Transmitting uplink control information on physical uplink control channels using different transmit powers
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a message scheduling transmission, by the UE, of uplink control information (UCI) in a physical uplink control channel (PUCCH) resource. The UE may receive an indication that the UE is scheduled to transmit the UCI in the PUCCH resource to both a first transmission-reception point (TRP) and a second TRP. The UE may also receive a first set of uplink power control parameters for transmitting the UCI to the first TRP and a second set of uplink power control parameters for transmitting the UCI to the second TRP. The UE may transmit the UCI to the first TRP and to the second TRP in the PUCCH resource, based on the first set and the second set of uplink power control parameters, and without an uplink control channel beam indication.
1. A method for wireless communication at a user equipment (UE), comprising:
receiving a radio resource control message comprising one or more sets of uplink power control parameters for a physical uplink control channel resource, wherein each set of the one or more sets of uplink power control parameters comprises an uplink power control parameter set identifier, a physical uplink control channel power index value, a pathloss reference signal index value, a closed loop index value, or a combination thereof;
receiving a message scheduling transmission, by the UE, of uplink control information in the physical uplink control channel resource;
receiving an indication that the UE is scheduled to transmit the uplink control information in the physical uplink control channel resource to both a first transmission-reception point and a second transmission-reception point;
receiving a medium access control-control element message comprising a physical uplink control channel resource identifier and one or more uplink power control parameter set identifiers;
activating the one or more sets of uplink power control parameters for the physical uplink control channel resource based at least in part on the physical uplink control channel resource identifier and the one or more uplink power control parameter set identifiers; and
transmitting the uplink control information to the first transmission-reception point and to the second transmission-reception point in the physical uplink control channel resource based at least in part on activating the one or more sets of uplink power control parameters and without an uplink control channel beam indication to the UE.
2. The method of claim 1 , further comprising:
receiving signaling comprising a set of physical uplink control channel spatial relation information;
selecting at least two physical uplink control channel spatial relation information from the set of physical uplink control channel spatial relation information based at least in part on the medium access control-control element message, the at least two physical uplink control channel spatial relation information comprising first physical uplink control channel spatial relation information and second physical uplink control channel spatial relation information; and
determining a first set of uplink power control parameters and a second set of uplink power control parameters for the physical uplink control channel resource based at least in part on the at least two physical uplink control channel spatial relation information.
3. The method of claim 2 , wherein a set of uplink beam parameters is not configured in the set of physical uplink control channel spatial relation information.
4. The method of claim 2 , further comprising:
refraining from applying a set of uplink beam parameters associated with the set of physical uplink control channel spatial relation information.
5. The method of claim 2 , wherein a set of uplink beam parameters associated with the set of physical uplink control channel spatial relation information is nulled.
6. The method of claim 2 , wherein a set of uplink beam parameters comprises a synchronization signal block parameter, a channel state information reference signal parameter, or a sounding reference signal parameter, or a combination thereof.
7. The method of claim 1 , further comprising:
determining that each physical uplink control channel resource associated with a physical uplink control channel transmission is configured with a single set of uplink power control parameters based at least in part on the radio resource control message; and
transmitting the uplink control information to the first transmission-reception point and to the second transmission-reception point based at least in part on the single set of uplink power control parameters.
8. The method of claim 1 , further comprising:
determining that each physical uplink control channel resource associated with a physical uplink control channel transmission is configured with multiple set of uplink power control parameters based at least in part on the radio resource control message, wherein the multiple set of uplink power control parameters comprises a first set of uplink power control parameters and a second set of uplink power control parameters.
9. The method of claim 1 , further comprising:
determining a first set of uplink power control parameters comprising a first physical uplink control channel power index value, a first pathloss reference signal index value, or a first closed loop index value, or a combination thereof; and
determining a second set of uplink power control parameters based at least in part on the first set of uplink power control parameters, the second set of uplink power control parameters comprising a second physical uplink control channel power index value, a second pathloss reference signal index value, or a second closed loop index value, or a combination thereof.
10. The method of claim 7 , wherein determining the second set of uplink power control parameters is based at least in part on a set of uplink beam parameters comprising a reference signal index value.
11. The method of claim 7 , wherein determining the second set of uplink power control parameters is based at least in part on a radio resource control configuration.
12. The method of claim 11 , wherein the radio resource control configuration is per serving cell and each physical uplink control channel resource is configured per the serving cell.
13. The method of claim 11 , wherein the radio resource control configuration is per BWP and each physical uplink control channel resource is configured per the BWP.
14. The method of claim 11 , wherein the radio resource control configuration is per physical uplink control channel resource.
15. The method of claim 1 , wherein transmitting the uplink control information comprises:
transmitting the uplink control information to the first transmission-reception point and to the second transmission-reception point via one of intra-uplink control channel resource beam hopping, intra-slot repetition, or inter-slot repetition based at least in part on a number of repetitions associated with transmitting the uplink control information.
16. An apparatus for wireless communication at a user equipment (UE), comprising:
at least one processor; and
memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to:
receive a radio resource control message comprising one or more sets of uplink power control parameters for a physical uplink control channel resource, wherein each set of the one or more sets of uplink power control parameters comprises an uplink power control parameter set identifier, a physical uplink control channel power index value, a pathloss reference signal index value, a closed loop index value, or a combination thereof;
receive a message scheduling transmission, by the UE, of uplink control information in the physical uplink control channel resource;
receive an indication that the UE is scheduled to transmit the uplink control information in the physical uplink control channel resource to both a first transmission-reception point and a second transmission-reception point;
receive a medium access control-control element message comprising a physical uplink control channel resource identifier and one or more uplink power control parameter set identifiers;
activate the one or more sets of uplink power control parameters for the physical uplink control channel resource based at least in part on the physical uplink control channel resource identifier and the one or more uplink power control parameter set identifiers; and
transmit the uplink control information to the first transmission-reception point and to the second transmission-reception point in the physical uplink control channel resource based at least in part on activating the one or more sets of uplink power control parameters and without an uplink control channel beam indication to the UE.
17. The apparatus of claim 16 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:
receive signaling comprising a set of physical uplink control channel spatial relation information;
select at least two physical uplink control channel spatial relation information from the set of physical uplink control channel spatial relation information based at least in part on the medium access control-control element message, the at least two physical uplink control channel spatial relation information comprising first physical uplink control channel spatial relation information and second physical uplink control channel spatial relation information; and
determine a first set of uplink power control parameters and a second set of uplink power control parameters for the physical uplink control channel resource based at least in part on the at least two physical uplink control channel spatial relation information.
18. The apparatus of claim 17 , wherein a set of uplink beam parameters is not configured in the set of physical uplink control channel spatial relation information.
19. The apparatus of claim 17 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:
refrain from applying a set of uplink beam parameters associated with the set of physical uplink control channel spatial relation information.
20. The apparatus of claim 17 , wherein a set of uplink beam parameters associated with the set of physical uplink control channel spatial relation information is nulled.
21. The apparatus of claim 17 , wherein a set of uplink beam parameters comprises a synchronization signal block parameter, a channel state information reference signal parameter, or a sounding reference signal parameter, or a combination thereof.
22. The apparatus of claim 16 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:
determine that each physical uplink control channel resource associated with a physical uplink control channel transmission is configured with a single set of uplink power control parameters based at least in part on the radio resource control message; and
transmit the uplink control information to the first transmission-reception point and to the second transmission-reception point based at least in part on the single set of uplink power control parameters.
23. The apparatus of claim 16 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:
determine that each physical uplink control channel resource associated with a physical uplink control channel transmission is configured with multiple set of uplink power control parameters based at least in part on the radio resource control message, wherein the multiple set of uplink power control parameters comprises a first set of uplink power control parameters and a second set of uplink power control parameters.
24. The apparatus of claim 16 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:
determine a first set of uplink power control parameters comprising a first physical uplink control channel power index value, a first pathloss reference signal index value, or a first closed loop index value, or a combination thereof; and
determine a second set of uplink power control parameters based at least in part on the first set of uplink power control parameters, the second set of uplink power control parameters comprising a second physical uplink control channel power index value, a second pathloss reference signal index value, or a second closed loop index value, or a combination thereof.
25. The apparatus of claim 24 , wherein determining the second set of uplink power control parameters is based at least in part on a set of uplink beam parameters comprising a reference signal index value.
26. The apparatus of claim 24 , wherein determining the second set of uplink power control parameters is based at least in part on a radio resource control configuration.
27. The apparatus of claim 16 , wherein the radio resource control configuration is per serving cell and each physical uplink control channel resource is configured per the serving cell.
28. The apparatus of claim 16 , wherein the radio resource control configuration is per bandwidth part and each physical uplink control channel resource is configured per the bandwidth part.
29. The apparatus of claim 16 , wherein the radio resource control configuration is per physical uplink control channel resource.
30. The apparatus of claim 16 , wherein the instructions to transmit the uplink control information are executable by the at least one processor to cause the apparatus to:
transmit the uplink control information to the first transmission-reception point and to the second transmission-reception point via one of intra-uplink control channel resource beam hopping, intra-slot repetition, or inter-slot repetition based at least in part on a number of repetitions associated with transmitting the uplink control information.