U.S. patent application number 16/990902 was filed with the patent office on 2020-11-26 for method and device for srs transmission.
This patent application is currently assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP, LTD.. The applicant listed for this patent is GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP, LTD.. Invention is credited to Wenhong CHEN, Zhihua SHI.
Application Number | 20200374156 16/990902 |
Document ID | / |
Family ID | 1000005007048 |
Filed Date | 2020-11-26 |
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United States Patent
Application |
20200374156 |
Kind Code |
A1 |
CHEN; Wenhong ; et
al. |
November 26, 2020 |
METHOD AND DEVICE FOR SRS TRANSMISSION
Abstract
The embodiments of the disclosure provide a method and device
for Sounding Reference Signal (SRS) transmission. The method
includes that: User Equipment (UE) determines an activated uplink
Bandwidth Part (BWP); the UE determines an SRS parameter
configuration corresponding to the active uplink BWP; and the UE
transmits an SRS in the active uplink BWP according to the SRS
parameter configuration. With adoption of the embodiments of the
disclosure, SRS transmission flexibility can be improved.
Inventors: |
CHEN; Wenhong; (Dongguan,
CN) ; SHI; Zhihua; (Dongguan, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP, LTD. |
Dongguan |
|
CN |
|
|
Assignee: |
GUANGDONG OPPO MOBILE
TELECOMMUNICATIONS CORP, LTD.
Dongguan
CN
|
Family ID: |
1000005007048 |
Appl. No.: |
16/990902 |
Filed: |
August 11, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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16700966 |
Dec 2, 2019 |
10778475 |
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16990902 |
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PCT/CN2018/072502 |
Jan 12, 2018 |
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16700966 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04L 5/0051 20130101;
H04W 56/001 20130101; H04W 72/0473 20130101; H04W 72/042 20130101;
H04L 5/0092 20130101; H04W 80/08 20130101; H04L 1/0026 20130101;
H04L 25/0226 20130101 |
International
Class: |
H04L 25/02 20060101
H04L025/02; H04L 1/00 20060101 H04L001/00; H04L 5/00 20060101
H04L005/00; H04W 56/00 20060101 H04W056/00; H04W 72/04 20060101
H04W072/04; H04W 80/08 20060101 H04W080/08 |
Claims
1. A method for Sounding Reference Signal (SRS) transmission,
comprising: receiving, by User Equipment (UE), high-layer
signaling, wherein the high-layer signaling is for setting at least
one SRS parameter configuration respectively for each of a
plurality of uplink BWPs of the UE; determining, by the UE, an
active uplink Bandwidth Part (BWP) among the plurality of uplink
BWPs; determining, by the UE, an SRS parameter configuration
corresponding to the active uplink BWP according to the high-layer
signaling; and transmitting, by the UE, an SRS in the active uplink
BWP according to the SRS parameter configuration.
2. The method of claim 1, wherein determining, by the UE, the
active uplink BWP comprises: determining, by the UE, the active
uplink BWP according to BWP indication information, wherein latest
received Downlink Control Information (DCI) for scheduling uplink
transmission comprises the BWP indication information.
3. The method of claim 1, wherein the SRS parameter configuration
comprises at least one of: a configuration of at least one SRS
resource set in the active uplink BWP or a configuration of at
least one SRS resource in the active uplink BWP.
4. The method of claim 3, wherein the configuration of the at least
one SRS resource set comprises at least one of: a power control
parameter configuration of the at least one SRS resource set, a
usage configuration of the at least one SRS resource set, an
aperiodic triggering state corresponding to the at least one SRS
resource set, or a Channel State Information Reference Signal
(CSI-RS) configuration associated with the at least one SRS
resource set.
5. The method of claim 3, wherein the configuration of the at least
one SRS resource comprises at least one of: a time-frequency
resource configuration of the at least one SRS resource, a sequence
configuration of the at least one SRS resource, an antenna port
configuration of the at least one SRS resource, a periodicity
configuration of the at least one SRS resource, a spatial relation
configuration of the at least one SRS resource, or an aperiodic
triggering state corresponding to the at least one SRS
resource.
6. The method of claim 1, further comprising: under a condition
that DCI which indicates activation of the active uplink BWP
comprises aperiodic SRS triggering signaling, determining, by the
UE, at least one SRS resource set corresponding to the active
uplink BWP as an SRS resource set which carries SRS transmission
triggered by the aperiodic SRS triggering signaling.
7. The method of claim 4, wherein the SRS parameter configuration
comprises the power control parameter configuration of the at least
one SRS resource set; and transmitting, by the UE, the SRS in the
active uplink BWP according to the SRS parameter configuration
comprises: determining, by the UE, transmit power for SRS
transmission on the SRS resource set according to the power control
parameter configuration of the at least one SRS resource set; and
transmitting the SRS in the active uplink BWP according to the
determined transmit power.
8. The method of claim 4, wherein the SRS parameter configuration
comprises the usage configuration of the SRS resource set; and
transmitting, by the UE, the SRS in the active uplink BWP according
to the SRS parameter configuration comprises: determining, by the
UE, an antenna port, a transmission beam or an SRS resource number
for SRS transmission on the SRS resource set according to the usage
configuration of the SRS resource set, and transmitting the SRS in
the active uplink BWP according to the determined antenna port,
transmission beam or SRS resource number.
9. The method of claim 4, wherein the SRS parameter configuration
comprises the aperiodic triggering state corresponding to the SRS
resource set; and transmitting, by the UE, the SRS in the active
uplink BWP according to the SRS parameter configuration comprises:
determining, by the UE, an SRS resource set for aperiodic SRS
transmission in the active uplink BWP according to the aperiodic
triggering state corresponding to the SRS resource set and the
aperiodic SRS triggering signaling, and transmitting the SRS in the
active uplink BWP according to the determined SRS resource set.
10. The method of claim 4, wherein the SRS parameter configuration
comprises the CSI-RS resource configuration associated with the SRS
resource set; and transmitting, by the UE, the SRS in the active
uplink BWP according to the SRS parameter configuration comprises:
determining, by the UE, at least one of a beam or a precoding
matrix for SRS transmission on the SRS resource set according to
the CSI-RS resource configuration associated with the SRS resource
set, and transmitting the SRS in the active uplink BWP according to
the determined at least one of beam or precoding matrix.
11. The method of claim 4, wherein the SRS parameter configuration
comprises a spatial relation parameter of the SRS resource; and
transmitting, by the UE, the SRS in the active uplink BWP according
to the SRS parameter configuration comprises: determining, by the
UE, a target SRS resource, a CSI-RS resource or a Synchronization
Signal Block (SSB) spatially correlated with the SRS resource
according to the spatial relation parameter of the SRS resource;
determining, by the UE, a transmission beam of the SRS resource
according to the target SRS resource, the CSI-RS resource or the
SSB; and transmitting, by the UE, the SRS in the active uplink BWP
according to the determined transmission beam;
12. The method of claim 5, wherein the SRS parameter configuration
comprises the sequence configuration of the SRS resource; and
transmitting, by the UE, the SRS in the active uplink BWP according
to the SRS parameter configuration comprises: determining, by the
UE, an SRS sequence for SRS transmission on the SRS resource
according to the sequence configuration of the SRS resource, and
transmitting the SRS in the active uplink BWP according to the
determined SRS sequence;
13. The method of claim 5, wherein the SRS parameter configuration
comprises the periodicity configuration of the SRS resource; and
transmitting, by the UE, the SRS in the active uplink BWP according
to the SRS parameter configuration comprises: determining, by the
UE, a periodicity operation for SRS transmission on the SRS
resource according to the periodicity configuration of the SRS
resource, and transmitting the SRS in the active uplink BWP
according to the determined periodicity operation.
14. User Equipment (UE), comprising: one or more processors; memory
operatively coupled to the one or more processors, the memory
storing one or more programs configured for execution by the one or
more processors, the one or more programs comprising instructions
for implementing a method for Sounding Reference Signal (SRS)
transmission, wherein the method comprising: receiving high-layer
signaling, wherein the high-layer signaling is used for setting at
least one SRS parameter configuration respectively for each of a
plurality of uplink BWPs of the UE; determining an active uplink
Bandwidth Part (BWP) among the plurality of uplink BWPs;
determining an SRS parameter configuration corresponding to the
active uplink BWP according to the high-layer signaling; and
transmitting an SRS in the active uplink BWP according to the SRS
parameter configuration.
15. The UE of claim 14, wherein the one or more programs comprises
instructions configured to execute a step of: determining the
active uplink BWP according to BWP indication information, wherein
latest received Downlink Control Information (DCI) for scheduling
uplink transmission comprises the BWP indication information.
16. The UE of claim 14, wherein the SRS parameter configuration
comprises at least one of: a configuration of at least one SRS
resource set in the active uplink BWP or a configuration of at
least one SRS resource in the active uplink BWP.
17. The UE of claim 16, wherein the configuration of the at least
one SRS resource set comprises at least one of: a power control
parameter configuration of the at least one SRS resource set, a
usage configuration of the at least one SRS resource set, an
aperiodic triggering state corresponding to the at least one SRS
resource set, or a Channel State Information Reference Signal
(CSI-RS) configuration associated with the at least one SRS
resource set.
18. The UE of claim 16, wherein the configuration of the at least
one SRS resource comprises at least one of: a time-frequency
resource configuration of the at least one SRS resource, a sequence
configuration of the at least one SRS resource, an antenna port
configuration of the at least one SRS resource, a periodicity
configuration of the at least one SRS resource, a spatial relation
configuration of the at least one SRS resource, or an aperiodic
triggering state corresponding to the at least one SRS
resource.
19. The UE of claim 16, wherein the one or more programs comprises
instructions further configured to execute a step of: under a
condition that DCI which indicates activation of the active uplink
BWP comprises aperiodic SRS triggering signaling , determining at
least one SRS resource set corresponding to the active uplink BWP
as an SRS resource set which carries SRS transmission triggered by
the aperiodic SRS triggering signaling.
20. A computer-readable storage medium, storing a computer program
that, when run in a computer, causes the computer to implement
steps of: receiving, by User Equipment (UE), high-layer signaling,
wherein the high-layer signaling is for setting at least one SRS
parameter configuration respectively for each of a plurality of
uplink BWPs of the UE; determining, by the UE, an active uplink
Bandwidth Part (BWP) among the plurality of uplink BWPs;
determining, by the UE, an SRS parameter configuration
corresponding to the active uplink BWP according to the high-layer
signaling; and transmitting, by the UE, an SRS in the active uplink
BWP according to the SRS parameter configuration.
Description
[0001] This application is a continuation of U.S. application Ser.
No. 16/700,966 that was filed on Dec. 2, 2019 and is a continuation
of PCT Application No. PCT/CN2018/072502 filed on Jan. 12, 2018 and
named after "METHOD AND DEVICE FOR SRS TRANSMISSION", the contents
of which are hereby incorporated by reference in their entirety for
all purposes.
BACKGROUND
[0002] In New Radio (NR), a carrier may include multiple Bandwidth
components (BWPs). For User Equipment (UE), only one uplink BWP can
be activated for uplink transmission at a moment. Similarly, only
one downlink BWP can be activated for downlink transmission at a
moment. The specific BWP presently activated for the UE is
indicated through Downlink Control Information (DCI), and the BWP
for transmission at the UE may be dynamically switched in multiple
BWPs in a carrier. If SRS transmission may be dynamically switched
on multiple BWPs, how to configure transmission of an SRS is a
technical problem to be solved.
SUMMARY
[0003] The disclosure relates to the technical field of
communications, and particularly to a method and device for
Sounding Reference Signal (SRS) transmission.
[0004] Embodiments of the disclosure provide a method and device
for SRS transmission, which are adopted to improve the flexibility
of SRS transmission.
[0005] According to a first aspect, the embodiments of the
disclosure provide a method for SRS transmission, which may include
the following operations.
[0006] UE receives high-layer signaling. The high-layer signaling
may be for setting at least one SRS parameter configuration
respectively for each of a plurality of uplink BWPs of the UE.
[0007] UE determines an active uplink BWP among the plurality of
uplink BWPs.
[0008] The UE determines an SRS parameter configuration
corresponding to the active uplink BWP according to the high-layer
signaling.
[0009] The UE transmits an SRS in the active uplink BWP according
to the SRS parameter configuration.
[0010] According to a second aspect, the embodiments of the
disclosure provide UE, which may include one or more processors;
and memory operatively coupled to the one or more processors, the
memory storing one or more programs configured for execution by the
one or more processors. The one or more programs including
instructions for implementing a method including steps of: [0011]
receiving high-layer signaling, wherein the high-layer signaling is
used for setting at least one SRS parameter configuration
respectively for each of a plurality of uplink BWPs of the UE;
[0012] determining an active uplink BWP among the plurality of
uplink BWPs; [0013] determining an SRS parameter configuration
corresponding to the active uplink BWP according to the high-layer
signaling; and [0014] transmitting an SRS in the active uplink BWP
according to the SRS parameter configuration.
[0015] According to a fourth aspect, the embodiments of the
disclosure provide a computer-readable storage medium, which may
store a computer program configured for electronic data exchange,
the computer program enabling a computer to execute part or all of
the steps described in any method according to the first
aspect.
[0016] These aspects or other aspects of the disclosure will become
clearer and easier to understand through the following descriptions
about the embodiments.
BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to describe the technical solutions in the
embodiments of the disclosure or a background art more clearly, the
drawings to be used for descriptions about the embodiments of the
disclosure or the background art will be described below.
[0018] FIG. 1 is a schematic architecture diagram of a wireless
communication system according to an embodiment of the
disclosure.
[0019] FIG. 2 is a schematic structure diagram of UE according to
an embodiment of the disclosure.
[0020] FIG. 3 is a schematic structure diagram of a network device
according to an embodiment of the disclosure.
[0021] FIG. 4 is a schematic flowchart of an SRS transmission
method according to an embodiment of the disclosure.
[0022] FIG. 5 is a schematic structure diagram of another UE
according to an embodiment of the disclosure.
[0023] FIG. 6 is a schematic structure diagram of still another UE
according to an embodiment of the disclosure.
DETAILED DESCRIPTION
[0024] The terms used in the Detailed Description of the disclosure
are only adopted to explain specific embodiments of the disclosure
but not intended to limit the disclosure.
[0025] Terms "first", "second", "third", "fourth" and the like in
the specification, claims and drawings of the disclosure are
adopted not to describe a specific sequence but to distinguish
different objects. In addition, terms "include" and "have" and any
transformations thereof are intended to cover nonexclusive
inclusions.
[0026] FIG. 1 illustrates a wireless communication system involved
in the disclosure. The wireless communication system is not limited
to a Long Term Evolution (LTE) system, but may also be a future
evolved 5th Generation (5G) system, an NR system, a Machine to
Machine (M2M) system and the like. As shown in FIG. 1, the wireless
communication system 100 may include one or more network devices
101 and one or more UEs 102.
[0027] The network device 101 may be a base station, and the base
station may be configured to communicate with one or more UEs, and
may also be configured to communicate with one or more base
stations with part of UE functions (for example, communication
between a macro NodeB and a micro NodeB like an Access Point (AP)).
The base station may be a Base Transceiver Station (BTS) in a Time
Division Synchronous Code Division Multiple Access (TD-SCDMA)
system, or may also be an Evolutional Node B (eNB) in the LTE
system or a base station in a 5G system or in an NR system. In
addition, the base station may also be an AP, a Transmission
Reception Point (TRP), a Central Unit (CU) or another network
entity, and may include some or all functions of the above network
entities.
[0028] The UE 102 may be distributed in the whole wireless
communication system 100, which may be static or mobile. In some
embodiments of the disclosure, the UE 102 may be a mobile device, a
mobile station, a mobile unit, an M2M terminal, a wireless unit, a
remote unit, a user agent, a mobile client and the like.
[0029] The network device 101 may be configured to communicate with
the UE 102 through a wireless interface 103 under control of a
network device controller (not shown). In some embodiments, the
network device controller may be a part of a core network, or may
also be integrated into the network device 101. A network device
101 may also directly or indirectly communicate with another
network device 101 through a backhaul interface 104 (for example,
an X2 interface).
[0030] In present discussions about NR, a carrier may include
multiple BWPs. For UE 102, only one uplink BWP may be activated for
uplink transmission at a moment, while only one downlink BWP may be
activated for downlink transmission at a moment. The specific BWP
presently activated for the UE 102 is indicated by the network
device 101 through DCI, and the BWP for transmission at the UE 102
may be dynamically switched in multiple BWPs in a carrier. If SRS
transmission may be dynamically switched on multiple BWPs, how to
configure transmission of an SRS is a technical problem to be
solved.
[0031] In the disclosure, the network device 101 may set a set of
SRS parameter configurations for each BWP of the UE 102 at first;
then, under the condition that the UE 102 is dynamically switched
to a BWP for SRS transmission, the UE 102 may determine the SRS
parameter configuration corresponding to the BWP as an SRS
parameter configuration used for SRS transmission; and finally, the
UE 102 transmits an SRS on the BWP on the basis of the SRS
parameter configuration corresponding to the BWP. In such a manner,
different SRS parameter configurations may be adopted for SRS
transmission on different BWPs, and the flexibility of SRS
transmission is further improved.
[0032] It is to be noted that the wireless communication system 100
shown in FIG. 1 is only adopted to describe the technical solutions
of the disclosure more clearly but not intended to limit the
disclosure. Those of ordinary skill in the art should know that,
along with evolution of a network architecture and emergence of a
new service scenario, the technical solutions provided in the
disclosure can also be applied to similar technical problems.
[0033] Referring to FIG. 2, FIG. 2 illustrates UE 200 according to
some embodiments of the disclosure. As shown in FIG. 2, the UE 200
may include one or more UE processors 201, a memory 202, a
communication interface 203, a receiver 205, a transmitter 206, a
coupler 207, an antenna 208, a user interface 209, and an
input/output module (including an audio input/output module 210, a
key input module 211, a display 212 and the like). These components
may be connected through a bus 204 or in other manners. Connection
through the bus is determined as an example in FIG. 2.
[0034] The communication interface 203 may be configured for
communication between the UE 200 and another communication device,
for example, a network device. The network device may be a network
device 300 shown in FIG. 3. The communication interface 203 may be
an LTE (4th Generation (4G)) communication interface, or may also
be a 5G or future NR communication interface. Not limited to a
wireless communication interface, the UE 200 may also be configured
with a wired communication interface 203, for example, a Local Area
Network (LAN) interface.
[0035] The transmitter 206 may be configured to perform
transmission processing, for example, signal modulation, on a
signal output by the UE processor 201. The receiver 205 may be
configured to perform reception processing, for example, signal
demodulation, on a mobile communication signal received by the
antenna 208. In some embodiments of the disclosure, the transmitter
206 and the receiver 205 may be considered as a wireless modem. In
the UE 200, there may be one or more transmitters 206 and one or
more receivers 205. The antenna 208 may be configured to convert
electromagnetic energy in a transmission line into an
electromagnetic wave in a free space or convert the electromagnetic
wave in the free space into the electromagnetic energy in the
transmission line. The coupler 207 is configured to divide the
mobile communication signal received by the antenna 208 into
multiple paths and allocate the multiple paths of signals to
multiple receivers 205.
[0036] Besides the transmitter 206 and receiver 205 shown in FIG.
2, the UE 200 may further include other communication components,
for example, a Global Positioning System (GPS) module, a Bluetooth
module and a Wireless Fidelity (Wi-Fi) module. Not limited to the
abovementioned wireless communication signal, the UE 200 may also
support another wireless communication signal, for example, a
satellite signal and a short wave signal. Not limited to wireless
communication, the UE 200 may also be configured with a wired
network interface (for example, an LAN interface) to support wired
communication.
[0037] The input/output module may be configured to implement
interaction between the UE 200 and a user/external environment, and
may mainly include an audio input/output module 210, a key input
module 211, a display 212 and the like. The input/output module may
further include a camera, a touch screen, a sensor and the like.
Here, the input/output modules all communicate with the UE
processor 201 through the user interface 209.
[0038] The memory 202 is coupled to the UE processor 201, and is
configured to store various software programs and/or multiple sets
of instructions. The memory 202 may include a high-speed Random
Access Memory (RAM), and may also include a nonvolatile memory, for
example, one or more disk storage devices, flash memories or other
nonvolatile solid-state storage devices. The memory 202 may store
an operating system (called a system for short Hereinafter), for
example, an embedded operating system like ANDROID, IOS, WINDOWS or
LINUX. The memory 202 may further store a network communication
program, and the network communication program may be configured
for communication with one or more additional devices, one or more
UEs and one or more network devices. The memory 202 may further
store a user interface program, and the user interface program may
realistically display the content of an application program through
a graphical operation interface and receive a control operation
from the user over the disclosure program through an input control
such as a menu, a dialog box and a button.
[0039] In some embodiments of the disclosure, the memory 202 may be
configured to store an implementation program for an SRS
transmission method provided in one or more embodiments of the
disclosure on a UE 200 side. Implementation of the SRS transmission
method provided in one or more embodiments of the disclosure refers
to the following method embodiment.
[0040] In some embodiments of the disclosure, the UE processor 201
may be configured to read and execute a computer-readable
instruction. The UE processor 201 may be configured to call the
program stored in the memory 212, for example, the implementation
program for the SRS transmission method provided in one or more
embodiments of the disclosure on the UE 200 side, and execute an
instruction included in the program.
[0041] It can be understood that the UE 200 may be implemented as a
mobile device, a mobile station, a mobile unit, a wireless unit, a
remote unit, a user agent, a mobile client and the like.
[0042] It is to be noted that the UE 200 shown in FIG. 2 is only an
implementation mode of the embodiments of the disclosure and, in a
practical application, the UE 200 may further include more or fewer
components. There are no limits made here.
[0043] Referring to FIG. 3, FIG. 3 illustrates a network device 300
according to some embodiments of the disclosure. As shown in FIG.
3, the network device 300 may include one or more network device
processors 301, a memory 302, a communication interface 303, a
transmitter 305, a receiver 306, a coupler 307 and an antenna 308.
These components may be connected through a bus 304 or in another
manner. Connection through the bus is determined as an example in
FIG. 4.
[0044] The communication interface 303 may be configured for
communication between the network device 300 and another
communication device, for example, UE or another network device.
The UE may be UE 200 shown in FIG. 2. The communication interface
303 may be an LTE (4G) communication interface, or may also be a 5G
or future NR communication interface. Not limited to a wireless
communication interface, the network device 300 may also be
configured with a wired communication interface 303 to support
wired communication. For example, a backhaul link between a network
device 300 and another network device 300 may be a wired
communication connection.
[0045] The transmitter 305 may be configured to perform
transmission processing, for example, signal modulation, on a
signal output by the network device processor 301. The receiver 306
may be configured to perform reception processing, for example,
signal demodulation, on a mobile communication signal received by
the antenna 308. In some embodiments of the disclosure, the
transmitter 305 and the receiver 306 may be considered as a
wireless modem. In the network device 300, there may be one or more
transmitters 305 and one or more receivers 306. The antenna 308 may
be configured to convert electromagnetic energy in a transmission
line into an electromagnetic wave in a free space or convert the
electromagnetic wave in the free space into the electromagnetic
energy in the transmission line. The coupler 307 may be configured
to divide the mobile communication signal into multiple paths to
allocate the multiple paths of signals to multiple receivers
306.
[0046] The memory 302 is coupled to the network device processor
301, and is configured to store various software programs and/or
multiple sets of instructions. The memory 302 may include a
high-speed RAM, and may also include a nonvolatile memory, for
example, one or more disk storage devices, flash memories or other
nonvolatile solid-state storage devices. The memory 302 may store
an operating system (called a system for short hereinafter), for
example, an embedded operating system like uCOS, VxWorks and
RTLinux. The memory 302 may further store a network communication
program, and the network communication program may be configured
for communication with one or more additional devices, one or more
terminal devices and one or more network devices.
[0047] The network device processor 301 may be configured to manage
a wireless channel, make a call, establish and remove a
communication link, and provide cell handover control for a user in
a present control region, and the like. The network device
processor 301 may include an Administration Module/Communication
Module (AM/CM, a center configured for voice path switching and
information exchange), a Basic Module (BM) (configured to realize
call processing, signaling processing, radio resource management,
radio link management and circuit maintenance), a Transcoder and
SubMultiplexer (TCSM, configured to realize multiplexing,
demultiplexing and transcoding functions) and the like.
[0048] In the embodiments of the disclosure, the memory 302 may be
configured to store an implementation program for an SRS
transmission method provided in one or more embodiments of the
disclosure on a network device 300 side. Implementation of the SRS
transmission method provided in one or more embodiments of the
disclosure refers to the following method embodiments.
[0049] In the embodiments of the disclosure, the network device
processor 301 may be configured to read and execute a
computer-readable instruction. The network device processor 301 may
be configured to call the program stored in the memory 302, for
example, the implementation program for the SRS transmission method
provided in one or more embodiments of the disclosure on the
network device 300 side, and execute an instruction included in the
program.
[0050] It can be understood that the network device 300 may be
implemented as a BTS, a wireless transceiver, a Basic Service Set
(BSS), an Extended Service Set (ESS), a NodeB, an eNodeB, an AP, a
TRP or the like.
[0051] It is to be noted that the network device 300 shown in FIG.
3 is only an implementation mode of the embodiments of the
disclosure and, during a practical application, the network device
300 may further include more or fewer components. There are no
limits made here.
[0052] On the basis of the embodiments corresponding to the
wireless communication system 100, the UE 200 and the network
device 300 respectively, an embodiment of the disclosure provides
an SRS transmission method.
[0053] Referring to FIG. 4, FIG. 4 illustrates a flowchart of an
SRS transmission method according to an embodiment of the
disclosure. The method includes the following operations.
[0054] In operation 401, UE determines an uplink BWP which is
presently activated.
[0055] In an embodiment of the disclosure, the operation 401 is
executed under the condition that the UE is dynamically switched to
a BWP for SRS transmission.
[0056] In an embodiment of the disclosure, the operation 401 may be
implemented in a manner as follows.
[0057] The UE determines the active uplink BWP according to BWP
indication information. The latest received DCI for scheduling
uplink transmission includes the BWP indication information.
[0058] Specifically, a network device pre-sets multiple BWPs for
the UE through high-layer signaling, and then indicates through the
BWP indication information in the DCI that one BWP in the multiple
BWPs is activated for transmission. Here, the high-layer signaling
may include Radio Resource Control (RRC) signaling, Medium Access
Control (MAC) signaling and the like.
[0059] For example, a hypothesis is made that the network device
pre-sets four BWPs and bandwidths corresponding to the four BWPs
for the UE through RRC signaling and then the network device
indicates the activated BWP through the DCI, the DCI including 2
bit BWP indication information. For example, assuming that the four
BWPs are BWP1, BWP2, BWP3 and BWP4 and the 2 bit BWP indication
information is 00, the active uplink BWP is BWP1. If the 2 bit BWP
indication information is 11, the active uplink BWP is BWP4, and so
on.
[0060] In an embodiment of the disclosure, the DCI may be
configured to trigger aperiodic SRS transmission on the active
uplink BWP.
[0061] In the operation 402, the UE determines an SRS parameter
configuration corresponding to the active uplink BWP.
[0062] In an embodiment of the disclosure, the method further
includes the following operation.
[0063] The UE receives high-layer signaling from a network device.
The high-layer signaling is for setting an SRS parameter
configuration respectively for each uplink BWP of the UE.
[0064] A specific implementation mode of the operation 402 includes
that: the UE determines the SRS parameter configuration
corresponding to the active uplink BWP according to the high-layer
signaling.
[0065] Here, the high-layer signaling may include RRC signaling,
MAC signaling and the like.
[0066] The network device pre-sets the bandwidths (i.e., Physical
Resource Blocks (PRBs) occupied by the four BWPs respectively)
corresponding to the four BWPs for the UE through high-layer
signaling, and then sets SRS parameter configurations for the four
BWPs through another high-layer signaling respectively. Or, the
network device pre-sets the bandwidths (i.e., the PRBs occupied by
the four BWPs respectively) corresponding to the four BWPs for the
UE and sets the SRS parameter configurations for the four BWPs
respectively through the same high-layer signaling.
[0067] For example, the four BWPs are BWP1, BWP2, BWP3 and BWP4. A
hypothesis is made that the network device sets an SRS parameter
configuration 1 for BWP1 through high-layer signaling, the network
device sets an SRS parameter configuration 2 for BWP2, the network
device sets an SRS parameter configuration 3 for BWP3 and the
network device sets an SRS parameter configuration 4 for BWP4.
Assuming that the active uplink BWP is BWP1, the UE may obtain
according to the high-layer signaling that the SRS parameter
configuration corresponding to BWP1 is the SRS parameter
configuration 1, and so on.
[0068] In the operation 403, the UE transmits an SRS in the active
uplink BWP according to the SRS parameter configuration.
[0069] In an embodiment of the disclosure, the SRS parameter
configuration includes a configuration of at least one SRS resource
set in the active uplink BWP and/or a configuration of at least one
SRS resource in the active uplink BWP.
[0070] In an embodiment of the disclosure, the configuration of the
SRS resource set includes at least one of: a power control
parameter configuration of the SRS resource set, a usage
configuration of the SRS resource set, an aperiodic triggering
state corresponding to the SRS resource set, or a Channel State
Information Reference Signal (CSI-RS) resource configuration
associated with the SRS resource set.
[0071] Here, the power control parameter configuration of the SRS
resource set includes at least one of: an open loop power control
parameter configuration, a closed loop power control parameter
configuration, or a path loss parameter configuration.
[0072] Here, the usage configuration of the SRS resource set is for
indicating a usage corresponding to the SRS resource set. The usage
corresponding to the SRS resource set includes at least one of:
indication of beam management, codebook-based transmission,
non-codebook-based transmission, antenna switching and the
like.
[0073] Here, the aperiodic triggering state corresponding to the
SRS resource set represents that aperiodic transmission of the SRS
resource set is needed to be triggered. Specifically, in case that
SRS triggering signaling in the DCI indicates an aperiodic
triggering state, the UE is required to perform aperiodic SRS
transmission on one or more SRS resource sets corresponding to the
aperiodic triggering state.
[0074] In an embodiment of the disclosure, the configuration of the
SRS resource includes at least one of: a time-frequency resource
configuration of the SRS resource, a sequence configuration of the
SRS resource, an antenna port configuration of the SRS resource, a
periodicity configuration of the SRS resource, a spatial relation
configuration of the SRS resource, or an aperiodic triggering state
corresponding to the SRS resource.
[0075] In an embodiment of the disclosure, the method further
includes the following operation:
[0076] under the condition that the DCI indicating activation of
the active uplink BWP includes aperiodic SRS triggering signaling,
the UE determines at least one SRS resource set corresponding to
the active uplink BWP as an SRS resource set which carries SRS
transmission triggered by the aperiodic SRS triggering
signaling.
[0077] For example, there is made such a hypothesis that the DCI
indicating activation of the active uplink BWP is DCI-1 and DCI-1
includes the aperiodic SRS triggering signaling. Assuming the SRS
resource set corresponding to the active uplink BWP is an SRS
resource set 1 and SRS transmission triggered by the aperiodic SRS
triggering signaling is SRS transmission 1, the UE determines the
SRS resource set 1 as an SRS resource set which carries SRS
transmission 1. For another example, there is made such a
hypothesis that the DCI indicating activation of the active uplink
BWP is DCI-1 and DCI-1 includes the aperiodic SRS triggering
signaling. Assuming the SRS resource set corresponding to the
active uplink BWP is the SRS resource set 1 and an SRS resource set
2 and SRS transmission triggered by the aperiodic SRS triggering
signaling is SRS transmission 1, the UE determines the SRS resource
set 1 and the SRS resource set 2 or one of them as the SRS resource
set which carries SRS transmission 1.
[0078] In an embodiment of the disclosure, a specific
implementation mode of the operation that the UE determines the at
least one SRS resource set corresponding to the active uplink BWP
as the SRS resource set which carries SRS transmission triggered by
the aperiodic SRS triggering signaling includes the following
operation:
[0079] the UE determines an SRS resource set indicated by the
aperiodic SRS triggering signaling as the SRS resource set which
carries SRS transmission triggered by the aperiodic SRS triggering
signaling.
[0080] Specifically, assuming the DCI includes both of the BWP
indication information and the aperiodic SRS triggering signaling
and the active uplink BWP indicated by the BWP indication
information includes at least one SRS resource set, the UE
determines the SRS resource set indicated by the aperiodic SRS
triggering signaling in the at least one SRS resource set as the
SRS resource set which carries SRS transmission triggered by the
aperiodic SRS triggering signaling.
[0081] For example, assuming the active uplink BWP indicated by the
BWP indication information includes three SRS resource sets, the
DCI sent to the UE by the network device includes 2 bit aperiodic
triggering signaling and each of three state in the 2 bit aperiodic
triggering signaling respectively corresponds to one SRS resource
set in the three SRS resource sets, the UE may determine the
corresponding SRS resource set according to a state indicated by
the 2 bit aperiodic triggering signaling and then configure the
determined SRS resource set to carry SRS transmission triggered by
the aperiodic SRS triggering signaling. For example, there is made
such a hypothesis that 00 corresponds to an SRS resource set 1, 01
corresponds to an SRS resource set 2, 10 corresponds to an SRS
resource set 3 and 11 corresponds to no triggering of an aperiodic
SRS. Assuming the 2 bit aperiodic SRS triggering signaling in the
DCI sent to the UE by the network device is 11, then the UE
determines the SRS resource set 3 as the SRS resource set which
carries SRS transmission triggered by the 2 bit aperiodic SRS
triggering signaling according to the 2 bit aperiodic SRS
triggering signaling.
[0082] For another example, the UE starts periodic SRS transmission
in BWP1 according to the SRS resource configuration corresponding
to BWP1, and the UE, after receiving the DCI including the BWP
indication information, is required to be switched to BWP2
indicated by the BWP indication information and then performs
periodic SRS transmission according to the SRS resource
configuration corresponding to BWP2. The SRS resource
configurations corresponding to BWP1 and BWP2 are pre-configured by
the network device through the high-layer signaling respectively,
and SRS resources corresponding to BWP1 and BWP2 may have different
periods and time slot offsets.
[0083] In an embodiment of the disclosure, the SRS parameter
configuration includes the power control parameter configuration of
the SRS resource set, and a specific implementation mode of the
operation that the UE transmits the SRS in the active uplink BWP
according to the SRS parameter configuration includes the following
operation:
[0084] the UE determines transmitted power for SRS transmission on
the SRS resource set according to the power control parameter
configuration of the SRS resource set; the UE transmits the SRS in
the active uplink BWP according to the determined transmitted
power.
[0085] For example, assuming the power control parameter
configuration of the SRS resource set corresponding to the active
uplink BWP is x and the transmitted power determined by the UE
according to the configuration is P, the UE determines that the
transmitted power for SRS transmission on the SRS resource set in
the active uplink BWP is P.
[0086] In an embodiment of the disclosure, the SRS parameter
configuration includes the usage configuration of the SRS resource
set, and a specific implementation mode of the operation that the
UE transmits the SRS in the active uplink BWP according to the SRS
parameter configuration includes the following operation:
[0087] the UE determines an antenna port, a transmission beam or an
SRS resource number for SRS transmission on the SRS resource set
according to the usage configuration of the SRS resource set; the
UE transmits the SRS in the active uplink BWP according to the
determined antenna port, transmission beam or SRS resource
number.
[0088] Specifically, assuming the usage configuration of the SRS
resource set is beam management, the UE determines that the antenna
port for SRS transmission is 1, 2 or 4, and in addition, different
SRS resources in the SRS resource set may adopt different beams to
transmit the SRS.
[0089] Assuming the usage configuration of the SRS resource set is
codebook transmission, the UE determines that the antenna port for
SRS transmission is 1, 2 or 4, and in addition, the SRS resource
set includes at most two SRS resources.
[0090] Assuming the usage configuration of the SRS resource set is
non-codebook transmission, the UE determines that the antenna port
for SRS transmission is 1, and in addition, the SRS resource set
includes at most two SRS resources.
[0091] Assuming the usage configuration of the SRS resource set is
antenna switching, the UE determines that the antenna port for SRS
transmission is 1 or 2, the SRS resource set includes at most two
SRS resources, and different SRS resources correspond to different
antenna ports.
[0092] In an embodiment of the disclosure, the SRS parameter
configuration includes the aperiodic triggering state corresponding
to the SRS resource set, and a specific implementation mode of the
operation that the UE transmits the SRS in the active uplink BWP
according to the SRS parameter configuration includes the following
operation:
[0093] the UE determines the SRS resource set for aperiodic SRS
transmission in the active uplink BWP according to the aperiodic
triggering state corresponding to the SRS resource set and the
aperiodic SRS triggering signaling. The UE transmits the SRS in the
active uplink BWP according to the determined SRS resource set.
[0094] For example, assuming the network device pre-sets three SRS
resource sets for the UE through high-layer signaling, an aperiodic
triggering state corresponding to the SRS resource set 1 is 00, an
aperiodic triggering state corresponding to the SRS resource set 2
is 01 and an aperiodic triggering state corresponding to the SRS
resource set 3 is 10, the UE determines a target SRS resource set
for aperiodic SRS transmission in the active uplink BWP from the
three sets according to the state indicated by the aperiodic SRS
triggering signaling. For example, if the state indicated by the
aperiodic SRS triggering signaling is 00, then the target SRS
resource set is the SRS resource set 1. For another example, if the
state indicated by the aperiodic SRS triggering signaling is 10,
then the target SRS resource set is the SRS resource set 3, and so
on.
[0095] In an embodiment of the disclosure, the SRS parameter
configuration includes the CSI-RS resource configuration associated
with the SRS resource set, and a specific implementation mode of
the operation that the UE transmits the SRS in the active uplink
BWP according to the SRS parameter configuration includes the
following operation:
[0096] the UE determines a beam and/or precoding matrix for SRS
transmission on the SRS resource set according to the CSI-RS
resource configuration associated with the SRS resource set; the UE
transmits the SRS in the active uplink BWP according to the
determined beam and/or precoding matrix.
[0097] The UE obtains downlink channel information according to the
CSI-RS resource configuration, and then the UE calculates the beam
and/or precoding matrix for SRS transmission on the basis of the
obtained downlink channel information and channel reciprocity, and
finally uses the calculated beam and/or precoding matrix for SRS
transmission on the SRS resource set in the active uplink BWP.
[0098] In an embodiment of the disclosure, the SRS parameter
configuration includes the aperiodic triggering state corresponding
to the SRS resource, and a specific implementation mode of the
operation that the UE transmits the SRS in the active uplink BWP
according to the SRS parameter configuration includes the following
operation:
[0099] the UE determines the SRS resource for aperiodic SRS
transmission in the active uplink BWP according to the aperiodic
triggering state corresponding to the SRS resource and the
aperiodic SRS triggering signaling; the UE transmits the SRS in the
active uplink BWP according to the determined SRS resource.
[0100] For example, if the network device pre-sets five SRS
resources for the UE, an aperiodic triggering state corresponding
to the SRS resource 1 and the SRS resource 3 is 00, an aperiodic
triggering state corresponding to the SRS resource 2 and the SRS
resource 4 is 01 and an aperiodic triggering state corresponding to
the SRS resource 5 is 10, then the UE determines a target SRS
resource for aperiodic SRS transmission in the active uplink BWP
from the five SRS resources according to the state indicated by the
aperiodic SRS triggering signaling. For example, if the state
indicated by the aperiodic SRS triggering signaling is 00, then the
target SRS resource set is the SRS resource 1 and the SRS resource
3. If the state indicated by the aperiodic SRS triggering signaling
is 10, the target SRS resource is the SRS resource 5, and so
on.
[0101] In an embodiment of the disclosure, the SRS parameter
configuration includes the time-frequency resource configuration of
the SRS resource, and a specific implementation mode of the
operation that the UE transmits the SRS in the active uplink BWP
according to the SRS parameter configuration includes the following
operation:
[0102] the UE determines a bandwidth for SRS transmission in the
SRS resource according to the time-frequency resource configuration
of the SRS resource and a bandwidth of the active uplink BWP; the
UE transmits the SRS in the active uplink BWP according to the
determined bandwidth.
[0103] The time-frequency resource configuration of the SRS
resource includes an SRS bandwidth configuration and/or SRS
frequency-domain frequency hopping configuration of the SRS
resource. The UE determines a maximum transmission bandwidth for
SRS transmission in the SRS resource according to the bandwidth of
the active uplink BWP. Within a range of the maximum transmission
bandwidth, the UE determines the bandwidth for SRS transmission in
the SRS resource according to the SRS bandwidth configuration or
the SRS frequency-domain frequency hopping configuration, and then
transmits the SRS in the active uplink BWP according to the
determined bandwidth.
[0104] In an embodiment of the disclosure, the SRS parameter
configuration includes a spatial relation parameter of the SRS
resource, and a specific implementation mode of the operation that
the UE transmits the SRS in the active uplink BWP according to the
SRS parameter configuration includes the following operation:
[0105] the UE determines a target SRS resource, a CSI-RS resource
or a Synchronization Signal Block (SSB) spatially correlated with
the SRS resource according to the spatial relation parameter of the
SRS resource; [0106] the UE determines a transmission beam of the
SRS resource according to the target SRS resource, the CSI-RS
resource or the SSB; and [0107] the UE transmits the SRS in the
active uplink BWP according to the determined transmission
beam.
[0108] Furthermore, a specific implementation mode of the operation
that the UE determines the transmission beam of the SRS resource
according to the target SRS resource, the CSI-RS resource or the
SSB includes the following operation: [0109] the UE determines a
transmission beam of the target SRS resource as the transmission
beam of the SRS resource; or, [0110] the UE determines a
transmission beam of the CSI-RS resource as the transmission beam
of the SRS resource; or, [0111] the UE determines a transmission
beam of the SSB as the transmission beam of the SRS resource.
[0112] In an embodiment of the disclosure, the SRS parameter
configuration includes the sequence configuration of the SRS
resource, and a specific implementation mode of the operation that
the UE transmits the SRS in the active uplink BWP according to the
SRS parameter configuration includes the following operation:
[0113] the UE determines an SRS sequence for SRS transmission on
the SRS resource according to the sequence configuration of the SRS
resource; the UE transmits the SRS in the active uplink BWP
according to the determined SRS sequence.
[0114] In an embodiment of the disclosure, the SRS parameter
configuration includes the periodicity configuration of the SRS
resource, and a specific implementation mode of the operation that
the UE transmits the SRS in the active uplink BWP according to the
SRS parameter configuration includes the following operation:
[0115] the UE determines a periodicity operation for SRS
transmission on the SRS resource according to the periodicity
configuration of the SRS resource. The UE transmits the SRS in the
active uplink BWP according to the determined periodicity
operation.
[0116] Assuming the periodicity configuration of the SRS resource
is periodic, then the UE periodically transmits the SRS in the
active uplink BWP. If the periodicity configuration of the SRS
resource is quasi-continuous, then the UE quasi-continuously
transmits the SRS in the active uplink BWP. If the periodicity
configuration of the SRS resource is aperiodic, then the UE
aperiodically transmits the SRS in the active uplink BWP.
[0117] It can be seen that, in the disclosure, the network device
may set a set of SRS parameter configurations for each BWP of the
UE; then, under the condition that the UE is dynamically switched
to a BWP for SRS transmission, the UE may determine the SRS
parameter configuration corresponding to the BWP as the SRS
parameter configuration for SRS transmission; and finally, the UE
transmits the SRS on the BWP on the basis of the SRS parameter
configuration corresponding to the BWP. In such a manner, different
SRS parameter configurations may be adopted for SRS transmission on
different BWPs, and SRS transmission flexibility is further
improved.
[0118] It is to be noted that the examples in the disclosure are
only adopted for explanation but should not form any limit.
[0119] Referring to FIG. 5, FIG. 5 illustrates UE 500 according to
an embodiment of the disclosure. The UE 500 includes one or more
processors, one or more memories, one or more transceivers and one
or more programs.
[0120] The one or more programs are stored in the memory and are
configured to be executed by the one or more processors.
[0121] The programs include instructions configured to execute the
following steps: [0122] an uplink BWP which is presently activated
is determined. [0123] an SRS parameter configuration corresponding
to the active uplink BWP is determined; and [0124] an SRS is
transmitted in the active uplink BWP according to the SRS parameter
configuration.
[0125] In an embodiment of the disclosure, in terms of determining
the active uplink BWP, the programs include an instruction
configured to execute the following step:
[0126] the active uplink BWP is determined according to BWP
indication information, and the latest received DCI for scheduling
uplink transmission includes the BWP indication information.
[0127] In an embodiment of the disclosure, the programs include an
instruction further configured to execute the following step:
[0128] high-layer signaling sent by a network device is received,
the high-layer signaling being used for setting a corresponding SRS
parameter configuration for each uplink BWP of the UE.
[0129] In terms of determining the SRS parameter configuration
corresponding to the active uplink BWP, the programs include an
instruction configured to execute the following step:
[0130] the SRS parameter configuration corresponding to the active
uplink BWP is determined according to the high-layer signaling.
[0131] In an embodiment of the disclosure, the SRS parameter
configuration includes a configuration of at least one SRS resource
set in the active uplink BWP and/or a configuration of at least one
SRS resource in the active uplink BWP.
[0132] In an embodiment of the disclosure, the configuration of the
SRS resource set includes at least one of: a power control
parameter configuration of the SRS resource set, a usage
configuration of the SRS resource set, an aperiodic triggering
state corresponding to the SRS resource set, or a CSI-RS resource
configuration associated with the SRS resource set.
[0133] In an embodiment of the disclosure, the configuration of the
SRS resource includes at least one of: a time-frequency resource
configuration of the SRS resource, a sequence configuration of the
SRS resource, an antenna port configuration of the SRS resource, a
period configuration of the SRS resource, a spatial relation
configuration of the SRS resource, or an aperiodic triggering state
corresponding to the SRS resource.
[0134] In an embodiment of the disclosure, the programs include an
instruction further configured to execute the following step:
[0135] under the condition that the DCI indicating activation of
the active uplink BWP includes aperiodic SRS triggering signaling,
at least one SRS resource set corresponding to the active uplink
BWP is determined as an SRS resource set which carries SRS
transmission triggered by the aperiodic SRS triggering
signaling.
[0136] In an embodiment of the disclosure, in terms of determining
at least one SRS resource set corresponding to the active uplink
BWP as the SRS resource set which carries SRS transmission
triggered by the aperiodic SRS triggering signaling, the programs
include an instruction configured to execute the following
step:
[0137] an SRS resource set indicated by the aperiodic SRS
triggering signaling is determined as the SRS resource set which
carries SRS transmission triggered by the aperiodic SRS triggering
signaling.
[0138] In an embodiment of the disclosure, the SRS parameter
configuration includes the power control parameter configuration of
the SRS resource set; and in terms of transmitting the SRS in the
active uplink BWP according to the SRS parameter configuration, the
programs include instructions configured to execute the following
steps: [0139] the transmitted power for SRS transmission on the SRS
resource set is determined according to the power control parameter
configuration of the SRS resource set; and [0140] the SRS is
transmitted in the active uplink BWP according to the determined
transmitted power.
[0141] In an embodiment of the disclosure, the SRS parameter
configuration includes the usage configuration of the SRS resource
set; and in terms of transmitting the SRS in the active uplink BWP
according to the SRS parameter configuration, the programs include
instructions configured to execute the following steps: [0142] an
antenna port, a transmission beam or an SRS resource number for SRS
transmission on the SRS resource set is determined according to the
usage configuration of the SRS resource set; and [0143] the SRS is
transmitted in the active uplink BWP according to the determined
antenna port, transmission beam or SRS resource number.
[0144] In an embodiment of the disclosure, the SRS parameter
configuration includes the aperiodic triggering state corresponding
to the SRS resource set; and in terms of transmitting the SRS in
the active uplink BWP according to the SRS parameter configuration,
the programs include instructions configured to execute the
following steps: [0145] an SRS resource set for aperiodic SRS
transmission in the active uplink BWP is determined according to
the aperiodic triggering state corresponding to the SRS resource
set and the aperiodic SRS triggering signaling; and [0146] the SRS
is transmitted in the active uplink BWP according to the determined
SRS resource set.
[0147] In an embodiment of the disclosure, the SRS parameter
configuration includes the CSI-RS resource configuration associated
with the SRS resource set; and in terms of transmitting the SRS in
the active uplink BWP according to the SRS parameter configuration,
the programs include instructions configured to execute the
following steps: [0148] a beam and/or precoding matrix for SRS
transmission on the SRS resource set are/is determined according to
the CSI-RS resource configuration associated with the SRS resource
set; and [0149] the SRS is transmitted in the active uplink BWP
according to the determined beam and/or precoding matrix.
[0150] In an embodiment of the disclosure, the SRS parameter
configuration includes the aperiodic triggering state corresponding
to the SRS resource; and in terms of transmitting the SRS in the
active uplink BWP according to the SRS parameter configuration, the
programs include instructions configured to execute the following
steps: [0151] an SRS resource for aperiodic SRS transmission in the
active uplink BWP is determined according to the aperiodic
triggering state corresponding to the SRS resource and the
aperiodic SRS triggering signaling; [0152] the SRS is transmitted
in the active uplink BWP according to the determined SRS
resource.
[0153] In an embodiment of the disclosure, the SRS parameter
configuration includes the time-frequency resource configuration of
the SRS resource; and in terms of transmitting the SRS in the
active uplink BWP according to the SRS parameter configuration, the
programs include instructions configured to execute the following
steps: [0154] a bandwidth for SRS transmission on the SRS resource
is determined according to the time-frequency resource
configuration of the SRS resource and a bandwidth of the active
uplink BWP; and [0155] the SRS is transmitted in the active uplink
BWP according to the determined bandwidth.
[0156] In an embodiment of the disclosure, the SRS parameter
configuration includes a spatial relation parameter of the SRS
resource; and in terms of transmitting the SRS in the active uplink
BWP according to the SRS parameter configuration, the programs
include instructions configured to execute the following steps:
[0157] a target SRS resource, a CSI-RS resource or an SSB spatially
correlated with the SRS resource is determined according to the
spatial relation parameter of the SRS resource; [0158] a
transmission beam of the SRS resource is determined according to
the target SRS resource, the CSI-RS resource or the SSB; and [0159]
the SRS is transmitted in the active uplink BWP according to the
determined transmission beam.
[0160] In an embodiment of the disclosure, the SRS parameter
configuration includes the sequence configuration of the SRS
resource; and in terms of transmitting the SRS in the active uplink
BWP according to the SRS parameter configuration, the programs
include instructions configured to execute the following steps:
[0161] an SRS sequence for SRS transmission on the SRS resource is
determined according to the sequence configuration of the SRS
resource; and [0162] the SRS is transmitted in the active uplink
BWP according to the determined SRS sequence.
[0163] In an embodiment of the disclosure, the SRS parameter
configuration includes the periodicity configuration of the SRS
resource; and in terms of transmitting the SRS in the active uplink
BWP according to the SRS parameter configuration, the programs
include instructions configured to execute the following steps:
[0164] a periodicity operation for SRS transmission on the SRS
resource is determined according to the periodicity configuration
of the SRS resource; and [0165] the SRS is transmitted in the
active uplink BWP according to the determined periodicity
operation.
[0166] It is to be noted that specific implementation modes of the
contents of the embodiment may refer to the abovementioned method
and will not be elaborated herein.
[0167] Referring to FIG. 6, FIG. 6 illustrates UE 600 according to
an embodiment of the disclosure. The UE 600 includes a processing
unit 601, a communication unit 602 and a storage unit 603.
[0168] The processing unit 601 is configured to determine an uplink
BWP which is presently activated.
[0169] The processing unit 601 is further configured to determine
an SRS parameter configuration corresponding to the active uplink
BWP.
[0170] The processing unit 601 is further configured to transmit an
SRS in the active uplink BWP through the communication unit 602
according to the SRS parameter configuration.
[0171] In an embodiment of the disclosure, in terms of determining
the active uplink BWP, the processing unit 601 is configured
to:
[0172] determine the active uplink BWP according to BWP indication
information; here, the latest received DCI for scheduling uplink
transmission includes the BWP indication information.
[0173] In an embodiment of the disclosure, the processing unit 601
is further configured to receive high-layer signaling sent by a
network device through the communication unit 602, the high-layer
signaling being used to set an SRS parameter configuration
respectively for each uplink BWP of the UE.
[0174] In terms of determining the SRS parameter configuration
corresponding to the active uplink BWP, the processing unit 601 is
configured to determine the SRS parameter configuration
corresponding to the active uplink BWP according to the high-layer
signaling.
[0175] In an embodiment of the disclosure, the SRS parameter
configuration includes a configuration of at least one SRS resource
set in the active uplink BWP and/or a configuration of at least one
SRS resource in the active uplink BWP.
[0176] In an embodiment of the disclosure, the configuration of the
SRS resource set includes at least one of: a power control
parameter configuration of the SRS resource set, a usage
configuration of the SRS resource set, an aperiodic triggering
state corresponding to the SRS resource set, or a CSI-RS resource
configuration associated with the SRS resource set.
[0177] In an embodiment of the disclosure, the configuration of the
SRS resource includes at least one of: a time-frequency resource
configuration of the SRS resource, a sequence configuration of the
SRS resource, an antenna port configuration of the SRS resource, a
period configuration of the SRS resource, a spatial relation
configuration of the SRS resource, or an aperiodic triggering state
corresponding to the SRS resource.
[0178] In an embodiment of the disclosure, the processing unit 601
is further configured to, under the condition that the DCI
indicating activation of the active uplink BWP includes aperiodic
SRS triggering signaling, determine at least one SRS resource set
corresponding to the active uplink BWP as an SRS resource set which
carries SRS transmission triggered by the aperiodic SRS triggering
signaling.
[0179] In an embodiment of the disclosure, in terms of determining
the at least one SRS resource set corresponding to the active
uplink BWP as the SRS resource set which carries SRS transmission
triggered by the aperiodic SRS triggering signaling, the processing
unit 601 is configured to determine an SRS resource set indicated
by the aperiodic SRS triggering signaling as the SRS resource set
which carries SRS transmission triggered by the aperiodic SRS
triggering signaling.
[0180] In an embodiment of the disclosure, the SRS parameter
configuration includes the power control parameter configuration of
the SRS resource set; and in terms of transmitting the SRS in the
active uplink BWP according to the SRS parameter configuration, the
processing unit 601 is configured to: [0181] determine transmitted
power for SRS transmission on the SRS resource set according to the
power control parameter configuration of the SRS resource set; and
[0182] transmit the SRS in the active uplink BWP according to the
determined transmitted power.
[0183] In an embodiment of the disclosure, the SRS parameter
configuration includes the usage configuration of the SRS resource
set; and in terms of transmitting the SRS in the active uplink BWP
according to the SRS parameter configuration, the processing unit
601 is configured to: [0184] determine an antenna port, a
transmission beam or an SRS resource number for SRS transmission on
the SRS resource set according to the usage configuration of the
SRS resource set; and [0185] transmit the SRS in the active uplink
BWP according to the determined antenna port, transmission beam or
SRS resource number.
[0186] In an embodiment of the disclosure, the SRS parameter
configuration includes the aperiodic triggering state corresponding
to the SRS resource set; and in terms of transmitting the SRS in
the active uplink BWP according to the SRS parameter configuration,
the processing unit 601 is configured to: [0187] determine an SRS
resource set for aperiodic SRS transmission in the active uplink
BWP according to the aperiodic triggering state corresponding to
the SRS resource set and the aperiodic SRS triggering signaling;
and [0188] transmit the SRS in the active uplink BWP according to
the determined SRS resource set.
[0189] In an embodiment of the disclosure, the SRS parameter
configuration includes the CSI-RS resource configuration associated
with the SRS resource set; and in terms of transmitting the SRS in
the active uplink BWP according to the SRS parameter configuration,
the processing unit 601 is configured to: [0190] determine a beam
and/or precoding matrix for SRS transmission on the SRS resource
set determined according to the CSI-RS resource configuration
associated with the SRS resource set, and [0191] transmit the SRS
in the active uplink BWP according to the determined beam and/or
precoding matrix.
[0192] In an embodiment of the disclosure, the SRS parameter
configuration includes the aperiodic triggering state corresponding
to the SRS resource; and in terms of transmitting the SRS in the
active uplink BWP according to the SRS parameter configuration, the
processing unit 601 is configured to: [0193] determine an SRS
resource for aperiodic SRS transmission in the active uplink BWP
according to the aperiodic triggering state corresponding to the
SRS resource and the aperiodic SRS triggering signaling, and [0194]
transmit the SRS in the active uplink BWP according to the
determined SRS resource.
[0195] In an embodiment of the disclosure, the SRS parameter
configuration includes the time-frequency resource configuration of
the SRS resource, and in terms of transmitting the SRS in the
active uplink BWP according to the SRS parameter configuration, the
processing unit 601 is configured to: [0196] determine a bandwidth
for SRS transmission on the SRS resource according to the
time-frequency resource configuration of the SRS resource and a
bandwidth of the active uplink BWP, and [0197] transmit the SRS in
the active uplink BWP according to the determined bandwidth.
[0198] In an embodiment of the disclosure, the SRS parameter
configuration includes a spatial relation parameter of the SRS
resource, and in terms of transmitting the SRS in the active uplink
BWP according to the SRS parameter configuration, the processing
unit 601 is configured to: [0199] determine a target SRS resource,
a CSI-RS resource or an SSB spatially correlated with the SRS
resource according to the spatial relation parameter of the SRS
resource, [0200] determine a transmission beam of the SRS resource
is determined according to the target SRS resource, the CSI-RS
resource or the SSB, and [0201] transmit the SRS in the active
uplink BWP according to the determined transmission beam.
[0202] In an embodiment of the disclosure, the SRS parameter
configuration includes the sequence configuration of the SRS
resource, and in terms of transmitting the SRS in the active uplink
BWP according to the SRS parameter configuration, the processing
unit 601 is configured to: [0203] determine an SRS sequence for SRS
transmission on the SRS resource according to the sequence
configuration of the SRS resource, and [0204] transmit the SRS in
the active uplink BWP according to the determined SRS sequence.
[0205] In an embodiment of the disclosure, the SRS parameter
configuration includes the periodicity configuration of the SRS
resource, and in terms of transmitting the SRS in the active uplink
BWP according to the SRS parameter configuration, the processing
unit 601 is configured to: [0206] determine a periodicity operation
for SRS transmission on the SRS resource according to the
periodicity configuration of the SRS resource, and [0207] transmit
the SRS in the active uplink BWP according to the determined
periodicity operation.
[0208] Here, the processing unit 601 may be a processor or a
controller (which may be, for example, a Central Processing Unit
(CPU), a universal processor, a Digital Signal Processor (DSP), an
Application-Specific Integrated Circuit (ASIC), a Field
Programmable Gate Array (FPGA) or another programmable logical
device, transistor logical device, hardware component or any
combination thereof the processing unit 601 may implement or
execute various exemplary logical blocks, modules and circuits
described in combination with the contents disclosed in the
disclosure. The processor may also be a combination incapable of
realizing a calculation function (for example, a combination
including one or more microprocessors, or a combination of a DSP
and a microprocessor). The communication unit 602 may be a
transceiver, a transceiver circuit, a radio frequency chip, a
communication interface and the like. The storage unit 603 may be a
memory.
[0209] When the processing unit 601 is a processor, the
communication unit 602 is a communication interface and the storage
unit 603 is a memory, the UE involved in the embodiment of the
disclosure may be the UE shown in FIG. 5.
[0210] An embodiment of the disclosure also provides a
computer-readable storage medium, which stores a computer program
configured for electronic data exchange, the computer program
enabling a computer to execute part of or all of the steps executed
by the first network device in the abovementioned methods.
[0211] An embodiment of the disclosure also provides a computer
program product. The computer program product includes a
non-transitory computer-readable storage medium storing a computer
program. The computer program may be operated to enable a computer
to execute part of or all of the steps executed by the first
network device in the abovementioned methods. The computer program
product may be a software installation package.
[0212] It can be seen that, in the disclosure, a network device may
set a set of SRS parameter configurations for each BWP of the UE;
then, under the condition that the UE is dynamically switched to a
certain BWP for SRS transmission, the UE may determine the SRS
parameter configuration corresponding to the BWP as the SRS
parameter configuration for SRS transmission; and finally, the UE
transmits the SRS on the BWP on the basis of the SRS parameter
configuration corresponding to the BWP. In such a manner, different
SRS parameter configurations may be adopted for SRS transmission on
different BWPs, and SRS transmission flexibility is further
improved.
[0213] The steps of the method or algorithm described in the
embodiments of the disclosure may be implemented in a hardware
manner, or may also be implemented in a manner of executing, by a
processor, software. A software instruction may consist of a
corresponding software module, and the software module may be
stored in a RAM, a flash memory, a Read Only Memory (ROM), an
Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM),
a register, a hard disk, a mobile hard disk, a Compact Disc-ROM
(CD-ROM) or a storage medium in any other form well known in the
field. An exemplary storage medium is coupled to the processor,
thereby enabling the processor to read information from the storage
medium and write information into the storage medium. Of course,
the storage medium may also be a component of the processor. The
processor and the storage medium may be located in an ASIC. In
addition, the ASIC may be located in an access network device, a
target network device or a core network device. Of course, the
processor and the storage medium may also exist as discrete
components in an access network device, a target network device or
a core network device.
[0214] Those skilled in the art may realize that, in one or more
abovementioned examples, all or part of the functions described in
the embodiments of the disclosure may be realized through software,
hardware or any combination thereof. During implementation with the
software, the embodiments may be implemented completely or
partially in form of computer program product. The computer program
product includes one or more computer instructions. When the
computer program instruction is loaded and executed on a computer,
the flows or functions according to the embodiments of the
disclosure are completely or partially generated. The computer may
be a universal computer, a dedicated computer, a computer network
or another programmable device. The computer instruction may be
stored in a computer-readable storage medium or transmitted from
one computer-readable storage medium to another computer-readable
storage medium. For example, the computer instruction may be
transmitted from a website, computer, server or data center to
another website, computer, server or data center in a wired (for
example, coaxial cable, optical fiber and Digital Subscriber Line
(DSL)) or wireless (for example, infrared, wireless and microwave)
manner. The computer-readable storage medium may be any available
medium accessible by the computer or a data storage device, such as
a server and a data center, including one or more integrated
available media. The available medium may be a magnetic medium (for
example, a floppy disk, a hard disk and a magnetic tape), an
optical medium (for example, a Digital Video Disc (DVD)), a
semiconductor medium (for example, a Solid State Disk (SSD)) or the
like.
[0215] The abovementioned specific implementation modes further
describe the purposes, technical solutions and beneficial effects
of the embodiments of the disclosure in detail. It is to be
understood that the above is only the specific implementation mode
of the embodiments of the disclosure and not intended to limit the
scope of protection of the embodiments of the disclosure. Any
modifications, equivalent replacements, improvements and the like
made on the basis of the technical solutions of the embodiments of
the disclosure shall fall within the scope of protection of the
embodiments of the disclosure.
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