Method and device for generating sidelink synchronization signal block in wireless communication system

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

• one or more processors;
• and
• one or more memories operably connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:
• generate a sidelink synchronization signal block (S-SSB) including a sidelink primary synchronization signal (SPSS), a sidelink secondary synchronization signal (SSSS) and a sidelink physical broadcast channel (PSBCH);
• and
• transmit, to a second UE, the S-SSB,
• wherein at least one of a symbol period related to the SPSS, a symbol period related to the SSSS, or a symbol period related to the PSBCH includes a transition period,
• wherein the transition period is determined based on at least one of a priority of the SPSS, a priority of the SSSS, or a priority of the PSBCH, and
• wherein, based on an existence of an automatic gain control (AGC) symbol period before a symbol period related to a first SPSS, the transition period is determined in a part of the AGC symbol period.

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:
• generate a sidelink synchronization signal block (S-SSB) including a sidelink primary synchronization signal (SPSS), a sidelink secondary synchronization signal (SSSS) and a sidelink physical broadcast channel (PSBCH);
• and
• transmit, to a second device, the S-SSB,
• wherein at least one of a symbol period related to the SPSS, a symbol period related to the SSSS, or a symbol period related to the PSBCH includes a transition period,
• wherein the transition period is determined based on at least one of a priority of the SPSS, a priority of the SSSS, or a priority of the PSBCH, and
• wherein, based on an existence of an automatic gain control (AGC) symbol period before a symbol period related to a first SPSS, the transition period is determined in a part of the AGC symbol period.