CSI enhancement for NR SL and UU
This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for indicating sidelink CSI information to a base station. A UE and a base station may determine a priority of a sidelink CSI report on an uplink channel in association with a priority of one or more of at least one uplink transmission or at least one other sidelink transmission. The sidelink CSI report may correspond to one or more sidelink transmissions between the UE and at least one other UE. The UE may transmit, and the base station may receive, via the uplink channel, the sidelink CSI report based on the priority of the sidelink CSI report on the uplink channel being determined in association with the priority of the one or more of the at least one uplink transmission or the at least one other SL transmission.
1. An apparatus for wireless communication at a user equipment (UE), comprising:
a memory; and
at least one processor coupled to the memory and configured to:
determine a sidelink (SL) channel state information (CSI) report corresponding to one or more SL transmissions between the UE and at least one other UE;
determine a priority of the SL CSI report on an uplink (UL) channel in association with a priority of one or more of at least one UL transmission or at least one other SL transmission; and
transmit, to a base station via the uplink channel, the SL CSI report based on the priority of the SL CSI report on the UL channel in association with the priority of the one or more of the at least one UL transmission or the at least one other SL transmission.
2. The apparatus of claim 1 , wherein the at least one processor is further configured to receive the SL CSI report from the at least one other UE, wherein the SL CSI report is determined based on the reception of the SL CSI report from the at least one other UE.
3. The apparatus of claim 1 , wherein the at least one processor is further configured to generate the SL CSI report at the UE, wherein the SL CSI report is determined based on the generation of the SL CSI report at the UE.
4. The apparatus of claim 3 , wherein the at least one processor is further configured to perform a CSI estimation procedure to generate the SL CSI report at the UE.
5. The apparatus of claim 1 , wherein the priority of the SL CSI report corresponds to a fixed priority level associated with the one or more SL transmissions between the UE and the at least one other UE.
6. The apparatus of claim 1 , wherein the priority of the SL CSI report is based on a priority level of SL data communicated between the UE and the at least one other UE.
7. The apparatus of claim 1 , wherein the at least one processor is further configured to perform a communication associated with a SL-reference signal (SL-RS), wherein the SL CSI report is determined based on the communication associated with the SL-RS.
8. The apparatus of claim 1 , wherein the at least one processor is further configured to multiplex the SL CSI report with at least one other SL CSI report, wherein the transmission of the SL CSI report to the base station is based on the SL CSI report being multiplexed with the at least one other SL CSI report.
9. The apparatus of claim 1 , wherein the at least one processor is further configured to multiplex the SL CSI report with at least one SL hybrid automatic repeat request (HARQ)-acknowledgment (ACK) (HARQ-ACK) transmission, wherein the transmission of the SL CSI report to the base station is based on the SL CSI report being multiplexed with the at least one HARQ-ACK transmission.
10. The apparatus of claim 1 , wherein the at least one processor is further configured to multiplex the SL CSI report with the at least one UL transmission, wherein the transmission of the SL CSI report to the base station is based on the SL CSI report being multiplexed with the at least one UL transmission.
11. The apparatus of claim 10 , wherein the at least one UL transmission includes uplink control information (UCI).
12. The apparatus of claim 10 , wherein the at least one processor is further configured to encode the SL CSI report separately from the at least one UL transmission.
13. The apparatus of claim 1 , wherein the UL channel for transmission of the SL CSI report corresponds to at least one of a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).
14. The apparatus of claim 1 , wherein to transmit the SL CSI report based on the priority of the SL CSI report the at least one processor is further configured to drop the transmission of the SL CSI report based on the priority of the SL CSI report being lower than the priority of the one or more of the at least one UL transmission or the at least one other SL transmission.
15. The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor.
16. An apparatus for wireless communication at a base station, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
determine a priority of a sidelink (SL) channel state information (CSI) report corresponding to one or more SL transmissions between a user equipment (UE) and at least one other UE, the priority of the SL CSI report determined for an uplink (UL) channel in association with a priority of one or more of at least one UL transmission or at least one other SL transmission; and
receive, from the UE on the uplink channel, the SL CSI report based on the priority of the SL CSI report on the UL channel being determined in association with the priority of the one or more of the at least one UL transmission or the at least one other SL transmission.
17. The apparatus of claim 16 , wherein the SL CSI report is received from the at least one other UE via the UE.
18. The apparatus of claim 16 , wherein the SL CSI report is indicative of a CSI estimation performed at the UE or the at least one other UE.
19. The apparatus of claim 16 , wherein the priority of the SL CSI report corresponds to a fixed priority level associated with the one or more SL transmissions between the UE and the at least one other UE.
20. The apparatus of claim 16 , wherein the priority of the SL CSI report is based on a priority level of SL data communicated between the UE and the at least one other UE.
21. The apparatus of claim 16 , wherein the at least one processor is further configured to transmit, to the UE, a trigger for a SL-reference signal (SL-RS), wherein the SL CSI report is received based on the trigger transmitted for the SL-RS.
22. The apparatus of claim 16 , wherein the SL CSI report is multiplexed with at least one other SL CSI report, the reception of the SL CSI report from the UE based on the SL CSI report being multiplexed with the at least one other SL CSI report.
23. The apparatus of claim 16 , wherein the SL CSI report is multiplexed with at least one SL hybrid automatic repeat request (HARQ)-acknowledgment (ACK) (HARQ-ACK) transmission, the reception of the SL CSI report from the UE based on the SL CSI report being multiplexed with the at least one HARQ-ACK transmission.
24. The apparatus of claim 16 , wherein the SL CSI report is multiplexed with the at least one UL transmission, the reception of the SL CSI report from the UE based on the SL CSI report being multiplexed with the at least one UL transmission.
25. The apparatus of claim 24 , wherein the at least one UL transmission includes uplink control information (UCI).
26. The apparatus of claim 24 , wherein the at least one processor is further configured to decode the SL CSI report separately from the at least one UL transmission.
27. The apparatus of claim 16 , wherein the reception of the SL CSI report based on the priority of the SL CSI report includes the SL CSI report being dropped when the priority of the SL CSI report is lower than the priority of the one or more of the at least one UL transmission or the at least one other SL transmission.
28. The apparatus of claim 16 , further comprising a transceiver coupled to the at least one processor.
29. A method of wireless communication at a user equipment (UE), comprising:
determining a sidelink (SL) channel state information (CSI) report corresponding to one or more SL transmissions between the UE and at least one other UE;
determining a priority of the SL CSI report on an uplink (UL) channel in association with a priority of one or more of at least one UL transmission or at least one other SL transmission; and
transmitting, to a base station via the uplink channel, the SL CSI report based on the priority of the SL CSI report on the UL channel in association with the priority of the one or more of the at least one UL transmission or the at least one other SL transmission.
30. A method of wireless communication at a base station, comprising:
determining a priority of a sidelink (SL) channel state information (CSI) report corresponding to one or more SL transmissions between a user equipment (UE) and at least one other UE, the priority of the SL CSI report determined for an uplink (UL) channel in association with a priority of one or more of at least one UL transmission or at least one other SL transmission; and
receiving, from the UE on the uplink channel, the SL CSI report based on the priority of the SL CSI report on the UL channel being determined in association with the priority of the one or more of the at least one UL transmission or the at least one other SL transmission.