Techniques for performing bandwidth part switching

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

communicating with a network device via a first instance of a periodic data burst, wherein the periodic data burst comprises one or more uplink or downlink transmissions scheduled on a first bandwidth part;

starting a bandwidth switching timer in connection with the first instance of the periodic data burst;

determining whether the bandwidth switching timer has expired based upon expiration of an inactivity timer triggered by one or more downlink control channel messages, wherein the inactivity timer is different from the bandwidth switching timer; and

operating, based at least in part on the determination, on one of the first bandwidth part or a second bandwidth part during at least a portion of a time period that extends from the expiration of the inactivity timer and a second instance of the periodic data burst.

2. The method of claim 1 , wherein determining whether the bandwidth switching timer has expired further comprises:

determining that the bandwidth switching timer has expired upon the expiration of the inactivity timer; and

remaining on the first bandwidth part from at least the expiration of the inactivity timer to an expiration of the second instance of the periodic data burst.

3. The method of claim 1 , wherein determining whether the bandwidth switching timer has expired further comprises:

determining that the bandwidth switching timer is running upon the expiration of the inactivity timer; and

operating on the second bandwidth part during at least the portion of the time period, wherein at least the portion of the time period comprises at least two bandwidth part switch delays based at least in part on operating on the second bandwidth part.

4. The method of claim 3 , further comprising:

operating in accordance with a first switch delay portion upon the expiration of the inactivity timer;

operating on the second bandwidth part upon completion of the first switch delay portion;

operating in accordance with a second switch delay portion based at least in part on receiving a downlink control message while operating in the second bandwidth part; and

operating on the first bandwidth part upon completion of the second switch delay portion, wherein a beginning of the second instance of the periodic data burst starts based at least in part on operating on the first bandwidth part.

5. The method of claim 1 , further comprising:

receiving an indication of a duration of the bandwidth switching timer, the indication included in a radio resource control message.

6. The method of claim 1 , further comprising:

receiving an indication of a duration associated with each burst of the periodic data burst and an offset from a beginning of the duration to the beginning of the first instance, the indication included in a radio resource control message.

7. The method of claim 6 , further comprising:

identifying that the beginning of the first instance has started based at least in part on the duration and the offset, wherein starting the bandwidth switching timer is based at least in part on identifying the beginning.

8. The method of claim 1 , further comprising:

receiving a message indicating a beginning of the first instance, wherein starting the bandwidth switching timer is based at least in part on the message.

9. The method of claim 8 , wherein receiving the message further comprises:

receiving a medium access control (MAC) message comprising an indication of the beginning of the first instance, wherein the indication is included in a MAC control element or downlink control information of the MAC message.

10. The method of claim 1 , further comprising:

receiving a message comprising an instance identifier, wherein the message is a packet data convergence protocol message; and

determining whether the instance identifier is different from a previously received instance identifier; and

determining whether to start the bandwidth switching timer based at least in part on whether the instance identifier is different from the previously received instance identifier.

11. The method of claim 10 , wherein determining whether the instance identifier is different further comprises:

determining that the instance identifier is different from the previously received instance identifier, wherein starting the bandwidth switching timer is based at least in part on the instance identifier being different from the previously received instance identifier.

12. The method of claim 1 , further comprising:

receiving a medium access control (MAC) message associated with the periodic data burst; and

identifying whether the bandwidth switching timer is running based at least in part on receiving the MAC message, wherein starting the bandwidth switching timer is based on identifying that the bandwidth switching timer was not already running.

13. The method of claim 1 , further comprising:

receiving an indication of a burst start timer to start at a beginning of the first instance of the periodic data burst.

14. The method of claim 13 , further comprising:

receiving a medium access control (MAC) message associated with the periodic data burst;

identifying whether the burst start timer is running based at least in part on receiving the MAC message; and

determining whether to start the burst start timer and the bandwidth switching timer based at least in part on whether the burst start timer is running.

15. The method of claim 14 , further comprising:

starting the burst start timer and the bandwidth switching timer based at least in part on identifying that the burst start timer is not running.

16. The method of claim 13 , further comprising:

receiving a message indicating a duration of the burst start timer, the duration included in a radio resource control message.

17. The method of claim 1 , further comprising:

identifying the expiration of the inactivity timer; and

stopping the bandwidth switching timer based at least in part on identifying the expiration of the inactivity timer.

18. The method of claim 1 , wherein the bandwidth switching timer is equal to a duration of the periodic data burst minus two times a bandwidth part switch delay.

19. A method for wireless communications at a network device, comprising:

communicating with a user equipment (UE) via a first instance of a periodic data burst, wherein the periodic data burst comprises one or more uplink or downlink transmissions scheduled on a first bandwidth part;

starting a bandwidth switching timer in connection with the first instance of the periodic data burst;

determining whether the bandwidth switching timer has expired based upon expiration of an inactivity timer triggered by one or more downlink control channel messages, wherein the inactivity timer is different from the bandwidth switching timer; and

identifying, based at least in part on whether the bandwidth switching timer has expired, whether the UE is operating on one of the first bandwidth part or a second bandwidth part during at least a portion of a time period that extends from the expiration of the inactivity timer and a second instance of the periodic data burst.

20. The method of claim 19 , wherein determining whether the bandwidth switching timer has expired further comprises:

determining that the bandwidth switching timer has expired upon the expiration of the inactivity timer; and

identifying that the UE is operating on the first bandwidth part from at least the expiration of the inactivity timer to an expiration of the second instance of the periodic data burst.

21. The method of claim 19 , wherein determining whether the bandwidth switching timer has expired further comprises:

determining that the bandwidth switching timer is running upon the expiration of the inactivity timer; and

identifying that the UE is operating on the second bandwidth part during at least the portion of the time period, wherein at least the portion of the time period comprises at least two bandwidth part switch delays based at least in part on operating on the second bandwidth part.

22. The method of claim 19 , further comprising:

identifying a duration of the bandwidth switching timer for the UE; and

transmitting, to the UE, an indication of the duration of the bandwidth switching timer, the indication included in a radio resource control message.

23. The method of claim 22 , wherein identifying the duration of the bandwidth switching timer is based at least in part on the periodic data burst being periodic, latency sensitive, or both.

24. The method of claim 19 , further comprising:

transmitting an indication of a duration associated with each burst of the periodic data burst and an offset from a beginning of the duration to the beginning of the first instance, the indication included in a radio resource control message.

25. The method of claim 24 , further comprising:

identifying that the beginning of the first instance has started based at least in part on the duration and the offset, wherein starting the bandwidth switching timer is based at least in part on identifying the beginning.

26. The method of claim 19 , further comprising:

transmitting a medium access control (MAC) message, wherein starting the bandwidth switching timer is based at least in part on a successful transmission of the MAC message.

27. The method of claim 26 , wherein the MAC message comprises an indication of a beginning of the first instance, the indication included in a MAC control element or downlink control information of the MAC message.

28. The method of claim 19 , further comprising:

identifying a beginning of the first instance; and

transmitting a message comprising an instance identifier, wherein the message is a packet data convergence protocol message, the instance identifier being different from a previously transmitted instance identifier, wherein starting the bandwidth switching timer is based at least in part on the instance identifier being different from the previously transmitted instance identifier.

29. An apparatus for wireless communications, comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

communicate with a network device via a first instance of a periodic data burst, wherein the periodic data burst comprises one or more uplink or downlink transmissions scheduled on a first bandwidth part;

start a bandwidth switching timer in connection with the first instance of the periodic data burst;

determine whether the bandwidth switching timer has expired based upon expiration of an inactivity timer triggered by one or more downlink control channel messages, wherein the inactivity timer is different from the bandwidth switching timer; and

operating, based at least in part on the determination, on one of the first bandwidth part or a second bandwidth part during at least a portion of a time period that extends from the expiration of the inactivity timer and a second instance of the periodic data burst.

30. An apparatus for wireless communications, comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

communicate with a user equipment (UE) via a first instance of a periodic data burst, wherein the periodic data burst comprises one or more uplink or downlink transmissions scheduled on a first bandwidth part;

start a bandwidth switching timer in connection with the first instance of the periodic data burst;

determine whether the bandwidth switching timer has expired based upon expiration of an inactivity timer triggered by one or more downlink control channel messages, wherein the inactivity timer is different from the bandwidth switching timer; and

identify, based at least in part on whether the bandwidth switching timer has expired, whether the UE is operating on one of the first bandwidth part or a second bandwidth part during at least a portion of a time period that extends from the expiration of the inactivity timer and a second instance of the periodic data burst.