Method and apparatus for controlling transmit power in sidelink communication system

An operation method of a first terminal, performed in a communication system, the operation method comprising:

• receiving sidelink resource allocation information from a base station;
• transmitting a first sidelink signal to a second terminal based on the sidelink resource allocation information;
• receiving a second sidelink signal including information on a received signal strength of the first sidelink signal from the second terminal;
• calculating a path loss experienced by the first sidelink signal based on the received signal strength of the first sidelink signal;
• determining a transmit power of a third sidelink signal based on the path loss experienced by the first sidelink signal;
• and
• transmitting the third sidelink signal to the second terminal according to the transmit power of the third sidelink signal.

A first terminal performing sidelink communication, the terminal comprising:

• a processor;
• a memory electronically communicating with the processor;
• and
• instructions stored in the memory,
• wherein when the instructions are executed by the processor, the instructions cause the first terminal to:
• receive sidelink resource allocation information from a base station;
• transmit a first sidelink signal to a second terminal based on the sidelink resource allocation information;
• receive a second sidelink signal including information on a received signal strength of the first sidelink signal from the second terminal;
• calculate a path loss experienced by the first sidelink signal based on a result of receiving the second sidelink signal;
• determine a transmit power of a third sidelink signal based on the path loss experienced by the first sidelink signal;
• and
• transmit the third sidelink signal to the second terminal according to the transmit power of the third sidelink signal.