Configuring a shared group specific beam

1 . A user equipment (UE), comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive a first configuration from a network device for a shared UE beam based on a downlink (DL) beam and an associated beam identifier (ID) that is group specific;

receive a second configuration from the network device, wherein the second configuration comprises information for reporting to the network device.

2 . The UE of claim 1 , wherein:

the shared UE beam comprises a shared transmit beam, a shared receive beam, or a combination thereof;

the DL beam comprises a DL channel state information (CSI) reference signal (RS) (CSI-RS) beam, a DL synchronization signal block (SSB) beam, or a combination thereof;

or a combination thereof.

3 . The UE of claim 1 , wherein the second configuration UCI comprises a CSI reporting configuration, hybrid automatic repeat request (HARQ) feedback configuration, or a combination thereof, and the CSI reporting configuration comprises configuration information for receiving a first CSI report using sidelink from group members, transmission of a second CSI report to the network device, or a combination thereof.

4 . The UE of claim 1 , wherein the second configuration comprises a combined CSI report that combines a CSI report from each group member UE, a differential CSI report, an averaged CSI report from a sub-set of UEs in a group, or some combination thereof.

5 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a CSI reporting configuration from the network device, and the CSI reporting configuration comprises a configuration to receive a first HARQ report using sidelink from group members and transmission of a second HARQ report to the network device.

6 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a CSI reporting configuration from the network device, and the CSI reporting configuration comprises a configuration to receive a first channel quality information (CQI) report using sidelink from group members and transmission of a second CQI report to the network device.

7 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a CSI reporting configuration comprising a common report quantity, a common report size, or a combination thereof for all group member UEs configured with the shared UE beam based on the DL beam.

8 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a CSI reporting configuration comprising a different report quantity, a different report size, or a combination thereof for each group member UE of group member UEs configured with the shared UE beam based on the DL beam.

9 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a sidelink resource configuration for transmission of a CSI report using a physical sidelink feedback channel (PSFCH), a medium access control (MAC) control element (CE), or over a physical sidelink shared channel (PSSCH).

10 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a sidelink resource configuration for transmission of a CSI report to the network device using a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).

11 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a third configuration comprising information for performing a sidelink (SL) ranging technique to determine relative positioning of group member UEs from a primary UE, and the relative positioning is reported to the network device to determine a subset of beams, a validity of beams, a duration of beams, or some combination thereof.

12 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a fourth configuration corresponding to all group member UEs to transmit HARQ feedback on a dedicated PSFCH resource or a common PSFCH resource using sidelink communications to a primary UE based on reception of a transport block (TB) carrying multicast data.

13 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to determine retransmission of a TB using sidelink communications based on PSFCH feedback from one or more group member UEs.

14 . A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive a first configuration from a network device for a shared user equipment (UE) beam based on a downlink (DL) beam and an associated beam identifier (ID) that is group specific;

receive a second configuration from the network device, wherein the second configuration comprises information for reporting to the network device.

15 . An apparatus for performing a network function, the apparatus comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the apparatus to:

transmit a first configuration to a user equipment (UE) for a shared UE beam based on a downlink (DL) beam and an associated beam identifier (ID) that is group specific;

transmit a second configuration to the UE, wherein the second configuration comprises information for reporting to the apparatus.

16 . A method performed by a user equipment (UE), the method comprising:

receiving a first configuration from a network device for a shared UE beam based on a downlink (DL) beam and an associated beam identifier (ID) that is group specific;

receiving a second configuration from the network device, wherein the second configuration comprises information for reporting to the network device.

17 . The processor of claim 14 , wherein:

the shared UE beam comprises a shared transmit beam, a shared receive beam, or a combination thereof;

the DL beam comprises a DL channel state information (CSI) reference signal (RS) (CSI-RS) beam, a DL synchronization signal block (SSB) beam, or a combination thereof;

or a combination thereof.

18 . The processor of claim 14 , wherein the UCI second configuration comprises a CSI reporting configuration, hybrid automatic repeat request (HARQ) feedback configuration, or a combination thereof, and the CSI reporting configuration comprises configuration information for receiving a first CSI report using sidelink from group members, transmission of a second CSI report to the network device, or a combination thereof.

19 . The processor of claim 14 , wherein the second configuration comprises a combined CSI report that combines a CSI report from each group member UE, a differential CSI report, an averaged CSI report from a sub-set of UEs in a group, or some combination thereof.

20 . The processor of claim 14 , wherein the at least one controller is configured to cause the processor to receive a CSI reporting configuration from the network device, and the CSI reporting configuration comprises a configuration to receive a first HARQ report using sidelink from group members and transmission of a second HARQ report to the network device.