Sidelink synchronization signal block patterns for multiple listen-before-talk opportunities
Wireless communications systems, apparatuses, and methods are provided. A method of wireless communication performed by a first sidelink user equipment (UE) includes performing a listen-before-talk (LBT) procedure and transmitting, to a second sidelink UE based on the LBT procedure being successful, a sidelink synchronization signal block (S-SSB) in one of a plurality of candidate S-SSB locations of a slot.
1. A method of wireless communication performed by a first sidelink user equipment (UE), the method comprising:
performing a listen-before-talk (LBT) procedure; anel transmitting, to a second sidelink UE based on the LBT procedure being successful, a sidelink synchronization signal block (S-SSB) in one of a plurality of candidate S-SSB locations of a slot, wherein a leading symbol of the S-SSB comprises an automatic gain control (AGC) symbol; and
rate matching the AGC symbol with a physical broadcast channel (PBCH) symbol of the S-SSB.
2. The method of claim 1 , wherein content of the AGC symbol matches content of the physical broadcast channel (PBCH) symbol of the S-SSB.
3. The method of claim 2 , wherein the content of the AGC symbol matches the content of a trailing PBCH symbol of the S-SSB.
4. The method of claim 1 , wherein the slot comprises three candidate S-SSB locations.
5. The method of claim 1 , wherein a trailing symbol of a first candidate S-SSB location overlaps a leading symbol of a second S-SSB candidate location.
6. The method of claim 5 , wherein a trailing symbol of the second candidate S-SSB location overlaps a leading symbol of a third S-SSB candidate location.
7. The method of claim 1 , wherein each of the candidate S-SSB locations comprises five symbols.
8. A method of wireless communication performed by a first sidelink user equipment (UE), the method comprising:
receiving, from a second sidelink UE, a sidelink synchronization signal block (S-SSB) in one of a plurality of candidate S-SSB locations of a slot, wherein a leading symbol of the S-SSB comprises an automatic gain control (AGC) symbol; and
wherein the AGC symbol is rate matched with a physical broadcast channel (PBCH) symbol of the S-SSB.
9. A first sidelink user equipment (UE) comprising:
a memory;
a transceiver; and
at least one processor coupled to the memory and the transceiver, wherein the first sidelink UE is configured to:
perform a listen-before-talk (LBT) procedure; and
transmit, to a second sidelink UE based on the LBT procedure being successful, a sidelink synchronization signal block (S-SSB) in one of a plurality of candidate S-SSB locations of a slot, wherein a leading symbol of the S-SSB comprises an automatic gain control (AGC) symbol; and
rate match the AGC symbol with a physical broadcast channel (PBCH) symbol of the S-SSB.
10. The first sidelink UE of claim 9 , wherein content of the AGC symbol matches content of the physical broadcast channel (PBCH) symbol of the S-SSB.
11. The first sidelink UE of claim 10 , wherein the content of the AGC symbol matches the content of a trailing PBCH symbol of the S-SSB.
12. The first sidelink UE of claim 9 , wherein the slot comprises three candidate S-SSB locations.
13. The first sidelink UE of claim 9 , wherein a trailing symbol of a first candidate S-SSB location overlaps a leading symbol of a second S-SSB candidate location.
14. The first sidelink UE of claim 13 , wherein a trailing symbol of the second candidate S-SSB location overlaps a leading symbol of a third S-SSB candidate location.
15. The first sidelink UE of claim 9 , wherein each of the candidate S-SSB locations comprises five symbols.
16. A first sidelink user equipment (UE) comprising:
a memory;
a transceiver; and
at least one processor coupled to the memory and the transceiver, wherein the first sidelink UE is configured to:
receive, from a second sidelink UE, a sidelink synchronization signal block (S-SSB) in one of a plurality of candidate S-SSB locations of a slot, wherein a leading symbol of the S-SSB comprises an automatic gain control (AGC) symbol; and
wherein the AGC symbol is rate matched with a physical broadcast channel (PBCH) symbol of the S-SSB.
17. The first sidelink UE of claim 16 , wherein content of the AGC symbol matches content of the physical broadcast channel (PBCH) symbol of the S-SSB.
18. The first sidelink UE of claim 17 , wherein the content of the AGC symbol matches the content of a trailing PBCH symbol of the S-SSB.
19. The first sidelink UE of claim 16 , wherein the slot comprises three candidate S-SSB locations.
20. The first sidelink UE of claim 16 , wherein a trailing symbol of a first candidate S-SSB location overlaps a leading symbol of a second S-SSB candidate location.
21. The first sidelink UE of claim 20 , wherein a trailing symbol of the second candidate S-SSB location overlaps a leading symbol of a third S-SSB candidate location.
22. The first sidelink UE of claim 20 , wherein each of the candidate S-SSB locations comprises five symbols.