Method whereby terminal transmits device-to-device (d2d) signal in wireless communication system that supports d2d communication, and apparatus therefor

A method of controlling, by a base station, D2D signal transmission at a user equipment (UE) in a wireless communication system supporting D2D communication, the method comprising:

• receiving information on a technology congestion level for a predetermined resource region from at least one UE;
• determining, based on the technology congestion level, whether D2D signal transmission to which a first radio technology is applied is allowed;
• and
• transmitting, to the at least one UE, information on whether the D2D signal transmission to which the first radio technology is applied is allowed,
• wherein the technology congestion level is related to a ratio of how many times a signal including information on use of the first radio technology is received in the predetermined resource region.

A user equipment (UE) for transmitting a device-to-device (D2D) signal in a wireless communication system supporting D2D communication, the UE comprising:

• a transceiver;
• and
• a processor configured to measure a technology congestion level for a predetermined resource region,
• wherein the processor is configured to determine a radio technology to be applied to D2D signal transmission based on the technology congestion level and control the transceiver to transmit the D2D signal based on the determined radio technology,
• wherein the technology congestion level is related to a ratio of how many times a signal including information on use of a specific radio technology is received in the predetermined resource region.