Method and apparatus for selecting synchronization reference in nr v2x

A first device configured to perform wireless communication, the first device comprising:

• one or more memories storing instructions;
• one or more transceivers;
• and
• one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:
• receive, from a second device, one or more sidelink synchronization signal blocks (S-SSBs) including a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), and a physical sidelink broadcast channel (PSBCH);
• obtain an average reference signal received power (RSRP) value for at least one S-SSB among the one or more S-SSBs;
• and
• determine, based on the average RSRP value, whether or not to select the second device as a synchronization reference.

An apparatus configured to control a first user equipment (UE), the apparatus comprising:

• one or more processors;
• and
• one or more memories operably connectable to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:
• receive, from a second UE, one or more sidelink synchronization signal blocks (S-SSBs) including a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), and a physical sidelink broadcast channel (PSBCH);
• obtain an average reference signal received power (RSRP) value for at least one S-SSB among the one or more S-SSBs;
• and
• determine, based on the average RSRP value, whether or not to select the second UE as a synchronization reference.