Uplink measurement reference signal power control method, network device, and terminal device

Patent metadata

Field	Value
Publication number	US-11012948-B2
Application number	US-201916523752-A
Country	US
Kind code	B2
Filing date	Jul 26, 2019
Priority date	Jan 26, 2017
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

An uplink measurement reference signal power control method, a network device, and a terminal device are provided. The method includes: generating, by the network device, power control information of an uplink measurement reference signal, where the power control information includes at least one of a transmit power target value, a transmit power adjustment value, or path loss information; and sending, by the network device, the power control information to the terminal device. According to the method provided in the embodiments of this application, the network device generates the power control information, and the power control information includes at least one of the foregoing three types of information and is indicated to the terminal device.

First claim

What is claimed is:

1. A method for controlling power of a sounding reference signal (SRS), applied to a network device, the method comprising:
generating, by the network device, power control information and forming information, which is associated with the power control information, for each set of SRSs sharing one or more attributes,
wherein the power control information comprises path loss information comprising an index of a first downlink measurement reference resource that is referenced for determining a path loss, and
wherein the forming information comprises an index of a second downlink measurement reference resource; and

sending, by the network device, the power control and forming information to a terminal device for use by the terminal device to send the SRS.

2. The method according to claim 1 , wherein the path loss information further comprises at least one of the following: a path loss value, a reference signal received power (RSRP) value.

3. The method according to claim 1 , further comprising configuring separate power control information and forming information for each of a plurality of uplink measurement reference signal resources.

4. The method according to claim 1 , wherein the forming information further comprises at least one of the following: a codebook index value, or quantized channel information.

5. A method for controlling power of a sounding reference signal (SRS), applied to a terminal device, the method comprising:
receiving, by the terminal device, power control and forming information for the SRS,
wherein the power control information comprises path loss information comprising an index of a first downlink measurement reference resource that is referenced for determining a path loss, and
wherein the forming information comprises an index of a second downlink measurement reference resource; and

sending, by the terminal device, the SRS to a network device based on the power control and forming information.

6. The method according to claim 5 , wherein the path loss information further comprises at least one of the following: a path loss value, a reference signal received power (RSRP) value.

7. The method according to claim 5 , further comprising obtaining separate power control information and forming information for each of a plurality of SRSs.

8. The method according to claim 5 , wherein the forming information further comprises a codebook index value, or quantized channel information.

9. An apparatus controlling power of a sounding reference signal (SRS), the apparatus comprising:
at least one processor configured to generate power control information and forming information, which is associated with the power control information, for each set of SRSs sharing one or more attributes,
wherein the power control information comprises path loss information comprising an index of a first downlink measurement reference resource that is referenced for determining a path loss, and
wherein the forming information comprises an index of a second downlink measurement reference resource; and

a transmitter configured to cooperate with the at least one processor to send the power control and forming information to a terminal device for use by the terminal device to send the SRS.

10. The apparatus according to claim 9 , wherein the path loss information further comprises at least one of the following: a path loss value, a reference signal received power (RSRP) value.

11. The apparatus according to claim 9 , wherein the at least one processor is further configured to configure separate power control information and forming information for each of a plurality of uplink measurement reference signal resources.

12. The apparatus according to claim 9 , wherein the forming information further comprises at least one of the following: a codebook index value, and quantized channel information; and
the transmitter is further configured to cooperate with the at least one processor to send the forming information to the terminal device.

13. An apparatus for controlling power of a sounding reference signal (SRS), the apparatus comprising:
a receiver configured to cooperate with at least one processor to receive power control and forming information for the SRS,
wherein the power control information comprises path loss information comprising an index of a first downlink measurement reference resource that is referenced for determining a path loss, and
wherein the forming information comprises an index of a second downlink measurement reference resource;

the at least one processor configured to generate the SRS based on the power control and forming information; and
a transmitter configured to cooperate with the at least one processor to send the SRS to the network device.

14. The apparatus according to claim 13 , wherein the path loss information further comprises at least one of the following: a path loss value, a reference signal received power (RSRP) value.

15. The apparatus according to claim 13 , wherein the at least one processor is configured to obtain separate power control and forming information for each of a plurality of SRSs.

16. The apparatus according to claim 13 , wherein the forming information further comprises a codebook index value, or quantized channel information.

Assignees

• Huawei Tech Co Ltd
• Huawei Teclinologies Co Ltd

Inventors

• Zhang Leiming
• Lei Ming
• Liu Yifan

Classifications

• H04W52/325 Primary

  Power control of control or pilot channels · CPC title

• H04W52/245 Primary

  taking into account received signal strength · CPC title

• H04W52/242 Primary

  taking into account path loss · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04B17/318

  Received signal strength · CPC title