Collision handling for sounding reference signal guard period and a physical uplink shared channel transmission
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the UE, and the PUSCH transmission uses a second set of one or more antenna ports of the UE; and perform an action to mitigate the collision based at least in part on identifying the collision. Numerous other aspects are provided.
1. A method of wireless communication performed by a user equipment (UE), comprising:
identifying a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein:
the SRS transmission includes a first SRS transmission and a second SRS transmission,
the second SRS transmission uses a first set of one or more antenna ports of the UE, and
the PUSCH transmission uses a second set of one or more antenna ports of the UE; and
performing an action to mitigate the collision based at least in part on identifying the collision.
2. The method of claim 1 , wherein the PUSCH transmission and the SRS transmission are configured to be transmitted on a same component carrier.
3. The method of claim 1 , further comprising:
receiving a configuration indicating that an SRS usage includes antenna switching.
4. The method of claim 1 , wherein performing the action comprises:
refraining from transmitting the SRS transmission.
5. The method of claim 4 , wherein the SRS transmission is configured to be transmitted such that a last symbol of the SRS transmission is a last symbol of a first slot, and
wherein the PUSCH transmission is time-division multiplexed with a physical uplink control channel (PUCCH) transmission and is scheduled to be transmitted in a next slot after the first slot.
6. The method of claim 5 , wherein the PUCCH transmission includes at least one of:
a channel state information report,
a layer one (L1) reference signal receive power report, or
an L1 signal-to-interference-plus-noise ratio report.
7. The method of claim 6 , wherein the SRS transmission is a semi-persistent SRS transmission or a periodic SRS transmission.
8. The method of claim 5 , wherein the PUCCH transmission includes at least one of:
a hybrid automatic repeat request,
a link recovery request, or
a scheduling request.
9. The method of claim 8 , wherein the SRS transmission is a semi-persistent SRS transmission, a periodic SRS transmission, or an aperiodic SRS transmission.
10. The method of claim 4 , wherein performing the action comprises:
refraining from transmitting the second SRS transmission; and
dropping each symbol associated with the second SRS transmission.
11. The method of claim 10 , wherein the first SRS transmission uses the second set of antenna ports of the UE, and
wherein performing the action comprises:
transmitting the first SRS transmission.
12. The method of claim 4 , wherein performing the action comprises:
identifying a priority level associated with the SRS transmission;
refraining from transmitting the SRS transmission based at least in part on the priority level; and
transmitting the PUSCH transmission.
13. The method of claim 1 , wherein the SRS transmission is an aperiodic SRS transmission triggered to be transmitted such that a last symbol of the aperiodic SRS transmission is the last symbol of a first slot,
wherein the PUSCH transmission is scheduled to be transmitted in a next slot after the first slot, and
wherein performing the action comprises:
refraining from transmitting the PUSCH transmission.
14. The method of claim 1 , wherein performing the action comprises:
identifying a priority level associated with the SRS transmission;
refraining from transmitting the PUSCH transmission based at least in part on the priority level of the SRS transmission; and
transmitting the SRS transmission.
15. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
identify a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the UE, and the PUSCH transmission uses a second set of one or more antenna ports of the UE; and
perform an action to mitigate the collision based at least in part on identifying the collision.
16. The UE of claim 15 , wherein the PUSCH transmission and the SRS transmission are configured to be transmitted on a same component carrier.
17. The UE of claim 15 , wherein the one or more processors are further configured to:
receive a configuration indicating that an SRS usage includes antenna switching.
18. The UE of claim 15 , wherein the one or more processors, to perform the action, are configured to:
refrain from transmitting the SRS transmission.
19. The UE of claim 18 , wherein the SRS transmission is configured to be transmitted such that a last symbol of the SRS transmission is a last symbol of a first slot, and
wherein the PUSCH transmission is time-division multiplexed with a physical uplink control channel (PUCCH) transmission and is scheduled to be transmitted in a next slot after the first slot.
20. The UE of claim 19 , wherein the PUCCH transmission includes at least one of:
a channel state information report,
a layer one (L1) reference signal receive power report, or
an L1 signal-to-interference-plus-noise ratio report.
21. The UE of claim 20 , wherein the SRS transmission is a semi-persistent SRS transmission or a periodic SRS transmission.
22. The UE of claim 19 , wherein the PUCCH transmission includes at least one of:
a hybrid automatic repeat request,
a link recovery request, or
a scheduling request.
23. The UE of claim 22 , wherein the SRS transmission is a semi-persistent SRS transmission, a periodic SRS transmission, or an aperiodic SRS transmission.
24. The UE of claim 18 , wherein the one or more processors, to perform the action, are configured to:
refrain from transmitting the second SRS transmission; and
drop each symbol associated with the second SRS transmission.
25. The UE of claim 24 , wherein the first SRS transmission uses the second set of antenna ports of the UE, and
wherein the one or more processors, to perform the action, are configured to:
transmit the first SRS transmission.
26. The UE of claim 18 , wherein the one or more processors, to perform the action, are configured to:
identify a priority level associated with the SRS transmission;
refrain from transmitting the SRS transmission based at least in part on the priority level; and
transmit the PUSCH transmission.
27. The UE of claim 15 , wherein the SRS transmission is an aperiodic SRS transmission triggered to be transmitted such that a last symbol of the aperiodic SRS transmission is the last symbol of a first slot,
wherein the PUSCH transmission is scheduled to be transmitted in a next slot after the first slot, and
wherein the one or more processors, to perform the action, are configured to:
refrain from transmitting the PUSCH transmission.
28. The UE of claim 15 , wherein the one or more processors, to perform the action, are configured to:
identify a priority level associated with the SRS transmission;
refrain from transmitting the PUSCH transmission based at least in part on the priority level of the SRS transmission; and
transmit the SRS transmission.
29. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:
identify a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the UE, and the PUSCH transmission uses a second set of one or more antenna ports of the UE; and
perform an action to mitigate the collision based at least in part on identifying the collision.
30. An apparatus for wireless communication, comprising:
means for identifying a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the apparatus, and the PUSCH transmission uses a second set of one or more antenna ports of the apparatus; and
means for performing an action to mitigate the collision based at least in part on identifying the collision.