Demodulation reference signal bundling in full-duplex operation

1. A method for wireless communication at a user equipment (UE), comprising:

transmitting an indication of a capability associated with maintaining phase continuity and power consistency for demodulation reference signal bundling between a full-duplex slot and a half-duplex slot;

transmitting a first signal during a first slot of a first time domain window associated with the demodulation reference signal bundling;

determining whether to terminate the first time domain window associated with the demodulation reference signal bundling based at least in part on the capability associated with maintaining the phase continuity and the power consistency between the full-duplex slot and the half-duplex slot; and

transmitting a second signal during a second slot of the first time domain window or a second time domain window associated with the demodulation reference signal bundling based at least in part on the determination of whether to terminate the first time domain window.

2. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

terminating the first time domain window based at least in part on the phase continuity and the power consistency not being maintained between the full-duplex slot and the half-duplex slot; and

transmitting the second signal during the second slot of the second time domain window associated with the demodulation reference signal bundling based at least in part on terminating the first time domain window.

3. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

terminating the first time domain window based at least in part on the phase continuity and the power consistency not being maintained between the full-duplex slot and the half-duplex slot, wherein the first slot comprises the half-duplex slot and the second slot comprises the full-duplex slot; and

transmitting the second signal during the second slot of the second time domain window associated with the demodulation reference signal bundling based at least in part on terminating the first time domain window.

4. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

transmitting the second signal during the second slot of the first time domain window for the demodulation reference signal bundling based at least in part on the phase continuity and the power consistency being maintained between the full-duplex slot and the half-duplex slot, wherein the first slot comprises the full-duplex slot and the second slot comprises the half-duplex slot.

5. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

transmitting the second signal during the second slot of the first time domain window for the demodulation reference signal bundling based at least in part on the phase continuity and the power consistency being maintained between the full-duplex slot and the half-duplex slot.

6. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

terminating the first time domain window based at least in part on allocated frequency domain resources of the full-duplex slot being near an edge of a bandwidth part, wherein the phase continuity and the power consistency are not maintained based at least in part on the allocated frequency domain resources being located at a position of the bandwidth part that is closer to a frequency edge of the bandwidth part than other bandwidths of the bandwidth part; and

transmitting the second signal during the second slot of the second time domain window for the demodulation reference signal bundling based at least in part on terminating the first time domain window.

7. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

terminating the first time domain window based at least in part on allocated frequency domain resources of the first slot or the second slot being near an edge of a bandwidth part, wherein the phase continuity and the power consistency are not maintained based at least in part on the allocated frequency domain resources being located at a position of the bandwidth part that is closer to a frequency edge of the bandwidth part than other bandwidths of the bandwidth part; and

transmitting the second signal during the second slot of the second time domain window for the demodulation reference signal bundling based at least in part on terminating the first time domain window.

8. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

terminating the first time domain window based at least in part on the full-duplex slot corresponding to a first frequency hop and the half-duplex slot corresponding to a second frequency hop, wherein the phase continuity and the power consistency are not maintained between the first frequency hop and the second frequency hop; and

transmitting the second signal during the second slot of the second time domain window for the demodulation reference signal bundling based at least in part on terminating the first time domain window.

9. The method of claim 1 , wherein transmitting the second signal during the second slot comprises:

transmitting the second signal during the second slot of the first time domain window for the demodulation reference signal bundling based at least in part on a time gap between the first slot and the second slot satisfying a threshold, wherein the phase continuity and the power consistency are maintained across the time gap.

10. The method of claim 1 , wherein transmitting the indication of the capability comprises:

indicating a capability to support maintaining the phase continuity and the power consistency for the demodulation reference signal bundling from the full-duplex slot to the half-duplex slot or from the half-duplex slot to the full-duplex slot, or both.

11. The method of claim 1 , wherein transmitting the indication of the capability comprises:

transmitting the indication of the capability when connecting to a network entity.

12. The method of claim 1 , wherein the full-duplex slot is a sub-band full-duplex slot including one or more sub-bands of a component carrier bandwidth for uplink communication and one or more sub-bands of the component carrier bandwidth for downlink communications in a same slot.

13. The method of claim 1 , wherein a component carrier bandwidth during the half-duplex slot includes uplink communications.

14. The method of claim 1 , wherein the first time domain window is a first actual time domain window, the second time domain window is a second actual time domain window, wherein any plurality of transmissions within an actual time domain window maintain phase continuity and power consistency across the plurality of transmissions.

15. The method of claim 1 , wherein a first set of one or more demodulation reference signals in the first signal and a second set of one or more demodulation reference signals in the second signal are a same demodulation reference signal for channel estimation based at least in part on the demodulation reference signal bundling.

16. A method for wireless communication at a network entity, comprising:

receiving an indication of a user equipment (UE) capability associated with maintaining phase continuity and power consistency for demodulation reference signal bundling between a full-duplex slot and a half-duplex slot;

receiving a first signal with a first set of demodulation reference signals during a first slot of a first time domain window associated with the demodulation reference signal bundling;

receiving, based at least in part on receiving the first signal during the first slot, a second signal with a second set of demodulation reference signals during a second slot of the first time domain window or of a second time domain window associated with the demodulation reference signal bundling based at least in part on whether the phase continuity and the power consistency are maintained between the full-duplex slot and the half-duplex slot; and

decoding the first signal and the second signal based at least in part on the first set of demodulation reference signals and the second set of demodulation reference signals in accordance with the demodulation reference signal bundling.

17. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the second time domain window associated with the demodulation reference signal bundling based at least in part on the phase continuity and the power consistency not being maintained between the full-duplex slot and the half-duplex slot.

18. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the second time domain window associated with the demodulation reference signal bundling based at least in part on the phase continuity and the power consistency not being maintained between the full-duplex slot and the half-duplex slot, wherein the first slot comprises the half-duplex slot and the second slot comprises the full-duplex slot.

19. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the first time domain window for the demodulation reference signal bundling based at least in part on the phase continuity and the power consistency being maintained between the full-duplex slot and the half-duplex slot, wherein the first slot comprises the full-duplex slot and the second slot comprises the half-duplex slot.

20. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the first time domain window for the demodulation reference signal bundling based at least in part on the phase continuity and the power consistency being maintained between the full-duplex slot and the half-duplex slot.

21. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the second time domain window for the demodulation reference signal bundling based at least in part on allocated frequency domain resources of the full-duplex slot being near an edge of a bandwidth part, wherein the phase continuity and the power consistency are not maintained based at least in part on the allocated frequency domain resources being located at a position of the bandwidth part that is closer to a frequency edge of the bandwidth part than other bandwidths of the bandwidth part.

22. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the second time domain window for the demodulation reference signal bundling based at least in part on allocated frequency domain resources of the first slot or the second slot being near an edge of a bandwidth part, wherein the phase continuity and the power consistency are not maintained based at least in part on the allocated frequency domain resources being located at a position of the bandwidth part that is closer to a frequency edge of the bandwidth part than other bandwidths of the bandwidth part.

23. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the second time domain window for the demodulation reference signal bundling based at least in part on the full-duplex slot corresponding to a first frequency hop and the half-duplex slot corresponding to a second frequency hop, wherein the phase continuity and the power consistency are not maintained between the first frequency hop and the second frequency hop.

24. The method of claim 16 , wherein receiving the second signal during the second slot comprises:

receiving the second signal during the second slot of the first time domain window for the demodulation reference signal bundling based at least in part on a time gap between the first slot and the second slot satisfying a threshold, wherein the phase continuity and the power consistency are maintained across the time gap.

25. The method of claim 16 , wherein receiving the indication of the UE capability comprises:

receiving an indication of a capability of a UE to support maintaining the phase continuity and the power consistency for the demodulation reference signal bundling from the full-duplex slot to the half-duplex slot or from the half-duplex slot to the full-duplex slot, or both.

26. The method of claim 16 , wherein receiving the indication of the UE capability comprises:

receiving the indication of the UE capability when a UE connects to the network entity.

27. The method of claim 16 , wherein the full-duplex slot is a sub-band full-duplex slot including one or more sub-bands of a component carrier bandwidth for uplink communication and one or more sub-bands of the component carrier bandwidth for downlink communications in a same slot.

28. The method of claim 16 , wherein the first time domain window is a first actual time domain window, the second time domain window is a second actual time domain window, wherein any plurality of transmissions within an actual time domain window maintain phase continuity and power consistency across the plurality of transmissions.

29. An apparatus for wireless communication at a user equipment (UE), comprising:

a processor; and

a memory coupled with the processor, wherein the memory comprises instructions executable by the processor to cause the apparatus to:

transmit an indication of a capability associated with maintaining phase continuity and power consistency for demodulation reference signal bundling between a full-duplex slot and a half-duplex slot;

transmit a first signal during a first slot of a first time domain window associated with the demodulation reference signal bundling;

determine whether to terminate the first time domain window associated with the demodulation reference signal bundling based at least in part on the capability associated with maintaining the phase continuity and the power consistency between the full-duplex slot and the half-duplex slot; and

transmit a second signal during a second slot of the first time domain window or a second time domain window associated with the demodulation reference signal bundling based at least in part on the determination of whether to terminate the first time domain window.

30. An apparatus for wireless communication at a network entity, comprising:

a processor; and

a memory coupled with the processor, wherein the memory comprises instructions executable by the processor to cause the apparatus to:

receive an indication of a user equipment (UE) capability associated with maintaining phase continuity and power consistency for demodulation reference signal bundling between a full-duplex slot and a half-duplex slot;

receive a first signal with a first set of demodulation reference signals during a first slot of a first time domain window associated with the demodulation reference signal bundling;

receive, based at least in part on receiving the first signal during the first slot, a second signal with a second set of demodulation reference signals during a second slot of the first time domain window or of a second time domain window associated with the demodulation reference signal bundling based at least in part on whether the phase continuity and the power consistency are maintained between the full-duplex slot and the half-duplex slot; and

decode the first signal and the second signal based at least in part on the first set of demodulation reference signals and the second set of demodulation reference signals in accordance with the demodulation reference signal bundling.