Discovery reference signal design for quasi co- location and frame timing information in new radio user equipment
Disclosed herein are system, method, and computer program product embodiments for performing Synchronization Single Block (SSB) transmission using a number of SSB beams. An embodiment operates by determining a SSB index for a SSB based on a candidate position in a set of candidate positions and the number of SSB beams. The embodiment determines a shift value for the SSB index based on the candidate position and the number of SSB beams. The embodiment determines a frame timing for the SSB based the SSB index and the shift value for the SSB index. The embodiment then transmits, by radio front end circuitry, the SSB to a user equipment (UE) based on the frame timing for the SSB.
1. A method, comprising:
determining a Synchronization Single Block (SSB) index for an SSB based on a Physical Broadcast Channel-Demodulation Reference Signal (PBCH-DMRS);
determining a shift value for the SSB index based on a Physical Broadcast Channel (PBCH) payload;
determining a frame timing for the SSB based on the SSB index and the shift value for the SSB index; and
causing to receive the SSB from a base station based on the frame timing for the SSB.
2. The method of claim 1 , wherein determining the SSB index further comprises:
receiving the PBCH-DMRS; and
decoding the PHCH-DMRS.
3. The method of claim 1 , wherein determining the shift value further comprises:
receiving the PBCH payload; and
decoding the PBCH payload.
4. The method of claim 1 , wherein the SSB index corresponds to a candidate position in a set of candidate positions and a number of SSB beams.
5. The method of claim 4 , wherein the SSB index=modulo(the candidate position, the number of SSB beams).
6. The method of claim 1 , wherein the shift value corresponds to a candidate position in a set of candidate positions and a number of SSB beams.
7. The method of claim 6 , wherein the shift value for the SSB index=the number of SSB beams*floor(the candidate position/the number of SSB beams).
8. The method of claim 1 , wherein the frame timing for the SSB=the SSB index+the shift value for the SSB index.
9. The method of claim 1 , wherein the SSB index defines a Quasi Co-Location (QCL).
10. An apparatus, comprising
a memory; and
at least one processor, coupled to the memory, the at least one processor configured to:
determine a Synchronization Single Block (SSB) index for an SSB based on a Physical Broadcast Channel-Demodulation Reference Signal (PBCH-DMRS);
determine a shift value for the SSB index based on a Physical Broadcast Channel (PBCH) payload;
determine a frame timing for the SSB based on the SSB index and the shift value for the SSB index; and
cause to receive the SSB from a base station based on the frame timing for the SSB.
11. The apparatus of claim 10 , wherein the SSB index corresponds to a candidate position in a set of candidate positions and a number of SSB beams.
12. The apparatus of claim 11 , wherein the SSB index=modulo(the candidate position, the number of SSB beams).
13. The apparatus of claim 10 , wherein the shift value corresponds to a candidate position in a set of candidate positions and a number of SSB beams.
14. The apparatus of claim 13 , wherein the shift value for the SSB index=the number of SSB beams*floor(the candidate position/the number of SSB beams).
15. The apparatus of claim 10 , wherein the frame timing for the SSB=the SSB index+the shift value for the SSB index.
16. The apparatus of claim 10 , wherein the SSB index defines a Quasi Co-Location (QCL).
17. A non-transitory computer-readable medium (CRM) comprising instructions to, upon execution of the instructions by one or more processors, cause the one or more processors to perform operations, the operations comprising:
determining a Synchronization Single Block (SSB) index for an SSB based on a Physical Broadcast Channel-Demodulation Reference Signal (PBCH-DMRS);
determining a shift value for the SSB index based on a Physical Broadcast Channel (PBCH) payload;
determining a frame timing for the SSB based on the SSB index and the shift value for the SSB index; and
causing to receive the SSB from a base station based on the frame timing for the SSB.
18. The non-transitory CRM of claim 17 , wherein the SSB index=modulo(a candidate position in a set of candidate positions, a number of SSB beams).
19. The non-transitory CRM of claim 17 , wherein the shift value for the SSB index=a number of SSB beams*floor(a candidate position in a set of candidate positions/the number of SSB beams).
20. The non-transitory CRM of claim 17 , wherein the frame timing for the SSB=the SSB index+the shift value for the SSB index.