Techniques to facilitate power saving while monitoring paging and wakeup signals

1. 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 an indication of an active bandwidth part (BWP) associated with an ON duration of a discontinuous reception (DRX) cycle;

monitor a first bandwidth for a wakeup signal (WUS) at a WUS occasion of the DRX cycle, the first bandwidth corresponding to a subset of the active BWP;

transition to an awake state for the ON duration when the WUS is received at the WUS occasion;

receive a paging configuration including at least a paging cycle, the paging cycle including one or more paging occasions;

determine a second bandwidth having:

a larger bandwidth between the first bandwidth and a paging bandwidth when the first bandwidth and the paging bandwidth at least partially overlap in at least one of a time-domain and a frequency-domain, or

a combined bandwidth including the first bandwidth and the paging bandwidth when the first bandwidth and the paging bandwidth are non-overlapping in the time-domain and non-overlapping in the frequency-domain; and

monitor the second bandwidth for a second WUS and a paging message at a paging occasion selected from the one or more paging occasions based on the paging cycle and the DRX cycle.

2. The apparatus of claim 1 , wherein the at least one processor is further configured to:

receive a WUS control resource set (CORESET) defining the first bandwidth.

3. The apparatus of claim 2 , wherein the at least one processor is further configured to:

receive the WUS CORESET via physical downlink control channel configuration information.

4. The apparatus of claim 2 , wherein the at least one processor is further configured to:

receive the WUS CORESET while performing a connection establishment procedure or via a radio resource control (RRC) reconfiguration message.

5. The apparatus of claim 1 , wherein the paging occasion is located near a second WUS occasion of the DRX cycle in the time-domain.

6. The apparatus of claim 1 , wherein the paging occasion is located at an end of the paging cycle in the time-domain.

7. The apparatus of claim 1 , wherein the at least one processor is further configured to:

receive a paging control resource set (CORESET) defining the paging bandwidth corresponding to a second subset of the active BWP.

8. The apparatus of claim 7 , wherein the at least one processor is further configured to:

determine the larger bandwidth between the first bandwidth and the paging bandwidth when the first bandwidth and the paging bandwidth at least partially overlap in the at least one of the time-domain and the frequency-domain,

wherein the second bandwidth corresponds to the larger bandwidth.

9. The apparatus of claim 7 , wherein the at least one processor is further configured to:

determine the combined bandwidth including the first bandwidth and the paging bandwidth when the first bandwidth and the paging bandwidth are non-overlapping in the time-domain and non-overlapping in the frequency-domain,

wherein the second bandwidth corresponds to the combined bandwidth.

10. The apparatus of claim 7 , wherein the at least one processor is further configured to:

receive the paging CORESET via physical downlink control channel configuration information.

11. The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor.

12. A method of wireless communication at a user equipment (UE), comprising:

receiving an indication of an active bandwidth part (BWP) associated with an ON duration of a discontinuous reception (DRX) cycle;

monitoring a first bandwidth for a wakeup signal (WUS) at a WUS occasion of the DRX cycle, the first bandwidth corresponding to a subset of the active BWP;

transitioning to an awake state for the ON duration when the WUS is received at the WUS occasion;

receiving a paging configuration including at least a paging cycle, the paging cycle including one or more paging occasions;

determining a second bandwidth having:

a larger bandwidth between the first bandwidth and a paging bandwidth when the first bandwidth and the paging bandwidth at least partially overlap in at least one of a time-domain and a frequency-domain, or

a combined bandwidth including the first bandwidth and the paging bandwidth when the first bandwidth and the paging bandwidth are non-overlapping in the time-domain and non-overlapping in the frequency-domain; and

monitoring the second bandwidth for a second WUS and a paging message at a paging occasion selected from the one or more paging occasions based on the paging cycle and the DRX cycle.

13. The method of claim 12 , further comprising:

receiving a WUS control resource set (CORESET) defining the first bandwidth.

14. The method of claim 12 , wherein the paging occasion is located near a second WUS occasion of the DRX cycle in the time-domain.

15. The method of claim 12 , further comprising:

receiving a paging control resource set (CORESET) defining the paging bandwidth corresponding to a second subset of the active BWP.

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

a memory; and

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

transmit, to a user equipment (UE), an indication of an active bandwidth part (BWP) associated with an ON duration of a discontinuous reception (DRX) cycle of the UE;

transmit a wakeup signal (WUS) to the UE on a first bandwidth at a WUS occasion of the DRX cycle, the first bandwidth corresponding to a subset of the active BWP;

transmit a paging configuration including at least a paging cycle, the paging cycle including one or more paging occasions;

transmit a paging message at each of the one or more paging occasions including at least a first paging occasion; and

transmit a second WUS at a second WUS occasion of the DRX cycle based on a larger bandwidth of the first bandwidth and the paging bandwidth, wherein the first bandwidth and a paging bandwidth at least partially overlap in at least one of a time-domain and a frequency-domain, or

transmit the second WUS at the second WUS occasion of the DRX cycle based on a combined bandwidth of the first bandwidth and the paging bandwidth, wherein the first bandwidth and the paging bandwidth are non-overlapping in the time-domain and non-overlapping in the frequency-domain.

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

transmit a WUS control resource set (CORESET) defining the first bandwidth.

18. The apparatus of claim 17 , wherein the at least one processor is further configured to:

transmit the WUS CORESET via physical downlink control channel configuration information.

19. The apparatus of claim 17 , wherein the at least one processor is further configured to:

transmit the WUS CORESET while performing a connection establishment procedure or via a radio resource control (RRC) reconfiguration message.

20. The apparatus of claim 16 , wherein the first paging occasion is located near the second WUS occasion of the DRX cycle in the time-domain.

21. The apparatus of claim 16 , wherein the first paging occasion is located at an end of the paging cycle in the time-domain.

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

transmit a paging control resource set (CORESET) defining the paging bandwidth corresponding to a second subset of the active BWP.

23. The apparatus of claim 16 , wherein the first bandwidth and the paging bandwidth at least partially overlap in at least one of the time-domain and the frequency-domain.

24. The apparatus of claim 16 , wherein the first bandwidth and the paging bandwidth are non-overlapping in the time-domain and non-overlapping in the frequency-domain.

25. The apparatus of claim 22 , wherein the at least one processor is further configured to:

transmit the paging CORESET via physical downlink control channel configuration information.

26. The apparatus of claim 16 , further comprising a transceiver coupled to the at least one processor.

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

transmitting, to a user equipment (UE), an indication of an active bandwidth part (BWP) associated with an ON duration of a discontinuous reception (DRX) cycle of the UE;

transmitting a wakeup signal (WUS) to the UE on a first bandwidth at a WUS occasion of the DRX cycle, the first bandwidth corresponding to a subset of the active BWP;

transmitting a paging configuration including at least a paging cycle, the paging cycle including one or more paging occasions;

transmitting a paging message at each of the one or more paging occasions including at least a first paging occasion; and

transmitting a second WUS at a second WUS occasion of the DRX cycle based on a larger bandwidth of the first bandwidth and the paging bandwidth, wherein the first bandwidth and a paging bandwidth at least partially overlap in at least one of a time-domain and a frequency-domain, or

transmitting the second WUS at the second WUS occasion of the DRX cycle based on a combined bandwidth of the first bandwidth and the paging bandwidth wherein the first bandwidth and the paging bandwidth are non-overlapping in the time-domain and non-overlapping in the frequency-domain.

28. The method of claim 27 , further comprising:

transmitting a WUS control resource set (CORESET) defining the first bandwidth.

29. The method of claim 27 , wherein the first paging occasion is located near the second WUS occasion of the DRX cycle in the time-domain.

30. The method of claim 27 , further comprising:

transmitting a paging control resource set (CORESET) defining the paging bandwidth corresponding to a second subset of the active BWP.