two candidate predefined integer values, depending on the value of
N_GID{circumflex over ( )}SL. In one consideration for this aspect,
K_1 can be chosen to minimize the PAPR values of the S-PSS
sequences, e.g., K_1=72 for N_GID{circumflex over ( )}SL=0 and
K_1=102 for N_GID{circumflex over ( )}SL=1 (e.g., according to FIG.
19) if generator is using g(x)=x{circumflex over ( )}7+x+1, or
K_1=55 for N_GID{circumflex over ( )}SL=0 and K_1=123 for
N_GID{circumflex over ( )}SL=1 (e.g., according to FIG. 20) if
generator is using g(x)=x{circumflex over ( )}7+x{circumflex over (
)}3+1. In another consideration, K_1 can be chosen as with maximum
distance from cyclic shifts used for NR-PSS (e.g., 0, 43, and 86),
e.g., K_1=21 for N_GID{circumflex over ( )}SL=0 and K_1=65 for
N_GID{circumflex over ( )}SL=1. In yet another consideration, K_1
is in the form of K_1=N_GID{circumflex over ( )}SL*64+K_2, wherein
K_2 is a predefined integer, e.g., K_2=0, or K_2=32. In yet another
consideration K_1 is in the form of K_1=N_GID{circumflex over (
)}SL*43+K_2, wherein K_2 is a predefined integer, e.g., K_2=0, or
K_2=21, or K_2=22.
[0316] In yet another aspect, if the number of sequences for S-PSS
in a symbol are three, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1 or 2. In one consideration
for this aspect, K_1 can be chosen to minimize the PAPR values of
the S-PSS sequences. In another consideration, K_1 is in the form
of K_1=N_GID{circumflex over ( )}SL*43+K_2 wherein K_2 is a
predefined integer, e.g., K_2=0, or K_2=21, or K_2=22.
[0317] In one sub-example, within a S-SSB, if the sequence for
S-PSS in a symbol for S-PSS is different from the sequence for
S-PSS in another symbol for S-PSS, g(x) can be selected differently
for the two symbols, e.g., g(x)=x{circumflex over ( )}7+x+1 for one
symbol for S-PSS and g(x) x{circumflex over ( )}7+x{circumflex over
( )}3+1 for another symbol for S-PSS.
TABLE-US-00003 TABLE 3 Polynomial and corresponding method
Generator Corresponding generation method Index polynomial g(x) (i
= 0, 1, . . . , 119) 1 x{circumflex over ( )}7 + x{circumflex over
( )}6 + 1 x(i + 7) = x(i + 6) + x(i) 2 x{circumflex over ( )}7 + x
+ 1 x(i + 7) = x(i + 1) + x(i) 3 x{circumflex over ( )}7 +
x{circumflex over ( )}4 + 1 x(i + 7) = x(i + 4) + x(i) 4
x{circumflex over ( )}7 + x{circumflex over ( )}3 + 1 x(i + 7) =
x(i + 3) + x(i) 5 x{circumflex over ( )}7 + x{circumflex over ( )}6
+ x(i + 7) = x(i + 6) + x(i + 5) + x{circumflex over ( )}5 +
x{circumflex over ( )}4 + 1 x(i + 4) + x(i) 6 x{circumflex over (
)}7 + x{circumflex over ( )}3 + x(i + 7) = x(i + 3) + x(i + 2) +
x{circumflex over ( )}2 + x + 1 x(i + 1) + x(i) 7 x{circumflex over
( )}7 + x{circumflex over ( )}6 + x(i + 7) = x(i + 6) + x(i + 5) +
x{circumflex over ( )}5 + x{circumflex over ( )}2 + 1 x(i + 2) +
x(i) 8 x{circumflex over ( )}7 + x{circumflex over ( )}5 + x(i + 7)
= x(i + 5) + x(i + 2) + x{circumflex over ( )}2 + x + 1 x(i + 1) +
x(i) 9 x{circumflex over ( )}7 + x{circumflex over ( )}5 + x(i + 7)
= x(i + 5) + x(i + 4) + x{circumflex over ( )}4 + x{circumflex over
( )}3 + 1 x(i + 3) + x(i) 10 x{circumflex over ( )}7 + x{circumflex
over ( )}4 + x(i + 7) = x(i + 4) + x(i + 3) + x{circumflex over (
)}3 + x{circumflex over ( )}2 + 1 x(i + 2) + x(i) 11 x{circumflex
over ( )}7 + x{circumflex over ( )}6 + x(i + 7) = x(i + 6) + x(i +
4) + x{circumflex over ( )}4 + x{circumflex over ( )}2 + 1 x(i + 2)
+ x(i) 12 x{circumflex over ( )}7 + x{circumflex over ( )}5 + x(i +
7) = x(i + 5) + x(i + 3) + x{circumflex over ( )}3 + x + 1 x(i + 1)
+ x(i) 13 x{circumflex over ( )}7 + x{circumflex over ( )}6 + x(i +
7) = x(i + 6) + x(i + 4) + x{circumflex over ( )}4 + x + 1 x(i + 1)
+ x(i) 14 x{circumflex over ( )}7 + x{circumflex over ( )}6 + x(i +
7) = x(i + 6) + x(i + 3) + x{circumflex over ( )}3 + x + 1 x(i + 1)
+ x(i) 15 x{circumflex over ( )}7 + x{circumflex over ( )}5 + x(i +
7) = x(i + 5) + x(i + 4) + x{circumflex over ( )}4 + x{circumflex
over ( )}3 + x(i + 3) + x(i + 2) + x(i + 1)+ x(i) x{circumflex over
( )}2 + x + 1 16 x{circumflex over ( )}7 + x{circumflex over ( )}6
+ x(i + 7) = x(i + 6) + x(i + 5) + x{circumflex over ( )}5 +
x{circumflex over ( )}4 + x(i + 4) + x(i + 3) + x(i + 2)+ x(i)
x{circumflex over ( )}3 + x{circumflex over ( )}2 + 1 17
x{circumflex over ( )}7 + x{circumflex over ( )}6 + x(i + 7) = x(i
+ 6) + x(i + 5) + x{circumflex over ( )}5 + x{circumflex over ( )}3
+ x(i + 3) + x(i + 2) + x(i + 1)+ x(i) x{circumflex over ( )}2 +
x+1 18 x{circumflex over ( )}7 + x{circumflex over ( )}6 + x(i + 7)
= x(i + 6) + x(i + 5) + x{circumflex over ( )}5 + x{circumflex over
( )}4 + x(i + 4) + x(i + 2) + x(i + 1)+ x(i) x{circumflex over (
)}2 + x + 1
[0318] In one example of III-4, the sequence d_SPSS(n) in a symbol
for S-PSS is defined by a BPSK modulated M-sequence with
length-255, and given by: d_SPSS(n)=1-2*x(m),
m=(n+K_1*N_GID{circumflex over ( )}SL)mod 255, 0.ltoreq.n<255
where x(m) is M-sequence with generator polynomial given by one of
the example in Table 4, e.g., g(x) x{circumflex over (
)}8+x{circumflex over ( )}7+x{circumflex over ( )}6+x+1, with
proper initial condition, e.g., x(7:0)=[1 0 0 0 0 0 0 0] or [0 0 0
0 0 0 0 1]; and K_1 is a predefined constant integer, e.g.,
K_1=.left brkt-top.255/N_SPSS.right brkt-bot. if N_SPSS>1 and
K_1=0 if N_SPSS=1. This example applies when the sequence(s)
constructing S-PSS is(are) mapped to all the symbols for S-PSS.
[0319] In one aspect, if the number of sequence for S-PSS in a
symbol is one, the SL synchronization ID group index
N_GID{circumflex over ( )}SL=0.
[0320] In another aspect, if the number of sequences for S-PSS in a
symbol are two, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1.
[0321] In yet another aspect, if the number of sequences for S-PSS
in a symbol are three, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1 or 2.
TABLE-US-00004 TABLE 4 Polynomial and corresponding method
Generator Corresponding generation method Index polynomial g(x) (i
= 0, 1, . . . , 246) 1 x{circumflex over ( )}8 + x{circumflex over
( )}7 + x(i + 8) = x(i + 7) + x(i + 6) + x{circumflex over ( )}6 +
x + 1 x(i + 1) + x(i) 2 x{circumflex over ( )}8 + x{circumflex over
( )}7 + x(i + 8) = x(i + 7) + x(i + 2) + x{circumflex over ( )}2 +
x + 1 x(i + 1) + x(i) 3 x{circumflex over ( )}8 + x{circumflex over
( )}7 + x(i + 8) = x(i + 7) + x(i + 5) + x{circumflex over ( )}5 +
x{circumflex over ( )}3 + 1 x(i + 3) + x(i) 4 x{circumflex over (
)}8 + x{circumflex over ( )}5 + x(i + 8) = x(i + 5) + x(i + 3) +
x{circumflex over ( )}3 + x + 1 x(i + 1) + x(i) 5 x{circumflex over
( )}8 + x{circumflex over ( )}6 x(i + 8) = x(i + 6) + x(i + 5) +
x{circumflex over ( )}5 + x{circumflex over ( )}4 + 1 x(i + 4) +
x(i) 6 x{circumflex over ( )}8 + x{circumflex over ( )}4 + x(i + 8)
= x(i + 4) + x(i + 3) + x{circumflex over ( )}3 + x{circumflex over
( )}2 + 1 x(i + 2) + x(i) 7 x{circumflex over ( )}8 + x{circumflex
over ( )}6 + x(i + 8) = x(i + 6) + x(i + 5) + x{circumflex over (
)}5 + x{circumflex over ( )}3 + 1 x(i + 3) + x(i) 8 x{circumflex
over ( )}8 + x{circumflex over ( )}5 + x(i + 8) = x(i + 5) + x(i +
3) + x{circumflex over ( )}3 + x{circumflex over ( )}2 + 1 x(i + 2)
+ x(i) 9 x{circumflex over ( )}8 + x{circumflex over ( )}6 + x(i +
8) = x(i + 6) + x(i + 5) + x{circumflex over ( )}5 + x{circumflex
over ( )}2 + 1 x(i + 2) + x(i) 10 x{circumflex over ( )}8 +
x{circumflex over ( )}6 + x(i + 8) = x(i + 6) + x(i + 3) +
x{circumflex over ( )}3 + x{circumflex over ( )}2 + 1 (i + 2) +
x(i) 11 x{circumflex over ( )}8 + x{circumflex over ( )}6 + x(i +
8) = x(i + 6) + x(i + 5) + x{circumflex over ( )}5 + x + 1 x(i + 1)
+ x(i) 12 x{circumflex over ( )}8 + x{circumflex over ( )}7 + x(i +
8) = x(i + 7) + x(i + 3) + x{circumflex over ( )}3 + x{circumflex
over ( )}2 + 1 x(i + 2) + x(i) 13 x{circumflex over ( )}8 +
x{circumflex over ( )}7 + x(i + 8) = x(i + 7) + x(i + 6) +
x{circumflex over ( )}6 + x{circumflex over ( )}5 + x(i + 5) + x(i
+ 4) + x(i + 2) + x{circumflex over ( )}4 + x{circumflex over ( )}2
+ 1 x(i) 14 x{circumflex over ( )}8 + x{circumflex over ( )}6 + x(i
+ 8) = x(i + 6) + x(i + 4) + x{circumflex over ( )}4 + x{circumflex
over ( )}3 + x(i + 3) + x(i + 2) + x(i + 1) + x{circumflex over (
)}2 + x + 1 x(i) 15 x{circumflex over ( )}8 + x{circumflex over (
)}7 + x(i + 8) = x(i + 7) + x(i + 6) + x{circumflex over ( )}6 +
x{circumflex over ( )}5 + x(i + 5) + x(i + 2) + x(i + 1) +
x{circumflex over ( )}2 + x + 1 x(i) 16 x{circumflex over ( )}8 +
x{circumflex over ( )}7 + x(i + 8) = x(i + 7) + x(i + 6) +
x{circumflex over ( )}6 + x{circumflex over ( )}3 + x(i + 3) + x(i
+ 2) + x(i + 1) + x{circumflex over ( )}2 + x + 1 x(i)
[0322] In one example of III-5: The sequence d_SPSS(n) in a symbol
for S-PSS is defined by a BPSK modulated M-sequence with
length-127, and given by: d_SPSS(n)=1-2*x(m), m=(n+K_1) mod 127,
0.ltoreq.n<127, where x(m) is M-sequence with generator
polynomial g(x)=x{circumflex over ( )}7+x{circumflex over ( )}4+1,
i.e., x(i+7)=(x(i+4)+x(i)) mod 2 for i=0, 1, . . . , 119, and
initial condition of x(m) is given by x(6:0)=[1 1 1 0 1 1 0], and
K_1 is an integer other than 0, 43, or 86, and may depend on the SL
synchronization ID group index N_GID{circumflex over ( )}SL.
[0323] In one aspect, if the number of sequence for S-PSS in a
symbol is one, the SL synchronization ID group index
N_GID{circumflex over ( )}SL=0. In one consideration, K_1 can be
chosen to minimize the PAPR value of the S-PSS sequence, e.g.,
K_1=63 (e.g., according to FIG. 18). In another consideration, K_1
can be chosen as with maximum distance from cyclic shifts used for
NR-PSS (e.g., 0, 43, and 86), e.g., K_1=21, or K_1=22, or K_1=64,
or K_1=65.
[0324] In another aspect, if the number of sequences for S-PSS in a
symbol are two, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1. In one consideration, K_1
can be chosen to minimize the PAPR values of the S-PSS sequences,
e.g., K_1=20 for N_GID{circumflex over ( )}SL=0, and K_1=63 for
N_GID{circumflex over ( )}SL=1 (e.g., according to FIG. 18). In
another consideration, K_1 can be chosen as with maximum distance
from cyclic shifts used for NR-PSS (e.g., 0, 43, and 86), e.g.,
K_1=21 for N_GID{circumflex over ( )}SL=0, and K_1=65 for
N_GID{circumflex over ( )}SL=1, or K_1=22 for N_GID{circumflex over
( )}SL=0, and K_1=64 for N_GID{circumflex over ( )}SL=1.
[0325] In yet another aspect, if the number of sequences for S-PSS
in a symbol are three, the SL synchronization ID group index
N_GID{circumflex over ( )}SL is 0 or 1 or 2. In one consideration,
K_1 can be chosen to minimize the PAPR values of the S-PSS
sequences, e.g., K_1=20 for N_GID{circumflex over ( )}SL=0, K_1=63
for N_GID{circumflex over ( )}SL=1, and K_1=100 for
N_GID{circumflex over ( )}SL=2, (e.g., according to FIG. 18). In
another consideration, K_1 can be chosen as with maximum distance
from cyclic shifts used for NR-PSS (e.g., 0, 43, and 86), e.g.,
K_1=21 for N_GID{circumflex over ( )}SL=0, K_1=65 for
N_GID{circumflex over ( )}SL=1, and K_1=108 for N_GID{circumflex
over ( )}SL=2, or K_1=22 for N_GID{circumflex over ( )}SL=0, K_1=64
for N_GID{circumflex over ( )}SL=1, and K_1=107 for
N_GID{circumflex over ( )}SL=2.
[0326] In one embodiment, the design of S-SSS sequence can be
combined with examples in the other embodiments of this
disclosure.
[0327] In one approach, the number of sequences constructing S-SSS
within each symbol is the same as the number of sidelink
synchronization IDs (e.g., every sidelink synchronization ID is
mapped to a unique sequence for S-SSS within each symbol mapped for
S-SSS).
[0328] In a first example of this approach, when there is a single
symbol mapped for S-SSS within a S-SSB, the set of sequences
constructing S-SSS is a subset of sequences constructing NR-SSS, if
the number of sequences for S-SSS is smaller or equal to 1008.
[0329] In a second example of this approach, when there is a single
symbol mapped for S-SSS within a S-SSB, the set of sequences
constructing S-SSS is different from the set of sequences
constructing NR-SSS, e.g., by using at least one different
M-sequence generator polynomial and/or cyclic shifts.
[0330] In a third example of this approach, when there are multiple
symbols mapped for S-SSS within a S-SSB, the sequences constructing
the S-SSS in different symbols can be the same, and mapped in
different pattern to the symbols for S-SSS. For example, the
sequence constructing S-SSS is mapped in low-to-high order in the
frequency domain in one of the symbols for S-SSS, and mapped in
high-to-low order in the frequency domain in the other symbol for
S-SSS.
[0331] In a fourth example of this approach, when there are
multiple symbols mapped for S-SSS within a S-SSB, the sequences
constructing the S-SSS in different symbols can be the same, and
mapped to the symbols for S-SSS in the same pattern (e.g., the
symbols for S-SSS (not including CP) are repeated.
[0332] In a fifth example of this approach, when there are multiple
symbols mapped for S-SSS within a S-SSB, the sequences constructing
the S-SSS in one symbol can be different from the sequences
constructing the S-SSS in another symbol, and mapped to the symbols
for S-SSS in the same pattern (e.g., time-frequency domain mapping
order), where the sequences in each symbol can be using the
sequences in the first or second example of this approach. For
instance, one way to achieve different set of sequences in
different symbols is using cover code (i.e., the sequences
constructing the S-SSS in one symbol can be the sequences
constructing the S-SSS in another symbol with a cover code), and
another way to achieve different set of sequences in different
symbols is using different generator polynomials and/or different
cyclic shifts.
[0333] In a sixth example of this approach, when there are multiple
symbols mapped for S-SSS within a S-SSB, the sequences constructing
the S-SSS in one symbol can be different from the sequences
constructing the S-SSS in another symbol, and mapped in different
pattern to the symbols for S-SSS, where the sequences in each
symbol can be using the sequences in the first or second example of
this approach. For example, the sequence constructing S-SSS is
mapped in low-to-high order in the frequency domain in some of the
symbols for S-SSS, and mapped in high-to-low order in the frequency
domain in the other symbols for S-SSS. For instance, one way to
achieve different set of sequences in different symbols is using
cover code (i.e., the sequences constructing the S-SSS in one
symbol can be the sequences constructing the S-SSS in another
symbol with a cover code), and another way to achieve different set
of sequences in different symbols is using different generator
polynomials and/or different cyclic shifts.
[0334] In a seventh example of this approach, when there are
multiple symbols mapped for S-SSS within a S-SSB, each of the
sequences for S-SSS can be generated for and mapped to all the
symbols for S-SSS.
[0335] Some examples of sequences constructing S-SSS are
illustrated in details as follows, wherein the sequence design
reflects the above approaches in this embodiment. There can be
multiple examples utilized simultaneously (e.g., one example mapped
for one symbol for S-SSS, and another example mapped for another
symbol for S-SSS).
[0336] In one example of IV-1, the construction method is same as
NR-SSS, such that the set of S-SSS is a subset of the same as the
set of NR-SSS. For example, the sequence d_SSSS(n) in a symbol for
S-SSS is defined by a BPSK modulated Gold-sequence with length-127,
and given by: d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_(n_1)), n_0=(n+m_0)
mod 127, n_1=(n+m_1) mod 127, m_0=15*.left
brkt-bot.N_IDinG{circumflex over ( )}SL/112.right
brkt-bot.+5*N_GID{circumflex over ( )}SL, m_1=N_IDinG{circumflex
over ( )}SL mod 112, 0.ltoreq.n<127 where x_0(n_0) is M-sequence
with generator polynomial g_0(x)=x{circumflex over (
)}7+x{circumflex over ( )}4+1, i.e., x_0(i+7)=(x_0(i+4)+x_0(i)) mod
2 for i=0, 1, . . . , 119, and initial condition of x_0(n_0) is
given by x_0(6:0)=[0 0 0 0 0 0 1]; and x_1(n_1) is M-sequence with
generator polynomial g_1(x)=x{circumflex over ( )}7+x+1, i.e.,
x_1(i+7)=(x_1(i)+x_1(i)) mod 2 for i=0, 1, . . . , 119, and initial
condition of x_1(n_1) is given by x_1(6:0)=[0 0 0 0 0 0 1]; and
N_IDinG{circumflex over ( )}SL is the SL synchronization ID index
within a group, and N_ID{circumflex over (
)}SL=N_SPSS*N_IDinG{circumflex over ( )}SL+N_GID{circumflex over (
)}SL. For one consideration, this example applies when the
sequences constructing S-SSS in one of the symbols for S-SSS is a
subset of sequences constructing NR-SSS.
[0337] For one instance, when N_SPSS=1, N_GID{circumflex over (
)}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL.
[0338] For another instance, when N_SPSS=2, N_GID{circumflex over (
)}SL=0 or 1.
[0339] In one example of IV-2, the sequence d_SSSS(n) in a symbol
for S-SSS is defined by a BPSK modulated Gold-sequence with
length-127, and given by: d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_(n_1)),
n_0=(n+m_0) mod 127, n_1=(n+m_1) mod 127, m_0=K_2*.left
brkt-bot.N_IDinG{circumflex over ( )}SL/K_3.right
brkt-bot.+K_4*N_GID{circumflex over ( )}SL, m_1=N_IDinG{circumflex
over ( )}SL mod K_3, 0.ltoreq.n<127 where x_0(n_0) is M-sequence
with generator polynomial g_0(x)=x{circumflex over (
)}7+x{circumflex over ( )}4+1, i.e., x_0(i+7)=(x_0(i+4)+x_0(i)) mod
2 for i=0, 1, . . . , 119, and initial condition of x_0(n_0) is
given by x_0(6:0)=[0 0 0 0 0 0 1]; and x_1(n_1) is M-sequence with
generator polynomial g_1(x)=x{circumflex over ( )}7+x+1, i.e.,
x_1(i+7)=(x_1(i)+x_1(i)) mod 2 for i=0, 1, . . . , 119, and initial
condition of x_1(n_1) is given by x_1(6:0)=[0 0 0 0 0 0 1]; and
N_IDinG{circumflex over ( )}SL is the SL synchronization ID index
within a group, and N_ID{circumflex over (
)}SL=N_SPSS*N_IDinG{circumflex over ( )}SL+N_GID{circumflex over (
)}SL; and K_2, K_3, and K_4 are predefined integers.
[0340] For one instance, when N_SPSS=1, N_GID{circumflex over (
)}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, if
N_NID{circumflex over ( )}SL is 336.
[0341] For another instance, when N_SPSS=1, N_GID{circumflex over (
)}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=45, K_3=112, K_4=0, if
N_NID{circumflex over ( )}SL is 336.
[0342] For yet another instance, when N_SPSS=1, N_GID{circumflex
over ( )}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, if
N_NID{circumflex over ( )}SL is 504.
[0343] For yet another instance, when N_SPSS=1, N_GID{circumflex
over ( )}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=45, K_3=112, K_4=0, if
N_NID{circumflex over ( )}SL is 504.
[0344] For yet another instance, when N_SPSS=1, N_GID{circumflex
over ( )}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, if
N_NID{circumflex over ( )}SL is 672.
[0345] For yet another instance, when N_SPSS=1, N_GID{circumflex
over ( )}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=126, K_4=0, if
N_NID{circumflex over ( )}SL is 1008.
[0346] For yet another particular instance, when N_SPSS=1,
N_GID{circumflex over ( )}SL=0, N_IDinG{circumflex over ( )}SL is
the same as N_ID{circumflex over ( )}SL, and K_2=15, K_3=112,
K_4=0, if N_NID{circumflex over ( )}SL is 1008.
[0347] For yet another instance, when N_SPSS=2, N_GID{circumflex
over ( )}SL=0 or 1, and K_2=15, K_3=112, K_4=5, if N_NID{circumflex
over ( )}SL is 672.
[0348] For yet another instance, when N_SPSS=2, N_GID{circumflex
over ( )}SL=0 or 1, and K_2=15, K_3=84, K_4=5, if N_NID{circumflex
over ( )}SL is 336.
[0349] For yet another instance, when N_SPSS=2, N_GID{circumflex
over ( )}SL=0 or 1, and K_2=15, K_3=56, K_4=5, if N_NID{circumflex
over ( )}SL is 336.
[0350] For yet another instance, when N_SPSS=3, N_GID{circumflex
over ( )}SL=0 or 1 or 2, and K_2=15, K_3=112, K_4=5, if
N_NID{circumflex over ( )}SL is 672.
[0351] For yet another instance, when N_SPSS=3, N_GID{circumflex
over ( )}SL=0 or 1 or 2, and K_2=15, K_3=75, K_4=5, if
N_NID{circumflex over ( )}SL is 672.
[0352] For yet another instance, when N_SPSS=3, N_GID{circumflex
over ( )}SL=0 or 1 or 2, and K_2=15, K_3=112, K_4=5, if
N_NID{circumflex over ( )}SL is 336.
[0353] In one example of IV-3, the sequence d_SSSS(n) in a symbol
for S-SSS is defined by a BPSK modulated Gold-sequence with
length-127, and given by: d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_(n_1)),
n_0=(n+m_0) mod 127, n_1=(n+m_1) mod 127, m_0=K_2*.left
brkt-bot.N_IDinG{circumflex over ( )}SL/K_3.right
brkt-bot.+K_4*N_GID{circumflex over ( )}SL, m_1=N_IDinG{circumflex
over ( )}SL mod K_3, 0.ltoreq.n<127 where x_0(n_0) and x_1(n_1)
are two length-127 M-sequences, and each is with generator
polynomial chosen from Table 3 (e.g., one is with generator
polynomial g_0(x)=x{circumflex over ( )}7+x{circumflex over ( )}6+1
and the other is with generator polynomial g_1(x)=x{circumflex over
( )}7+x{circumflex over ( )}3+1) and proper initial condition,
e.g., x_0(6:0)=x_1(6:0)=[0 0 0 0 0 0 1]; and N_IDinG{circumflex
over ( )}SL is the SL synchronization ID index within a group, and
N_ID{circumflex over ( )}SL=N_SPSS*N_IDinG{circumflex over (
)}SL+N_GID{circumflex over ( )}SL; and K_2, K_3, and K_4 are
predefined integers.
[0354] For one instance, when N_SPSS=1, N_GID{circumflex over (
)}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, if
N_NID{circumflex over ( )}SL is 336, or 504, or 672.
[0355] For another instance, when N_SPSS=2, N_GID{circumflex over (
)}SL=0 or 1, and K_2=15, K_3=112, K_4=5, if N_NID{circumflex over (
)}SL is 672.
[0356] For yet another instance, when N_SPSS=2, N_GID{circumflex
over ( )}SL=0 or 1, and K_2=15, K_3=84, K_4=5, if N_NID{circumflex
over ( )}SL is 336.
[0357] For yet another instance, when N_SPSS=2, N_GID{circumflex
over ( )}SL=0 or 1, and K_2=15, K_3=56, K_4=5, if N_NID{circumflex
over ( )}SL is 336.
[0358] For yet another particular instance, when N_SPSS=3,
N_GID{circumflex over ( )}SL=0 or 1 or 2, and K_2=15, K_3=112,
K_4=5, if N_NID{circumflex over ( )}SL is 672.
[0359] For yet another instance, when N_SPSS=3, N_GID{circumflex
over ( )}SL=0 or 1 or 2, and K_2=15, K_3=75, K_4=5, if
N_NID{circumflex over ( )}SL is 672.
[0360] For yet another instance, when N_SPSS=3, N_GID{circumflex
over ( )}SL=0 or 1 or 2, and K_2=15, K_3=112, K_4=5, if
N_NID{circumflex over ( )}SL is 336.
[0361] In one example of IV-4, the sequence d_SSSS(n) in a symbol
for S-SSS is defined by a BPSK modulated Gold-sequence with
length-255, and given by: d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_(n_1)),
n_0=(n+m_0) mod 255, n_1=(n+m_1) mod 255, m_0=K_2*.left
brkt-bot.N_IDinG{circumflex over ( )}SL/K_3.right
brkt-bot.+K_4*N_GID{circumflex over ( )}SL, m_1=N_IDinG{circumflex
over ( )}SL mod K_3, 0.ltoreq.n<255 where x_0(n_0) and x_1(n_1)
are two length-255 M-sequences, and each is with generator
polynomial chosen from Table 4 (e.g., one is with generator
polynomial g_0(x)=x{circumflex over ( )}8+x{circumflex over (
)}7+x{circumflex over ( )}6+x+1 and the other is with generator
polynomial g_1(x)=x{circumflex over ( )}8+x{circumflex over (
)}7+x{circumflex over ( )}2+x+1) and proper initial condition,
e.g., x_0(7:0)=x_1(7:0)=[0 0 0 0 0 0 0 1] or [1 0 0 0 0 0 0 0]; and
N_IDinG{circumflex over ( )}SL is the SL synchronization ID index
within a group, and N_ID{circumflex over (
)}SL=N_SPSS*N_IDinG{circumflex over ( )}SL+N_GID{circumflex over (
)}SL; and K_2, K_3, and K_4 are predefined integers. For one
consideration, this example can apply when the sequences
constructing S-SSS are mapped to all the symbols for S-SSS.
[0362] For one instance, when N_SPSS=1, N_GID{circumflex over (
)}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=30, K_3=224, K_4=0, if
N_NID{circumflex over ( )}SL is 336, or 504, or 672.
[0363] For another instance, when N_SPSS=2, N_GID{circumflex over (
)}SL=0 or 1, and K_2=30, K_3=224, K_4=10, if N_NID{circumflex over
( )}SL is 672.
[0364] For yet another instance, when N_SPSS=2, N_GID{circumflex
over ( )}SL=0 or 1, and K_2=30, K_3=168, K_4=10, if
N_NID{circumflex over ( )}SL is 336.
[0365] For yet another instance, when N_SPSS=3, N_GID{circumflex
over ( )}SL=0 or 1 or 2, and K_2=30, K_3=224, K_4=10, if
N_NID{circumflex over ( )}SL is 672.
[0366] For yet another instance, when N_SPSS=3, N_GID{circumflex
over ( )}SL=0 or 1 or 2, and K_2=30, K_3=112, K_4=10, if
N_NID{circumflex over ( )}SL is 336.
[0367] In one example of IV-5, the sequence d_SSSS(n) in a symbol
for S-SSS is defined by a BPSK modulated Gold-sequence with
length-127, and given by: d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_1(n_1)),
n_0=(n+m_0) mod 127, n_1=(n+m_1) mod 127, m_0=K_2*.left
brkt-bot.N_IDinG{circumflex over ( )}SL/K_3.right
brkt-bot.+K_4*N_GID{circumflex over ( )}SL, m_1=N_IDinG{circumflex
over ( )}SL mod K_3, 0.ltoreq.n<127 where x_0(n_0) is M-sequence
with generator polynomial g_0(x)=x{circumflex over (
)}7+x{circumflex over ( )}4+1, i.e., x_0(i+7)=(x_0(i+4)+x_0(i)) mod
2 for i=0, 1, . . . , 119, and initial condition of x_0(n_0) is
given by x_0(6:0)=[0 0 0 0 0 0 1]; and x_1(n_1) is M-sequence with
generator polynomial g_1(x)=x{circumflex over ( )}7+x+1, i.e.,
x_1(i+7)=(x_1(i)+x_1(i)) mod 2 for i=0, 1, . . . , 119, and initial
condition of x_1(n_1) is given by x_1(6:0)=[0 0 0 0 0 0 1]; and
N_IDinG{circumflex over ( )}SL is the SL synchronization ID index
within a group, and N_ID{circumflex over (
)}SL=(N_SPSS*N_IDinG{circumflex over ( )}SL+N_GID{circumflex over (
)}SL)/K_5; and K_2, K_3, K_4, and K_5 are predefined integers.
[0368] For one instance, when N_SPSS=1, N_GID{circumflex over (
)}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, K_5=3, if
N_NID{circumflex over ( )}SL is 336.
[0369] For another instance, when N_SPSS=3, N_GID{circumflex over (
)}SL=0 or 1 or 2, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, K_5=3, if
N_NID{circumflex over ( )}SL is 336.
[0370] For yet another instance, when N_SPSS=1, N_GID{circumflex
over ( )}SL=0, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, K_5=2, if
N_NID{circumflex over ( )}SL is 504.
[0371] For yet another instance, when N_SPSS=2, N_GID{circumflex
over ( )}SL=0 or 1, N_IDinG{circumflex over ( )}SL is the same as
N_ID{circumflex over ( )}SL, and K_2=15, K_3=112, K_4=0, K_5=2, if
N_NID{circumflex over ( )}SL is 504.
[0372] In one example of IV-6, the construction method is same as
NR-SSS, such that the set of S-SSS is a subset of the same as the
set of NR-SSS. For example, the sequence d_SSSS(n) in a symbol for
S-SSS is defined by a BPSK modulated Gold-sequence with length-127,
and given by: d_SSSS(n)=(1-2*x_0(n_0))*(1-2*x_(n_1)), n_0=(n+m_0)
mod 127, n_1=(n+m_1) mod 127, m_0=15*.left
brkt-bot.N_IDinG{circumflex over ( )}SL/112.right
brkt-bot.+5*N_GID{circumflex over ( )}SL+K_1,
m_1=N_IDinG{circumflex over ( )}SL mod 112, 0.ltoreq.n<127 where
x_0(n_0) is M-sequence with generator polynomial
g_0(x)=x{circumflex over ( )}7+x{circumflex over ( )}4+1, i.e.,
x_0(i+7)=(x_0(i+4)+x_0(i)) mod 2 for i=0, 1, . . . , 119, and
initial condition of x_0(n_0) is given by x_0(6:0)=[0 0 0 0 0 0 1];
and x_1(n_1) is M-sequence with generator polynomial
g_1(x)=x{circumflex over ( )}7+x+1, i.e., x_1(i+7)=(x_1(i)+x_1(i))
mod 2 for i=0, 1, . . . , 119, and initial condition of x_1(n_1) is
given by x_1(6:0)=[0 0 0 0 0 0 1]; and N_IDinG{circumflex over (
)}SL is the SL synchronization ID index within a group, SL
synchronization ID can be expressed as N_ID{circumflex over (
)}SL=N_G*N_IDinG{circumflex over ( )}SL+N_GID{circumflex over (
)}SL, wherein N_G is the number of groups, and N_GID{circumflex
over ( )}SL is the group ID; and K_1 is a predefined integer.
[0373] For one aspect, there is a single S-PSS sequence (e.g.,
N_SPSS=1) and there is a single group of SL synchronization IDs
(e.g., N_G=1). For this aspect, the number of SL synchronization ID
could be 336, and N_GID{circumflex over ( )}SL=0, and
N_IDinG{circumflex over ( )}SL is the same as N_ID{circumflex over
( )}SL. In one instance of this aspect, K_1=0, and the set of S-SSS
sequences is a subset of NR-SSS sequence. In another instance of
this aspect, the set of S-SSS sequences is a subset of NR-SSS
sequence with a cyclic shift, and K_1>0 (e.g., K_1=2 or
K_1=3).
[0374] For another aspect, there is a single S-PSS sequence (e.g.,
N_SPSS=1) and there are two groups of SL synchronization IDs (e.g.,
N_G=2), such as the NR-SL_PSS sequence does not carry the group ID.
For this aspect, the number of SL synchronization ID could be 672,
and N_GID{circumflex over ( )}SL=0 or 1. In one instance of this
aspect, K_1=0, and the set of S-SSS sequences is a subset of NR-SSS
sequence. In another instance of this aspect, the set of S-SSS
sequences is a subset of NR-SSS sequence with a cyclic shift, and
K_1>0 (e.g., K_1=2 or K_1=3).
[0375] For yet another aspect, there are two S-PSS sequences (e.g.,
N_SPSS=2) and there are two groups of SL synchronization IDs (e.g.,
N_G=2), such as each S-PSS sequence represents one of the groups of
SL synchronization IDs. For this aspect, the number of SL
synchronization ID could be 672, and N_GID{circumflex over ( )}SL=0
or 1. In one instance of this aspect, K_1=0, and the set of S-SSS
sequences is a subset of NR-SSS sequence. In another instance of
this aspect, the set of S-SSS sequences is a subset of NR-SSS
sequence with a cyclic shift, and K_1>0 (e.g., K_1=7 or
K_1=8).
[0376] In one embodiment for the components of PSBCH content, one
or more approaches can be supported at the same time to construct
the PSBCH content. For example, some approach or example of
approach can be supported for a carrier frequency range only.
[0377] In a first approach, PSBCH content can contain time-domain
information on indicating where the PSBCH of the corresponding
S-SSB is located, wherein the time-domain information can contain
at least one of DFN-level information (e.g., DFN or part of DFN),
half-frame-level information (e.g., half frame indicator),
slot-level information (e.g., slot index within a fame or half
frame or predefined time duration), or S-SSB index (e.g., for
L_SSB>1 and more than one S-SSB within a slot). Upon detecting
the system information contained in PSBCH content, the UE can
determine the symbol index within a slot using a predefined S-SSB
mapping in a slot, wherein the S-SSB index can be also utilized to
determine the symbol index within a slot if one slot contains two
S-SSBs, and the UE can also determine the slot index within a frame
and DFN using the system information contained in PSBCH
content.
[0378] FIG. 21 illustrates an example time-domain mapping of an
S-SSB burst set 2100 according to embodiments of the present
disclosure. The embodiment of the time-domain mapping of an S-SSB
burst set 2100 illustrated in FIG. 21 is for illustration only.
FIG. 21 does not limit the scope of this disclosure to any
particular implementation.
[0379] In a first example of the first approach, one S-SSB burst
set only contains single S-SSB (i.e., L_SSB=1), such as S-SSB is
operated in a single-beam manner, and the location of the slot
containing the S-SSB is fixed in the spec, such as fixed as a
particular slot (such as the first slot) within the periodicity of
S-SSB burst set (e.g., 2101 in FIG. 21) or as a particular slot
(such as the first slot) within a DFN or as a particular slot (such
as the first slot) within a half frame.
[0380] In one sub-example, if the periodicity of S-SSB burst set is
2{circumflex over ( )}n frame, where n.gtoreq.0, and the location
of the slot containing the S-SSB is fixed as a particular slot
(such as the first slot) within the periodicity of S-SSB burst set,
then the (10-n) MSBs of DFN (e.g., a (10-n)-bit field) wherein the
PSBCH of the corresponding S-SSB is located can be indicated in
PSBCH content.
[0381] In another sub-example, if the periodicity of S-SSB burst
set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and the
location of the slot containing the S-SSB is fixed as a particular
slot (such as the first slot) within a DFN, then the DFN (e.g., a
10-bit field taking value from 0 to 1023) wherein the PSBCH of the
corresponding S-SSB is located can be indicated in PSBCH
content.
[0382] In yet another sub-example, if the location of the slot
containing the S-SSB is fixed as a particular slot (such as the
first slot) within a half frame, then the DFN (e.g., a 10-bit field
taking value from 0 to 1023) and half frame number (e.g., a 1-bit
field indicating the first or second half frame within a frame)
wherein the PSBCH of the corresponding S-SSB is located can be
indicated in PSBCH content.
[0383] In a second example of the first approach, one S-SSB burst
set only contains single S-SSB (i.e., L_SSB=1), such as S-SSB is
operated in a single-beam manner, and the location of the slot
containing the S-SSB is variable and indicated (e.g., 2102 in FIG.
21).
[0384] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the PSBCH of the corresponding S-SSB is located can be
indicated in PSBCH content, wherein the slot index within the DFN
can be expressed in a (k+4)-bit field taking value from 0 to M-1,
where M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k
is the largest SCS supported for NR sidelink (such as k=4) or for a
carrier frequency range of NR sidelink (such as k=4 for above 6 GHz
and k=2 for below 6 GHz).
[0385] FIG. 22 illustrates another example time-domain mapping of
an S-SSB burst set 2200 according to embodiments of the present
disclosure. The embodiment of the time-domain mapping of an S-SSB
burst set 2200 illustrated in FIG. 22 is for illustration only.
FIG. 22 does not limit the scope of this disclosure to any
particular implementation.
[0386] In a third example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB could
be operated in a multi-beam manner and/or repetitive manner, and
the slots containing the S-SSBs are contiguous, and the locations
of the slots containing the S-SSBs are fixed in the spec, such as
fixed as starting from a particular slot (e.g., the first slot)
within the periodicity of S-SSB burst set (e.g., 2201 in FIG. 22)
or as starting from a particular slot (e.g., the first slot) within
a DFN or as starting from a particular slot (e.g., the first slot)
within a half frame.
[0387] In one sub-example, if the periodicity of S-SSB burst set is
2{circumflex over ( )}n frame, where n.gtoreq.0, and the location
of the slot containing the S-SSB is fixed as starting from a
particular slot (such as the first slot) within the periodicity of
S-SSB burst set, then the (10-n) MSBs of DFN (e.g., a (10-n)-bit
field) wherein the PSBCH of the corresponding S-SSB is located, as
well as the S-SSB index (or MSBs of the S-SSB index), can be
indicated in PSBCH content.
[0388] In another sub-example, if the periodicity of S-SSB burst
set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and the
location of the slot containing the S-SSB is fixed as starting from
a particular slot (such as the first slot) within the periodicity
of S-SSB burst set, then the (10-n) MSBs of DFN (e.g., a (10-n)-bit
field) wherein the PSBCH of the corresponding S-SSB is located can
be indicated in PSBCH content, and the S-SSB index is indicated
using other signal/channel from PSBCH such as DMRS of PSBCH.
[0389] In yet another sub-example, if the periodicity of S-SSB
burst set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and
the location of the slot containing the S-SSB is fixed as starting
from a particular slot (such as the first slot) within a DFN, then
the DFN (e.g., a 10-bit field taking value from 0 to 1023) wherein
the PSBCH of the corresponding S-SSB is located, as well as the
S-SSB index, can be indicated in PSBCH content.
[0390] In yet another sub-example, if the periodicity of S-SSB
burst set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and
the location of the slot containing the S-SSB is fixed as starting
from a particular slot (such as the first slot) within a DFN, then
the DFN (e.g., a 10-bit field taking value from 0 to 1023) wherein
the PSBCH of the corresponding S-SSB is located can be indicated in
PSBCH content, and the S-SSB index is indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0391] In yet another sub-example, if the location of the slot
containing the S-SSB is fixed as starting from a particular slot
(such as the first slot) within a half frame, then the DFN (e.g., a
10-bit field taking value from 0 to 1023) and half frame number
(e.g., a 1-bit field indicating the first or second half frame
within a frame) wherein the PSBCH of the corresponding S-SSB is
located, as well as the S-SSB index (or MSBs of the S-SSB index),
can be indicated in PSBCH content.
[0392] In yet another sub-example, if the location of the slot
containing the S-SSB is fixed as starting from a particular slot
(such as the first slot) within a half frame, then the DFN (e.g., a
10-bit field taking value from 0 to 1023) and half frame number
(e.g., a 1-bit field indicating the first or second half frame
within a frame) wherein the PSBCH of the corresponding S-SSB is
located can be indicated in PSBCH content, and the S-SSB index is
indicated using other signal/channel from PSBCH such as DMRS of
PSBCH.
[0393] In a fourth example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs are contiguous, and the starting
location of the slots containing the S-SSBs is variable and
indicated (e.g., 2202 in FIG. 22).
[0394] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the first slot containing S-SSB is located, as well as the
S-SSB index (or MSBs of the S-SSB index), can be indicated in PSBCH
content, wherein the slot index within the DFN can be expressed in
a (k+4)-bit field taking value from 0 to M-1, where
M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k is the
largest SCS supported for NR sidelink (such as k=4) or a carrier
frequency range of NR sidelink (such as k=4 for above 6 GHz and k=1
for below 6 GHz).
[0395] In another sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the first slot containing S-SSB is located can be indicated
in PSBCH content, wherein the slot index within the DFN can be
expressed in a (k+4)-bit field taking value from 0 to M-1, where
M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k is the
largest SCS supported for NR sidelink (such as k=4) or a carrier
frequency range of NR sidelink (such as k=4 for above 6 GHz and k=1
for below 6 GHz), and the S-SSB index is indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0396] FIG. 23 illustrates another example time-domain mapping of
an S-SSB burst set 2300 according to embodiments of the present
disclosure. The embodiment of the time-domain mapping of an S-SSB
burst set 2300 illustrated in FIG. 23 is for illustration only.
FIG. 23 does not limit the scope of this disclosure to any
particular implementation.
[0397] In a fifth example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs can be non-contiguous, and slots
containing the S-SSB are uniformly distributed with fixed interval
within the periodicity of the S-SSB burst set, and the first slot
containing the S-SSB is fixed in the spec, such as fixed as
starting from a particular slot (such as the first slot) within the
periodicity of S-SSB burst set (e.g., 2301 in FIG. 23) or as
starting from a particular slot (such as the first slot) within a
DFN or as starting from a particular slot (such as the first slot)
within a half frame. For instance, the indexes of slots containing
the S-SSB within the periodicity of S-SSB burst set (or the DFN, or
the half frame) can be given by #0, #(N/L_SSB), #2*(N/L_SSB), . . .
, #(L_SSB-1)*(N/L_SSB) if each slot contains single S-SSB, and
given by #0, #2*(N/L_SSB), #2*2*(N/L_SSB), . . . ,
#2*(L_SSB/2-1)*(N/L_SSB) if each slot contains two S-SSBs, wherein
L_SSB is the maximum number of S-SSBs in a burst set determined per
carrier frequency range, and N is the periodicity of S-SSB burst
set (or the DFN, or the half frame) in terms of slots.
[0398] In one sub-example, if the periodicity of S-SSB burst set is
2{circumflex over ( )}n frame, where n.gtoreq.0, and the location
of the slot containing the S-SSB is fixed as starting from a
particular slot (such as the first slot) within the periodicity of
S-SSB burst set, then the (10-n) MSBs of DFN (e.g., a (10-n)-bit
field) wherein the PSBCH of the corresponding S-SSB is located, as
well as the S-SSB index (or MSBs of the S-SSB index), can be
indicated in PSBCH content.
[0399] In another sub-example, if the periodicity of S-SSB burst
set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and the
location of the slot containing the S-SSB is fixed as starting from
a particular slot (such as the first slot) within the periodicity
of S-SSB burst set, then the (10-n) MSBs of DFN (e.g., a (10-n)-bit
field) wherein the PSBCH of the corresponding S-SSB is located can
be indicated in PSBCH content, and the S-SSB index is indicated
using other signal/channel from PSBCH such as DMRS of PSBCH.
[0400] In yet another sub-example, if the periodicity of S-SSB
burst set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and
the location of the slot containing the S-SSB is fixed as starting
from a particular slot (such as the first slot) within a DFN, then
the DFN (e.g., a 10-bit field taking value from 0 to 1023) wherein
the PSBCH of the corresponding S-SSB is located, as well as the
S-SSB index, can be indicated in PSBCH content.
[0401] In yet another sub-example, if the periodicity of S-SSB
burst set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and
the location of the slot containing the S-SSB is fixed as starting
from a particular slot (such as the first slot) within a DFN, then
the DFN (e.g., a 10-bit field taking value from 0 to 1023) wherein
the PSBCH of the corresponding S-SSB is located can be indicated in
PSBCH content, and the S-SSB index is indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0402] In yet another sub-example, if the location of the slot
containing the S-SSB is fixed as starting from a particular slot
(such as the first slot) within a half frame, then the DFN (e.g., a
10-bit field taking value from 0 to 1023) and half frame number
(e.g., a 1-bit field indicating the first or second half frame
within a frame) wherein the PSBCH of the corresponding S-SSB is
located, as well as the S-SSB index (or MSBs of the S-SSB index),
can be indicated in PSBCH content.
[0403] In yet another sub-example, if the location of the slot
containing the S-SSB is fixed as starting from a particular slot
(such as the first slot) within a half frame, then the DFN (e.g., a
10-bit field taking value from 0 to 1023) and half frame number
(e.g., a 1-bit field indicating the first or second half frame
within a frame) wherein the PSBCH of the corresponding S-SSB is
located can be indicated in PSBCH content, and the S-SSB index is
indicated using other signal/channel from PSBCH such as DMRS of
PSBCH.
[0404] In a sixth example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs can be non-contiguous, and slots
containing the S-SSB are uniformly distributed with fixed interval
within the periodicity of the S-SSB burst set, and the first slot
containing the S-SSB is variable and indicated (e.g., 2302 in FIG.
23).
[0405] For instance, the indexes of slots containing the S-SSB
within the periodicity of S-SSB burst set (or the DFN, or the half
frame) can be given by #M, #M+(N/L_SSB), #M+2*(N/L_SSB), . . . ,
#M+(L_SSB-1)*(N/L_SSB) if each slot contains single S-SSB, and
given by #M, #M+2*(N/L_SSB), #M+2*2*(N/L_SSB), . . . ,
#M+2*(L_SSB/2-1)*(N/L_SSB) if each slot contains two S-SSBs,
wherein L_SSB is the maximum number of S-SSBs in a burst set
determined per carrier frequency range, and N is the periodicity of
S-SSB burst set (or the DFN, or the half frame) in terms of slots,
and M is the index of the first slot containing the S-SSB which is
indicated.
[0406] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the first slot containing S-SSB is located, as well as the
S-SSB index (or MSBs of the S-SSB index), can be indicated in PSBCH
content, wherein the slot index within the DFN can be expressed in
a (k+4)-bit field taking value from 0 to M-1, where
M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k is the
largest SCS supported for NR sidelink (such as k=4) or a carrier
frequency range of NR sidelink (such as k=4 for above 6 GHz and k=1
for below 6 GHz).
[0407] In another sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the first slot containing S-SSB is located can be indicated
in PSBCH content, wherein the slot index within the DFN can be
expressed in a (k+4)-bit field taking value from 0 to M-1, where
M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k is the
largest SCS supported for NR sidelink (such as k=4) or a carrier
frequency range of NR sidelink (such as k=4 for above 6 GHz and k=1
for below 6 GHz), and the S-SSB index is indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0408] In a seventh example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs can be non-contiguous, and slots
containing the S-SSB are uniformly distributed with fixed interval
within a subset of the periodicity of the S-SSB burst set, and the
first slot containing the S-SSB is fixed in the spec, such as fixed
as starting from a particular slot (such as the first slot) within
the periodicity of S-SSB burst set (e.g., 2303 in FIG. 23) or as
starting from a particular slot (such as the first slot) within a
DFN or as starting from a particular slot (such as the first slot)
within a half frame.
[0409] For instance, the indexes of slots containing the S-SSB
within the periodicity of S-SSB burst set (or the DFN, or the half
frame) can be given by #0, #(N/L), #2*(N/L), #(L_SSB-1)*(N/L) if
each slot contains single S-SSB, and given by #0, #2*(N/L),
#2*2*(N/L), . . . , #2*(L_SSB/2-1)*(N/L) if each slot contains two
S-SSBs, wherein L_SSB is the maximum number of S-SSBs in a burst
set determined per carrier frequency range, and N is the
periodicity of S-SSB burst set (or the DFN, or the half frame) in
terms of slots, and L is a predefined integer with L>L_SSB.
[0410] In one sub-example, if the periodicity of S-SSB burst set is
2{circumflex over ( )}n frame, where n.gtoreq.0, and the location
of the slot containing the S-SSB is fixed as starting from a
particular slot (such as the first slot) within the periodicity of
S-SSB burst set, then the (10-n) MSBs of DFN (e.g., a (10-n)-bit
field) wherein the PSBCH of the corresponding S-SSB is located, as
well as the S-SSB index (or MSBs of the S-SSB index), can be
indicated in PSBCH content.
[0411] In another sub-example, if the periodicity of S-SSB burst
set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and the
location of the slot containing the S-SSB is fixed as starting from
a particular slot (such as the first slot) within the periodicity
of S-SSB burst set, then the (10-n) MSBs of DFN (e.g., a (10-n)-bit
field) wherein the PSBCH of the corresponding S-SSB is located can
be indicated in PSBCH content, and the S-SSB index is indicated
using other signal/channel from PSBCH such as DMRS of PSBCH.
[0412] In yet another sub-example, if the periodicity of S-SSB
burst set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and
the location of the slot containing the S-SSB is fixed as starting
from a particular slot (such as the first slot) within a DFN, then
the DFN (e.g., a 10-bit field taking value from 0 to 1023) wherein
the PSBCH of the corresponding S-SSB is located, as well as the
S-SSB index, can be indicated in PSBCH content.
[0413] In yet another sub-example, if the periodicity of S-SSB
burst set is 2{circumflex over ( )}n frame, where n.gtoreq.0, and
the location of the slot containing the S-SSB is fixed as starting
from a particular slot (such as the first slot) within a DFN, then
the DFN (e.g., a 10-bit field taking value from 0 to 1023) wherein
the PSBCH of the corresponding S-SSB is located can be indicated in
PSBCH content, and the S-SSB index is indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0414] In yet another sub-example, if the location of the slot
containing the S-SSB is fixed as starting from a particular slot
(such as the first slot) within a half frame, then the DFN (e.g., a
10-bit field taking value from 0 to 1023) and half frame number
(e.g., a 1-bit field indicating the first or second half frame
within a frame) wherein the PSBCH of the corresponding S-SSB is
located, as well as the S-SSB index (or MSBs of the S-SSB index),
can be indicated in PSBCH content.
[0415] In yet another sub-example, if the location of the slot
containing the S-SSB is fixed as starting from a particular slot
(such as the first slot) within a half frame, then the DFN (e.g., a
10-bit field taking value from 0 to 1023) and half frame number
(e.g., a 1-bit field indicating the first or second half frame
within a frame) wherein the PSBCH of the corresponding S-SSB is
located can be indicated in PSBCH content, and the S-SSB index is
indicated using other signal/channel from PSBCH such as DMRS of
PSBCH.
[0416] In an eighth example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs can be non-contiguous, and slots
containing the S-SSB are uniformly distributed with fixed interval
within a subset of the periodicity of the S-SSB burst set, and the
first slot containing the S-SSB is variable and indicated (e.g.,
2304 in FIG. 23). For instance, the indexes of slots containing the
S-SSB within the periodicity of S-SSB burst set (or the DFN, or the
half frame) can be given by #M, #M+(N/L), #M+2*(N/L), . . . ,
#M+(L_SSB-1)*(N/L) if each slot contains single S-SSB, and given by
#M, #M+2*(N/L), #M+2*2*(N/L), . . . , #M+2*(L_SSB/2-1)*(N/L) if
each slot contains two S-SSBs, wherein L_SSB is the maximum number
of S-SSBs in a burst set determined per carrier frequency range,
and N is the periodicity of S-SSB burst set (or the DFN, or the
half frame) in terms of slots, and M is the index of the first slot
containing the S-SSB which is indicated, and L is a predefined
integer with L>L_SSB.
[0417] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the first slot containing S-SSB is located, as well as the
S-SSB index (or MSBs of the S-SSB index), can be indicated in PSBCH
content, wherein the slot index within the DFN can be expressed in
a (k+4)-bit field taking value from 0 to M-1, where
M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k is the
largest SCS supported for NR sidelink (such as k=4) or a carrier
frequency range of NR sidelink (such as k=4 for above 6 GHz and k=1
for below 6 GHz).
[0418] In another sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the first slot containing S-SSB is located can be indicated
in PSBCH content, wherein the slot index within the DFN can be
expressed in a (k+4)-bit field taking value from 0 to M-1, where
M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k is the
largest SCS supported for NR sidelink (such as k=4) or a carrier
frequency range of NR sidelink (such as k=4 for above 6 GHz and k=1
for below 6 GHz), and the S-SSB index is indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0419] FIG. 24 illustrates another example time-domain mapping of
an S-SSB burst set 2400 according to embodiments of the present
disclosure. The embodiment of the time-domain mapping of an S-SSB
burst set 2400 illustrated in FIG. 24 is for illustration only.
FIG. 24 does not limit the scope of this disclosure to any
particular implementation.
[0420] In a ninth example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs can be non-contiguous, and each of
slots containing the S-SSB is confined within a predefined group of
slots, wherein the groups of slots are with same number of slots
and consist of the periodicity of the S-SSB burst set (e.g., 2401
in FIG. 24). For instance, the periodicity of the S-SSB burst set
is divided into L_SSB groups of slots if each slot contains single
S-SSB, and is divided into L_SSB/2 groups of slots if each slot
contains two S-SSBs, wherein each group is with same number of
slots and each group contains one slot containing the S-SSB, and
the location of the slot containing the S-SSB can be variable in
the corresponding group and indicated. In this example, the group
index is same as S-SSB index if each slot contains single S-SSB,
and the combination of group index and the location of S-SSB within
a slot (e.g., 1-bit indication) is same as S-SSB index if each slot
contains two S-SSBs.
[0421] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023), slot index within the group, as well as the
S-SSB index (or MSBs of the S-SSB index or group index), can be
indicated in PSBCH content.
[0422] In another sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and slot index within the group can be
indicated in PSBCH content, and the S-SSB index (or LSBs of the
S-SSB index or group index) is indicated using other signal/channel
from PSBCH such as DMRS of PSBCH.
[0423] In a tenth example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs can be non-contiguous, and each of
slots containing the S-SSB is confined within a predefined group of
slots, wherein the groups of slots are with same number of slots
and consist of a subset of the periodicity of the S-SSB burst set
(e.g., 2402 in FIG. 24).
[0424] For instance, a subset of the periodicity of the S-SSB burst
set is divided into L_SSB groups of slots if each slot contains
single S-SSB, and is divided into L_SSB/2 groups of slots if each
slot contains two S-SSBs, wherein each group is with same number of
slots and each group contains one slot containing the S-SSB, and
the location of the slot containing the S-SSB can be variable in
the corresponding group and indicated. In this example, the group
index is same as S-SSB index if each slot contains single S-SSB,
and the combination of group index and the location of S-SSB within
a slot (e.g., 1-bit indication) is same as S-SSB index if each slot
contains two S-SSBs.
[0425] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023), slot index within the group, as well as the
S-SSB index (or MSBs of the S-SSB index or group index), can be
indicated in PSBCH content.
[0426] In another sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and slot index within the group can be
indicated in PSBCH content, and the S-SSB index (or LSBs of the
S-SSB index or group index) is indicated using other signal/channel
from PSBCH such as DMRS of PSBCH.
[0427] In an eleventh example of the first approach, one S-SSB
burst set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB
is operated in a multi-beam manner and/or repetitive manner, and
the slots containing the S-SSBs can be non-contiguous, and the
location of each slot containing the S-SSB can be variable within
the periodicity of S-SSB burst set and indicated (e.g., 2403 in
FIG. 24).
[0428] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the PSBCH of the corresponding S-SSB is located can be
indicated in PSBCH content, wherein the slot index within the DFN
can be expressed in a (k+4)-bit field taking value from 0 to M-1,
where M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k
is the largest SCS supported for NR sidelink (such as k=4) or a
carrier frequency range of NR sidelink (such as k=4 for above 6 GHz
and k=1 for below 6 GHz). If each slot contains two S-SSBs, the
location of S-SSB within a slot (e.g., 1-bit indication for one of
the two S-SSBs in a slot) can also be indicated PSBCH content.
[0429] In another sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the PSBCH of the corresponding S-SSB is located can be
indicated in PSBCH content, wherein the slot index within the DFN
can be expressed in a (k+4)-bit field taking value from 0 to M-1,
where M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k
is the largest SCS supported for NR sidelink (such as k=4) or a
carrier frequency range of NR sidelink (such as k=4 for above 6 GHz
and k=1 for below 6 GHz). If each slot contains two S-SSBs, the
location of S-SSB within a slot (e.g., 1-bit indication for one of
the two S-SSBs in a slot) can be indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0430] In a twelfth example of the first approach, one S-SSB burst
set contains multiple S-SSB (i.e., L_SSB>1), such as S-SSB is
operated in a multi-beam manner and/or repetitive manner, and the
slots containing the S-SSBs can be non-contiguous, and the location
of each slot containing the S-SSB can be variable within a subset
of the periodicity of S-SSB burst set and indicated (e.g., 2404 in
FIG. 24).
[0431] In one sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the PSBCH of the corresponding S-SSB is located can be
indicated in PSBCH content, wherein the slot index within the DFN
can be expressed in a (k+4)-bit field taking value from 0 to M-1,
where M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k
is the largest SCS supported for NR sidelink (such as k=4) or a
carrier frequency range of NR sidelink (such as k=4 for above 6 GHz
and k=1 for below 6 GHz). If each slot contains two S-SSBs, the
location of S-SSB within a slot (e.g., 1-bit indication for one of
the two S-SSBs in a slot) can also be indicated PSBCH content.
[0432] In another sub-example, the DFN (e.g., a 10-bit field taking
value from 0 to 1023) and the slot index within the indicated DFN
wherein the PSBCH of the corresponding S-SSB is located can be
indicated in PSBCH content, wherein the slot index within the DFN
can be expressed in a (k+4)-bit field taking value from 0 to M-1,
where M=10*2{circumflex over ( )}k, and 15*2{circumflex over ( )}k
is the largest SCS supported for NR sidelink (such as k=4) or a
carrier frequency range of NR sidelink (such as k=4 for above 6 GHz
and k=1 for below 6 GHz). If each slot contains two S-SSBs, the
location of S-SSB within a slot (e.g., 1-bit indication for one of
the two S-SSBs in a slot) can be indicated using other
signal/channel from PSBCH such as DMRS of PSBCH.
[0433] In a second approach, PSBCH content can contain a sidelink
carrier bandwidth.
[0434] In a first example of this approach, the sidelink carrier
bandwidth is indicated from a set of values in the unit of RBs,
wherein the RB is in term of the SCS of S-SSB. The set of values
can be determined per carrier frequency range.
[0435] In a second example of this approach, the sidelink carrier
bandwidth is indicated from a set of values in the unit of RBs,
wherein the RB is in term of the SCS indicated in PSBCH content.
The set of values can be determined per indicated SCS and/or per
carrier frequency range.
[0436] In a third example of this approach, the sidelink carrier
bandwidth is indicated from a set of values in the unit of MHz. The
set of values can be determined per carrier frequency range.
[0437] In a third approach, PSBCH content can contain numerology
for a NR sidelink physical control channel (PSCCH) and/or NR
sidelink physical shared channel (PSSCH).
[0438] In a first example of this approach, the numerology can
contain at least subcarrier spacing for a PSSCH and/or PSCCH,
indicated from a predefined set of values in the unit of kHz. The
set of values can be determined per carrier frequency range.
[0439] In a second example of this approach, the numerology can
contain at least subcarrier spacing for a PSSCH and/or PSCCH
wherein the DMRS of the PSSCH and/or PSCCH is quasi co-located
(QCLed) with the DMRS of current PSBCH, and the subcarrier spacing
is indicated from a predefined set of values in the unit of kHz.
The set of values can be determined per carrier frequency
range.
[0440] In a fourth approach, PSBCH content can contain a frequency
offset, wherein the frequency offset can contain at least one of a
RE-level offset and a RB-level offset, where the RE or RB is in
term of the numerology of PSCCH.
[0441] For a first example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of PSCCH.
[0442] For a second example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of the carrier.
[0443] For a third example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of the PSSCH.
[0444] For a fourth example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of the BWP where the S-SSB is located.
[0445] In a fifth approach, PSBCH content can contain the
configuration of PSCCH and/or PSSCH.
[0446] In one example of this approach, the configuration can
contain the BWP configuration.
[0447] In another example of this approach, the configuration can
contain the multiplexing pattern of PSCCH and PSSCH.
[0448] In yet another example of this approach, the configuration
can contain the resource allocation for PSCCH, e.g., the
time-domain and frequency-domain resources mapped to PSCCH.
[0449] In yet another example of this approach, the configuration
can contain the TDD slot configuration.
[0450] In a sixth approach, PSBCH content can contain information
on the actually transmitted S-SSBs within a burst set.
[0451] In one example, the actually transmitted S-SSBs within a
burst set is a bitmap with the length same as the maximum number of
SS/PBCH blocks within a periodicity supported for a given band or
carrier frequency range.
[0452] In another approach, if PSBCH content does not contain any
information on the actually transmitted S-SSBs within a burst set,
the UE may assume all S-SSBs within a burst set are
transmitted.
[0453] In a seventh approach, PSBCH content can contain information
on the power offset between S-SSB and PSCCH (or PSSCH).
[0454] For example, the power offset can refer to the energy per
resource element (EPRE) between S-SSS (or equivalent as DMRS of
PSBCH if S-SSS and DMRS of PSBCH have the same EPRE or predefined
EPRE ratio) in the S-SSB and DMRS of PSCCH.
[0455] In an eighth approach, PSBCH content can contain information
on the periodicity of S-SSB burst set.
[0456] In a ninth approach, PSBCH content can contain indication of
the category of the system information in PSBCH content.
[0457] For example, 1 bit can be utilized to indicate whether the
system information is from a base station or from a vehicle
itself.
[0458] For another example, 2 bits can be utilized to indicate
whether the system information is from a base station or from a
vehicle itself, as well as the type of base station (e.g., NR base
station or an LTE base station).
[0459] In a tenth approach, PSBCH content can contain at least one
reserved bit for future extension.
[0460] In one embodiment, aspects for the scrambling of PSBCH are
specified.
[0461] In a first approach, if the transmission time interval (TTI)
of PSBCH is 2{circumflex over ( )}m DFNs, and the periodicity of
S-SSB burst set is 2{circumflex over ( )}n DFNs, where m and n are
integers and m.gtoreq.n, then the (n+1)-th to m-th LSBs of DFN in
the PSBCH content are not scrambled by the first-level scrambling
sequence (all bits of DFN are scrambled if m=n), and the other bits
in PSBCH content (not including CRC) are scrambled by the
first-level scrambling sequence, wherein the first-level scrambling
sequence is constructed based on sidelink synchronization ID and
the (n+1)-th to m-th LSBs of DFN. All the bits after the
first-level scrambling as well as the (n+1)-th to m-th LSBs of DFN
not scrambled in the first-level scrambling are utilized to
generate a CRC, and all the bits after the first-level scrambling,
the (n+1)-th to m-th LSBs of DFN not scrambled in the first-level
scrambling, together with the generated CRC are scrambled by the
second-level scrambling, wherein the second-level scrambling
sequence is constructed based on sidelink synchronization ID and,
if applicable, other timing information carried by S-SSB but not by
PSBCH (such as S-SSS and/or DMRS of PSBCH). An illustration of this
example is shown in FIG. 25.
[0462] FIG. 25 illustrates an example scrambling of PSBCH 2500
according to embodiments of the present disclosure. The embodiment
of the scrambling of PSBCH 2500 illustrated in FIG. 25 is for
illustration only. FIG. 25 does not limit the scope of this
disclosure to any particular implementation.
[0463] In a second approach, if the transmission time interval
(TTI) of PSBCH is 2{circumflex over ( )}m DFNs, and the periodicity
of S-SSB burst set is 2{circumflex over ( )}n DFNs, where m and n
are integers and m.gtoreq.n, then the 1st to m-th LSBs of DFN in
the PSBCH content are not scrambled by the first-level scrambling
sequence (all bits of DFN are scrambled if m=0), and the other bits
in PSBCH content (not including CRC) are scrambled by the
first-level scrambling sequence, wherein the first-level scrambling
sequence is constructed based on sidelink synchronization ID and
the 1st to m-th LSBs of DFN.
[0464] All the bits after the first-level scrambling as well as the
1st to m-th LSBs of DFN not scrambled in the first-level scrambling
are utilized to generate a CRC, and all the bits after the
first-level scrambling, the 1st to m-th LSBs of DFN not scrambled
in the first-level scrambling, together with the generated CRC are
scrambled by the second-level scrambling, wherein the second-level
scrambling sequence is constructed based on sidelink
synchronization ID and, if applicable, other timing information
carried by S-SSB but not by PSBCH (such as S-SSS and/or DMRS of
PSBCH). An illustration of this example is shown in FIG. 26.
[0465] FIG. 26 illustrates another example scrambling of PSBCH 2600
according to embodiments of the present disclosure. The embodiment
of the scrambling of PSBCH 2600 illustrated in FIG. 26 is for
illustration only. FIG. 26 does not limit the scope of this
disclosure to any particular implementation.
[0466] In a third approach, if the transmission time interval (TTI)
of PSBCH is 2{circumflex over ( )}m DFNs, and the periodicity of
S-SSB burst set is 2{circumflex over ( )}n DFNs, where m and n are
integers and m.gtoreq.n, then the 1st to m-th LSBs of DFN in the
PSBCH content are not scrambled by the first-level scrambling
sequence (all bits of DFN are scrambled if m=0), and the other bits
in PSBCH content (not including CRC) are scrambled by the
first-level scrambling sequence, wherein the first-level scrambling
sequence is constructed based on sidelink synchronization ID and
the (n+1)-th to m-th LSBs of DFN. All the bits after the
first-level scrambling as well as the 1st to m-th LSBs of DFN not
scrambled in the first-level scrambling are utilized to generate a
CRC, and all the bits after the first-level scrambling, the 1st to
m-th LSBs of DFN not scrambled in the first-level scrambling,
together with the generated CRC are scrambled by the second-level
scrambling, wherein the second-level scrambling sequence is
constructed based on sidelink synchronization ID and, if
applicable, other timing information carried by S-SSB but not by
PSBCH (such as S-SSS and/or DMRS of PSBCH). An illustration of this
example is shown in FIG. 27.
[0467] FIG. 27 illustrates yet another example scrambling of PSBCH
2700 according to embodiments of the present disclosure. The
embodiment of the scrambling of PSBCH 2700 illustrated in FIG. 27
is for illustration only. FIG. 27 does not limit the scope of this
disclosure to any particular implementation.
[0468] In a forth approach, all bits of DFN in the PSBCH content
are scrambled by the first-level scrambling sequence, wherein the
first-level scrambling sequence is constructed based on sidelink
synchronization ID only. All the bits after the first-level
scrambling are utilized to generate a CRC, and all the bits after
the first-level scrambling are scrambled by the second-level
scrambling, wherein the second-level scrambling sequence is
constructed based on sidelink synchronization ID and, if
applicable, other timing information carried by S-SSB but not by
PSBCH (such as S-SSS and/or DMRS of PSBCH). An illustration of this
example is shown in FIG. 28.
[0469] FIG. 28 illustrates yet another example scrambling of PSBCH
2800 according to embodiments of the present disclosure. The
embodiment of the scrambling of PSBCH 2800 illustrated in FIG. 28
is for illustration only. FIG. 28 does not limit the scope of this
disclosure to any particular implementation.
[0470] In a fifth approach, all bits other than CRC in the PSBCH
content are scrambled by the scrambling sequence, wherein the
scrambling sequence is constructed based on sidelink
synchronization ID and, if applicable, other timing information
carried by S-SSB but not by PSBCH (such as S-SSS and/or DMRS of
PSBCH). All the bits after the scrambling are utilized to generate
a CRC. There is only one level of scrambling in this approach. An
illustration of this example is shown in FIG. 29.
[0471] FIG. 29 illustrates yet another example scrambling of PSBCH
2900 according to embodiments of the present disclosure. The
embodiment of the scrambling of PSBCH 2900 illustrated in FIG. 29
is for illustration only. FIG. 29 does not limit the scope of this
disclosure to any particular implementation.
[0472] In one embodiment, aspects for the RE mapping of DMRS of
PSBCH are specified.
[0473] In a first approach, part of the symbols within the S-SSBs
are mapped for DMRS of PSBCH, such that symbol(s) containing DMRS
of PSBCH are time division multiplexed (TDMed) with symbols
containing PSBCH.
[0474] In one sub-approach, if the BW of S-SSB is larger than 12
RBs, and the BW of S-SSS is 12 RBs, then the remaining RBs, not
mapped for S-SSS, in the symbol(s) containing S-SSS within the
S-SSBs can be mapped for DMRS of PSBCH.
[0475] In one example of this approach, more than one TDM patterns
can be supported, and each TDM pattern is associated with a group
of sidelink synchronization IDs. For instance, the sidelink
synchronization IDs can be divided into 2 groups (such as
in-network and out-of-network), and the UE assumes the TDM pattern
of symbol(s) containing DMRS of PSBCH and symbols containing PSBCH
according to the detected sidelink synchronization ID from S-PSS
and/or S-SSS. One example of the two TDM patterns is illustrated in
FIG. 30, wherein some of the symbols containing DMRS of PSBCH in
the first TDM pattern are mapped for PSBCH in the second TDM
pattern, and some of the symbols containing PSBCH in the first TDM
pattern are mapped for DMRS of PSBCH in the second TDM pattern.
[0476] FIG. 30 illustrate an example TDM pattern of PSBCH and DMRS
3000 according to embodiments of the present disclosure. The
embodiment of the TDM pattern of PSBCH and DMRS 3000 illustrated in
FIG. 30 is for illustration only. FIG. 30 does not limit the scope
of this disclosure to any particular implementation.
[0477] In a second approach, DMRS of PSBCH is mapped to part of the
REs within each RB containing REs carrying PSBCH, such that REs
carrying DMRS of PSBCH are interleaved frequency division
multiplexed (IFDMed) with REs carrying PSBCH.
[0478] In one example of this approach, the RE index within a RB of
the RE carrying DMRS of PSBCH is fixed in the spec, such as
N_RE{circumflex over ( )}DMRS mod 4=1 or N_RE{circumflex over (
)}DMRS mod 2=0, wherein N_RE{circumflex over ( )}DMRS is the RE
index within a RB of the RE carrying DMRS of PSBCH.
[0479] In another example of this approach, the RE index within a
RB of the RE carrying DMRS of PSBCH is determined by the sidelink
synchronization ID. For one sub-example, N_RE{circumflex over (
)}DMRS mod 4=(N_ID{circumflex over ( )}SL mod 4), wherein
N_RE{circumflex over ( )}DMRS is the RE index within a RB of the RE
carrying DMRS of PSBCH. For another sub-example, N_RE{circumflex
over ( )}DMRS mod 2=(N_ID{circumflex over ( )}SL mod 2), wherein
N_RE{circumflex over ( )}DMRS is the RE index within a RB of the RE
carrying DMRS of PSBCH.
[0480] In one embodiment, part of the system information could also
be preconfigured, and is known to the V2X UE trying to synchronize
to the source.
[0481] One or more approaches can be supported at the same time to
construct the preconfigured system information. For example, some
approach or example of approach can be supported for a carrier
frequency range only.
[0482] In a first approach, the preconfigured system information
can contain numerology for NR sidelink, and all the NR sidelink
signals and channels are using the preconfigured numerology until
configured again, if there is an extra configuration of numerology.
The numerology contains at least one subcarrier spacing and a CP
length.
[0483] In a second approach, the preconfigured system information
can contain a sidelink carrier bandwidth.
[0484] In a first example of this approach, the sidelink carrier
bandwidth is indicated from a set of values defined in the unit of
RBs, wherein the RB is in term of the SCS contained within the
preconfigured information. The set of values can be determined per
carrier frequency range.
[0485] In a second example of this approach, the sidelink carrier
bandwidth is indicated from a set of values defined in the unit of
MHz. The set of values can be determined per carrier frequency
range.
[0486] In a third approach, the preconfigured system information
can contain the synchronization raster entry where an SS/PBCH block
is located in the frequency domain.
[0487] In one example, the synchronization entry can be selected
from a set of predefined frequency locations for a given band.
[0488] In a fourth approach, the preconfigured system information
can contain a frequency offset, wherein the frequency offset can
contain at least one of a RE-level offset and a RB-level offset,
where the RE or RB is in term of the numerology in the
preconfigured information.
[0489] For a first example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of PSCCH.
[0490] For a second example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of the carrier.
[0491] For a third example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of the PSSCH.
[0492] For a fourth example of this approach, the frequency offset
refers to the difference between the lowest RE of the S-SSB and
lowest RE of the BWP where the S-SSB is located.
[0493] In a fifth approach, the preconfigured system information
can contain a BWP configuration. All the NR sidelink signals and
channels are assumed to be with the preconfigured BWP until
configured again, if there is an extra configuration of
numerology.
[0494] In a sixth approach, the preconfigured system information
can contain the indication of actually transmitted S-SSBs within a
burst set.
[0495] In one example, the actually transmitted S-SSBs within a
burst set is a bitmap with the length same as the maximum number of
S-SSBs within a periodicity supported for a given band or carrier
frequency range.
[0496] In a seventh approach, the preconfigured system information
can contain the periodicity of S-SSB burst set.
[0497] In one embodiment, one sidelink SS/PBCH block (S-SSB)
comprises of 2 OFDM symbols mapped for sidelink primary
synchronization signal (S-PSS), 2 OFDM symbols mapped for sidelink
secondary synchronization signal (S-SSS), and X OFDM symbols mapped
for physical sidelink broadcast channel (PSBCH) and associated
demodulation reference signal (DMRS). Hence, in totally, an S-SSB
spans X+4 OFDM symbols, and the X+4 OFDM symbols are consecutive in
time domain.
[0498] In one approach, X is fixed for all S-SSBs. One of the
examples in this embodiment can be applicable for the composition
of S-SSB if X is fixed.
[0499] In another approach, X can be variable/configurable, and a
pre-configuration is known to the V2X UE that tries to synchronize
to the synchronization source. At least one of the examples in this
embodiment can be applicable for the composition of S-SSB with
respect to a given X, if X is variable/configurable.
[0500] For one example of this approach, X can be different
according to the numerology of S-SSB (e.g., cyclic prefix length),
e.g., for normal CP, one S-SSB has X_1 number of symbols mapped for
PSBCH and DMRS, while for extended CP, one S-SSB has X_2 number of
symbols mapped for PSBCH and DMRS, wherein X_1 is different from
X_2 (e.g., X_1>X_2), and the S-SSB composition can be different
for normal CP and extended CP (e.g., one example of this embodiment
with X_1 number of symbols for PSBCH and DMRS is used for normal
CP, and another example of this embodiment with X_2 number of
symbols for PSBCH and DMRS is used for extended CP). In one
instance, the S-SSB for extended CP is truncated from the S-SSB for
normal CP by last symbol(s), e.g., the last two symbols such that
X_1=X_2+2. For one particular consideration for this instance,
X_1=12 and X_2=10. For another particular consideration for this
instance, X_1=13 and X_2=11.
[0501] In one approach, an S-SSB comprises of 8 OFDM symbols (e.g.,
X=4).
[0502] FIG. 31 illustrates an example S-SSB 3100 according to
embodiments of the present disclosure. The embodiment of the S-SSB
3100 illustrated in FIG. 31 is for illustration only. FIG. 31 does
not limit the scope of this disclosure to any particular
implementation.
[0503] In one example (e.g., 3101 in FIG. 31), #2 and #3 symbols in
a S-SSB are mapped for S-PSS, and #5 and #7 symbols in a S-SSB are
mapped for S-SSS, and #1, #4, #6, and #8 symbols in a S-SSB are
mapped for PSBCH and DMRS.
[0504] In another example (e.g., 3102 in FIG. 31), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, and #6 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0505] In yet another example (e.g., 3103 in FIG. 31), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #7, and #8 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0506] In yet another example (e.g., 3104 in FIG. 31), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, and #8 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0507] In yet another example (e.g., 3105 in FIG. 31), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #4 and #7 symbols in a
S-SSB are mapped for S-SSS, and #3, #5, #6, and #8 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0508] In yet another example (e.g., 3106 in FIG. 31), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, and #6 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0509] In yet another example (3107 in FIG. 31), #1 and #2 symbols
in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a S-SSB
are mapped for S-SSS, and #3, #4, #7, and #8 symbols in a S-SSB are
mapped for PSBCH and DMRS.
[0510] In another approach, a S-SSB comprises of 9 OFDM symbols
(e.g., X=5).
[0511] FIG. 32 illustrates another example S-SSB 3200 according to
embodiments of the present disclosure. The embodiment of the S-SSB
3200 illustrated in FIG. 32 is for illustration only. FIG. 32 does
not limit the scope of this disclosure to any particular
implementation.
[0512] In one example (e.g., 3201 in FIG. 32), #2 and #3 symbols in
a S-SSB are mapped for S-PSS, and #5 and #7 symbols in a S-SSB are
mapped for S-SSS, and #1, #4, #6, #8, and #9 symbols in a S-SSB are
mapped for PSBCH and DMRS.
[0513] In another example (e.g., 3202 in FIG. 32), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #8 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #6, and #7 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0514] In yet another example (e.g., 3203 in FIG. 32), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #8, and #9 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0515] In yet another example (e.g., 3204 in FIG. 32), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #8 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #6, #7, and #9 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0516] In yet another example (e.g., 3205 in FIG. 32), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #4 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #5, #6, #7, and #9 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0517] In yet another example (e.g., 3206 in FIG. 32), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #8 and #9 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #6, and #7 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0518] In yet another example (e.g., 3207 in FIG. 32), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #7, #8, and #9 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0519] In yet another example (e.g., 3208 in FIG. 32), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #8, and #9 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0520] In yet another example (e.g., 3209 in FIG. 32), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #7 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #6, #8, and #9 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0521] In yet another approach, an S-SSB comprises of 10 OFDM
symbols (e.g., X=6).
[0522] FIG. 33A illustrates yet another example S-SSB 3300
according to embodiments of the present disclosure. The embodiment
of the S-SSB 3300 illustrated in FIG. 33A is for illustration only.
FIG. 33A does not limit the scope of this disclosure to any
particular implementation.
[0523] In one example (e.g., 3301 in FIG. 33A), #2 and #3 symbols
in a S-SSB are mapped for S-PSS, and #6 and #8 symbols in a S-SSB
are mapped for S-SSS, and #1, #4, #5, #7, #9, and #10 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0524] In another example (e.g., 3302 in FIG. 33A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #9 and #10 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, and #8
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0525] In yet another example (e.g., 3303 in FIG. 33A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #8, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0526] In yet another example (e.g., 3304 in FIG. 33A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0527] In yet another example (e.g., 3305 in FIG. 33A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #7, #8, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0528] In yet another example (e.g., 3306 in FIG. 33A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #9 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #7, and #8
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0529] In yet another example (3307 in FIG. 33A), #1 and #2 symbols
in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a S-SSB
are mapped for S-SSS, and #3, #4, #5, #8, #9, and #10 symbols in a
S-SSB are mapped for PSBCH and DMRS.
[0530] In yet another example (e.g., 3308 in FIG. 33A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #6, #7, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0531] In yet another example (e.g., 3309 in FIG. 33A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #4 and #9 symbols in a
S-SSB are mapped for S-SSS, and #3, #5, #6, #7, #8, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0532] FIG. 33B illustrates yet another example S-SSB 3320
according to embodiments of the present disclosure. The embodiment
of the S-SSB 3320 illustrated in FIG. 33B is for illustration only.
FIG. 33B does not limit the scope of this disclosure to any
particular implementation.
[0533] In yet another example (e.g., 3310 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #3 and #4 symbols in a
S-SSB are mapped for S-SSS, and #5, #6, #7, #8, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0534] In yet another example (e.g., 3311 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #4 and #5 symbols in a
S-SSB are mapped for S-SSS, and #3, #6, #7, #8, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0535] In yet another example (e.g., 3312 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #7, #8, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0536] In yet another example (e.g., 3313 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0537] In yet another example (e.g., 3314 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #8 and #9 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #7, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0538] In yet another example (e.g., 3315 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #4 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #5, #6, #7, #8, and #9
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0539] In yet another example (e.g., 3316 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #6, #7, #8, and #9
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0540] In yet another example (e.g., 3317 in FIG. 33B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #7, #8, and #9
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0541] In yet another example (e.g., 3318 in FIG. 33B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #1 and #4 symbols in a
S-SSB are mapped for S-SSS, and #5, #6, #7, #8, #9, and #10 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0542] In yet another approach, an S-SSB comprises of 11 OFDM
symbols (e.g., X=7).
[0543] FIG. 34A illustrates yet another example S-SSB 3400
according to embodiments of the present disclosure. The embodiment
of the gNB 102 illustrated in FIG. 34A is for illustration only.
FIG. 34A does not limit the scope of this disclosure to any
particular implementation.
[0544] In one example (e.g., 3401 in FIG. 34A), #2 and #3 symbols
in a S-SSB are mapped for S-PSS, and #6 and #9 symbols in a S-SSB
are mapped for S-SSS, and #1, #4, #5, #7, #8, #10, and #11 symbols
in a S-SSB are mapped for PSBCH and DMRS.
[0545] In another example (e.g., 3402 in FIG. 34A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #10 and #11 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #8, and #9
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0546] In yet another example (e.g., 3403 in FIG. 34A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0547] In yet another example (e.g., 3404 in FIG. 34A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0548] In yet another example (e.g., 3405 in FIG. 34A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #8, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0549] In yet another example (e.g., 3406 in FIG. 34A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #10 and #11 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #7, #8, and #9
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0550] In yet another example (e.g., 3407 in FIG. 34A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #8, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0551] In yet another example (e.g., 3408 in FIG. 34A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #9 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #6, #7, #8, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0552] In yet another example (e.g., 3409 in FIG. 34A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0553] FIG. 34B illustrates yet another example S-SSB 3420
according to embodiments of the present disclosure. The embodiment
of the S-SSB 3420 illustrated in FIG. 34B is for illustration only.
FIG. 34B does not limit the scope of this disclosure to any
particular implementation.
[0554] In yet another example (e.g., 3410 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #4 and #5 symbols in a
S-SSB are mapped for S-SSS, and #1, #6, #7, #8, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0555] In yet another example (e.g., 3411 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #7, #8, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0556] In yet another example (e.g., 3412 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #8 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0557] In yet another example (e.g., 3413 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #9 and #10 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #8, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0558] In yet another example (e.g., 3414 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #11 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, #9, and #10
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0559] In yet another example (e.g., 3415 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #10 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, #9, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0560] In yet another example (e.g., 3416 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #6 and #11 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #7, #8, #9, and #10
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0561] In yet another example (e.g., 3417 in FIG. 34B), #3 and #4
symbols in a S-SSB are mapped for S-PSS, and #2 and #5 symbols in a
S-SSB are mapped for S-SSS, and #1, #6, #7, #8, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0562] In yet another example (e.g., 3418 in FIG. 34B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #1 and #4 symbols in a
S-SSB are mapped for S-SSS, and #5, #6, #7, #8, #9, #10, and #11
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0563] In yet another approach, a S-SSB comprises of 12 OFDM
symbols (e.g., X=8).
[0564] FIG. 35A illustrates yet another example S-SSB 3500
according to embodiments of the present disclosure. The embodiment
of the S-SSB 3500 illustrated in FIG. 35B is for illustration only.
FIG. 35B does not limit the scope of this disclosure to any
particular implementation.
[0565] In one example (e.g., 3501 in FIG. 35A), #2 and #3 symbols
in a S-SSB are mapped for S-PSS, and #6 and #10 symbols in a S-SSB
are mapped for S-SSS, and #1, #4, #5, #7, #8, #9, #11, and #12
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0566] In another example (e.g., 3502 in FIG. 35A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #11 and #12 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #8, #9, and
#10 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0567] In yet another example (e.g., 3503 in FIG. 35A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0568] In yet another example (e.g., 3504 in FIG. 35A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #8 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0569] In yet another example (e.g., 3505 in FIG. 35A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0570] In yet another example (e.g., 3506 in FIG. 35A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #11 and #12 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #7, #8, #9, and
#10 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0571] In yet another example (e.g., 3507 in FIG. 35A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #9 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #7, #8, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0572] In yet another example (e.g., 3508 in FIG. 35A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #6, #7, #8, #9, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0573] In yet another example (e.g., 3509 in FIG. 35A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0574] FIG. 35B illustrates yet another example S-SSB 3520
according to embodiments of the present disclosure. The embodiment
of the S-SSB 3520 illustrated in FIG. 35B is for illustration only.
FIG. 35B does not limit the scope of this disclosure to any
particular implementation.
[0575] In yet another example (e.g., 3510 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #3 and #4 symbols in a
S-SSB are mapped for S-SSS, and #5, #6, #7, #8, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0576] In yet another example (e.g., 3511 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #4 and #5 symbols in a
S-SSB are mapped for S-SSS, and #3, #6, #7, #8, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0577] In yet another example (e.g., 3512 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #7, #8, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0578] In yet another example (e.g., 3513 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #8, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0579] In yet another example (e.g., 3514 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #9 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #7, #8, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0580] In yet another example (e.g., 3515 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #9 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #7, #8, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0581] In yet another example (e.g., 3516 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #7, #8, #9, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0582] In yet another example (e.g., 3517 in FIG. 35B), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #5 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #6, #7, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0583] In yet another example (e.g., 3518 in FIG. 35B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #1 and #4 symbols in a
S-SSB are mapped for S-SSS, and #5, #6, #7, #8, #9, #10, #11, and
#12 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0584] In yet another approach, a S-SSB comprises of 13 OFDM
symbols (e.g., X=9).
[0585] FIG. 36A illustrates yet another example S-SSB 3600
according to embodiments of the present disclosure. The embodiment
of the S-SSB 3600 illustrated in FIG. 36A is for illustration only.
FIG. 36A does not limit the scope of this disclosure to any
particular implementation.
[0586] In one example (e.g., 3601 in FIG. 36A), #2 and #3 symbols
in a S-SSB are mapped for S-PSS, and #6 and #11 symbols in a S-SSB
are mapped for S-SSS, and #1, #4, #5, #7, #8, #9, #10, #12, and #13
symbols in a S-SSB are mapped for PSBCH and DMRS.
[0587] In another example (e.g., 3602 in FIG. 36A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #12 and #13 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #8, #9, #10,
and #11 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0588] In yet another example (e.g., 3603 in FIG. 36A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #8 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0589] In yet another example (e.g., 3604 in FIG. 36A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #7 and #10 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #8, #9, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0590] In yet another example (e.g., 3605 in FIG. 36A), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #9, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0591] In yet another example (e.g., 3606 in FIG. 36A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #12 and #13 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #7, #8, #9, #10,
and #11 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0592] In yet another example (e.g., 3607 in FIG. 36A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #6 and #10 symbols in
a S-SSB are mapped for S-SSS, and #3, #4, #5, #7, #8, #9, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0593] In yet another example (e.g., 3608 in FIG. 36A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #8 and #9 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #7, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0594] In yet another example (e.g., 3609 in FIG. 36A), #1 and #2
symbols in a S-SSB are mapped for S-PSS, and #7 and #8 symbols in a
S-SSB are mapped for S-SSS, and #3, #4, #5, #6, #9, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0595] FIG. 36B illustrates yet another example S-SSB3620 according
to embodiments of the present disclosure. The embodiment of the
S-SSB3620 illustrated in FIG. 36B is for illustration only. FIG.
36B does not limit the scope of this disclosure to any particular
implementation.
[0596] In yet another example (e.g., 3610 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #4 and #5 symbols in a
S-SSB are mapped for S-SSS, and #1, #6, #7, #8, #9, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0597] In yet another example (e.g., 3611 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #6 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #7, #8, #9, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0598] In yet another example (e.g., 3612 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #6 and #7 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #8, #9, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0599] In yet another example (e.g., 3613 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #10 and #11 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #5, #6, #7, #8, #9, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0600] In yet another example (e.g., 3614 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #6 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #5, #7, #8, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0601] In yet another example (e.g., 3615 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #9 symbols in a
S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0602] In yet another example (e.g., 3616 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #11 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, #9, #10, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0603] In yet another example (e.g., 3617 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #5 and #10 symbols in
a S-SSB are mapped for S-SSS, and #1, #4, #6, #7, #8, #9, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0604] In yet another example (e.g., 3618 in FIG. 36B), #2 and #3
symbols in a S-SSB are mapped for S-PSS, and #4 and #5 symbols in a
S-SSB are mapped for S-SSS, and #1, #6, #7, #8, #9, #10, #11, #12,
and #13 symbols in a S-SSB are mapped for PSBCH and DMRS.
[0605] In one embodiment, the mapping of S-SSB in a slot is
fixed.
[0606] For one approach, the first symbol of S-SSB (e.g., symbol #1
in an S-SSB in the examples of the first embodiment of this
disclosure) is aligned with the first OFDM symbol of a slot. For
example, if the number of the total number of symbols for an S-SSB
is smaller than or equal to the total number of OFDM symbols in a
slot (e.g., 14 symbols for normal CP or 12 symbols for extended
CP), the S-SSB starts from the first OFDM symbol in the slot, and
the remaining symbol(s) (e.g., the last one or several symbols
within the slot) could be utilized for other purpose (e.g., TX/RX
switch gap and/or multiplexing with other signals/channels).
[0607] For another approach, the first symbol of S-SSB (e.g.,
symbol #1 in an S-SSB in the examples of the first embodiment of
this disclosure) is aligned with the second OFDM symbol of a slot.
For example, the S-SSB starts from the second OFDM symbol in the
slot, and the first symbol in the slot is reserved (e.g., for AGC
purpose), and the remaining symbol(s) (e.g., the last one or
several symbols within the slot) could be utilized for other
purpose (e.g., TX/RX switch gap and/or multiplexing with other
signals/channels).
[0608] For yet another approach, the last symbol of S-SSB is
aligned with the second last OFDM symbol of a slot. For example,
the number of the total number of symbols for an S-SSB is smaller
than or equal to the total number of OFDM symbols in a slot (e.g.,
14 symbols for normal CP or 12 symbols for extended CP), the S-SSB
ends at the second last symbol of a slot (e.g., 13th symbol of a
slot for normal CP or 11th symbol of a slot for extended CP), and
the last symbol in the slot is reserved (e.g., for TX/RX switch
gap), and the remaining symbol(s) (e.g., the first one or several
symbols within the slot), if any, could be utilized for other
purpose (e.g., AGC and/or multiplexing with other
signals/channels).
[0609] In another embodiment, the mapping of S-SSB in a slot is
variable/configurable.
[0610] For one approach, if the number of the total number of
symbols for an S-SSB is smaller than or equal to the total number
of OFDM symbols in a slot (e.g., 14 symbols for normal CP or 12
symbols for extended CP), the S-SSB can start at any symbol in the
slot (e.g., last symbol is reserved for TX/RX switch gap purpose)
or a subset of the slot. For one aspect, one of the starting
location within the slot where S-SSB starts is pre-configured to
the V2X UE that tries to synchronize to the synchronization source.
For another aspect, one of the starting location within the slot
where S-SSB starts is indicated to the V2X UE that tries to
synchronize to the synchronization source. One illustration of this
approach is shown in FIG. 37.
[0611] FIG. 37 illustrates an example S-SSB location within a slot
3700 according to embodiments of the present disclosure. The
embodiment of the S-SSB location within a slot 3700 illustrated in
FIG. 37 is for illustration only. FIG. 37 does not limit the scope
of this disclosure to any particular implementation.
[0612] At least one of the following examples can be supported for
the indication/pre-configuration of the variation/configuration of
the mapping of S-SSB in a slot (e.g., by indicating the starting
position of S-SSB within a slot).
[0613] In one example, the indication of the
variation/configuration of the mapping of S-SSB is in the payload
of PSBCH, e.g., a field in the payload of PSBCH indicates the
starting location of S-SSB within the slot.
[0614] In another example, the variation/configuration of the
mapping of S-SSB is pre-configured to the V2X UE that tries to
synchronize to the synchronization source.
[0615] In yet another example, the indication of the
variation/configuration of the mapping of S-SSB is carried by the
DMRS sequence of PSBCH within the S-SSB.
[0616] In yet another example, the indication of the
variation/configuration of the mapping of S-SSB is carried by the
combination of DMRS sequence of PSBCH and the payload of PSBCH
within the S-SSB.
[0617] In one embodiment, the S-SSB burst set can comprise at least
one S-SSB and serves as the unit to be periodically transmitted in
time domain.
[0618] In a first approach for the burst set composition, an S-SSB
burst set can comprise a single S-SSB. For example, the S-SSB can
be transmitted using a single-beam operation, such as for sub 6 GHz
carrier frequency. In one consideration, the time domain location
of the single S-SSB can be configurable, and the location is
indicated in the signal/channel of the S-SSB, e.g., the content of
PSBCH.
[0619] In a second approach for the burst set composition, an S-SSB
burst set can comprise multiple S-SSBs, and the maximum number of
S-SSBs in an S-SSB burst set can be determined based on the carrier
frequency range and/or the SCS of S-SSBs. For example, the S-SSBs
can be transmitted using a multiple-beam operation, or in a
repetitive operation method, or the combination of multi-beam
operation and repetitive operation.
[0620] In one example of the second approach, the multiple S-SSBs
within an S-SSB burst set have the same composition method. For
example, the S-SSB structure is the same within an S-SSB burst set,
and the slots containing S-SSBs are repeated to construct the S-SSB
burst set.
[0621] In another example of the second approach, the multiple
S-SSBs within an S-SSB burst set have different composition
methods. For example, the S-SSB structure could be different within
an S-SSB burst set, and different examples in this disclosure are
concatenated to construct the S-SSB burst set.
[0622] In a first approach for the actually transmitted S-SSBs
within a burst set, the number of actually transmitted S-SSBs
within a burst set is the same as the maximum number of S-SSBs
within a burst set, such that if the maximum number of S-SSBs
within a burst set is defined, every burst set has to contain the
maximum number of S-SSBs for transmission.
[0623] In a second approach for the actually transmitted S-SSBs
within a burst set, the number of actually transmitted S-SSBs
within a burst set is smaller or equal to the maximum number of
S-SSBs within a burst set, and information related to the number of
actually transmitted S-SSBs within a burst set is indicated or
known to the V2X UE. For one example on the information related to
the number of actually transmitted S-SSBs within a burst set, it
can be an explicit indication of the number of actually transmitted
S-SSBs within a burst set. In one consideration of this example,
the starting location and/or ending location of the S-SSBs within a
burst set could be either fixed or indicated, wherein the number of
S-SSBs within a burst set is as indicated.
[0624] For another example on the information related to the number
of actually transmitted S-SSBs within a burst set, it can be an
implicit indication from a bitmap indicating the actually
transmitted S-SSBs within a burst set. In one example of the
indication method, the indication can be in the PSBCH content. In
another example of the indication method, the indication can be in
the pre-configured information, e.g., associated with the
pre-configured BWP.
[0625] In a third approach for the actually transmitted S-SSBs
within a burst set, the number of actually transmitted S-SSBs
within a burst set is fixed, regardless of the maximum number of
S-SSBs within a burst set. In one consideration of this approach,
the fixed number of actually transmitted S-SSBs could be different
based on carrier frequency range and/or SCS of S-SSBs. For one
example, the fixed number of the actually transmitted S-SSBs within
a burst set is one.
[0626] Although the present disclosure has been described with an
exemplary embodiment, various changes and modifications may be
suggested to one skilled in the art. It is intended that the
present disclosure encompass such changes and modifications as fall
within the scope of the appended claims.
[0627] None of the description in this application should be read
as implying that any particular element, step, or function is an
essential element that must be included in the claims scope. The
scope of patented subject matter is defined only by the claims.
Moreover, none of the claims are intended to invoke 35 U.S.C.
.sctn. 112(f) unless the exact words "means for" are followed by a
participle.
* * * * *