Signal transmitting method for device-to-device (D2D) communication in wireless communication system and device therefor

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

• a transmitter and a receiver;
• and
• a processor, coupled to the transmitter and receiver, that:
• receives a destination identity (ID) for D2D communication,
• controls the transmitter to transmit, to a second UE, the D2D data signal through an uplink subframe, and
• controls the transmitter to transmit, to the second UE, a DeModulation Reference Signal (DM-RS) related to the D2D data signal,
• wherein a scrambling sequence for the D2D data signal, a value of a cyclic shift of the DM-RS, and a value of an orthogonal cover code (OCC) of the DM-RS are determined based on respective partial bits constituting the destination ID, and wherein the respective partial bits are not all bits constituting the destination ID.