Subband-based measurement reporting
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, via multiple UE receive beams, one or more reference signals transmitted over a wideband, the wideband including one or more subbands. The UE may transmit a report based at least in part on one or more measurements of the one or more subbands. Numerous other aspects are described.
1. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors configured to:
receive, via multiple UE receive beams, one or more reference signals transmitted over a wideband, the wideband including one or more subbands;
perform one or more measurements of the one or more subbands based at least in part on the one or more reference signals, a set of preferred subbands for subsequent spatial division multiplexing (SDM) communications being determined based at least in part on the one or more measurements; and
transmit a report based at least in part on the one or more measurements of the one or more subbands, the report comprising an indication of the set of preferred subbands for the subsequent SDM communications.
2. The UE of claim 1 , wherein the one or more processors are further configured to:
receive an indication to transmit the report based at least in part on the one or more measurements of the one or more subbands.
3. The UE of claim 1 , wherein the report comprises an indication of a measurement of the wideband and an indication of the one or more measurements of the one or more subbands.
4. The UE of claim 3 , wherein the indication of the one or more measurements of the one or more subbands comprises an indication of a difference from the measurement of the wideband.
5. The UE of claim 1 , wherein the set of preferred subbands are preferred subbands based at least in part on a measurement of inter-beam interference.
6. The UE of claim 1 , wherein the report comprises an indication of one or more preferred beam pairs for the subsequent SDM communications.
7. The UE of claim 6 , wherein the one or more preferred beam pairs are based at least in part on one or more parameters received from a base station.
8. The UE of claim 1 , wherein the one or more subbands comprise:
one or more subbands configured by a base station, or
one or more subbands configured by the UE.
9. The UE of claim 1 , wherein the one or more processors, when performing the one or more measurements, are configured to:
measure the one or more reference signals simultaneously using the multiple UE receive beams, or
measure the one or more reference signals sequentially using the multiple UE receive beams.
10. A method of wireless communication performed by a user equipment (UE), comprising:
receiving, via multiple UE receive beams, one or more reference signals transmitted over a wideband, the wideband including one or more subbands;
performing one or more measurements of the one or more subbands based at least in part on the one or more reference signals, a set of preferred subbands for subsequent spatial division multiplexing (SDM) communications being determined based at least in part on the one or more measurements; and
transmitting a report based at least in part on the one or more measurements of the one or more subbands, the report comprising an indication of the set of preferred subbands for the subsequent SDM communications.
11. The method of claim 10 , further comprising:
receiving an indication to transmit the report based at least in part on the one or more measurements of the one or more subbands.
12. The method of claim 10 , wherein the report comprises an indication of a measurement of the wideband and an indication of the one or more measurements of the one or more subbands.
13. The method of claim 12 , wherein the indication of the one or more measurements of the one or more subbands comprises an indication of a difference from the measurement of the wideband.
14. The method of claim 10 , wherein the set of preferred subbands are preferred subbands based at least in part on a measurement of inter-beam interference.
15. The method of claim 10 , wherein the report comprises an indication of one or more preferred beam pairs for the subsequent SDM communications.
16. The method of claim 15 , wherein the one or more preferred beam pairs are based at least in part on one or more parameters received from a base station.
17. The method of claim 10 , wherein the one or more subbands comprise:
one or more subbands configured by a base station, or
one or more subbands configured by the UE.
18. The method of claim 10 , wherein performing the one or more measurements comprises:
measuring the one or more reference signals simultaneously using the multiple UE receive beams, or
measuring the one or more reference signals sequentially using the multiple UE receive beams.
19. 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:
receive, via multiple UE receive beams, one or more reference signals transmitted over a wideband, the wideband including one or more subbands;
perform one or more measurements of the one or more subbands based at least in part on the one or more reference signals, a set of preferred subbands for subsequent spatial division multiplexing (SDM) communications being determined based at least in part on the one or more measurements; and
transmit a report based at least in part on one or more measurements of the one or more subbands, the report comprising an indication of the set of preferred subbands for the subsequent SDM communications.
20. The non-transitory computer-readable medium of claim 19 , wherein the one or more instructions further cause the UE to:
receive an indication to transmit the report based at least in part on the one or more measurements of the one or more subbands.
21. The non-transitory computer-readable medium of claim 19 , wherein the report comprises an indication of a measurement of the wideband and an indication of the one or more measurements of the one or more subbands.
22. The non-transitory computer-readable medium of claim 21 , wherein the indication of the one or more measurements of the one or more subbands comprises an indication of a difference from the measurement of the wideband.
23. The non-transitory computer-readable medium of claim 19 , wherein the set of preferred subbands are preferred subbands based at least in part on a measurement of inter-beam interference.
24. The non-transitory computer-readable medium of claim 19 , wherein the report comprises an indication of one or more preferred beam pairs for the SDM communications.
25. The non-transitory computer-readable medium of claim 24 , wherein the one or more preferred beam pairs are based at least in part on one or more parameters received from a base station.
26. An apparatus for wireless communication, comprising:
means for receiving, via multiple apparatus receive beams, one or more reference signals transmitted over a wideband, the wideband including one or more subbands;
means for performing one or more measurements of the one or more subbands based at least in part on the one or more reference signals, a set of preferred subbands for subsequent spatial division multiplexing (SDM) communications being determined based at least in part on the one or more measurements; and
means for transmitting a report based at least in part on one or more measurements of the one or more subbands, the report comprising an indication of the set of preferred subbands for the subsequent SDM communications.
27. The apparatus of claim 26 , further comprising:
means for receiving an indication to transmit the report based at least in part on the one or more measurements of the one or more subbands.
28. The apparatus of claim 26 , wherein the report comprises an indication of a measurement of the wideband and an indication of the one or more measurements of the one or more subbands.
29. The apparatus of claim 28 , wherein the indication of the one or more measurements of the one or more subbands comprises an indication of a difference from the measurement of the wideband.
30. The apparatus of claim 26 , wherein the set of preferred subbands are preferred subbands based at least in part on a measurement of inter-beam interference.