Switching across antenna modules with independent boresight directions
Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE transmits capability information corresponding to one or more antenna modules of the UE to a network entity. The capability information may include a quantity of boresight directions associated with each antenna module of the one or more antenna modules. The UE may receive from the network entity, after the capability information is transmitted, an indication of a beam switch and/or an antenna module switch. The beam switch indicates a switch from an active beam to a target beam. The antenna module switch indicates a switch from an active antenna module to a target antenna module.
1. An apparatus for wireless communications, comprising:
at least one memory comprising instructions; and
one or more processors configured, individually or in any combination, to execute the instructions to cause the apparatus to:
output, for transmission, signaling indicating capability information corresponding to one or more antenna modules of the apparatus, wherein the capability information comprises:
a quantity of boresight directions associated with each antenna module of the one or more antenna modules, and
a value of a peak gain in each boresight direction of each antenna module; and
obtain, after the capability information is output, an indication of at least one of:
a beam switch, or
an antenna module switch.
2. The apparatus of claim 1 , wherein each boresight direction of each antenna module corresponds to a direction of a peak gain of the antenna module.
3. The apparatus of claim 1 , wherein:
the beam switch indicates a switch from an active beam to a target beam; and
the target beam is based on the capability information.
4. The apparatus of claim 3 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions to cause the apparatus to perform a beam switching procedure to switch from the active beam to the target beam, in accordance with the beam switch.
5. The apparatus of claim 1 , wherein:
the antenna module switch indicates a switch from an active antenna module of the one or more antenna modules to a target antenna module of the one or more antenna modules; and
the target antenna module is based on the capability information.
6. The apparatus of claim 5 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions to cause the apparatus to perform an antenna module switching procedure to switch from the active antenna module to the target antenna module, in accordance with the antenna module switch.
7. The apparatus of claim 1 , wherein:
each antenna module comprises one or more sets of antennas; and
each set of antennas of each antenna module is associated with a distinct boresight direction.
8. The apparatus of claim 1 , wherein each boresight direction is separated from another boresight direction by an angle threshold value.
9. The apparatus of claim 1 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions to cause the apparatus to output, for transmission, signaling indicating beam information comprising at least one of:
a reference signal received power (RSRP) associated with an active beam of the apparatus; or
a beam report indicating a transmission configuration indicator (TCI) state associated with a network entity.
10. The apparatus of claim 9 , wherein at least one of the beam switch or the antenna module switch is based on the capability information and at least one of:
the beam information; or
reference signal (RS) information indicating a grant of RSs to be communicated by at least one of the apparatus or a network entity.
11. The apparatus of claim 1 , further comprising at least one transceiver, wherein the at least one transceiver is configured to transmit the signaling indicating the capability information and receive the indication of at least one of: the beam switch or the antenna module switch, and wherein the apparatus is configured as a user equipment (UE).
12. An apparatus for wireless communications, comprising:
at least one memory comprising instructions; and
one or more processors configured, individually or in any combination, to execute the instructions to cause the apparatus to:
obtain signaling indicating capability information corresponding to one or more antenna modules of a user equipment (UE), wherein the capability information comprises:
a quantity of boresight directions associated with each antenna module of the one or more antenna modules, and
a value of a peak gain in each boresight direction of each antenna module; and
output, for transmission, after obtaining the capability information, an indication to perform at least one of:
a beam switch, or
an antenna module switch.
13. The apparatus of claim 12 , wherein each boresight direction of each antenna module corresponds to a direction of a peak gain of the antenna module.
14. The apparatus of claim 12 , wherein:
the beam switch indicates a switch from an active beam to a target beam; and
the target beam is based on the capability information.
15. The apparatus of claim 12 , wherein:
the antenna module switch indicates a switch from an active antenna module of the one or more antenna modules to a target antenna module of the one or more antenna modules; and
the target antenna module is based on the capability information.
16. The apparatus of claim 12 , wherein:
each antenna module comprises one or more sets of antennas; and
each set of antennas of each antenna module is associated with a distinct boresight direction.
17. The apparatus of claim 12 , wherein each boresight direction is separated from another boresight direction by an angle threshold value.
18. The apparatus of claim 12 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions to cause the apparatus to obtain signaling indicating beam information comprising at least one of:
a reference signal received power (RSRP) associated with an active beam of the UE; or
a beam report indicating a transmission configuration indicator (TCI) state associated with the apparatus.
19. The apparatus of claim 18 , wherein at least one of the beam switch or the antenna module switch is based on the capability information and at least one of:
the beam information; or
reference signal (RS) information indicating a grant of RSs to be communicated by at least one of the UE or the apparatus.
20. The apparatus of claim 12 , further comprising at least one transceiver, wherein the at least one transceiver is configured to receive the signaling indicating the capability information and transmit the indication to perform at least one of: the beam switch or the antenna module switch, and wherein the apparatus is configured as a network entity.
21. A method for wireless communications at a network node, comprising:
outputting, for transmission, signaling indicating capability information corresponding to one or more antenna modules of the network node, wherein the capability information comprises:
a quantity of boresight directions associated with each antenna module of the one or more antenna modules, and
a value of a peak gain in each boresight direction of each antenna module; and
obtaining, after the capability information is output, an indication of at least one of:
a beam switch, or
an antenna module switch.
22. The method of claim 21 , further comprising:
outputting, for transmission, signaling indicating beam information comprising at least one of:
a reference signal received power (RSRP) associated with an active beam of the apparatus; or
a beam report indicating a transmission configuration indicator (TCI) state associated with a network entity.
23. The method of claim 22 , wherein at least one of the beam switch or the antenna module switch is based on the capability information and at least one of:
the beam information; or
reference signal (RS) information indicating a grant of RSs to be communicated by at least one of the network node or another network node.