Uplink power control configuration
Certain aspects of the present disclosure relate to communication systems, and more particularly, to uplink transmit power control techniques.
1. A method for wireless communications by a user equipment (UE), comprising:
obtaining a first parameter, wherein the first parameter comprises a sounding reference signal (SRS) resource indicator (SRI) value;
obtaining a second parameter based at least in part on the first parameter;
obtaining a third parameter based at least in part on the first parameter, wherein the third parameter comprises an open-loop power control index;
determining transmit power for a physical uplink shared channel (PUSCH) transmission based at least part on the first, second, and third parameters; and
transmitting the PUSCH, using the transmit power.
2. The method of claim 1 , wherein the second parameter comprises at least one of an indication of a downlink reference signal or an indication of a power control process.
3. The method of claim 2 , further comprising receiving signaling indicating at least one of:
a mapping of the SRI value to the indication of the downlink reference signal; or
a mapping of the SRI value to the open-loop power control index.
4. The method of claim 3 , wherein the signaling comprise radio resource control (RRC) signaling.
5. The method of claim 1 , wherein the open-loop power control index used to obtain a combination of parameter values used to calculate the transmit power.
6. The method of claim 5 , wherein the second parameter comprises a downlink reference signal index value.
7. The method of claim 6 , wherein the downlink reference signal index value corresponds to one among a synchronization signal block (SSB) resource index and a channel state information reference signal (CSI-RS) resource index.
8. The method of claim 1 , wherein the SRI value is obtained via a downlink control information (DCI) transmission that schedules the PUSCH transmission.
9. An apparatus for wireless communications, comprising:
means for obtaining a first parameter, wherein the first parameter comprises a sounding reference signal (SRS) resource indicator (SRI) value;
means for obtaining a second parameter based at least in part on the first parameter;
means for obtaining a third parameter based at least in part on the first parameter, wherein the third parameter comprises an open-loop power control index;
means for determining transmit power for a physical uplink shared channel (PUSCH) transmission based at least part on the first, second, and third parameters; and
means for transmitting the PUSCH, using the transmit power.
10. The apparatus of claim 9 , wherein the second parameter comprises at least one of an indication of a downlink reference signal or an indication of a power control process.
11. The apparatus of claim 10 , further comprising means for receiving signaling indicating at least one of:
a mapping of the SRI value to the indication of the downlink reference signal; or
a mapping of the SRI value to the open-loop power control index.
12. The apparatus of claim 11 , wherein the signaling comprise radio resource control (RRC) signaling.
13. The apparatus of claim 9 , wherein the open-loop power control index used to obtain a combination of parameter values used to calculate the transmit power.
14. The apparatus of claim 13 , wherein the second parameter comprises a downlink reference signal index value.
15. The apparatus of claim 14 , wherein the downlink reference signal index value corresponds to one among a synchronization signal block (SSB) resource index and a channel state information reference signal (CSI-RS) resource index.
16. The apparatus of claim 9 , wherein the SRI value is obtained via a downlink control information (DCI) transmission that schedules the PUSCH transmission.
17. An apparatus for wireless communications, comprising:
at least one processor configured to:
obtain a first parameter, wherein the first parameter comprises a sounding reference signal (SRS) resource indicator (SRI) value;
obtain a second parameter based at least in part on the first parameter;
obtain a third parameter based at least in part on the first parameter, wherein the third parameter comprises an open-loop power control index; and
determine transmit power for a physical uplink shared channel (PUSCH) transmission based at least part on the first, second, and third parameters; and
a transmitter configured to transmit the PUSCH, using the transmit power.
18. The apparatus of claim 17 , wherein the second parameter comprises at least one of an indication of a downlink reference signal or an indication of a power control process.
19. The apparatus of claim 17 , wherein the SRI value is obtained via a downlink control information (DCI) transmission that schedules the PUSCH transmission.
20. The apparatus of claim 18 , further comprising a receiver configured to receive signaling indicating at least one of:
a mapping of the SRI value to the indication of the downlink reference signal; or
a mapping of the SRI value to the open-loop power control index values.
21. The apparatus of claim 20 , wherein the signaling comprise radio resource control (RRC) signaling.
22. The apparatus of claim 17 , wherein the open-loop power control index used to obtain a combination of parameter values used to calculate the transmit power.
23. The apparatus of claim 22 , wherein the second parameter comprises a downlink reference signal index value.
24. The apparatus of claim 23 , wherein the downlink reference signal index value corresponds to one among a synchronization signal block (SSB) resource index and a channel state information reference signal (CSI-RS) resource index.
25. A non-transitory computer readable medium having instructions stored thereon for:
obtaining a first parameter, wherein the first parameter comprises a sounding reference signal (SRS) resource indicator (SRI) value;
obtaining a second parameter based at least in part on the first parameter;
obtaining a third parameter based at least in part on the first parameter, wherein the third parameter comprises an open-loop power control index;
determining transmit power for a physical uplink shared channel (PUSCH) transmission based at least part on the first, second, and third parameters; and
transmitting the PUSCH, using the transmit power.