Collision handling for CSI reporting on PUSCH
Certain aspects of the present disclosure provide techniques for collision handling for channel state information (CSI) reporting on a physical uplink shared channel (PUSCH). A method for wireless communications by a user equipment (UE) is provided. The method generally includes receiving scheduling for at least one CSI reporting transmission and at least one uplink transmission in a same slot. The UE determines to multiplex the at least one CSI and the at least one uplink transmission in the slot or to drop the at least one CSI or the at least one uplink transmission in the slot. The UE transmits in the slot at least one of: the at least one CSI transmission or the at least one uplink transmission based on the determination.
1. A method for wireless communications by a user equipment (UE), comprising:
determining at least one channel state information (CSI) reporting transmission comprising at least one a semi-persistent CSI (SP-CSI) reporting transmission and at least one uplink transmission are scheduled in a same slot; and
multiplexing the at least one CSI reporting transmission and the at least one uplink transmission in the slot or dropping the at least one CSI reporting transmission or the at least one uplink transmission in the slot.
2. The method of claim 1 , wherein the multiplexing comprises time-domain and frequency-domain multiplexing.
3. The method of claim 1 , wherein:
the at least one CSI reporting transmission further comprises at least one of an aperiodic CSI (A-CSI) reporting transmission; and
the at least one uplink transmission comprises at least one of: a scheduling request (SR), a hybrid automatic repeat request (HARQ) feedback, or a data transmission.
4. The method of claim 3 , wherein at least one of:
the SP-CSI reporting transmission, the A-CSI reporting transmission, or the data transmission is scheduled for transmission in a physical uplink shared channel (PUSCH); and
the SR or HARQ feedback is scheduled for transmission in a physical uplink control channel (PUCCH).
5. The method of claim 4 , wherein the multiplexing or dropping comprises multiplexing the at least one CSI reporting transmission and the HARQ feedback in the PUSCH.
6. The method of claim 5 , further comprising dropping the PUCCH.
7. The method of claim 5 , wherein the multiplexing or dropping comprises dropping the SR.
8. The method of claim 5 , further comprising determining a priority associated with the at least one CSI reporting transmission, the SR, and the HARQ feedback, wherein the priority comprises, in ascending order of priority, the at least one CSI reporting transmission, the SR, and the HARQ feedback.
9. The method of claim 5 , further comprising:
transmitting the at least one CSI reporting transmission in the PUSCH; and
transmitting the HARQ feedback in the PUSCH.
10. The method of claim 4 , wherein the multiplexing or dropping comprises dropping the at least one CSI reporting transmission.
11. The method of claim 10 , further comprising multiplexing the HARQ feedback in the PUSCH.
12. The method of claim 10 , wherein the multiplexing or dropping comprises dropping the at least one CSI reporting transmission when the SR is a positive SR.
13. An apparatus for wireless communications, comprising:
means for determining at least one channel state information (CSI) reporting transmission comprising at least one a semi-persistent CSI (SP-CSI) reporting transmission and at least one uplink transmission are scheduled in a same slot; and
means for multiplexing the at least one CSI reporting transmission and the at least one uplink transmission in the slot or dropping the at least one CSI reporting transmission or the at least one uplink transmission in the slot.
14. The apparatus of claim 13 , wherein the multiplexing comprises time-domain and frequency-domain multiplexing.
15. The apparatus of claim 13 , wherein:
the at least one CSI reporting transmission further comprises at least one of an aperiodic CSI (A-CSI) reporting transmission; and
the at least one uplink transmission comprises at least one of: a scheduling request (SR), a hybrid automatic repeat request (HARQ) feedback, or a data transmission.
16. The apparatus of claim 15 , wherein at least one of:
the SP-CSI reporting transmission, the A-CSI reporting transmission, or the data transmission is scheduled for transmission in a physical uplink shared channel (PUSCH); and
the SR or HARQ feedback is scheduled for transmission in a physical uplink control channel (PUCCH).
17. The apparatus of claim 16 , wherein the means for multiplexing or dropping comprises means for multiplexing the at least one CSI reporting transmission and the HARQ feedback in the PUSCH.
18. The apparatus of claim 17 , further comprising means for dropping the PUCCH.
19. The apparatus of claim 17 , wherein the means for multiplexing or dropping comprises means for dropping the SR.
20. The apparatus of claim 17 , further comprising means for determining a priority associated with the at least one CSI reporting transmission, the SR, and the HARQ feedback, wherein the priority comprises, in ascending order of priority, the at least one CSI reporting transmission, the SR, and the HARQ feedback.
21. The apparatus of claim 17 , further comprising:
means for transmitting the at least one CSI reporting transmission in the PUSCH; and
means for transmitting the HARQ feedback in the PUSCH.
22. The apparatus of claim 16 , wherein the means for multiplexing or dropping comprises means for dropping the at least one CSI reporting transmission.
23. The apparatus of claim 22 , further comprising means for multiplexing the HARQ feedback in the PUSCH.
24. The apparatus of claim 22 , wherein the means for dropping comprises means for dropping the at least one CSI reporting transmission when the SR is a positive SR.
25. An apparatus for wireless communications, comprising:
at least one processor coupled with a memory and configured to:
determine at least one channel state information (CSI) reporting transmission comprising at least one a semi-persistent CSI (SP-CSI) reporting transmission and at least one uplink transmission are scheduled in a same slot; and
multiplex the at least one CSI reporting transmission and the at least one uplink transmission in the slot or dropping the at least one CSI reporting transmission or the at least one uplink transmission in the slot.
26. The apparatus of claim 25 , wherein:
the at least one CSI reporting transmission further comprises at least one of an aperiodic CSI (A-CSI) reporting transmission; and
the at least one uplink transmission comprises at least one of: a scheduling request (SR), a hybrid automatic repeat request (HARQ) feedback, or a data transmission.
27. The apparatus of claim 26 , wherein at least one of:
the SP-CSI reporting transmission, the A-CSI reporting transmission, or the data transmission is scheduled for transmission in a physical uplink shared channel (PUSCH); and
the SR or HARQ feedback is scheduled for transmission in a physical uplink control channel (PUCCH).
28. The apparatus of claim 27 , wherein the at least one processor is configured multiplex the at least one CSI reporting transmission and the HARQ feedback in the PUSCH.
29. The apparatus of claim 28 , wherein the transmitter is further configured to drop the PUCCH.
30. A non-transitory computer readable medium having computer executable code stored there for wireless communications by a user equipment (UE), comprising:
code for determining at least one channel state information (CSI) reporting transmission comprising at least one a semi-persistent CSI (SP-CSI) reporting transmission and at least one uplink transmission are scheduled in a same slot; and
code for multiplexing the at least one CSI reporting transmission and the at least one uplink transmission in the slot or dropping the at least one CSI reporting transmission or the at least one uplink transmission in the slot.
31. The method of claim 4 , wherein the multiplexing or dropping comprises multiplexing the at least one CSI reporting transmission and the SR in the PUCCH.