Configuration aspects of a tracking reference signal in new radio

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

receiving configuration information indicating a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

detecting a first TRS burst having the first burst duration and a second TRS burst having the second burst duration based at least in part on the configuration information; and

performing resource tracking based at least in part on the detected first TRS burst and the second TRS burst.

2. The method of claim 1 , further comprising:

determining, from the configuration information, that the first burst duration corresponds to a first time interval and the second burst duration corresponds to a second time interval, the second time interval occurring after the first time interval.

3. The method of claim 1 , further comprising:

determining, from the configuration information, that transmissions of TRS bursts are scheduled to alternate between the first burst duration and the second burst duration in each time interval of a plurality of time intervals.

4. The method of claim 1 , further comprising:

determining, from the configuration information, that a first resource and a second resource have been allocated to the UE, wherein the first burst duration corresponds to the first resource and the second burst duration corresponds to the second resource.

5. The method of claim 1 , further comprising:

determining, from the configuration information, at least one TRS parameter, wherein the at least one TRS parameter is one or more of a TRS burst duration parameter, a TRS burst periodicity parameter, an aspect of a TRS tone, a TRS symbol spacing parameter, a TRS number parameter, an offset parameter, and a TRS bandwidth parameter.

6. The method of claim 1 , further comprising:

determining, from the configuration information, a plurality of burst durations and a corresponding time interval duration for each of the plurality of burst durations, the plurality of burst durations including the first and second burst durations; and

monitoring for a plurality of TRS bursts based at least in part on the plurality of burst durations and the corresponding time interval durations, the plurality of TRS bursts including the first and second TRS bursts.

7. The method of claim 1 , further comprising:

determining, from the configuration information, a frequency offset parameter; and

monitoring for the first TRS burst based at least in part on the frequency offset parameter.

8. The method of claim 4 , further comprising determining, from the configuration information, a periodicity of a time interval and a time offset, wherein detecting the first TRS burst having the first burst duration and the second TRS burst having the second burst duration comprises:

monitoring, within each instance of the time interval, for a TRS burst having the first burst duration at a first location and for a TRS burst having the second burst duration at a second location corresponding to the offset.

9. The method of claim 4 , further comprising:

determining that the first resource is scheduled to collide with the second resource during a transmission time interval (TTI).

10. The method of claim 7 , further comprising:

determining, from the configuration information, tone spacing, wherein monitoring for the first TRS burst is based at least in part on the tone spacing.

11. The method of claim 9 , further comprising:

determining, based at least in part on the configuration information or a rule, a priority order of the first resource relative to the second resource; and

monitoring for one of the first TRS burst or the second TRS burst within the TTI based at least in part on the priority order.

12. A method for wireless communication by a base station, comprising:

selecting a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

transmitting configuration information indicating the first burst duration and the second burst duration; and

transmitting a first TRS burst having the first burst duration and a second TRS burst having the second burst duration.

13. The method of claim 12 , wherein transmitting the first TRS burst and the second TRS burst comprises:

alternating between transmitting the first TRS burst and the second TRS burst in each time interval of a plurality of time intervals.

14. The method of claim 12 , further comprising:

allocating a first resource and a second resource to a user equipment (UE), wherein the configuration information indicates that each of the first resource and the second resource have been allocated to the UE.

15. The method of claim 14 , further comprising:

determining a time offset between the first resource and the second resource, wherein the configuration information indicates the time offset.

16. The method of claim 14 , further comprising:

determining a priority order of the first resource relative to the second resource, wherein the configuration information indicates the priority order.

17. The method of claim 14 , further comprising:

determining a plurality of burst durations and a corresponding time interval duration for each of the plurality of burst durations, the plurality of burst durations including the first and second burst durations, wherein the configuration information indicates the plurality of burst durations and the corresponding time interval durations.

18. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

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

receive configuration information indicating a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

detect a first TRS burst having the first burst duration and a second TRS burst having the second burst duration based at least in part on the configuration information; and

perform resource tracking based at least in part on the detected first TRS burst and the second TRS burst.

19. The apparatus of claim 18 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, from the configuration information, that the first burst duration corresponds to a first time interval and the second burst duration corresponds to a second time interval, the second time interval occurring after the first time interval.

20. The apparatus of claim 18 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, from the configuration information, that transmissions of TRS bursts are scheduled to alternate between the first burst duration and the second burst duration in each time interval of a plurality of time intervals.

21. The apparatus of claim 18 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, from the configuration information, that a first resource and a second resource have been allocated to a user equipment (UE), wherein the first burst duration corresponds to the first resource and the second burst duration corresponds to the second resource.

22. The apparatus of claim 21 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, from the configuration information, a periodicity of a time interval and a time offset, wherein the instructions for detecting the first TRS burst having the first burst duration and the second TRS burst having the second burst duration are executable by the processor to cause the apparatus to:

monitor, within each instance of the time interval, for a TRS burst having the first burst duration at a first location and for a TRS burst having the second burst duration at a second location corresponding to the offset.

23. The apparatus of claim 21 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the first resource is scheduled to collide with the second resource during a transmission time interval (TTI).

24. The apparatus of claim 23 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, based at least in part on the configuration information or a rule, a priority order of the first resource relative to the second resource; and

monitor for one of the first TRS burst or the second TRS burst within the TTI based at least in part on the priority order.

25. The apparatus of claim 23 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, from the configuration information, at least one TRS parameter, wherein the at least one TRS parameter is one or more of a TRS burst duration, a TRS burst periodicity parameter, an aspect of a TRS tone, a TRS symbol spacing parameter, a TRS number parameter, an offset parameter, and a TRS bandwidth parameter.

26. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

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

select a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

transmit configuration information indicating the first burst duration and the second burst duration; and

transmit a first TRS burst having the first burst duration and a second TRS burst having the second burst duration.

27. The apparatus of claim 26 , wherein the instructions to transmit the first TRS burst and the second TRS burst are executable by the processor to cause the apparatus to:

alternate between transmitting the first TRS burst and the second TRS burst in each time interval of a plurality of time intervals.

28. The apparatus of claim 26 , wherein the instructions are further executable by the processor to cause the apparatus to:

allocate a first resource and a second resource to a user equipment (UE), wherein the configuration information indicates that each of the first resource and the second resource have been allocated to the UE.

29. The apparatus of claim 28 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine a time offset between the first resource and the second resource, wherein the configuration information indicates the time offset.

30. The apparatus of claim 28 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine a priority order of the first resource relative to the second resource, wherein the configuration information indicates the priority order.

31. An apparatus for wireless communication, comprising:

means for receiving configuration information indicating a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

means for detecting a first TRS burst having the first burst duration and a second TRS burst having the second burst duration based at least in part on the configuration information; and

means for performing resource tracking based at least in part on the detected first TRS burst and the second TRS burst.

32. The apparatus of claim 31 , further comprising:

means for determining, from the configuration information, that the first burst duration corresponds to a first time interval and the second burst duration corresponds to a second time interval, the second time interval occurring after the first time interval.

33. The apparatus of claim 31 , further comprising:

means for determining, from the configuration information, that transmissions of TRS bursts are scheduled to alternate between the first burst duration and the second burst duration in each time interval of a plurality of time intervals.

34. The apparatus of claim 31 , further comprising:

means for determining, from the configuration information, that a first resource and a second resource have been allocated to the UE, wherein the first burst duration corresponds to the first resource and the second burst duration corresponds to the second resource.

35. The apparatus of claim 31 , further comprising:

means for determining, from the configuration information, at least one TRS parameter, wherein the at least one TRS parameter is one or more of a TRS burst duration parameter, a TRS burst periodicity parameter, an aspect of a TRS tone, a TRS symbol spacing parameter, a TRS number parameter, an offset parameter, and a TRS bandwidth parameter.

36. The apparatus of claim 31 , further comprising:

means for determining, from the configuration information, a plurality of burst durations and a corresponding time interval duration for each of the plurality of burst durations, the plurality of burst durations including the first and second burst durations; and

means for monitoring for a plurality of TRS bursts based at least in part on the plurality of burst durations and the corresponding time interval durations, the plurality of TRS bursts including the first and second TRS bursts.

37. The apparatus of claim 31 , further comprising:

means for determining, from the configuration information, a frequency offset parameter; and

means for monitoring for the first TRS burst based at least in part on the frequency offset parameter.

38. The apparatus of claim 34 , further comprising means for determining, from the configuration information, a periodicity of a time interval and a time offset, wherein detecting the first TRS burst having the first burst duration and the second TRS burst having the second burst duration comprises:

means for monitoring, within each instance of the time interval, for a TRS burst having the first burst duration at a first location and for a TRS burst having the second burst duration at a second location corresponding to the offset.

39. The apparatus of claim 34 , further comprising:

means for determining that the first resource is scheduled to collide with the second resource during a transmission time interval (TTI).

40. The apparatus of claim 37 , further comprising:

means for determining, from the configuration information, tone spacing, wherein monitoring for the first TRS burst is based at least in part on the tone spacing.

41. The apparatus of claim 39 , further comprising:

means for determining, based at least in part on the configuration information or a rule, a priority order of the first resource relative to the second resource; and

means for monitoring for one of the first TRS burst or the second TRS burst within the TTI based at least in part on the priority order.

42. An apparatus for wireless communication, comprising:

means for selecting a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

means for transmitting configuration information indicating the first burst duration and the second burst duration; and

means for transmitting a first TRS burst having the first burst duration and a second TRS burst having the second burst duration.

43. The apparatus of claim 42 , wherein the means for transmitting the first TRS burst and the second TRS burst comprises:

means for alternating between transmitting the first TRS burst and the second TRS burst in each time interval of a plurality of time intervals.

44. The apparatus of claim 42 , further comprising:

means for allocating a first resource and a second resource to a user equipment (UE), wherein the configuration information indicates that each of the first resource and the second resource have been allocated to the UE.

45. The apparatus of claim 44 , further comprising:

means for determining a time offset between the first resource and the second resource, wherein the configuration information indicates the time offset.

46. The apparatus of claim 44 , further comprising:

means for determining a priority order of the first resource relative to the second resource, wherein the configuration information indicates the priority order.

47. The apparatus of claim 44 , further comprising:

means for determining a plurality of burst durations and a corresponding time interval duration for each of the plurality of burst durations, the plurality of burst durations including the first and second burst durations, wherein the configuration information indicates the plurality of burst durations and the corresponding time interval durations.

48. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to:

receive configuration information indicating a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

detect a first TRS burst having the first burst duration and a second TRS burst having the second burst duration based at least in part on the configuration information; and

perform resource tracking based at least in part on the detected first TRS burst and the second TRS burst.

49. A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to:

select a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration;

transmit configuration information indicating the first burst duration and the second burst duration; and

transmit a first TRS burst having the first burst duration and a second TRS burst having the second burst duration.