Signaling closed-loop power control for single and multiple transmission/reception points (trps)

Patent metadata

Field	Value
Publication number	US-2024397451-A1
Application number	US-202218262445-A
Country	US
Kind code	A1
Filing date	Jan 21, 2022
Priority date	Jan 25, 2021
Publication date	Nov 28, 2024
Grant date	—

Abstract

A method, network node and wireless device for signaling closed-loop power control for single and multiple transmission/reception points (TRPs) are disclosed. According to one aspect. a method in a network node includes generating at least one a first downlink control information (DCI) message with a first transmit power control (TPC) command field of N bits configured to schedule a physical uplink shared (PUSCH) transmission and a second DCI message with a second TPC command field of M bits configured to schedule a physical downlink shared channel. PDSCH. transmission.

First claim

1 . A network node configured to communicate with a wireless device, WD, the network node comprising
processing circuitry configured to generate at least one of:
a first downlink control information (DCI) message with a first transmit power control (TPC) command field of N bits configured to schedule a physical uplink shared (PUSCH) transmission, the first DCI message further including an indication whether the PUSCH transmission corresponds to at least one of (1) one of a first SRS resource indicator, SRI, field and a first transmission precoding matrix indicator (TPMI) field in the first DCI; and (2) one of a second SRI field and a second TPMI field comprised in the first DCI; and
a second DCI message with a second TPC command field of M bits configured to schedule a physical downlink shared channel, PDSCH, transmission, the second DCI message further including an indication of a physical uplink control channel, PUCCH, resource for uplink transmission of a hybrid automatic repeat request acknowledgement, HARQ-ACK, by the WD ( 22 ) corresponding to at least one of (1) one spatial relation that is one of configured and activated for the PUCCH resource; and (2) two spatial relations that are one of configured and activated for the PUCCH resource; and
a radio interface ( 62 ) in communication with the processing circuitry ( 68 ) and configured to transmit at least one the first DCI message and the second DCI message; and receive at least one of (1) the PUSCH transmission according to a first single TPC command carried in the first TPC command field; and (2) the uplink transmission of HARQ-ACK in the PUCCH resource according to a second single TPC command carried in the second TPC command field.

2 . The network node of claim 1 , wherein the PUSCH transmission corresponding to both the first SRI field and the second SRI field are according to the first single TPC command carried in the first TPC command field.

3 . The network node of claim 1 , wherein the PUSCH transmission corresponding to only the first SRI field are according to the first single TPC command carried in the first TPC command field.

4 . The network node of claim 1 , wherein the PUSCH transmission corresponding to both the first TPMI field and the second TPMI field is according to the first single TPC command carried in the first TPC command field.

5 . The network node of claim 1 , wherein the PUSCH transmission corresponding to only the first TPMI field is according to the first single TPC command carried in the first TPC command field.

6 . The network node of claim 1 , wherein the uplink transmission of HARQ-ACK in the PUCCH resource corresponding to the two spatial relations is according to the second single TPC command carried in the second TPC command field.

7 . The network node of claim 1 , wherein the uplink transmission of HARQ-ACK in the PUCCH resource corresponding to the one spatial relation is according to the second single TPC command carried in the second TPC command field.

8 . A method in a network node configured to communicate with a wireless device, WD, the method comprising:
generating at least one of:
a first downlink control information (DCI) message with a first transmit power control (TPC) command field of N bits configured to schedule a physical uplink shared (PUSCH) transmission, the first DCI message further including an indication whether the PUSCH transmission corresponds to at least one of (1) one of a first SRS resource indicator, SRI, field and a first transmission precoding matrix indicator (TPMI) field in the first DCI; and (2) one of a second SRI field and a second TPMI field comprised in the first DCI; and
a second DCI message with a second TPC command field of M bits configured to schedule a physical downlink shared channel, PDSCH, transmission, the second DCI message further including an indication of a physical uplink control channel, PUCCH, resource for uplink transmission of a hybrid automatic repeat request acknowledgement, HARQ-ACK, by the WD corresponding to at least one of (1) one spatial relation that is one of configured and activated for the PUCCH resource; and (2) two spatial relations that are one of configured and activated for the PUCCH resource;
transmitting at least one of the first DCI message and the second DCI message; and receiving at least one of (1) the PUSCH transmission according to a first single TPC command carried in the first TPC command field; and (2) the uplink transmission of HARQ-ACK in the PUCCH resource according to a second single TPC command carried in the second TPC command field.

9 . The method of claim 8 , wherein the PUSCH transmission corresponding to both the first SRI field and the second SRI field are according to the first single TPC command carried in the first TPC command field.

10 . The method of claim 8 , wherein the PUSCH transmission corresponding to only the first SRI field are according to the first single TPC command carried in the first TPC command field.

11 . The method of claim 8 , wherein the PUSCH transmission corresponding to both the first TPMI field and the second TPMI field is according to the first single TPC command carried in the first TPC command field.

12 . The method of claim 8 , wherein the PUSCH transmission corresponding to only the first TPMI field is according to the first single TPC command carried in the first TPC command field.

13 . The method of claim 8 , wherein the uplink transmission of HARQ-ACK in the PUCCH resource corresponding to the two spatial relations is according to the second single TPC command carried in the second TPC command field.

14 . The method of claim 8 , wherein the uplink transmission of HARQ-ACK in the PUCCH resource corresponding to the one spatial relation is according to the second single TPC command carried in the second TPC command field.

15 . A wireless device, WD, configured to communicate with a network node, the WD comprising:
a radio interface configured to receive at least one of:
a first downlink control information (DCI) message with a first transmit power control (TPC) command field of N bits configured to schedule a physical uplink shared (PUSCH) transmission, the first DCI message further including an indication whether the PUSCH transmission corresponds to at least one of (1) one of a first SRS resource indicator, SRI, field and a first transmission precoding matrix indicator (TPMI) field comprised in the first DCI; and (2) one of a second SRI field and a second TPMI field comprised in the first DCI; and
a second DCI message with a second TPC command field of M bits configured to schedule a physical downlink shared channel, PDSCH, transmission, the second DCI message further including an indication of a physical uplink control channel, PUCCH, resource for uplink transmission of a hybrid automatic repeat request acknowledgement, HARQ-ACK, by the WD corresponding to at least one of (1) one spatial relation that is one of configured or activated for the PUCCH resource; and (2) two spatial relations that are one of configured and activated for the PUCCH resource; and
the radio interface being further configured to:
receive at least one of the first DCI message and the second DCI message; and
transmit at least one of (1) the PUSCH transmission according to a first single TPC command carried in the first TPC command field; and (2) the uplink transmission of HARQ-ACK in the PUCCH resource according to a second single TPC command carried in the second TPC command field.

16 . The WD of claim 15 , wherein the PUSCH transmission corresponding to both the first SRI field a

Assignees

• Ericsson Telefon Ab L M

Inventors

• Gao Shiwei
• Muruganathan Siva

Classifications

• H04W52/08

  Closed loop power control · CPC title

• H04W72/232

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04W72/23

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

• H04W52/58 Primary

  Format of the TPC bits · CPC title

• H04W52/04 Primary

  Transmission power control [TPC] · CPC title