Beam failure detection and indication in DRX mode

1. A method of wireless communication at a User Equipment (UE), comprising:

receiving a discontinuous reception (DRX) configuration having a DRX period comprising a DRX on duration and a DRX off duration;

determining a beam failure measurement period based on a periodicity for Reference Signals (RSs) configured for beam failure detection and the DRX period; and

performing a radio link quality measurement of at least one of the RSs based on the beam failure measurement period determined by the UE.

2. The method of claim 1 , wherein determining the beam failure measurement period comprises determining a maximum between the periodicity for the RSs and the DRX period.

3. The method of claim 1 , wherein the UE performs the radio link quality measurement once during the beam failure measurement period.

4. The method of claim 1 , wherein the UE applies at least one of a failure detection counter or a failure detection timer for the DRX mode to perform the radio link quality measurement when the UE is in the DRX mode.

5. The method of claim 4 , wherein the measurement is performed during the DRX on duration of the DRX period.

6. The method of claim 1 , wherein a length of the DRX period is configured based on a delay sensitivity of the UE.

7. The method of claim 1 , further comprising:

waking up prior to the DRX on duration of a DRX cycle to perform the radio link quality measurement.

8. The method of claim 7 , further comprising:

detecting a beam failure; and

initiating a beam failure recovery procedure prior to the on duration of the DRX cycle.

9. An apparatus for wireless communication at a User Equipment (UE), comprising:

a memory; and

at least one processor coupled to the memory and configured to:

receive a discontinuous reception (DRX) configuration having a DRX period comprising a DRX on duration and a DRX off duration;

determine a beam failure measurement period based on a periodicity for Reference Signals (RSs) configured for beam failure detection and the DRX period; and

perform a radio link quality measurement of at least one of the RSs based on the beam failure measurement period determined by the UE.

10. The apparatus of claim 9 , wherein determining the beam failure measurement period comprises determining a maximum between the periodicity for the RSs and the DRX period.

11. The apparatus of claim 9 , wherein the UE performs the radio link quality measurement only once during the beam failure measurement period.

12. The apparatus of claim 9 , wherein the UE applies at least one of a failure detection counter or a failure detection timer for the DRX mode to perform the radio link quality measurement when the UE is in the DRX mode.

13. The apparatus of claim 12 , wherein the measurement is performed during the DRX on duration of the DRX period.

14. The apparatus of claim 9 , wherein a length of the DRX period is configured based on a delay sensitivity of the UE.

15. The apparatus of claim 9 , wherein the at least one processor is further configured to:

wake up prior to the DRX on duration of a DRX cycle to perform the radio link quality measurement.

16. The apparatus of claim 15 , wherein the at least one processor is further configured to:

detect a beam failure; and

initiate a beam failure recovery procedure prior to the on duration of the DRX cycle.

17. A method of wireless communication at a base station, comprising:

determining a length of a discontinuous reception (DRX) period for a User Equipment (UE) based on a delay sensitivity of the UE to latency in beam failure detection;

configuring the UE with a DRX configuration having the DRX period comprising a DRX on duration and a DRX off duration; and

transmitting periodic Reference Signals (RSs) configured for beam failure detection.

18. The method of claim 17 , wherein the base station determines a shorter length of the DRX period when the UE is more sensitive to latency in beam failure detection.

19. The method of claim 17 , wherein the base station determines a longer length of the DRX period when the UE is less sensitive to latency in beam failure detection.

20. The method of claim 17 , wherein the base station applies a different set of parameters for a beam failure detection procedure when the UE is in a DRX mode.

21. The method of claim 20 , wherein the different set of parameters comprises at least one of a failure detection counter for the DRX mode and a failure detection timer for the DRX mode.

22. The method of claim 17 , further comprising:

determining the delay sensitivity of the UE to latency in beam failure detection.

23. The method of claim 22 , wherein the delay sensitivity is determined based on at least one of a reliability or an outage requirement of an application at the UE.

24. An apparatus for wireless communication at a base station, comprising:

a memory; and

at least one processor coupled to the memory and configured to:

determine a length of a discontinuous reception (DRX) period for a User Equipment (UE) based on a delay sensitivity of the UE to latency in beam failure detection;

configure the UE with a DRX configuration having the DRX period comprising a DRX on duration and a DRX off duration; and

transmit periodic Reference Signals (RSs) configured for beam failure detection.

25. The apparatus of claim 24 , wherein the base station determines a shorter length of the DRX period when the UE is more sensitive to latency in beam failure detection.

26. The apparatus of claim 24 , wherein the base station determines a longer length of the DRX period when the UE is less sensitive to latency in beam failure detection.

27. The apparatus of claim 24 , wherein the base station applies a different set of parameters for a beam failure detection procedure when the UE is in a DRX mode.

28. The apparatus of claim 27 , wherein the different set of parameters comprises at least one of a failure detection counter for the DRX mode and a failure detection timer for the DRX mode.

29. The apparatus of claim 24 , the at least one processor further configured to:

determine the delay sensitivity of the UE to latency in beam failure detection.

30. The apparatus of claim 29 , wherein the delay sensitivity is determined based on at least one of a reliability or an outage requirement of an application at the UE.