Operation method of device in wireless communication system, and device using same method

An apparatus, comprising:

• at least one transceiver;
• at least one memory;
• and
• at least one processor operably coupled with the at least one memory and the at least one transceiver,
• wherein the at least one processor is adapted to:
• perform an initial access procedure with a network;
• receive synchronization signal/physical broadcast channel block (SSB) configuration information from the network;
• and
• perform a forwarding operation based on the SSB configuration information,
• wherein the processor performs the forwarding operation only in a time resource in which an SSB related to a specific SSB index among SSB indexes informed by the SSB configuration information is transmitted.

A method of operating a base station in a wireless communication system, the method comprising:

• performing an initial access procedure with a network-controlled repeater (NCR) including NCR-mobile termination (MT) and NCR-Forwarding (Fwd) through the NCR-MT;
• transmitting synchronization signal/physical broadcast channel block (SSB) configuration information to the NCR-MT;
• and
• controlling a forwarding operation of the NCR-Fwd based on the SSB configuration information,
• wherein the base station controls the NCR-Fwd to perform the forwarding operation only in a time resource in which an SSB related to a specific SSB index among SSB indexes informed by the SSB configuration information is transmitted.