Method by which terminal performs sidelink communication in wireless communication system for supporting sidelink, and apparatus therefor

A first user equipment (UE) configured to transmit a first signal for a direct communication between UEs in a wireless communication system, the first UE comprising:

• a radio frequency (RF) transceiver;
• and
• a processor coupled to the RF transceiver,
• wherein the processor is configured to execute instructions to perform operations comprising:
• transmitting a discovery signal in a discovery resource region,
• receiving, from a second UE, a discovery response signal for the discovery signal,
• selecting one resource region from among a plurality of resource regions associated with the discovery resource region, and
• transmitting, to the second UE in the one resource region, the first signal, and
• wherein a nominal power and a scaling factor related to a transmission power of the first signal are determined based on a cyclic prefix (CP) type and a subcarrier spacing (SCS) configured for the one resource region.