Method for measurement of UE-to-UE reference signal in new radio networks with cross-link interference

1. A user equipment (UE) comprising:

a radio front end configured to receive a signal from a second UE and downlink (DL) timing information from a transmission reception point (TRP);

a timing correction circuit configured to generate a corrected timing signal based on the received signal, the DL timing information and a reference sequence, and configured to perform sliding-window cross-correlation on the received signal;

a symbol extraction circuit configured to extract a symbol from the received signal and the corrected timing signal;

a fast Fourier transform (FFT) circuit configured to transform the symbol to a transformed symbol;

a cross-correlation circuit configured to cross-correlate the transformed symbol with the reference sequence to generate a correlation result; and

a power estimation circuit configured to estimate a received signal received power (RSRP) based on the correlation result.

2. The UE of claim 1 , wherein the sliding-window cross-correlation applies a predefined correction window size.

3. The UE of claim 1 , wherein the timing correction circuit is further configured to:

select a first portion of the received signal according to a correction window size;

perform cross-correlation between the first portion of the received signal and the reference sequence;

select a second portion of the received signal according to the correction window size; and

perform cross-correlation between the second portion of the received signal and the reference sequence.

4. The UE of claim 3 , wherein the timing correction circuit is further configured to:

compare the cross-correlation of the first portion and the cross-correlation of the second portion;

determine whether the first portion or the second portion has a higher cross-correlation; and

generate the corrected timing signal based on the determination.

5. The UE of claim 1 , wherein the received signal is a sounding reference signal (SRS).

6. The UE of claim 1 , wherein the received signal is a demodulation reference signal (DMRS).

7. A method comprising:

receiving a signal from a user equipment UE and downlink (DL) timing information from a transmission reception point (TRP);

generating a corrected timing signal based on the received signal, the DL timing information and a reference sequence, the generating including performing sliding-window cross-correlation on the received signal;

extracting a symbol from the received signal and the corrected timing signal;

transforming, using a fast Fourier transform (FFT) circuit, the symbol to a transformed symbol;

cross-correlating the transformed symbol with the reference sequence to generate a correlation result; and

power estimating a received signal received power (RSRP) based on the correlation result.

8. The method of claim 7 , wherein the performing sliding-window cross-correlation includes applying a predefined correction window size.

9. The method of claim 7 , wherein the generating the corrected timing signal comprises:

select a first portion of the received signal according to a correction window size;

perform cross-correlation between the first portion of the received signal and the reference sequence;

select a second portion of the received signal according to the correction window size; and

perform cross-correlation between the second portion of the received signal and the reference sequence.

10. The method of claim 9 , wherein the generating the corrected timing signal further comprises:

compare the cross-correlation of the first portion and the cross-correlation of the second portion;

determine whether the first portion or the second portion has a higher cross-correlation; and

generate the corrected timing signal based on the determination.

11. The method of claim 7 , wherein the received signal is a sounding reference signal (SRS).

12. The method of claim 7 , wherein the received signal is a demodulation reference signal (DMRS).

13. A non-transitory computer-readable media (CRM) comprising computer instructions, where upon execution of the computer instructions by one or more processors of a user equipment (UE), cause the UE to:

receive a signal from a second UE and downlink (DL) timing information from a transmission reception point (TRP);

generate a corrected timing signal based on the received signal, the DL timing information and a reference sequence, the generating including performing sliding-window cross-correlation on the received signal;

extract a symbol from the received signal and the corrected timing signal;

transform, using a fast Fourier transform (FFT) circuit, the symbol to a transformed symbol;

cross-correlate the transformed symbol with the reference sequence to generate a correlation result; and

power estimate a received signal received power (RSRP) based on the correlation result.

14. The non-transitory CRM of claim 13 , wherein the computer instructions further cause the UE to perform sliding-window cross-correlation by applying a predefined correction window size.

15. The non-transitory CRM of claim 13 , wherein the computer instructions further cause the UE to generate the corrected timing signal by:

selecting a first portion of the received signal according to a correction window size;

performing cross-correlation between the first portion of the received signal and the reference sequence;

selecting a second portion of the received signal according to the correction window size; and

performing cross-correlation between the second portion of the received signal and the reference sequence.

16. The non-transitory CRM of claim 15 , wherein the computer instructions further cause the UE to generate the corrected timing signal by:

comparing the cross-correlation of the first portion and the cross-correlation of the second portion;

determining whether the first portion or the second portion has a higher cross-correlation; and

generating the corrected timing signal based on the determination.

17. The CRM of claim 13 , wherein the received signal is a sounding reference signal (SRS) or a demodulation reference signal (DMRS).