Method and device for transmitting synchronization signal

A method for transmitting a synchronization signal, applied to a user equipment (UE) side, comprising:

• receiving an information block including an SSB;
• determining whether the SSB belongs to a basic group or an extended group, wherein each of the basic group and the extended group includes a SSB with a same sequence number;
• the SSB with the same sequence number in the basic group and the SSB with the same sequence number in the extended group correspond to different time-frequency resources;
• performing synchronization process according to the group to which the SSB belongs.

A device for transmitting a synchronization signal, applied to a base station, comprising:

• a processor;
• and
• memory storing instructions executable by the processor;
• wherein the processor is
• configured to, upon execution of the instructions:
• perform channel detection for a time-frequency resource corresponding to a synchronous broadcast block (SSB) in a basic group to be sent and a time-frequency resource corresponding to a SSB in an extended group to be sent respectively, to detect whether a time-frequency resource is idle, wherein each of the basic group and the extended group includes a SSB with a same sequence number;
• the SSB with the same sequence number in the basic group and the SSB with the same sequence number in the extended group correspond to different time-frequency resources;
• and
• when a time-frequency resource corresponding to at least one SSB in the basic group and the extended group is idle, transmit an information block on the time-frequency resource, the information block including the at least one SSB.