Bandwidth part (BWP) hopping for interference mitigation

1. A method of wireless communication, comprising:

receiving, by a user equipment (UE) from a base station (BS), a bandwidth part (BWP) configuration indicating a first BWP hopping pattern and a first BWP hop duration in a plurality of frequency subbands within a radio frequency band;

monitoring, by the UE, for a first communication signal in a first frequency subband of the plurality of frequency subbands;

performing, by the UE, BWP hopping from the first frequency subband to a second frequency subband of the plurality of frequency subbands based on the first BWP hopping pattern;

monitoring, by the UE after performing the BWP hopping, for a second communication signal in the second frequency subband; and

receiving, by the UE from the BS, a BWP hopping freeze instruction to remain in the second frequency subband after the first BWP hop duration.

2. The method of claim 1 , further comprising:

performing, by the UE, a first listen-before-talk (LBT) in the first frequency subband; and

performing, by the UE, a second LBT in the second frequency subband.

3. The method of claim 1 , further comprising:

receiving, by the UE from the BS, a BWP hopping activation, wherein the performing the BWP hopping is further based on the BWP hopping activation.

4. The method of claim 3 , further comprising:

receiving, by the UE from the BS, a BWP hopping deactivation;

performing, by the UE in response to the BWP hopping deactivation, BWP hopping back to the first frequency subband; and

monitoring, by the UE, for a third communication signal in the first frequency subband after performing the BWP hopping back to the first frequency subband.

5. The method of claim 1 , wherein the BWP configuration further indicates a second BWP hopping pattern in the plurality of frequency subbands different from the first BWP hopping pattern.

6. The method of claim 5 , wherein the first BWP hopping pattern is associated with a first BWP that begins in the first frequency subband, and wherein the second BWP hopping pattern is associated with a second BWP that begins in a third frequency subband of the plurality of frequency subbands different from the first frequency subband.

7. The method of claim 5 , further comprising:

receiving, by the UE from the BS, a BWP hopping reconfiguration indicating to use the second BWP hopping pattern; and

performing, by the UE, BWP hopping based on the second BWP hopping pattern.

8. The method of claim 1 , wherein the BWP configuration further indicates, for the first BWP hopping pattern, a first BWP hop duration in the first frequency subband and a second BWP hop duration in the second frequency subband.

9. The method of claim 8 , further comprising:

receiving, by the UE from the BS based on the monitoring in the first frequency subband, the first communication signal indicating a channel occupancy time (COT) in the first frequency subband acquired by the BS, the COT including a period that is outside of the first BWP hop duration and at least partially within the second BWP hop duration,

wherein the performing the BWP hopping includes:

delaying, by the UE, the BWP hopping from the first frequency subband to the second frequency subband based on an end time of the COT.

10. The method of claim 8 , further comprising:

refraining, by the UE, from performing BWP hopping after the first BWP hop duration based on the BWP hopping freeze instruction.

11. The method of claim 10 , further comprising:

receiving, by the UE from the BS, a BWP hopping resume instruction,

wherein the performing the BWP hopping from the first frequency subband to the second frequency subband is further based on the BWP hopping resume instruction.

12. The method of claim 8 , further comprising:

receiving, by the UE from the BS, an instruction to hop from a third frequency subband of the plurality of frequency subbands to the first frequency subband before a start of the first BWP hop duration based on a channel detection in the third frequency subband.

13. The method of claim 1 , wherein the first BWP hopping pattern is based on at least one of a predetermined sequence, a transmission slot index, an identifier of the UE, a cell identifier, a starting BWP index, or a BWP hop dwell duration.

14. The method of claim 1 , further comprising:

receiving, by the UE from the BS in the first frequency subband, the first communication signal including data based on the monitoring in the first frequency subband; and

transmitting, by the UE to the BS in the second frequency subband, an acknowledgement/negative-acknowledgement (ACK/NACK) for the data after performing the BWP hopping.

15. A user equipment (UE), comprising:

a transceiver configured to:

receive, from a base station (BS), a bandwidth part (BWP) configuration indicating a first BWP hopping pattern and a first BWP hop duration in a plurality of frequency subbands within a radio frequency band; and

a processor configured to:

monitor for a first communication signal in a first frequency subband of the plurality of frequency subbands;

perform BWP hopping from the first frequency subband to a second frequency subband of the plurality of frequency subbands based on the first BWP hopping pattern;

monitor, after performing the BWP hopping, for a second communication signal in the second frequency subband; and

receive, by the UE from the BS, a BWP hopping freeze instruction to remain in the second frequency subband after the first BWP hop duration.

16. The UE of claim 15 , wherein the processor is further configured to:

perform a first listen-before-talk (LBT) in the first frequency subband; and

perform a second LBT in the second frequency subband.

17. The UE of claim 15 , wherein:

the transceiver is further configured to:

receive, from the BS, a BWP hopping activation; and

receive, from the BS after the BWP hopping activation, a BWP hopping deactivation;

the processor configured to perform the BWP hopping is further configured to:

perform the BWP hopping from the first frequency subband to the second frequency subband further based on the BWP hopping activation; and

the processor is further configured to:

perform, in response to the BWP hopping deactivation, BWP hopping back to the first frequency subband; and

monitor for a third communication signal in the first frequency subband after performing the BWP hopping back to the first frequency subband.

18. The UE of claim 15 , wherein:

the first BWP hopping pattern is associated with a first BWP that begins in the first frequency subband;

the configuration further indicates a second BWP hopping pattern in the plurality of frequency subbands, the second BWP hopping pattern associated with a second BWP that begins in a third frequency subband of the plurality of frequency subbands different from the first frequency subband;

the transceiver is further configured to:

receive, from the BS, a BWP hopping reconfiguration indicating to use the second BWP hopping pattern; and

the processor is further configured to:

perform BWP hopping based on the second BWP hopping pattern.

19. The UE of claim 15 , wherein:

the configuration further indicates, for the first BWP hopping pattern, a first BWP hop duration in the first frequency subband and a second BWP hop duration in the second frequency subband;

the transceiver is further configured to:

receive, from the BS based on the monitoring in the first frequency subband, the first communication signal indicating a channel occupancy time (COT) in the first frequency subband acquired by the BS, the COT including a period that is outside of the first BWP hop duration and at least partially within the second BWP hop duration; and

the processor configured to perform the BWP hopping is further configured to:

delay the BWP hopping from the first frequency subband to the second frequency subband based on an end time of the COT.

20. The UE of claim 15 , wherein:

the configuration further indicates, for the first BWP hopping pattern, a first BWP hop duration in the first frequency subband and a second BWP hop duration in the second frequency subband;

the transceiver is further configured to:

receive, from the BS, the BWP hopping freeze instruction to remain in the first frequency subband after the first BWP hop duration; and

receive, from the BS after the BWP hopping freeze instruction, a BWP hopping resume instruction;

the processor is further configured to:

refrain from performing BWP hopping after the first BWP hop duration based on the BWP hopping freeze instruction; and

the processor configured to perform the BWP hopping is further configured to:

perform the BWP hopping from the first frequency subband to the second frequency subband further based on the BWP hopping resume instruction.

21. The UE of claim 15 , wherein:

the configuration further indicates, for the first BWP hopping pattern, a first BWP hop duration in the first frequency subband and a second BWP hop duration in the second frequency subband; and

the transceiver is further configured to:

receive, from the BS, an instruction to hop from a third frequency subband of the plurality of frequency subbands to the first frequency subband before a start of the first BWP hop duration based on a channel detection in the third frequency subband.

22. The UE of claim 15 , wherein the first BWP hopping pattern is based on at least one of a predetermined sequence, a transmission slot index, an identifier of the UE, a cell identifier, a starting BWP index, or a BWP hop dwell duration.

23. The UE of claim 15 , wherein the transceiver is further configured to:

receive, from the BS in the first frequency subband, the first communication signal including data based on the monitoring in the first frequency subband; and

transmit, to the BS in the second frequency subband, an acknowledgement/negative-acknowledgement (ACK/NACK) for the data after performing the BWP hopping.

24. The UE of claim 15 , further comprising:

a frontend,

wherein the processor configured to perform the BWP hopping is further configured to:

configure the frontend to switch from the first frequency subband to the second frequency subband.

25. A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:

code for causing a user equipment (UE) to receive, from a base station (BS), a bandwidth part (BWP) configuration indicating a first BWP hopping pattern and a first BWP hop duration in a plurality of frequency subbands within a radio frequency band;

code for causing the UE to monitor for a first communication signal in a first frequency subband of the plurality of frequency subbands;

code for causing the UE to perform BWP hopping from the first frequency subband to a second frequency subband of the plurality of frequency subbands based on the first BWP hopping pattern;

code for causing the UE to monitor, after performing the BWP hopping, for a second communication signal in the second frequency subband; and

code for causing the UE to receive, by the UE from the BS, a BWP hopping freeze instruction to remain in the second frequency subband after the first BWP hop duration.

26. The non-transitory computer-readable medium of claim 25 , further comprising:

code for causing the UE to receive, from the BS, a BWP hopping activation, wherein the code for causing the UE to perform the BWP hopping is further configured to perform the BWP hopping from the first frequency subband to the second frequency subband based on the BWP hopping activation;

code for causing the UE to receive, from the BS, a BWP hopping deactivation;

code for causing the UE to perform, in response to the BWP hopping deactivation, BWP hopping back to the first frequency subband; and

code for causing the UE to monitor for a third communication signal in the first frequency subband after performing the BWP hopping back to the first frequency subband.

27. The non-transitory computer-readable medium of claim 25 , wherein:

the first BWP hopping pattern is associated with a first BWP that begins in the first frequency subband;

the BWP configuration further indicates a second BWP hopping pattern in the plurality of frequency subbands, the second BWP hopping pattern associated with a second BWP that begins in a third frequency subband of the plurality of frequency subbands different from the first frequency subband; and

the non-transitory computer-readable medium further comprises:

code for causing the UE to receive, from the BS, a BWP hopping reconfiguration indicating to use the second BWP hopping pattern; and

code for causing the UE to perform BWP hopping based on the second BWP hopping pattern.

28. The non-transitory computer-readable medium of claim 25 , wherein:

the BWP configuration further indicates, for the first BWP hopping pattern, a first BWP hop duration in the first frequency subband and a second BWP hop duration in the second frequency subband;

the non-transitory computer-readable medium further comprises:

code for causing the UE to receive, from the BS, the BWP hopping freeze instruction to remain in the first frequency subband after the first BWP hop duration; and

code for causing the UE to refrain from performing BWP hopping after the first BWP hop duration based on the BWP hopping freeze instruction;

code for causing the UE to receive, from the BS, a BWP hopping resume instruction; and

the code for causing the UE to perform the BWP hopping is further configured to:

perform the BWP hopping from the first frequency subband to the second frequency subband further based on the BWP hopping resume instruction.

29. The non-transitory computer-readable medium of claim 25 ,

the BWP configuration further indicates, for the first BWP hopping pattern, a first BWP hop duration in the first frequency subband and a second BWP hop duration in the second frequency subband; and

the non-transitory computer-readable medium further comprises:

code for causing the UE to receive, from the BS, an instruction to hop from a third frequency subband of the plurality of frequency subbands to the first frequency subband before a start of the first BWP hop duration based on a channel detection in the third frequency subband.

30. The non-transitory computer-readable medium of claim 25 , wherein the first BWP hopping pattern is based on at least one of a predetermined sequence, a transmission slot index, an identifier of the UE, a cell identifier, a starting BWP index, or a BWP hop dwell duration.