Power control parameter determination method and device, and storage medium

Patent metadata

Field	Value
Publication number	US-12452791-B2
Application number	US-202217870584-A
Country	US
Kind code	B2
Filing date	Jul 21, 2022
Priority date	Jan 21, 2020
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Provided are a method and device for determining a power control parameter, and storage medium. The method includes: determining a beam state of an uplink transmission; and determining, based on the beam state, the power control parameter of the uplink transmission, where the beam state at least includes one of the following: a QCL state, a TCL state, spatial relation information, reference signal information, spatial filter information or precoding information.

First claim

What is claimed is:

1. A method for determining a power control parameter, applied at a first communication node, the method comprising:
determining a beam state for an uplink transmission; and
determining, based on the beam state, the power control parameter of the uplink transmission,
wherein the beam state at least comprises a Transmission Configuration Indication (TCI) state, and wherein the determining, based on the beam state, the power control parameter of the uplink transmission comprises:
determining the power control parameter of the uplink transmission based on an index of the power control parameter comprised in the beam state;
wherein the uplink transmission is a Sounding Reference Signal (SRS) transmission, and wherein the determining, based on the beam state, the power control parameter of the uplink transmission further comprises:
determining a power control parameter of any one SRS resource in an SRS resource set, based on a power control parameter associated with a TCI state corresponding to an SRS resource having a lowest index in the SRS resource set.

2. The method of claim 1 , wherein the beam state is indicated by information of one of the following:
an index of at least one beam state in a specific beam state set,
an index of at least one beam state in activated beam states in the specific beam state set,
a combined index of at least one beam state in the specific beam state set, or
a combined index of at least one beam state in activated beam states in the specific beam state set,
wherein the specific beam state set is configured or activated by at least one of higher layer signaling or Media Access Control (MAC) layer signaling.

3. The method of claim 1 , wherein the beam state for the uplink transmission at least comprises one of the following: a beam state referenced by the uplink transmission; a beam state associated with the uplink transmission; a beam state indicated by Downlink Control Information (DCI) scheduling or triggering the uplink transmission; a beam state configured by higher layer signaling for the uplink transmission; or a beam state associated with a resource of the uplink transmission.

4. The method of claim 1 , wherein the determining, based on the beam state, the power control parameter of the uplink transmission comprises
determining the power control parameter of the uplink transmission based on an association between the beam state and the power control parameter.

5. The method of claim 4 , wherein the association between the beam state and the power control parameter comprises an association element between at least one beam state and the power control parameter, and
wherein an association element between the beam state and a power control parameter comprises at least one of the following:
an index of the association element between the beam state and the power control parameter,
the beam state index, or
the power control parameter index.

6. The method of claim 1 ,
wherein the power control parameter at least comprises at least one of the following: a path-loss measurement parameter, a target received power, a path-loss compensation factor, or a closed loop power control parameter, and
wherein the uplink transmission at least comprises one of the following: a Physical Uplink Shared Channel (PUSCH) transmission, a Physical Uplink Control Channel (PUCCH) transmission, a Sounding Reference Signal (SRS) transmission, or a Physical Random Access Channel (PRACH) transmission.

7. The method of claim 1 , wherein in a case where the beam state is used for a PUSCH transmission, a PUCCH transmission, and an SRS transmission, the power control parameter at least comprises at least one of the following: a path-loss measurement parameter, a target received power of a PUSCH, a path-loss compensation factor of the PUSCH, a closed loop power control parameter of the PUSCH, a target received power of a PUCCH, a closed loop power control parameter of the PUCCH, a target received power of an SRS, or a closed loop power control parameter of the SRS.

8. The method of claim 1 , wherein the beam state comprises at least one of the following: a beam state configured or associated with an SRS resource, a beam state for an uplink transmission, or a beam state non-dedicated to a downlink transmission.

9. The method of claim 1 , wherein a path-loss measurement parameter comprised in or associated with the beam state is used to determine a path-loss measurement parameter of at least one of the following uplink transmissions: a PUSCH transmission, a PUCCH transmission, an SRS transmission, or a PRACH transmission.

10. A device comprising a memory and at least one processor,
the memory being configured to store at least one program,
the at least one program, when executed by the at least one processor, causing the at least one processor to implement the method of claim 1 .

11. A method for determining a power control parameter, applied at a second communication node, the method comprising:
configuring or activating a specific beam state set; and
configuring or indicating a beam state associated with an uplink transmission, the beam state associated with the uplink transmission being used for determining the power control parameter of the uplink transmission, wherein determining the power control parameter of the uplink transmission using the beam state associated with the uplink transmission comprises:
determining the power control parameter of the uplink transmission based on an index of the power control parameter comprised in the beam state,

wherein the beam state associated with the uplink transmission comprises at least one beam state in the specific beam state set, and
wherein the beam state at least comprises a Transmission Configuration Indication (TCI) state;
wherein the uplink transmission is a Sounding Reference Signal (SRS) transmission, and wherein the determining the power control parameter of the uplink transmission using the beam state associated with the uplink transmission further comprises:
determining a power control parameter of any one SRS resource in an SRS resource set, based on a power control parameter associated with a TCI state corresponding to an SRS resource having a lowest index in the SRS resource set.

12. The method of claim 11 , wherein the determining the power control parameter of the uplink transmission using the beam state associated with the uplink transmission comprises: determining the power control parameter of the uplink transmission based on an association between the beam state and the power control parameter.

13. The method of claim 12 , wherein the association between the beam state and the power control parameter comprises:
an association element between at least one beam state and the power control parameter, and
wherein an association element between the beam state and a power control parameter at least comprises one of the following:
an index of the association element between the beam state and the power control parameter,
the beam state index, or
the power control parameter index.

14. The method of claim 11 ,
wherein the power control parameter at least comprises at least one of the following: a path-loss measurement parameter, a target received power, a path-loss compensation factor, or a closed loop power control parameter, and
wherein the uplink transmission at least comprises one of the following: a Physical Uplink Shared Channel (PUSCH) transmission, a Physical Uplink Control Channel (PUCCH) transmission, a Sounding Reference Signal (SRS) transmission, or a Physical Random Access Channel (PRACH) transmission.

Assignees

• Zte Corp

Inventors

• Yao Ke
• Gao Bo
• Jiang Chuangxin
• Lu Zhaohua
• He Zhen

Classifications

• H04W52/242

  taking into account path loss · CPC title

• H04W52/08

  Closed loop power control · CPC title

• H04W16/28

  using beam steering · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title