Reference signal tone location shift

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

identifying a tone satisfying an impairment value;

selecting configuration information for communicating with a base station based at least in part on the tone;

selectively transmitting a signal to the base station indicating the configuration information; and

receiving a configuration signal from the base station indicating a reference signal tone pattern for communicating reference signals between the UE and the base station.

2. The method of claim 1 , wherein selectively transmitting the signal indicating the configuration information comprises:

transmitting a signal identifying the tone.

3. The method of claim 1 , wherein selectively transmitting the signal indicating the configuration information comprises:

transmitting a signal identifying the reference signal tone pattern.

4. The method of claim 1 , wherein selectively transmitting the signal indicating the configuration information comprises:

transmitting a signal identifying an offset configuration for a baseline reference signal tone pattern, wherein the reference signal tone pattern is based at least in part on the offset configuration.

5. The method of claim 4 , wherein the offset configuration comprises a bit or field configured to indicate a request for an offset from the baseline reference signal tone pattern.

6. The method of claim 4 , wherein the offset configuration comprises a bit or field configured to indicate a request for the base station to select the reference signal tone pattern.

7. The method of claim 4 , wherein the offset configuration comprises information identifying a difference between the baseline reference signal tone pattern and the tone.

8. The method of claim 7 , wherein the difference comprises a time-frequency difference.

9. The method of claim 7 , wherein the difference comprises an indication to delete one or more tones from the baseline reference signal tone pattern.

10. The method of claim 4 , further comprising:

identifying the baseline reference signal tone pattern based at least in part on one or more of a previously used reference signal tone pattern, or a grant signal carried in a downlink control information (DCI) message, or a configured baseline reference signal tone pattern.

11. The method of claim 1 , wherein selecting the configuration information comprises:

selecting, based at least in part on the tone, the reference signal tone pattern from a set of available reference signal tone patterns, wherein the signal identifies the selected reference signal tone pattern.

12. The method of claim 11 , wherein the signal comprises an indication of whether the base station is to select the reference signal tone pattern.

13. The method of claim 1 , wherein selecting the configuration information comprises:

identifying a UE tone for communications between the UE and the base station, wherein the UE tone corresponds to the tone.

14. The method of claim 1 , wherein selectively transmitting the signal to the base station comprises:

determining that the tone satisfies an interference level threshold with respect to communications between the UE and the base station, wherein the signal is transmitted to the base station based at least in part on the determining.

15. The method of claim 1 , wherein selectively transmitting the signal to the base station comprises:

determining that the tone fails to satisfy an interference level threshold with respect to communications between the UE and the base station, wherein the signal is not transmitted to the base station based at least in part on the determining.

16. The method of claim 1 , further comprising:

communicating the reference signals with the base station according to the reference signal tone pattern.

17. The method of claim 16 , further comprising:

communicating data between the UE and the base station, wherein the data is decoded based at least in part on the reference signals.

18. The method of claim 16 , wherein the communicating comprises uplink communications, downlink communications, or a combination thereof.

19. The method of claim 1 , wherein the configuration signal is received in a downlink control information (DCI) message.

20. The method of claim 1 , wherein the tone comprises one or more of a receive direct current (DC) tone of the UE, or a tone satisfying a signal-to-noise ratio (SNR) threshold, or a tone satisfying an interference level threshold, or a combination thereof.

21. A method for wireless communication at a base station, comprising:

identifying a tone of a user equipment (UE), the tone satisfying an impairment value;

selecting, based at least in part on the tone, a reference signal tone pattern for communicating reference signals between the UE and the base station; and

transmitting a configuration signal to the UE indicating the reference signal tone pattern.

22. The method of claim 21 , wherein identifying the tone comprises:

receiving a signal from the UE identifying the tone.

23. The method of claim 21 , wherein identifying the tone comprises:

receiving a signal from the UE identifying the reference signal tone pattern, wherein the reference signal tone pattern is selected based at least in part on the signal.

24. The method of claim 21 , wherein identifying the tone comprises:

receiving a signal from the UE identifying an offset configuration for a baseline reference signal tone pattern, wherein the reference signal tone pattern is selected based at least in part on the offset configuration.

25. The method of claim 21 , wherein identifying the tone comprises:

identifying a UE tone for communications between the UE and the base station, wherein the UE tone corresponds to the tone.

26. The method of claim 21 , further comprising:

communicating the reference signals with the UE according to the reference signal tone pattern.

27. The method of claim 26 , further comprising:

communicating data between the UE and the base station, wherein the data is decoded based at least in part on the reference signals.

28. The method of claim 26 , wherein the communicating comprises uplink communications, downlink communications, or a combination thereof.

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

identify a tone satisfying an impairment value;

select configuration information for communicating with a base station based at least in part on the tone;

selectively transmit a signal to the base station indicating the configuration information; and

receive a configuration signal from the base station indicating a reference signal tone pattern for communicating reference signals between the UE and the base station.

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

identify a tone of a user equipment (UE), the tone satisfying an impairment value;

select, based at least in part on the tone, a reference signal tone pattern for communicating reference signals between the UE and the base station; and

transmit a configuration signal to the UE indicating the reference signal tone pattern.