Power control method and device

Patent metadata

Field	Value
Publication number	US-12245158-B2
Application number	US-202217569907-A
Country	US
Kind code	B2
Filing date	Jan 6, 2022
Priority date	Jul 12, 2019
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A power control method and a device are provided. The method is applied to a terminal device. The method includes: receiving configuration information from a network device, where the configuration information is used to indicate target spatial relation information of target uplink data; and determining transmit power of the target uplink data based on the target spatial relation information, where the target spatial relation information includes at least one of the following: M power control parameters, a target power control parameter corresponding to the target spatial relation information, and information used to indicate the target power control parameter, where M is a positive integer; and the target uplink data includes a sounding reference signal SRS or a physical uplink shared channel PUSCH.

First claim

What is claimed is:

1. A power control method, wherein the method comprises:
receiving, by a terminal, configuration information from a network device, wherein the configuration information is used to indicate target spatial relation information of target uplink data; and
determining, by the terminal, transmit power of the target uplink data based on the target spatial relation information; wherein
the target spatial relation information comprises at least one of the following: M power control parameters, a target power control parameter corresponding to the target spatial relation information, and information used to indicate the target power control parameter, wherein M is a positive integer; and
the target uplink data comprises a sounding reference signal SRS or a physical uplink shared channel PUSCH;
wherein if no path loss calculation reference reference signal is configured for the target power control parameter, a reference signal quasi co-located with a control resource set is used as a path loss calculation reference reference signal.

2. The method according to claim 1 , wherein in a case that the target spatial relation information comprises the M power control parameters and the information used to indicate the target power control parameter, the target power control parameter is at least one of the M power control parameters.

3. The method according to claim 1 , wherein in a case that the target uplink data is the SRS, the target spatial relation information comprises at least one of the following: an SRS power control parameter set and an identifier of the SRS power control parameter set, and the SRS power control parameter set comprises the target power control parameter.

4. The method according to claim 1 , wherein in a case that the target uplink data is the PUSCH, the target spatial relation information comprises at least one of the following: a PUSCH power control parameter set, a PUSCH power control parameter set identifier, and a target SRI, wherein the PUSCH power control parameter set comprises the target power control parameters, the PUSCH power control parameter set identifier comprises an identifier of the target power control parameter, and the target SRI is used to indicate the PUSCH power control parameter set identifier.

5. The method according to claim 1 , wherein the M power control parameters are preconfigured by the network device for the terminal device or predefined.

6. The method according to claim 1 , wherein
the configuration information is used to indicate at least one SRS resource, and the at least one SRS resource comprises the target spatial relation information, wherein the configuration information is carried in a target MAC CE, and the at least one SRS resource is an SRS resource corresponding to the target MAC CE; and/or the configuration information comprises a SRS resource indicator (SRI) of the at least one SRS resource.

7. The method according to claim 1 , wherein any power control parameter comprises at least one of the following: preset receive power of the network device, a path loss compensation factor, a path loss calculation reference reference signal, and a closed loop power control process, wherein in a case that the target spatial relation information comprises a target signal, the target signal is the path loss calculation reference reference signal.

8. A terminal device, comprising a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the power control method are implemented, the method comprises:
receiving, by a terminal, configuration information from a network device, wherein the configuration information is used to indicate target spatial relation information of target uplink data; and
determining, by the terminal, transmit power of the target uplink data based on the target spatial relation information; wherein
the target spatial relation information comprises at least one of the following: M power control parameters, a target power control parameter corresponding to the target spatial relation information, and information used to indicate the target power control parameter, wherein M is a positive integer; and
the target uplink data comprises a sounding reference signal SRS or a physical uplink shared channel PUSCH;
wherein if no path loss calculation reference reference signal is configured for the target power control parameter, a reference signal quasi co-located with a control resource set is used as a path loss calculation reference reference signal.

9. The terminal device according to claim 8 , wherein in a case that the target spatial relation information comprises the M power control parameters and the information used to indicate the target power control parameter, the target power control parameter is at least one of the M power control parameters.

10. The terminal device according to claim 8 , wherein in a case that the target uplink data is the SRS, the target spatial relation information comprises at least one of the following: an SRS power control parameter set and an identifier of the SRS power control parameter set, and the SRS power control parameter set comprises the target power control parameter.

11. The terminal device according to claim 8 , wherein in a case that the target uplink data is the PUSCH, the target spatial relation information comprises at least one of the following: a PUSCH power control parameter set, a PUSCH power control parameter set identifier, and a target SRI, wherein the PUSCH power control parameter set comprises the target power control parameters, the PUSCH power control parameter set identifier comprises an identifier of the target power control parameter, and the target SRI is used to indicate the PUSCH power control parameter set identifier.

12. The terminal device according claim 8 , wherein the M power control parameters are preconfigured by the network device for the terminal device or predefined.

13. A network device, comprising a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the power control method are implemented, the method comprises:
transmitting configuration information to a terminal device, wherein the configuration information is used to indicate target spatial relation information of target uplink data, wherein
the target spatial relation information comprises at least one of the following: M power control parameters, a target power control parameter corresponding to the target spatial relation information, and information used to indicate the target power control parameter, wherein M is a positive integer; and
the target uplink data comprises a sounding reference signal SRS or a physical uplink shared channel PUSCH;
wherein if no path loss calculation reference reference signal is configured for the target power control parameter, a reference signal quasi co-located with a control resource set is used as a path loss calculation reference reference signal.

14. The network device according to claim 13 , wherein in a case that the target spatial relation information comprises the M power control parameters and the information used to indicate the target power control parameter, the target power control parameter is at least one of the M power control parameters.

15. The network device according to claim 13 , wherein in a case that the target uplink data is the SRS, the target spatial relation information comprises at least one

Assignees

• Vivo Mobile Communication Co Ltd

Inventors

• Sun Xiaodong
• Yang Yu
• Sun Peng

Classifications

• H04W52/325 Primary

  Power control of control or pilot channels · CPC title

• H04W52/242

  taking into account path loss · CPC title

• H04W16/28

  using beam steering · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04W72/231

  the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling · CPC title