Sidelink primary and secondary synchronization signal transmission
Apparatus and methods for S-SSB transmission are provided. In an aspect, an S-SSS symbol is followed by a gap symbol. In another aspect, a first PSBCH symbol is followed by an S-SSS symbol. In a further aspect, the same MPR is used for the entire S-SSB, thus reducing/mitigating transient periods. For example, the S-SSS symbols in the S-SSB may be selected from a set of sequences having the same MPR as the S-PSS symbols. Alternatively, the MPR of the entire S-SSB may be selected based on a sequence ID of an S-SSS. In an aspect, additional symbols may be configured in the S-SSB to compensate for power reduction.
1. A method of wireless communication, comprising:
configuring, by a user equipment (UE), a gap symbol as a last symbol of a sidelink synchronization signal block (S-SSB);
configuring, by the UE, at least one symbol of a sidelink secondary synchronization signal (S-SSS) prior and adjacent to the gap symbol, wherein a portion of the at least one symbol of the S-SSS overlaps with the gap symbol; and
transmitting, by the UE, the S-SSB.
2. An apparatus comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to execute the instructions to perform wireless communication comprising:
configuring a gap symbol as a last symbol of a sidelink synchronization signal block (S-SSB);
configuring at least one symbol of a sidelink secondary synchronization signal (S-SSS) prior and adjacent to the gap symbol, wherein a portion of the at least one symbol of the S-SSS overlaps with the gap symbol; and
transmitting the S-SSB.
3. An apparatus for wireless communication, comprising:
means for configuring a gap symbol as a last symbol of a sidelink synchronization signal block (S-SSB);
means for configuring at least one symbol of a sidelink secondary synchronization signal (S-SSS) prior and adjacent to the gap symbol, wherein a portion of the at least one symbol of the S-SSS overlaps with the gap symbol; and
means for transmitting the S-SSB.
4. A non-transitory computer-readable medium comprising code executable by one or more processors to perform wireless communication comprising:
configuring, by a user equipment (UE), a gap symbol as a last symbol of a sidelink synchronization signal block (S-SSB);
configuring, by the UE, at least one symbol of a sidelink secondary synchronization signal (S-SSS) prior and adjacent to the gap symbol, wherein a portion of the at least one symbol of the S-SSS overlaps with the gap symbol; and
transmitting, by the UE, the S-SSB.
5. The method of claim 1 , wherein the S-SSB is associated with maximum power reduction (MPR) values derived based on S-SSS sequences used for the S-SSS.
6. The method of claim 1 , wherein the at least one symbol of the S-SSS comprises at least two symbols.
7. The method of claim 1 , wherein the S-SSB comprises at least one symbol of PSBCH prior to the at least one symbol of the S-SSS.
8. The method of claim 7 , wherein the S-SSB comprises at least one symbol of S-PSS prior to the at least one symbol of PSBCH.
9. The method of claim 8 , where the S-SSB comprises at least one other symbol of PSBCH prior to the at least one symbol of S-PSS.
10. The method of claim 7 , wherein the S-SSB comprises at least one transient period after the at least one symbol of PSBCH.
11. The method of claim 10 , wherein the portion of the at least one symbol of the S-SSS comprises a transient period of the at least one transient period.
12. The apparatus of claim 2 , wherein the S-SSB is associated with maximum power reduction (MPR) values derived based on S-SSS sequences used for the S-SSS.
13. The apparatus of claim 2 , wherein the at least one symbol of the S-SSS comprises at least two symbols.
14. The apparatus of claim 2 , wherein the S-SSB comprises at least one symbol of PSBCH prior to the at least one symbol of the S-SSS.
15. The apparatus of claim 14 , wherein the S-SSB comprises at least one symbol of S-PSS prior to the at least one symbol of PSBCH.
16. The apparatus of claim 15 , wherein the S-SSB comprises at least one other symbol of PSBCH prior to the at least one symbol of S-PSS.
17. The apparatus of claim 14 , wherein the S-SSB comprises at least one transient period after the at least one symbol of PSBCH.
18. The apparatus of claim 17 , wherein the portion of the at least one symbol of the S-SSS comprises a transient period of the at least one transient period.
19. The apparatus for wireless communication of claim 3 , wherein the S-SSB is associated with maximum power reduction (MPR) values derived based on S-SSS sequences used for the S-SSS.
20. The apparatus for wireless communication of claim 3 , wherein the at least one symbol of the S-SSS comprises at least two symbols.
21. The apparatus for wireless communication of claim 3 , wherein the S-SSB comprises at least one symbol of PSBCH prior to the at least one symbol of the S-SSS.
22. The apparatus for wireless communication of claim 21 , wherein the S-SSB comprises at least one symbol of S-PSS prior to the at least one symbol of PSBCH.
23. The apparatus for wireless communication of claim 22 , wherein the S-SSB comprises at least one other symbol of PSBCH prior to the at least one symbol of S-PSS.
24. The apparatus for wireless communication of claim 21 , wherein the S-SSB comprises at least one transient period after the at least one symbol of PSBCH, wherein the portion of the at least one symbol of the S-SSS comprises a transient period of the at least one transient period.
25. The non-transitory computer-readable medium of claim 4 , wherein the S-SSB is associated with maximum power reduction (MPR) values derived based on S-SSS sequences used for the S-SSS.
26. The non-transitory computer-readable medium of claim 4 , wherein the at least one symbol of the S-SSS comprises at least two symbols.
27. The non-transitory computer-readable medium of claim 4 , wherein the S-SSB comprises at least one symbol of PSBCH prior to the at least one symbol of the S-SSS.
28. The non-transitory computer-readable medium of claim 27 , wherein the S-SSB comprises at least one symbol of S-PSS prior to the at least one symbol of PSBCH.
29. The non-transitory computer-readable medium of claim 28 , wherein the S-SSB comprises at least one other symbol of PSBCH prior to the at least one symbol of S-PSS.
30. The non-transitory computer-readable medium of claim 27 , wherein the S-SSB comprises at least one transient period after the at least one symbol of PSBCH, wherein the portion of the at least one symbol of the S-SSS comprises a transient period of the at least one transient period.