US 12,232,057 B2
Method and apparatus for selecting criteria for sidelink synchronization in NR V2X
Woosuk Ko, Seoul (KR); Hanbyul Seo, Seoul (KR); and Seungmin Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/771,765
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Oct. 23, 2020, PCT No. PCT/KR2020/014569
§ 371(c)(1), (2) Date Apr. 25, 2022,
PCT Pub. No. WO2021/080372, PCT Pub. Date Apr. 29, 2021.
Claims priority of provisional application 62/932,474, filed on Nov. 7, 2019.
Claims priority of application No. 10-2019-0132417 (KR), filed on Oct. 23, 2019.
Prior Publication US 2022/0417872 A1, Dec. 29, 2022
Int. Cl. H04W 56/00 (2009.01); H04W 92/18 (2009.01)
CPC H04W 56/00 (2013.01) [H04W 92/18 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for performing, by a first apparatus, wireless communication, the method comprising:
receiving a plurality of sidelink-synchronization signal blocks (S-SSBs) from a plurality of synchronization sources,
wherein the plurality of synchronization sources includes a plurality of first synchronization sources that transmit a synchronization signal based on global navigation satellite system (GNSS) and a plurality of second synchronization sources that transmit a synchronization signal that is not based on GNSS;
selecting a first representative synchronization source from among the plurality of first synchronization sources based on reference signal received power (RSRP) related to each of the plurality of first synchronization sources;
selecting a second representative synchronization source from among the plurality of second synchronization sources based on a sidelink synchronization signal (SLSS) identifier (ID) related to each of the plurality of second synchronization sources;
selecting one synchronization source from among the selected first representative synchronization source and the selected second representative synchronization source based on RSRP related to the selected first representative synchronization source and RSRP related to the selected second representative synchronization source;
performing synchronization based on an S-SSB related to the selected one synchronization source; and
transmitting a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH) to a second apparatus based on the synchronization,
wherein an SLSS ID related to each of the plurality of S-SSBs becomes a criterion for selecting one synchronization source from among the plurality of synchronization sources, based on that an RSRP value related to each of the plurality of S-SSBs is greater than or equal to a minimum RSRP threshold.