Method of power control for uplink transmission

Patent metadata

Field	Value
Publication number	US-12238652-B2
Application number	US-202117644837-A
Country	US
Kind code	B2
Filing date	Dec 17, 2021
Priority date	May 5, 2017
Publication date	Feb 25, 2025
Grant date	Feb 25, 2025

Abstract

A method for uplink transmission by a UE includes obtaining information regarding a plurality of power control sets each having a plurality of power control parameters, wherein a value of at least one parameter in a first power control set is different from a value of the at least one parameter in a second power control set; obtaining information associating at least one of the power control sets with at least one operational property of the UE; and when at least one of the operational properties is in effect on the UE, transmitting a PUSCH using the parameters of the power control set associated with the at least one operational property in effect.

First claim

What is claimed is:

1. A method for uplink transmission, the method comprising:
transmitting, by a user equipment (UE) to a base station, a first sounding reference signal (SRS) according to a first power control set, the first power control set including a first UE-specific SRS initial target power, a first pathloss, a first pathloss compensation factor, and a first transmit power command,
the first power control set being determined based on a first set of operational properties, the first set of operational properties including first resource information for the first SRS, first numerology information for the first SRS, and a first downlink (DL) reference signal (RS) type for first pathloss estimation,
the first numerology information indicating at least a first subcarrier spacing (SCS) for determining the first power control set and a first cyclic prefix (CP) length for determining the first power control set,
the first resource information including at least one of:
a first configured resource index for the first SRS, or
first Quasi-Co-Location (QCL) information with a first downlink Channel State Information Reference Signal (CSI-RS); and

transmitting, by the UE to the base station, a second SRS according to a second power control set, the second power control set including a second UE-specific SRS initial target power, a second pathloss, a second pathloss compensation factor, and a second transmit power command,
the second power control set being determined based on a second set of operational properties, the second set of operational properties including second resource information for the second SRS, second numerology information for the second SRS, and a second DL RS type for second pathloss estimation,
the second numerology information indicating at least a second SCS for determining the second power control set and a second CP length for determining the second power control set,
the second resource information including at least one of:
a second configured resource index for the second SRS, or
second QCL information with a second CSI-RS.

2. The method of claim 1 , wherein the second transmit power command is configured by radio resource control (RRC) signaling with the second power control set for SRS partially derived from the second transmit power command for an associated second physical uplink shared channel (PUSCH).

3. The method of claim 1 , wherein the first transmit power command is configured by RRC signaling with the first power control set for SRS partially derived from the first transmit power command for an associated first PUSCH.

4. The method of claim 1 , wherein the first numerology information comprises a configured numerology for the first SRS.

5. The method of claim 1 , wherein the first UE-specific SRS initial target power, the first pathloss, and the first pathloss compensation factor are determined in accordance with the first numerology information for the first SRS.

6. A method for uplink transmission, the method comprising:
receiving, by a base station, a first sounding reference signal (SRS), wherein the first SRS is transmitted according to a first power control set, the first power control set including a first user equipment (UE)-specific SRS initial target power, a first pathloss, a first pathloss compensation factor, and a first transmit power command,
the first power control set being determined based on a first set of operational properties, the first set of operational properties including first resource information for the first SRS, first numerology information for the first SRS, and a first downlink (DL) reference signal (RS) type for first pathloss estimation,
the first numerology information indicating at least a first subcarrier spacing (SCS) for determining the first power control set and a first cyclic prefix (CP) length for determining the first power control set,
the first resource information including at least one of:
a first configured resource index for the first SRS, or
first Quasi-Co-Location (QCL) information with a first downlink Channel State Information Reference Signal (CSI-RS); and

receiving, by the base station, a second SRS, wherein the second SRS is transmitted according to a second power control set, the second power control set including a second UE-specific SRS initial target power, a second pathloss, a second pathloss compensation factor, and a second transmit power command,
the second power control set being determined based on a second set of operational properties, the second set of operational properties including second resource information for the second SRS, second numerology information for the second SRS, and a second DL RS type for second pathloss estimation,
the second numerology information indicating at least a second SCS for determining the second power control set and a second CP length for determining the second power control set,
the second resource information including at least one of:
a second configured resource index for the second SRS, or
second QCL information with a second CSI-RS.

7. The method of claim 6 , wherein the first transmit power command is configured by radio resource control (RRC) signaling with the first power control set for SRS partially derived from the first transmit power command for an associated first physical uplink shared channel (PUSCH).

8. The method of claim 6 , wherein the first numerology information comprises a configured numerology for the first SRS.

9. The method of claim 6 , wherein the first UE-specific SRS initial target power, the first pathloss, and the first pathloss compensation factor are determined in accordance with the first numerology information for the first SRS.

10. A user equipment (UE) comprising:
at least one processor; and
a non-transitory computer readable storage medium storing programming, the programming including instructions that, when executed by the at least one processor, cause the UE to perform operations including:
transmitting, to a base station, a first sounding reference signal (SRS) according to a first power control set, the first power control set including a first UE-specific SRS initial target power, a first pathloss, a first pathloss compensation factor, and a first transmit power command,
the first power control set being determined based on a first set of operational properties, the first set of operational properties including first resource information for the first SRS, first numerology information for the first SRS, and a first downlink (DL) reference signal (RS) type for first pathloss estimation,
the first numerology information indicating at least a first subcarrier spacing (SCS) for determining the first power control set and a first cyclic prefix (CP) length for determining the first power control set,
the first resource information including at least one of:
a first configured resource index for the first SRS, or
first Quasi-Co-Location (QCL) information with a first downlink Channel State Information Reference Signal (CSI-RS); and

transmitting, to the base station, a second SRS according to a second power control set, the second power control set including a second UE-specific SRS initial target power, a second pathloss, a second pathloss compensation factor, and a second transmit power command,
the second power control set being determined based on a second set of operational properties, the second set of operational properties including second resource information for the second SRS, second numerology information for the second SRS, or a second DL RS type for second pathloss estimation,
the second numerology information indicating at least a second SCS for determining the second power control set

Assignees

• Huawei Tech Co Ltd

Inventors

• Gong Zhengwei
• Maaref Amine
• Cao Yu
• Islam Toufiqul
• Xiao Weimin

Classifications

• H04W52/365 Primary

  Power headroom reporting · CPC title

• H04W52/242 Primary

  taking into account path loss · CPC title

• H04W52/146 Primary

  Uplink power control · CPC title

• H04W52/18

  TPC being performed according to specific parameters · CPC title