U.S. patent application number 17/824509 was filed with the patent office on 2022-09-15 for transmission instruction method, device, terminal, base station and storage medium.
This patent application is currently assigned to ZTE Corporation. The applicant listed for this patent is ZTE Corporation. Invention is credited to Bo GAO, Chuangxin JIANG, Yu Ngok LI, Zhaohua LU, Shujuan ZHANG.
Application Number | 20220295532 17/824509 |
Document ID | / |
Family ID | 1000006359085 |
Filed Date | 2022-09-15 |
United States Patent
Application |
20220295532 |
Kind Code |
A1 |
GAO; Bo ; et al. |
September 15, 2022 |
TRANSMISSION INSTRUCTION METHOD, DEVICE, TERMINAL, BASE STATION AND
STORAGE MEDIUM
Abstract
Disclosed are an transmission indication method and apparatus, a
terminal, a base station and a storage medium. The transmission
indication method is applied to a terminal and includes: receiving,
from a base station, a Radio Resource Control (RRC) signaling
comprising a path loss (PL) reference signal (RS) resource pool,
the PL RS resource pool comprising at least one PL RS resource;
receiving, from the base station, a control signaling comprising an
indicator indicating a PL RS resource selected from the PL RS
resource pool; and transmitting an uplink reference signal based on
the PL RS resource selected from the PL RS resource pool.
Inventors: |
GAO; Bo; (Shenzhen, CN)
; LU; Zhaohua; (Shenzhen, CN) ; LI; Yu Ngok;
(Shenzhen, CN) ; JIANG; Chuangxin; (Shenzhen,
CN) ; ZHANG; Shujuan; (Shenzhen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ZTE Corporation |
Shenzhen |
|
CN |
|
|
Assignee: |
ZTE Corporation
Shenzhen
CN
|
Family ID: |
1000006359085 |
Appl. No.: |
17/824509 |
Filed: |
May 25, 2022 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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17489348 |
Sep 29, 2021 |
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17824509 |
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PCT/CN2020/076801 |
Feb 26, 2020 |
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17489348 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 52/146 20130101;
H04W 72/1289 20130101; H04L 1/1812 20130101; H04L 5/0051
20130101 |
International
Class: |
H04W 72/12 20060101
H04W072/12; H04L 1/18 20060101 H04L001/18; H04L 5/00 20060101
H04L005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 29, 2019 |
CN |
201910253399.7 |
Claims
1. A transmission indication method, applied to a terminal,
comprising: receiving, from a base station, a Radio Resource
Control (RRC) signaling comprising a path loss (PL) reference
signal (RS) resource pool, the PL RS resource pool comprising at
least one PL RS resource; receiving, from the base station, a
control signaling comprising an indicator indicating a PL RS
resource selected from the PL RS resource pool; and transmitting an
uplink reference signal based on the PL RS resource selected from
the PL RS resource pool.
2. The method of claim 1, further comprising: associating the PL RS
resource selected from the PL RS resource pool with a Sounding
Reference Signal (SRS) resource set.
3. The method of claim 1, wherein the uplink reference signal is
used for beam management, a codebook mode, a non-codebook mode, or
antenna switching.
4. The method of claim 1, wherein the control signaling comprises a
media access control-control element (MAC-CE) signaling.
5. The method of claim 1, wherein the uplink reference signal
comprises a channel sounding reference signal.
6. A device comprising a memory for storing computer instructions
and a processor in communication with the memory, wherein, when the
processor executes the computer instructions, the processor is
configured to cause the device to: receive, from a base station, an
RRC signaling comprising a PL RS resource pool, the PL RS resource
pool comprising at least one PL RS resource; receive, from the base
station, a control signaling comprising an indicator indicating a
PL RS resource selected from the PL RS resource pool; and transmit
an uplink reference signal based on the PL RS resource selected
from the PL RS resource pool.
7. The device of claim 6, wherein, when the processor executes the
computer instructions, the processor is configured to further cause
the device to: associate the PL RS resource selected from the PL RS
resource pool with an SRS resource set.
8. The device of claim 6, wherein the uplink reference signal is
used for beam management, a codebook mode, a non-codebook mode, or
antenna switching.
9. The device of claim 6, wherein the control signaling comprises a
MAC-CE signaling.
10. The device of claim 6, wherein the uplink reference signal
comprises a channel sounding reference signal.
11. A transmission indication method, applied to a base station,
comprising: transmitting, to a User Equipment (UE), an RRC
signaling comprising a PL RS resource pool, the PL RS resource pool
comprising at least one PL RS resource; transmitting, to the UE, a
control signaling comprising an indicator indicating a PL RS
resource selected from the PL RS resource pool; and receiving an
uplink reference signal, the uplink reference signal being based on
the PL RS resource selected from the PL RS resource pool.
12. The method of claim 11, wherein the uplink reference signal is
used for beam management, a codebook mode, a non-codebook mode, or
antenna switching.
13. The method of claim 11, wherein the control signaling comprises
a MAC-CE signaling.
14. The method of claim 11, wherein the uplink reference signal
comprises a channel sounding reference signal.
15. A device comprising a memory for storing computer instructions
and a processor in communication with the memory, wherein, when the
processor executes the computer instructions, the processor is
configured to cause the device to: transmit, to a User Equipment
(UE), an RRC signaling comprising a PL RS resource pool, the PL RS
resource pool comprising at least one PL RS resource; transmit, to
the UE, a control signaling comprising an indicator indicating a PL
RS resource selected from the PL RS resource pool; and receive an
uplink reference signal, the uplink reference signal being based on
the PL RS resource selected from the PL RS resource pool.
16. The device of claim 15, wherein the uplink reference signal is
used for beam management, a codebook mode, a non-codebook mode, or
antenna switching.
17. The device of claim 15, wherein the control signaling comprises
a MAC-CE signaling.
18. The device of claim 15, wherein the uplink reference signal
comprises a channel sounding reference signal.
19. A computer program product comprising a non-transitory
computer-readable program medium with computer code stored
thereupon, the computer code, when executed by one or more
processors, causing the one or more processors to implement a
method of claim 1.
20. A computer program product comprising a non-transitory
computer-readable program medium with computer code stored
thereupon, the computer code, when executed by one or more
processors, causing the one or more processors to implement a
method of claim 11.
Description
[0001] This application is a continuation of U.S. patent
application Ser. No. 17/489,348 filed on Sep. 29, 2021, which is a
continuation application of PCT International Patent Application
No. PCT/CN2020/076801, filed with the China National Intellectual
Property Administration, PRC on Feb. 26, 2020, which claims
priority to Chinese Patent Application No. 201910253399.7, filed
with the China National Intellectual Property Administration, PRC
on Mar. 29, 2019, each of which is incorporated herein by reference
in their entireties.
TECHNICAL FIELD
[0002] The present application relates to the field of
communications, and for example, a transmission indication method
and apparatus, a terminal, a base station and a storage medium.
BACKGROUND
[0003] The ultra-wide bandwidth high-frequency-band (namely
millimeter wave communication) becomes an important direction of
mobile communication development, and attracts the worldwide
academic community and industrial community. In particular, the
advantages of millimeter wave have become increasingly attractive
in increasingly congested spectrum resources and massive access to
physical networks, and many standards organizations, such as an
institute of electrical and electronics engineers (IEEE), a 3rd
generation partnership project (3GPP), have begun to develop
corresponding standardization efforts. For example, in the 3GPP
standard group, the high-frequency-band communication would become
an important innovation point for a new radio access technology
(New RAT) of a fifth generation mobile communication technology
(5G) by virtue of the significant advantage of a large
bandwidth.
[0004] In an antenna weight (also referred to as precoding, beam)
training process, a high-frequency-band sending terminal sends
training pilots, and a receiving terminal receives a channel and
performs a channel estimation. Then, the high-frequency-band
receiving terminal needs to feed back channel state information to
the high-frequency-band sending terminal, so that a sending and
receiving terminal may find multiple groups of sending and
receiving terminal antenna weight pairs required for the multi-path
data transmission from selectable sending and receiving terminal
antenna weight pairs, and thus the overall spectrum efficiency is
improved.
[0005] In a 5G communication system, since it is required that a
flexibility of a beam configuration of an uplink data channel and
an uplink reference signal is set to be higher than a flexibility
of a power control parameter configuration of a data channel and a
reference signal, so that power control parameters of an uplink
data signal and an uplink reference signal in an actual system
cannot be updated in time, causing a problem that the uplink
interference is aggravated.
SUMMARY
[0006] The present application provides a transmission indication
method and apparatus, a terminal, a base station and a storage
medium, so that an uplink transmission control parameter may be
updated synchronously.
[0007] An embodiment of the present application provides a
transmission indication method. The transmission indication method
is applied to a terminal, and includes: receiving, from a base
station, a Radio Resource Control (RRC) signaling comprising a path
loss (PL) reference signal (RS) resource pool, the PL RS resource
pool comprising at least one PL RS resource; receiving, from the
base station, a control signaling comprising an indicator
indicating a PL RS resource selected from the PL RS resource pool;
and transmitting an uplink reference signal based on the PL RS
resource selected from the PL RS resource pool.
[0008] An embodiment of the present application provides a
transmission indication method. The transmission indication method
is applied to a base station, and includes: transmitting, to a User
Equipment (UE), an RRC signaling comprising a PL RS resource pool,
the PL RS resource pool comprising at least one PL RS resource;
transmitting, to the UE, a control signaling comprising an
indicator indicating a PL RS resource selected from the PL RS
resource pool; and receiving an uplink reference signal, the uplink
reference signal being based on the PL RS resource selected from
the PL RS resource pool.
[0009] An embodiment of the present application provides a network
element or a UE comprising a processor and a memory, wherein the
processor is configured to read code from the memory and implement
any methods recited in any of the embodiments.
[0010] An embodiment of the present application provides a computer
program product comprising a computer-readable program medium code
stored thereupon, the code, when executed by a processor, causing
the processor to implement any method recited in any of the
embodiments.
BRIEF DESCRIPTION OF DRAWINGS
[0011] FIG. 1 is a schematic structural diagram of a hybrid
precoding transceiver involved in the present application;
[0012] FIG. 2 is a schematic flowchart of a transmission indication
method provided in the present application;
[0013] FIG. 3 is a schematic diagram of configuring a power control
parameter of an SRS resource set through control signaling in the
present application;
[0014] FIG. 4 is a schematic diagram illustrating that information
of an SRS spatial relation parameter is configured through control
signaling in the present application;
[0015] FIG. 5 is a schematic flowchart of another transmission
indication method provided in the present application;
[0016] FIG. 6 is a schematic structural diagram of a transmission
indication apparatus provided in the present application; and
[0017] FIG. 7 is a schematic structural diagram of another
transmission indication apparatus provided in the present
application.
DETAILED DESCRIPTION
[0018] Embodiments of the present application will now be described
in detail with reference to the accompanying drawings.
[0019] FIG. 1 is a schematic structural diagram of a hybrid
precoding transceiver involved in the present application. The
hybrid precoding transceiver may also be referred to as a hybrid
analog-to-digital beamforming transceiver. Referring to FIG. 1, a
system sending terminal and a system receiving terminal are
configured with a multi-antenna unit and multiple radio frequency
links. In this embodiment, the sending terminal may be considered
as a terminal, and the receiving terminal may be considered as a
base station end. Each radio frequency link is interconnected with
an antenna array unit (not excluding a partial-connection
scenario), and each antenna unit has a digital keying phase
shifter. A method of loading different phase shift magnitudes onto
signals on multiple antenna units enables a high-frequency-band
system to achieve a beamforming of an analog terminal. In an
embodiment, in the hybrid analog-to-digital beamforming
transceiver, there are multiple radio frequency signal streams.
Each signal stream is sent from the multi-antenna unit to a
high-frequency-band physical propagation channel by loading a
precoding antenna weight vector (AWV) through the digital keying
phase shifter onto the signal stream; at the receiving terminal,
radio frequency signal streams received by the multi-antenna unit
are weighted and combined into a single signal stream, and the
single signal stream is radio frequency demodulated via the
receiving terminal, a receiver finally obtains multiple received
signal streams, and the multiple received signal streams are
sampled and received by a digital baseband.
[0020] A beam may be a resource (e.g., a sending terminal spatial
filter, a receiving terminal spatial filter, a sending terminal
precoding, a receiving terminal precoding, an antenna port, an
antenna weight vector, an antenna weight matrix, etc.), and a beam
sequence number may be replaced by a resource index (e.g., a
reference signal resource index), since the beam may be bound to
some time-frequency code resources in transmission. The beam may
also be a transmission (sending/receiving) manner; and the
transmission manner may include a space division multiplexing, a
frequency domain/time domain diversity, etc.
[0021] Moreover, the base station end, i.e. a base station, may
perform a quasi co-location configuration on two reference signals
and inform a user end, i.e., the terminal, to describe the channel
characteristic assumption. Parameters related to a quasi
co-location at least include a doppler spread, a doppler
translation, a delay spread, an average delay, an average gain and
a spatial parameter. In this embodiment, the spatial parameter may
include a spatial receiving parameter, such as an angle of arrival,
a spatial correlation of a receiving beam, an average delay, and a
correlation of time-frequency channel response (including phase
information). The reference signal includes at least one of:
[0022] 1) a channel state information reference signal
(CSI-RS),
[0023] 2) a channel state information interference measurement
(CSI-IM) signal,
[0024] 3) a demodulation reference signal (DMRS),
[0025] 4) a downlink demodulation reference signal (DL DMRS),
[0026] 5) an uplink demodulation reference signal (UL DMRS),
[0027] 6) a channel sounding reference signal (SRS),
[0028] 7) a phase-tracking reference signal (PTRS),
[0029] 8) a random access channel (RACH) signal,
[0030] 9) a synchronization signal (SS),
[0031] 10) a synchronization signal block (SS block),
[0032] 11) a primary synchronization signal (PSS), or
[0033] 12) a secondary synchronization signal (SSS).
[0034] In order to solve a technical problem that a beam
configuration parameter and a power control parameter of an uplink
transmission control parameter, i.e., an uplink reference signal,
cannot be updated synchronously, this embodiment provides a
transmission indication method.
[0035] FIG. 2 is a schematic flowchart of a transmission indication
method provided in the present application. The method may be
applied to a condition that an uplink transmission control
parameter of an uplink reference signal is configured when the
uplink reference signal is transmitted, the method may be executed
by a transmission indication apparatus including a receiving module
in the present application, the receiving module is configured to
receive control signaling sent by a base station, and the apparatus
may be implemented by software and/or hardware and is integrated on
a terminal. The terminal encompasses any suitable type of wireless
user equipment, such as a mobile telephone, a portable data
processing apparatus, a portable web browser, or an in-vehicle
mobile station.
[0036] As shown in FIG. 2, the transmission indication method
provided in the present application is applied to the terminal and
includes the following steps.
[0037] In S1010, control signaling sent by a base station is
received.
[0038] When the terminal performs transmission indication, the
terminal may firstly receive the control signaling sent by the base
station so as to perform the transmission configuration, such as a
configuration of the uplink reference signal, based on the received
control signaling.
[0039] In this step, the terminal may receive data transmitted by
the base station in real time and analyze the received data so as
to extract the control signaling for the transmission indication.
In this embodiment, the control signaling may be understood as
signaling for configuring a transmission manner of the uplink
reference signal. The control signaling may be used for indicating
the uplink transmission control parameter.
[0040] In S1020, the uplink transmission control parameter of the
uplink reference signal is indicated through the control
signaling.
[0041] The uplink reference signal may be understood as a reference
signal sent by the terminal to the base station, and a content of
the reference signal is not limited here. In an embodiment, the
uplink reference signal sent by the terminal to the base station
may be determined by the control signaling received by the
terminal. The control signaling may carry an index of an uplink
reference signal which the terminal needs to send to the base
station, and the index may be used for identifying an uplink
reference signal which needs to be transmitted. The uplink
reference signals may include a channel sounding reference signal
(SRS), a phase tracking reference signal (PTRS), a physical random
access channel (PRACH), an uplink demodulation reference signal (UL
DMRS), and the like.
[0042] After the control signaling is received, the terminal may
indicate the uplink transmission control parameter of the uplink
reference signal based on the control signaling, so that the uplink
transmission signal is transmitted based on the indicated uplink
transmission control parameter.
[0043] In this embodiment, the uplink transmission control
parameter may be understood as a control parameter upon the uplink
reference signal being transmitted. A content of the uplink
transmission control parameter may not be limited, and the uplink
transmission control parameter may include a control parameter
required by transmission of the uplink transmission signal.
[0044] In an embodiment, the uplink transmission control parameter
may include a beam configuration parameter and a power control
parameter. In an embodiment, the beam configuration parameter may
be understood as a spatial relation parameter. The power control
parameter may be understood as a power control parameter.
[0045] In an embodiment, the power control parameter includes at
least one or a combination of the following: 1. an open-loop power
control parameter, 2. a path loss (PL) reference signal, or 3. a
closed-loop power control index. In an embodiment, the open-loop
power control parameter may be composed of a path loss adjustment
coefficient alpha and/or a target power p0. A magnitude of the
power may be changed by changing a magnitude of alpha.
[0046] In an embodiment, in a case where the uplink transmission
control parameter of the uplink reference signal is indicated based
on the control signaling, an indication policy may be determined
based on a content included in the uplink transmission control
parameter.
[0047] Exemplarily, in a case where the uplink transmission control
parameter includes the power control parameter, the control
signaling may determine a corresponding power control parameter
based on a resource set of the uplink reference signal. In an
embodiment, the resource set of the uplink reference signal may be
configured by radio resource control (RRC) signaling, and the RRC
signaling may be sent by the base station; in a case where a
triggered uplink reference signal is an aperiodic uplink reference
signal, a corresponding power control parameter may be determined
by downlink control information (DCI), a downlink physical control
channel (PDCCH), or a power control parameter at an initial sending
moment of an uplink reference signal resource set associated with
the uplink reference signal; and in a case where the uplink
transmission control parameter includes the spatial relation
parameter, the control signaling may be based on the DCI, a spatial
relation parameter at a transmission moment of a downlink control
channel, a spatial relation parameter at a sending moment of the
uplink reference signal, a spatial relation parameter at an initial
sending moment of an uplink reference signal resource set
associated with a triggering state of the uplink reference signal,
and/or a spatial relation parameter at an initial sending moment of
at least one uplink reference signal resource set associated with
the uplink reference signal, and the control signaling may also be
selected from a spatial relation set.
[0048] In S1030, the uplink reference signal is transmitted based
on the uplink transmission control parameter.
[0049] After the control signaling indicates the uplink
transmission control parameter, the uplink reference signal may be
transmitted based on the indicated uplink transmission control
parameter, so that the uplink transmission control parameter can be
synchronously updated when the uplink reference signal is
transmitted.
[0050] According to the transmission indication method provided in
this embodiment, the uplink transmission control parameter of the
uplink reference signal is indicated based on the control signaling
received from the base station, and then the uplink reference
signal is transmitted based on the uplink transmission control
parameter. A technical problem that the uplink transmission control
parameter cannot be updated synchronously is solved, and the
synchronous updating of the uplink transmission control parameter
is achieved.
[0051] The terminal in this embodiment may be a user end, updates a
channel characteristic assumption for {Aperiodic/Semi-persistent
(AP/SP)}-SRS, and determines a power control parameter of the SRS/a
physical Uplink Shared Channel (PUSCH). The transmission indication
method in this embodiment may be considered as a method of a
sending configuration in a data channel and a reference signal. The
reference signal may assist in a data signal sending.
[0052] On the basis of the above-described embodiments, a modified
embodiment of the above-described embodiments is proposed, and it
should be noted here that in order to make a brief description,
only the differences from the above-described embodiments are
described in the modified embodiment.
[0053] In an embodiment of the present application, the control
signaling includes media access control-control element (MAC-CE)
signaling.
[0054] The MAC-CE signaling may be understood as signaling which is
in a media access control (MAC) and is capable of indicating the
uplink transmission control parameter of the uplink reference
signal. After the terminal receives the MAC-CE signaling sent by
the base station, the terminal indicates the uplink transmission
control parameter of the uplink reference signal based on the
MAC-CE signaling. The MAC-CE signaling may be used for configuring
the uplink transmission control parameter and guarantee synchronous
updating of the uplink transmission control parameter, for example,
the MAC-CE signaling may configure the power control parameter and
the spatial relation parameter in the uplink transmission control
parameter so as to guarantee the synchronous updating of the power
control parameter and the spatial relation parameter.
[0055] In an embodiment of the present application, the uplink
reference signal includes a channel sounding reference signal
(SRS), a phase tracking reference signal (PTRS), and a physical
random access channel (PRACH).
[0056] In an embodiment of the present application, an effective
time of an indication of the control signaling is determined by a
sending time of hybrid automatic repeat request-acknowledgement
(HARQ-ACK) signaling associated with a physical downlink shared
channel (PDSCH) carrying the control signaling.
[0057] According to the present application, an effective time of
the uplink transmission control parameter configured by the control
signaling may be determined according to a sending time of a
HARQ-ACK associated with a physical downlink shared channel bearing
the uplink reference signal, and a configuration means may be
determined according to an actual scene for transmitting the uplink
reference signal.
[0058] In an embodiment of the present application, the uplink
transmission control parameter includes a power control parameter.
Power based on which the uplink reference signal is transmitted may
be set based on the power control parameter.
[0059] In an embodiment of the present application, the step in
which the uplink transmission control parameter of the uplink
reference signal is indicated through the control signaling
includes at least one of: an open-loop power control parameter in
the power control parameter is associated with a resource set of
the uplink reference signal through the control signaling; an
element index in an open-loop power control parameter set in the
power control parameter is associated with a resource set of the
uplink reference signal through the control signaling; a path loss
reference signal in the power control parameter is associated with
the resource set of the uplink reference signal through the control
signaling; an element index in a path loss reference signal set in
the power control parameter is associated with the resource set of
the uplink reference signal through the control signaling; or a
closed-loop power control index in the power control parameter is
associated with the resource set of the uplink reference signal
through the control signaling.
[0060] In an embodiment, a condition under which the uplink
transmission control parameter is indicated according to the
resource set of the uplink reference signal is that: the uplink
reference signal is used for beam management, a codebook mode, a
non-codebook mode, antenna switching, or positioning.
[0061] When the uplink transmission control parameter of the uplink
reference signal is indicated through the control instruction, the
uplink transmission control parameter may be determined based on
the resource set of the uplink reference signal.
[0062] In an embodiment, in a case where the power control
parameter in the uplink transmission control parameter is
determined, at least one of the following may be configured: the
open-loop power control parameter, the path loss reference signal,
or the closed-loop power control index.
[0063] When the open-loop power control parameter in the power
control parameter is configured, it is feasible to directly
configure the open-loop power control parameter, and it is also
feasible to configure the element index in the open-loop power
control parameter set.
[0064] In an embodiment, the control signaling may be the MAC-CE
signaling, and the uplink reference signal may be the SRS. The step
in which the uplink transmission control parameter of the uplink
reference signal is indicated through the control signaling may
include at least one of: the MAC-CE signaling designates that the
open-loop power control parameter is associated with a resource set
of the SRS; or the MAC-CE signaling designates that the element
index in the open-loop power control parameter set is associated
with a resource set of the SRS; the MAC-CE signaling designates
that the path loss (PL) reference signal is associated with an SRS
resource set of the SRS; or the MAC-CE signaling designates that an
element index in a path loss (PL) reference signal set is
associated with the resource set of the SRS, or the MAC-CE
signaling designates a closed-loop power control index of the
physical uplink shared channel (PUSCH) or a closed-loop power
control index in the SRS is associated with the SRS resource
set.
[0065] Exemplarily, FIG. 3 is a schematic diagram of configuring a
power control parameter of an SRS resource set through control
signaling in the present application; as shown in FIG. 3, the RRC
signaling may configure or reconfigure a path loss (PL) reference
signal (RS) resource pool and an open-loop power control parameter
pool. In an embodiment, parameters of each resource pool are
renumbered. Then, a power control parameter is configured for one
SRS resource set through the control signaling, such as the MAC-CE
signaling, and a power control parameter of the SRS resource set
and a power control parameter associated with the SRS resource set
are configured, which includes a PL RS, an open-loop parameter and
a closed-loop index value. That the power control parameter of the
SRS resource set is configured may include: a corresponding PL RS
is selected from a PL RS resource pool, such as PL-identifier 3
(ID3) selected in FIG. 3; a corresponding open-loop power control
parameter is selected from the open-loop power control parameter
pool, such as an open-loop-ID1 (OL-ID1) selected in FIG. 3; and the
closed-loop power control index is indicated.
[0066] Table 1 shows a signaling format of the control signaling
for configuring a power control parameter of the SRS in the present
application.
TABLE-US-00001 TABLE 1 A table showing a signaling format of the
control signaling for configuring a power control parameter of the
SRS in the present application. SRS resource set index SRS resource
set P0/alpha/reference signal index/closed-loop power control
index
[0067] Referring to Table 1, different from FIG. 3, Table 1
provides a signaling method for directly configuring the power
control parameter of the SRS, that is, a required open-loop power
control parameter (which may include P0 and alpha), a reference
signal index, and a closed-loop power control index are explicitly
configured for a specified SRS resource set.
[0068] In an embodiment of the present application, the step in
which the uplink transmission control parameter of the uplink
reference signal is indicated through the control signaling
includes at least one of: an open-loop power control parameter in
the power control parameter is associated with an uplink reference
signal resource in a resource set of the uplink reference signal
through the control signaling; or an element index in an open-loop
power control parameter set in the power control parameter is
associated with an uplink reference signal resource in a resource
set of the uplink reference signal through the control signaling; a
path loss reference signal in the power control parameter is
associated with the uplink reference signal resource in the
resource set of the uplink reference signal through the control
signaling; or an element index in a path loss reference signal set
in the power control parameter is associated with the uplink
reference signal resource in the resource set of the uplink
reference signal through the control signaling; or a closed-loop
power control index in the power control parameter is associated
with the uplink reference signal resource in the resource set of
the uplink reference signal through the control signaling.
[0069] In an embodiment, a condition under which the uplink
transmission control parameter is indicated according to the uplink
reference signal resource in the resource set of the uplink
reference signal may be that the uplink reference signal is used
for a non-codebook mode, antenna switching, or positioning.
[0070] When the control signaling indicates the uplink transmission
control parameter, the power control parameter may be determined
based on the uplink reference signal resource in the resource set
of the uplink reference signal.
[0071] The control signaling being the MAC-CE signaling and the
uplink reference signal being the SRS is used as an example, the
step in which the uplink transmission control parameter of the
uplink reference signal is indicated through the control signaling
may include at least one of: the MAC-CE signaling designates that
the open-loop power control parameter is associated with an SRS
resource of an SRS to be transmitted; or the MAC-CE signaling
designates that the element index in the open-loop power control
parameter set is associated with an SRS resource of an SRS to be
transmitted; the MAC-CE signaling designates that the path loss
(PL) reference signal is associated with the SRS resource of the
SRS to be transmitted; or the MAC-CE signaling designates that an
element index in a path loss (PL) reference signal set is
associated with the SRS resource of the SRS to be transmitted, or
the MAC-CE signaling designates a closed-loop power control index
of the PUSCH or a closed-loop power control index of the SRS is
associated with the SRS resource of the SRS to be transmitted.
[0072] Exemplarily, Table 2 shows another signaling format of the
control signaling for configuring a power control parameter of the
SRS in the present application.
TABLE-US-00002 TABLE 2 Another signaling format of the control
signaling for configuring a power control parameter of the SRS in
the present application. SRS resource set index SRS resource 0:
P0/alpha/reference signal index/closed-loop power control index SRS
resource 1: P0/alpha/reference signal index/closed-loop power
control index . . . . . . SRS resource k: P0/alpha/reference signal
index/closed-loop power control index
[0073] As shown in Table 2, in a case where the SRS is used for a
non-codebook transmission mode or antenna switching, the MAC-CE
signaling designates one SRS resource set that needs to be
configured, and a corresponding power control parameter (including
P0/alpha), a corresponding reference signal index, and a
corresponding closed-loop power control index are configured for
each SRS resource in the set.
[0074] In an embodiment of the present application, after the
uplink transmission control parameter of the uplink reference
signal is indicated through the control instruction, it may include
at least one or a combination of: in a case where an aperiodic
uplink reference signal is triggered through the control
instruction, a power control parameter of the aperiodic uplink
reference signal is determined according to a power control
parameter at a transmission moment of downlink control information
(DCI) of the triggered aperiodic uplink reference signal or a
downlink control channel of the triggered aperiodic uplink
reference signal; in a case where an aperiodic uplink reference
signal is triggered through the control instruction, a power
control parameter of the aperiodic uplink reference signal is
determined according to a power control parameter at a sending
moment of the triggered aperiodic uplink reference signal; in a
case where an aperiodic uplink reference signal is triggered
through the control instruction, a power control parameter of the
aperiodic uplink reference signal is determined according to a
power control parameter at an initial sending moment of an uplink
reference signal resource set associated with a triggering state of
the triggered aperiodic uplink reference signal; or in a case where
an aperiodic uplink reference signal is triggered through the
control instruction, a power control parameter of the aperiodic
uplink reference signal is determined according to a power control
parameter at an initial sending moment of at least one uplink
reference signal resource set associated with the triggered
aperiodic uplink reference signal.
[0075] In an embodiment, at least one uplink reference signal
resource set associated with the uplink reference signal may be
used for antenna switching.
[0076] When the uplink transmission control parameter is
configured, if the aperiodic uplink reference signal is triggered,
the uplink transmission control parameter is determined according
to a power control parameter at a transmission time of the DCI of
the triggered SRS or the PDCCH of the triggered SRS, a power
control parameter at a sending moment of the triggered SRS, a power
control parameter at an initial sending moment of an SRS resource
set associated with a triggering state of the triggered SRS, and/or
a power control parameter at an initial sending moment of at least
one SRS resource set associated with the triggered SRS, the
determination means may be set according to an actual situation. In
an embodiment, at least one SRS resource set associated with the
triggered SRS is used for the antenna switching.
[0077] In an embodiment of the present application, the uplink
transmission control parameter may include a spatial relation
parameter.
[0078] In a case where the uplink transmission control parameter
includes the spatial relation parameter, a beam configuration
parameter of the uplink reference signal may be set. In a case
where the uplink transmission control parameter includes the
spatial relation parameter and the power control parameter, the
synchronous updating of the power control parameter and the spatial
relation parameter of the uplink reference signal can be achieved
when the uplink reference signal is transmitted based on the uplink
transmission control parameter indicated by the control
instruction.
[0079] In an embodiment of the present application, the step in
which the uplink transmission control parameter of the uplink
reference signal is indicated through the control signaling
includes: the uplink reference signal is activated or deactivated,
or a spatial relation parameter of the uplink reference signal is
configured; where the uplink reference signal is a semi-persistent
uplink reference signal.
[0080] The semi-persistent uplink reference signal may be activated
or deactivated by the control signaling, and a spatial relation
parameter corresponding to the uplink reference signal are
configured by the control signaling.
[0081] In an embodiment of the present application, the step in
which the uplink transmission control parameter of the uplink
reference signal is indicated through the control signaling
includes: a spatial relation parameter of the uplink reference
signal is configured through the control signaling; where the
uplink reference signal is an aperiodic uplink reference
signal.
[0082] The triggering of the aperiodic uplink reference signal may
be triggered by the DCI, and the spatial relation parameter of the
aperiodic uplink reference signal may be configured by the control
signaling.
[0083] In an embodiment of the present application, the control
signaling includes a grouping index in a case where a reference
signal with which the spatial relation parameter is associated is a
downlink reference signal.
[0084] The control signaling may include a grouping index in a case
where a reference signal with which the spatial relation parameter
is associated is the path loss reference signal.
[0085] In an embodiment of the present application, the control
signaling includes a grouping index in a case where the uplink
reference signal is used for beam management or antenna
switching.
[0086] The grouping index may be a resource set index, an antenna
panel index, a sub-antenna panel index, an antenna port group
index, a beam group index, a transmission unit, or a receiving
unit. In an embodiment, the grouping index may be used for
describing the antenna panel and features associated with the
antenna panel, and the feature is not limited. The grouping index
may also be referred as a grouping state.
[0087] In an embodiment of the present application, the spatial
relation parameter is selected from an spatial relation parameter
set, where the spatial relational parameter set is configured by
radio resource control (RRC) signaling.
[0088] In an embodiment, the grouping index may be used for
determining whether a reference signal or channel associated with
the grouping index can be sent simultaneously, or for determining
whether a reference signal or channel with which the grouping index
is associated can be received simultaneously.
[0089] In an embodiment, the grouping index may be used for
determining a requirement for scheduling delay of a reference
signal or channel with which the grouping index is associated.
[0090] In an embodiment, the grouping index may be used for
determining whether large-scale parameters of a reference signal or
channel with which the grouping index is associated are the same or
similar. In an embodiment, the large-scale parameters include a
path loss, a coupling loss, a timing advance, a doppler
translation, and the like.
[0091] In an embodiment of the present application, the step in
which the uplink transmission control parameter of the uplink
reference signal is indicated through the control signaling
includes at least one or a combination of: in a case where an
aperiodic uplink reference signal is triggered through the control
instruction, a spatial relation parameter associated with the
triggered uplink reference signal is determined according to a
spatial relation parameter at a transmission moment of DCI of the
triggered uplink reference signal or a downlink control channel
(PDCCH) of the triggered uplink reference signal; in a case where
an aperiodic uplink reference signal is triggered through the
control instruction, a spatial relation parameter associated with
the triggered uplink reference signal is determined according to a
spatial relation parameter at a sending moment of the triggered
uplink reference signal; in a case where an aperiodic uplink
reference signal is triggered through the control instruction, a
spatial relation parameter associated with the triggered uplink
reference signal is determined according to a spatial relation
parameter at an initial sending moment of an uplink reference
signal resource set associated with a triggering state of the
triggered uplink reference signal; or in a case where the aperiodic
uplink reference signal is triggered through the control
instruction, a spatial relation parameter associated with the
triggered uplink reference signal is determined according to a
spatial relation parameter at an initial sending moment of at least
one uplink reference signal resource set associated with the
triggered uplink reference signal.
[0092] In an embodiment, the at least one uplink reference signal
resource set associated with the uplink reference signal is used
for antenna switching.
[0093] FIG. 4 is a schematic diagram of configuring information of
an SRS spatial relation parameter through control signaling in the
present application. Referring to FIG. 4, for an aperiodic SRS
resource, one spatial relation state set (high-layer signaling SRS
Config), L.sub.d aperiodic SRS resource sets, and L.sub.t SRS
triggering states may be configured by the RRC signaling may be
configured through RRC signaling, where each triggering state may
be associated with at most L.sub.d aperiodic SRS resource sets.
L.sub.d and L.sub.t may be positive integers, and values of L.sub.d
and L.sub.t may be set according to an actual situation.
[0094] Each SRS resource in an aperiodic SRS resource set is
associated with an alternative spatial relation state through the
MAC-CE signaling, and the spatial relation state in this embodiment
is configured by the RRC layer signaling described above. In an
embodiment, an power control parameter is configured for the
aperiodic SRS resource set through the MAC-CE signaling, or a power
control parameter is configured for an uplink reference signal
resource indicator (SRI) codepoint. From the perspective of a user,
an effective time of the MAC-CE signaling is determined by a
transmission time of a HARQ-ACK associated with a PDSCH carried by
the MAC-CE.
[0095] An SRS triggering state is triggered through DCI signaling,
and then X aperiodic SRS resource sets are sent. X may be a
positive integer, and a value of X is not limited.
[0096] In an embodiment, the spatial relation information (and a
corresponding power control parameter) associated with the
aperiodic SRS resource set is determined according to spatial
relation information at the moment of the DCI signaling or the
sending moment of the SRS. In an embodiment, the sending moment of
the SRS is an initial sending moment of at least one SRS resource
in the SRS resource set or an initial sending moment of at least
one SRS resource in at least one SRS resource set associated with
the SRS resource set.
[0097] In an embodiment of the present application, the control
signaling further indicates a power control parameter of an uplink
channel.
[0098] In a 5G communication system, since a flexibility of a beam
configuration of an uplink data channel and an uplink reference
signal is set to be higher than a flexibility of a power control
parameter configuration of a data channel and a reference signal,
so that power control parameters of an uplink data signal and an
uplink reference signal in an actual system cannot be updated in
time, causing a problem that the uplink interference is aggravated.
For the technical problem described above, a solution for
supporting synchronous updating of a power control parameter of the
uplink data channel and a power control parameter of the uplink
reference signal is not provided in the related art.
[0099] The control signaling in the present application may also be
used for indicating the power control parameter of the uplink
channel, and according to the present application, the spatial
relation information of the uplink reference signal is configured
according to the control signaling, such as the MAC-CE signaling,
and sending of the uplink reference signal and a power control
parameter of an uplink data channel associated with the uplink
reference signal are designated. Therefore, the rapid cooperation
of uplink interference management under the base station and the
user terminal (terminal) is ensured, the situation that the user
end supports a multi-antenna panel is considered, and thus the
system performance is remarkably improved.
[0100] In an embodiment of the present application, a condition
under which the power control parameter of the uplink channel is
indicated through the control signaling is that: the uplink
reference signal is used for a non-codebook mode or a codebook
mode.
[0101] In an embodiment of the present application, the uplink
channel includes a physical uplink shared channel or a physical
uplink control channel.
[0102] When the uplink channel includes the physical uplink shared
channel or the physical uplink control channel, the uplink
reference signal is used for a non-codebook mode or a codebook
mode.
[0103] In an embodiment of the present application, the step in
which the power control parameter of the uplink channel is
indicated includes: a closed-loop power control value of the uplink
channel is reset.
[0104] When the power control parameter of the uplink channel is
indicated, the closed-loop power control value may be reset so as
to achieve a zero clearing effect.
[0105] In an embodiment of the present application, a condition
under which the closed-loop power control value of the uplink
channel is reset includes that: an uplink reference signal
associated with the uplink channel is used for a non-codebook mode
or a codebook mode.
[0106] In an embodiment of the present application, the step in
which the power control parameter of the uplink channel is
indicated further includes: the power control parameter of the
uplink channel is determined according to a power control parameter
of an uplink reference signal associated with the uplink
channel.
[0107] When the power control parameter of the uplink channel is
indicated through the control signaling, the power control
parameter of the uplink channel may be configured based on a power
control parameter of an uplink reference signal associated with the
uplink channel. The uplink reference signal associated with the
uplink channel may be determined according to an uplink reference
signal resource indication (SRI) codepoint corresponding to the
uplink channel.
[0108] In an embodiment of the present application, a condition
that the power control parameter of the uplink channel is
determined according to the power control parameter of the uplink
reference signal associated with the uplink channel includes that:
the uplink reference signal is used for a non-codebook mode or a
codebook mode.
[0109] In an embodiment of the present application, the step in
which the power control parameter of the uplink channel is
indicated includes at least one of: a path loss reference signal in
the power control parameter of the uplink channel is determined
according to a downlink reference signal associated with a spatial
relation parameter of an uplink reference signal associated with
the uplink channel; the path loss reference signal in the power
control parameter of the uplink channel is determined according to
a path loss reference signal of the uplink reference signal
associated with the uplink channel; an open-loop power control
parameter in the power control parameter of the uplink channel is
determined according to an open-loop power control parameter of the
uplink reference signal associated with the uplink channel; or a
closed-loop power control index in the power control parameter of
the uplink channel is determined according to a closed-loop power
control index of the uplink reference signal associated with the
uplink channel.
[0110] When the power control parameter of the uplink channel is
indicated through the control signaling, it may be determined
according to the power control parameter corresponding to the
uplink reference signal associated with the uplink channel, for
example, a path loss reference signal, an open-loop power control
parameter and a closed-loop power control index of the uplink
channel power control parameter are determined based on the path
loss reference signal, the open-loop power control parameter and
the closed-loop power control index of the uplink reference signal
associated with the uplink channel, respectively.
[0111] In an embodiment, when the path loss reference signal in the
uplink channel power control parameter is determined, the path loss
reference signal may be determined according to a downlink
reference signal associated with the spatial relation parameter of
the uplink reference signal associated with the uplink channel, and
the downlink reference signal may be a path loss reference signal
of the uplink reference signal.
[0112] In an embodiment of the present application, a condition
under which the power control parameter of the uplink channel is
determined based on a path loss reference signal, an open-loop
power control parameter and a closed-loop power control index in an
associated uplink reference signal may be that: the associated
uplink reference signal is used for a non-codebook mode or a
codebook mode.
[0113] In an embodiment of the present application, the step in
which the power control parameter of the uplink channel is
indicated includes: an uplink reference signal resource indication
(SRI) codepoint set is associated with the power control parameter
of the uplink channel; where the SRI codepoint set is formed by
grouping at least one SRI codepoint.
[0114] When the power control parameter of the uplink channel is
indicated through the power control signaling, the power control
parameter of the uplink channel may be determined based on the SRI
codepoint set.
[0115] In an embodiment of the present application, the SRI
codepoint set may be formed by using a bit map.
[0116] In an embodiment of the present application, the step in
which the SRI codepoint set is formed by using the bit map
includes: at least one SRI codepoint is corresponded to a bit
position in the bit map; and in a case where a value at the bit
position in the bit map is a specific value, corresponding SRI
codepoints are selected to form the SRI codepoint set.
[0117] In an embodiment of the present application, one SRI
codepoint set is associated with one power control parameter.
[0118] In an embodiment of the present application, the step in
which the power control parameter of the uplink channel is
indicated includes at least one: an element index in an open-loop
power control parameter set in the power control parameter of the
uplink channel is associated with an SRI codepoint through the
control signaling, or an open-loop power control parameter value
associated with an SRI codepoint is determined through the control
signaling; an element index in a path loss reference signal set in
the power control parameter of the uplink channel is associated
with the SRI codepoint through the control signaling, or a path
loss reference signal index associated with the SRI codepoint is
determined through the control signaling; or a closed-loop power
control index associated with the SRI codepoint is determined
through the control signaling.
[0119] When the power control parameter of the uplink channel is
indicated, the element index in the open-loop power control
parameter set, the element index in the path loss reference signal
set and/or the closed-loop power control index in the power control
parameter may also be determined based on the SRI codepoint.
[0120] In an embodiment of the present application, the open-loop
power control parameter set is configured by radio resource control
signaling.
[0121] In an embodiment of the present application, the path loss
reference signal set is configured by radio resource control
signaling.
[0122] In this embodiment, the radio resource control signaling may
be sent by the base station.
[0123] In an embodiment of the present application, in a case where
the uplink channel transmission is scheduled, for example a PUSCH
transmission is scheduled, the power control parameter associated
with the uplink channel may be determined by a power control
parameter under control signaling associated with the uplink
reference signal sent the most recently (the last time).
[0124] In an embodiment, the power control parameter of the uplink
reference signal indicated by the control signaling covers the
power control parameter configured by the RRC signaling and/or the
power control parameter of the uplink channel indicated by the
control signaling covers the power control parameter configured by
the RRC signaling.
[0125] For example, the power control parameter of the SRS
determined (indicated) by the MAC-CE signaling covers the power
control parameter configured by the RRC signaling. The power
control parameter of the PUSCH determined (indicated) by the MAC-CE
signaling covers the power control parameter configured by the RRC
signaling.
[0126] Based on the above embodiments, according to the
transmission indication method provided in the present application,
the spatial relation information of the uplink reference signal is
configured according to the MAC-CE signaling, and a power control
parameter of the uplink reference signal and a power control
parameter of an uplink data channel associated with the uplink
reference signal are designated. Therefore, the rapid cooperative
uplink interference management under the base station and the user
end (terminal) is ensured, the situation that the user end supports
a multi-antenna panel is considered, and thus the system
performance is remarkably improved.
[0127] Exemplarily, Table 3 is a schematic diagram of a signaling
format of control signaling for configuring SRS and PUSCH power
control parameters in the present application.
[0128] Table 3 shows a signaling format of the control signaling
for configuring a power control parameter of the SRS and a power
control parameter of the PUSCH in the present application.
TABLE-US-00003 TABLE 3 a signaling format of the control signaling
for configuring a power control parameter of the SRS and a power
control parameter of the PUSCH in the present application SRS
resource set index SRS resource set: P0/alpha/reference signal
index/closed-loop power control index SRI = 0: P0/alpha/reference
signal index/closed-loop power control index SRI = 1:
P0/alpha/reference signal index/closed-loop power control index . .
. . . . SRI = n - 1: P0/alpha/reference signal index/closed-loop
power control index
[0129] Referring to Table 3, considering that a sending beam of the
PUSCH is determined by beam information of the SRS in the
non-codebook mode or the codebook mode, in a case where the SRS is
configured in the non-codebook mode or the codebook mode, the
control signaling needs to provide a power control parameter for an
SRI codepoint associated with each PUSCH transmission except that
the power control parameter is provided for the SRS resource set.
For example, in a case of SRI=i, a corresponding power control
parameter is given by the control signaling, and in a case where
the DCI indicates that SRI=I is used for the PUSCH transmission,
the user end needs to send the PUSCH according to the configured
power control parameter.
[0130] FIG. 5 is a schematic flowchart of another transmission
indication method provided in the present application. The present
application further provides a transmission indication method
applied to a base station, as shown in FIG. 5, and the method
includes the following steps.
[0131] In S2010, control signaling is sent to a terminal; where the
control signaling is used for indicating an uplink transmission
control parameter of an uplink reference signal.
[0132] In S2020, the uplink reference signal sent by the terminal
is received.
[0133] In S2030, the uplink reference signal is processed.
[0134] According to the transmission indication method provided in
this embodiment, the control instruction is sent to the terminal so
as to instruct the terminal to indicate the uplink transmission
control parameter of the uplink reference signal based on the
control instruction, then the uplink reference signal sent by the
terminal is received, and the uplink reference signal is processed,
so that the terminal can synchronously update the uplink
transmission control parameter.
[0135] In an embodiment of the present application, the control
signaling includes media access control-control element (MAC-CE)
signaling.
[0136] In an embodiment of the present application, the uplink
reference signal includes a channel sounding reference signal, a
phase tracking reference signal, and a physical random access
channel.
[0137] In an embodiment, the control instruction sent by the base
station to the terminal may also be used for indicating the power
control parameter of the uplink channel. The Uplink channel
includes a physical uplink shared channel or a physical uplink
control channel.
[0138] The present application provides a transmission indication
apparatus, FIG. 6 is a schematic structural diagram of a
transmission indication apparatus provided in the present
application. As shown in FIG. 6, the transmission indication
apparatus in the embodiments of the present application may be
integrated on the terminal provided in the embodiments of the
present application. The apparatus includes: a receiving module 61,
a sending module 62 and at least one processor 63. The receiving
module 61 is configured to receive control signaling sent by a base
station. The sending module 62 is configured to transmit an uplink
reference signal based on an uplink transmission control parameter.
The at least one processor 63 is configured to indicate the uplink
transmission control parameter of the uplink reference signal
through the control signaling.
[0139] The transmission indication apparatus provided in this
embodiment is used for implementing the transmission indication
method in the embodiment shown in FIG. 2, and the implementation
principle and the technical effect of the transmission indication
apparatus provided in this embodiment are similar to those of the
transmission indication method of the embodiment shown in FIG. 2,
which however are not to be detailed here again.
[0140] In an embodiment of the present application, the uplink
transmission control parameter includes a power control
parameter.
[0141] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control signaling in at least one of the following manners: an
open-loop power control parameter in the power control parameter is
associated with a resource set of the uplink reference signal
through the control signaling; an element index in an open-loop
power control parameter set in the power control parameter is
associated with a resource set of the uplink reference signal
through the control signaling; a path loss reference signal in the
power control parameter is associated with the resource set of the
uplink reference signal through the control signaling; an element
index in a path loss reference signal set in the power control
parameter is associated with the resource set of the uplink
reference signal through the control signaling; or a closed-loop
power control index in the power control parameter is associated
with the resource set of the uplink reference signal through the
control signaling.
[0142] In an embodiment of the present application, when the power
control parameter is determined based on the resource set of the
uplink reference signal, the uplink reference signal is used for
beam management, a codebook mode, a non-codebook mode, antenna
switching, or positioning.
[0143] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control signaling in at least one of the following manners: an
open-loop power control parameter in the power control parameter is
associated with an uplink reference signal resource in a resource
set of the uplink reference signal through the control signaling;
or an element index in an open-loop power control parameter set in
the power control parameter is associated with an uplink reference
signal resource in a resource set of the uplink reference signal
through the control signaling; a path loss reference signal in the
power control parameter is associated with the uplink reference
signal resource in the resource set of the uplink reference signal
through the control signaling; or an element index in a path loss
reference signal set in the power control parameter is associated
with the uplink reference signal resource in the resource set of
the uplink reference signal through the control signaling; or a
closed-loop power control index in the power control parameter is
associated with the uplink reference signal resource in the
resource set of the uplink reference signal through the control
signaling.
[0144] In an embodiment of the present application, when the power
control parameter is determined based on the uplink reference
signal resource in the resource set of the uplink reference signal,
the uplink reference signal is used for a non-codebook mode,
antenna switching, or positioning.
[0145] In an embodiment of the present application, the at least
one processor is further configured to: in a case where an
aperiodic uplink reference signal is triggered, a power control
parameter of the aperiodic uplink reference signal is determined
according to a power control parameter at a transmission moment of
downlink control information (DCI) of the triggered aperiodic
uplink reference signal or a downlink control channel of the
triggered aperiodic uplink reference signal.
[0146] In an embodiment of the present application, the at least
one processor is further configured to: in a case where an
aperiodic uplink reference signal is triggered, a power control
parameter of the aperiodic uplink reference signal is determined
according to a power control parameter at a sending moment of the
triggered aperiodic uplink reference signal.
[0147] In an embodiment of the present application, the at least
one processor is further configured to: in a case where an
aperiodic uplink reference signal is triggered, a power control
parameter of the aperiodic uplink reference signal is determined
according to a power control parameter at an initial sending moment
of an uplink reference signal resource set associated with a
triggering state of the triggered aperiodic uplink reference
signal.
[0148] In an embodiment of the present application, the at least
one processor is further configured to: in a case where an
aperiodic uplink reference signal is triggered, a power control
parameter of the aperiodic uplink reference signal is determined
according to a power control parameter at an initial sending moment
of at least one uplink reference signal resource set associated
with the triggered aperiodic uplink reference signal.
[0149] In an embodiment of the present application, the control
signaling also indicates a power control parameter of an uplink
channel.
[0150] In an embodiment of the present application, the uplink
channel includes a physical uplink shared channel or a physical
uplink control channel.
[0151] In an embodiment of the present application, the step in
which the power control parameter of the uplink channel is
indicated includes: a closed-loop power control value of the uplink
channel is reset.
[0152] In an embodiment of the present application, a condition for
indicating the power control parameter of the uplink channel is
that the uplink reference signal is used for a non-codebook mode or
a codebook mode.
[0153] In an embodiment of the present application, the
characteristic that the at least one processor is configured to
indicate the power control parameter of the uplink channel further
includes: the power control parameter of the uplink channel is
determined according to a power control parameter of an uplink
reference signal associated with the uplink channel.
[0154] In an embodiment of the present application, the at least
one processor is configured to indicate the power control parameter
of the uplink channel in at least one of the following manners: a
path loss reference signal in the power control parameter of the
uplink channel is determined according to a downlink reference
signal associated with a spatial relation parameter of an uplink
reference signal associated with the uplink channel; the path loss
reference signal in the power control parameter of the uplink
channel is determined according to a path loss reference signal of
the uplink reference signal associated with the uplink channel; an
open-loop power control parameter in the power control parameter of
the uplink channel is determined according to an open-loop power
control parameter of the uplink reference signal associated with
the uplink channel; or a closed-loop power control index in the
power control parameter of the uplink channel is determined
according to a closed-loop power control index of the uplink
reference signal associated with the uplink channel.
[0155] In an embodiment of the present application, the uplink
reference signal associated with the uplink channel is used for a
non-codebook mode or a codebook mode.
[0156] In an embodiment of the present application, the at least
one processor is configured to indicate the power control parameter
of the uplink channel in the following manners: an uplink reference
signal resource indication (SRI) codepoint set is associated with
the power control parameter of the uplink channel; where the SRI
codepoint set is formed by grouping at least one SRI codepoint.
[0157] In an embodiment of the present application, the at least
one processor is further configured to form the SRI codepoint set
by using a bit map.
[0158] In an embodiment of the present application, the at least
one processor is configured to form the SRI codepoint set by using
the bit map in the following manners: at least one SRI codepoint
corresponds to a bit position in the bit map; and in a case where a
value at the bit position in the bit map is a specific value,
corresponding SRI codepoints are selected to form the SRI codepoint
set.
[0159] In an embodiment of the present application, the at least
one processor is configured to indicate the power control parameter
of the uplink channel in at least one of the following manners: an
element index in an open-loop power control parameter set in the
power control parameter of the uplink channel is associated with an
SRI codepoint through the control signaling, or an open-loop power
control parameter value associated with an SRI codepoint is
determined through the control signaling; an element index in a
path loss reference signal set in the power control parameter of
the uplink channel is associated with the SRI codepoint through the
control signaling, or a path loss reference signal index associated
with the SRI codepoint is determined through the control signaling;
or a closed-loop power control index associated with the SRI
codepoint is determined through the control signaling.
[0160] In an embodiment of the present application, the open-loop
power control parameter set is configured by radio resource control
signaling.
[0161] In an embodiment of the present application, the path loss
reference signal set is configured by radio resource control
signaling.
[0162] In an embodiment of the present application, the uplink
transmission control parameter includes a spatial relation
parameter.
[0163] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control signaling in the following manners: the uplink reference
signal is activated or deactivated through the control signaling,
or a spatial relation parameter of the uplink reference signal is
configured; where the uplink reference signal is a semi-persistent
uplink reference signal.
[0164] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control signaling in the following manners: a spatial relation
parameter of the uplink reference signal is configured through the
control signaling; where the uplink reference signal is an
aperiodic uplink reference signal.
[0165] In an embodiment of the present application, the control
signaling includes a grouping index in a case where a reference
signal with which the spatial relation parameter is associated is a
downlink reference signal.
[0166] In an embodiment of the present application, the control
signaling includes a grouping index in a case where the uplink
reference signal is used for beam management or antenna
switching.
[0167] In an embodiment of the present application, the spatial
relation parameter is selected from an spatial relation parameter
set, where the spatial relational parameter set is configured by
radio resource control signaling.
[0168] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control signaling in the following manners: in a case where an
aperiodic uplink reference signal is triggered through the control
signaling, a spatial relation parameter associated with the
triggered uplink reference signal is determined according to a
spatial relation parameter at a transmission moment of downlink
control information (DCI) of the triggered uplink reference signal
or a downlink control channel of the triggered uplink reference
signal.
[0169] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control signaling in the following manners: in a case where an
aperiodic uplink reference signal is triggered through the control
instruction, a spatial relation parameter associated with the
triggered uplink reference signal is determined according to a
spatial relation parameter at a sending moment of the triggered
uplink reference signal.
[0170] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control signaling in the following manners: in a case where an
aperiodic uplink reference signal is triggered through the control
instruction, a spatial relation parameter associated with the
triggered uplink reference signal is determined according to a
spatial relation parameter at an initial sending moment of an
uplink reference signal resource set associated with a triggering
state of the triggered uplink reference signal.
[0171] In an embodiment of the present application, the at least
one processor is configured to indicate the uplink transmission
control parameter of the uplink reference signal through the
control instruction in the following manners: in a case where the
aperiodic uplink reference signal is triggered through the control
signaling, a spatial relation parameter associated with the
triggered uplink reference signal is determined according to a
spatial relation parameter at an initial sending moment of at least
one uplink reference signal resource set associated with the
triggered uplink reference signal.
[0172] In an embodiment of the present application, the at least
one uplink reference signal resource set associated with the uplink
reference signal is used for antenna switching.
[0173] In an embodiment of the present application, the control
signaling includes media access control-control element (MAC-CE)
signaling.
[0174] In an embodiment of the present application, the uplink
reference signal includes a channel sounding reference signal, a
phase tracking reference signal, and a physical random access
channel.
[0175] In an embodiment of the present application, an effective
time of an indication of the control signaling is determined by a
sending time of hybrid automatic repeat request-acknowledgement
(HARQ-ACK) signaling associated with a physical downlink shared
channel carrying the control signaling.
[0176] The present application further provides a transmission
indication apparatus. FIG. 7 is a schematic structural diagram of
another transmission indication apparatus provided in the present
application. As shown in FIG. 7, the transmission indication
apparatus provided in the embodiments of the present application
may be integrated on a base station provided in the embodiments of
the present application, and the transmission indication apparatus
includes a sending module 71, a receiving module 72 and at least
one processor 73. The sending module 71 is configured to send
control signaling to a terminal, where the control signaling is
used for indicating an uplink transmission control parameter of an
uplink reference signal. The receiving module 72 is configured to
receive the uplink reference signal sent by the terminal. The at
least one processor is configured to process the uplink reference
signal.
[0177] The transmission indication apparatus provided in this
embodiment is used for implementing the transmission indication
method in the embodiment shown in FIG. 5, and the implementation
principle and the technical effect of the transmission indication
apparatus integrated on the base station in this embodiment are
similar to those of the transmission indication method of the
embodiment shown in FIG. 5, which however are not to be detailed
here again.
[0178] In an embodiment of the present application, the control
signaling includes media access control-control element (MAC-CE)
signaling.
[0179] In an embodiment of the present application, the uplink
reference signal includes a channel sounding reference signal, a
phase tracking reference signal, and a physical random access
channel.
[0180] An embodiment of the present application further provides a
terminal. The terminal includes the transmission indication
apparatus as provided in FIG. 6 and in the embodiment of the
present application.
[0181] The terminal provided in this embodiment includes the
transmission indication apparatus shown in FIG. 6, and the
implementation principle and the technical effect upon performing
the transmission indication are similar to those of the
transmission indication apparatus shown in the embodiment of FIG.
6, which are not to be detailed here again.
[0182] An embodiment of the present application further provides a
base station. The base station includes the transmission indication
apparatus as provided in FIG. 7 and in the embodiment of the
present application.
[0183] The base station provided in this embodiment includes the
transmission indication apparatus shown in FIG. 7, and the
implementation principle and the technical effect upon performing
the transmission indication are similar to those of the
transmission indication apparatus shown in the embodiment of FIG.
7, which however are not to be detailed here again.
[0184] An embodiment of the present application further provides a
storage medium, a computer program is stored in the storage medium,
and the computer program, when executed by a processor, performs
the transmission indication method of any one of the embodiments of
the present application, such as the transmission indication method
applied to the terminal and the transmission indication method
applied to the base station. The transmission indication method is
applied to the terminal and includes: control signaling sent by a
base station is received; an uplink transmission control parameter
of an uplink reference signal is indicated through the control
signaling; and the uplink reference signal is transmitted based on
the uplink transmission control parameter.
[0185] The transmission indication method applied to the base
station includes: control signaling is sent to a terminal, where
the control signaling is used for indicating an uplink transmission
control parameter of an uplink reference signal; the uplink
reference signal sent by the terminal is received; and the uplink
reference signal is processed.
[0186] The above description is only an exemplary embodiment of the
present application, and is not intended to limit the scope of
protection of the present application.
[0187] The term terminal encompasses any suitable type of wireless
user equipment, such as a mobile telephone, a portable data
processing apparatus, a portable web browser, or an in-vehicle
mobile station.
[0188] The various embodiments of the present application may be
implemented in a hardware or a special purpose circuit, a software,
a logic or any combination thereof. For example, some aspects may
be implemented in hardware, while other aspects may be implemented
in firmware or software which may be executed by a controller, a
microprocessor or other computing apparatus, although the present
application is not limited thereto.
[0189] The embodiments of the present application may be
implemented by the execution of computer program instructions by a
data processor of the mobile apparatus, e.g., in a processor
entity, or by hardware, or by a combination of software and
hardware. The computer program instructions may be assembler
instructions, instruction set architecture (ISA) instructions,
machine instructions, machine dependent instructions, microcodes,
firmware instructions, state-setting data, or either a source code
or an object code written in any combination of one or more
programming languages.
[0190] Any block diagram of the logic flow in the accompanying
drawings of the present application may represent program steps, or
may represent interconnected logic circuits, modules, and
functions, or may represent a combination of program steps and
logic circuits, modules, and functions. The computer program may be
stored on a memory. The memory may be of any type suitable for the
local technical environment and may be implemented using any
suitable data storage technology, such as, but not limited to, a
read-only memory (ROM), a random access memory (RAM), an optical
memory apparatus and system (digital video disc (DVD), or a compact
disk (CD)). A computer readable medium may include a
non-instantaneous storage medium. A data processor may be of any
type suitable for the local technical environment, such as, but not
limited to, a general-purpose computer, a specialized computer, a
microprocessor, a digital signal processor (DSP), an application
specific integrated circuit (ASIC), a field-programmable gate array
(FPGA)), and a processor based on a multi-core processor
architecture.
* * * * *