Techniques and apparatuses for switching between a single antenna subarray operation and a multiple antenna subarray operation for different traffic types

1. A method of wireless communication, comprising:

receiving, by a user equipment (UE), an indication of a traffic type, wherein the indication is received via a radiofrequency (RF) band;

configuring the UE to switch from a first antenna subarray operation that uses a first set of antenna subarrays to a second antenna subarray operation that uses a second set of antenna subarrays based at least in part on receiving the indication of the traffic type, wherein the second antenna subarray operation uses a same RF band, for a communication, that is used to receive the indication of the traffic type; and

transmitting, by the UE, the communication using the second antenna subarray operation.

2. The method of claim 1 , wherein the first set of antenna subarrays is a subset of the second set of antenna subarrays, and

wherein the second set of antenna subarrays includes a greater quantity of antenna subarrays than the first set of antenna subarrays.

3. The method of claim 1 , wherein the first set of antenna subarrays is a single antenna subarray.

4. The method of claim 1 , wherein the indication of the traffic type is received from a base station, and wherein the indication includes a control message instructing the UE to switch from the first antenna subarray operation to the second antenna subarray operation.

5. The method of claim 1 , wherein the indication of the traffic type is received from a processor of the UE, and wherein the method further comprises transmitting, to a base station, a request to switch from the first antenna subarray operation to the second antenna subarray operation.

6. The method of claim 5 , wherein the request is transmitted using the first antenna subarray operation.

7. The method of claim 5 , wherein the request is transmitted using the second antenna subarray operation.

8. The method of claim 1 , further comprising:

receiving an indication of termination of a traffic flow associated with the traffic type; and

configuring the UE to switch from the second antenna subarray operation to the first antenna subarray operation based at least in part on receiving the indication of termination of the traffic flow.

9. The method of claim 1 , wherein the traffic type that triggers the second antenna subarray operation is associated with a first traffic requirement that has comparatively different strictness than a second traffic requirement associated with another traffic type associated with the first antenna subarray operation.

10. The method of claim 9 , wherein the traffic type is ultra-reliable low-latency communication (URLLC) traffic, and the first traffic requirement is comparatively stricter than the second traffic requirement.

11. The method of claim 1 , wherein the traffic type is enhanced mobile broadband (eMBB) traffic.

12. The method of claim 1 , wherein the RF band is a sub-6 gigahertz (GHz) band.

13. The method of claim 1 , wherein the RF band is a millimeter wave band.

14. The method of claim 1 , wherein the first set of antenna subarrays is configured with a first beamforming parameter for the first antenna subarray operation; and

wherein configuring the UE comprises configuring a second beamforming parameter of the second set of antenna subarrays for the second antenna subarray operation.

15. The method of claim 14 , wherein the second beamforming parameter causes a second beamwidth that is wider than a first beamwidth caused by the first beamforming parameter.

16. The method of claim 14 , wherein the second beamforming parameter causes a pseudo-omnidirectional antenna pattern.

17. The method of claim 1 , wherein the second set of antenna subarrays includes a greater quantity of antenna subarrays than the first set of antenna subarrays.

18. A user equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:

receive an indication of a traffic type, wherein the indication is received via a radiofrequency (RF) band;

configure the UE to switch from a first antenna subarray operation that uses a first set of antenna subarrays to a second antenna subarray operation that uses a second set of antenna subarrays based at least in part on receiving the indication of the traffic type, wherein the second antenna subarray operation uses a same RF band, for a communication, that is used to receive the indication of the traffic type; and

transmit the communication using the second antenna subarray operation.

19. The UE of claim 18 , wherein the first set of antenna subarrays is a subset of the second set of antenna subarrays.

20. The UE of claim 18 , wherein the first set of antenna subarrays is a single antenna subarray.

21. The UE of claim 18 , wherein the indication of the traffic type is received from a base station, and wherein the indication includes a control message instructing the UE to switch from the first antenna subarray operation to the second antenna subarray operation.

22. The UE of claim 18 , wherein the indication of the traffic type is received from a processor of the UE, and wherein the UE transmits, to a base station, a request to switch from the first antenna subarray operation to the second antenna subarray operation.

23. The UE of claim 17 , wherein the request is transmitted using at least one of the first antenna subarray operation or the second antenna subarray operation.

24. The UE of claim 18 , wherein the traffic type is at least one of ultra-reliable low-latency communication (URLLC) traffic or enhanced mobile broadband (eMBB) traffic.

25. The UE of claim 18 , wherein the first set of antenna subarrays is configured with a first beamforming parameter for the first antenna subarray operation; and

wherein the one or more processors, when configuring the UE, are to configure a second beamforming parameter of the second set of antenna subarrays for the second antenna subarray operation.

26. The UE of claim 25 , wherein the second beamforming parameter causes a second beamwidth that is wider than a first beamwidth caused by the first beamforming parameter.

27. The UE of claim 18 , wherein the second set of antenna subarrays includes a greater quantity of antenna subarrays than the first set of antenna subarrays.

28. An apparatus for wireless communication, comprising:

means for receiving an indication of a traffic type, wherein the indication is received via a radiofrequency (RF) band;

means for configuring the apparatus to switch from a first antenna subarray operation that uses a first set of antenna subarrays to a second antenna subarray operation that uses a second set of antenna subarrays based at least in part on receiving the indication of the traffic type, wherein the second antenna subarray operation uses a same RF band, for a communication, that is used to receive the indication of the traffic type; and

means for transmitting the communication using the second antenna subarray operation.

29. A non-transitory computer-readable medium storing instructions for wireless communication, the instructions comprising:

one or more instructions that, when executed by one or more processors, cause the one or more processors to:

receive an indication of a traffic type, wherein the indication is received via a radiofrequency (RF) band;

configure a user equipment (UE) to switch from a first antenna subarray operation that uses a first set of antenna subarrays to a second antenna subarray operation that uses a second set of antenna subarrays based at least in part on receiving the indication of the traffic type, wherein the second antenna subarray operation uses a same RF band for, a communication, that is used to receive the indication of the traffic type; and

transmit the communication using the second antenna subarray operation.

30. The apparatus of claim 28 , wherein the second set of antenna subarrays includes a greater quantity of antenna subarrays than the first set of antenna subarrays.