Method for transmitting and receiving data in wireless communication system, and device for same

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

• a radio frequency (RF) unit for transmitting and receiving a wireless signal;
• and
• a processor functionally connected to the RF unit,
• wherein the processor is configured to:
• receive, from a base station, a resource pool used in a D2D communication via a higher layer signaling,
• wherein the resource pool includes first resource information related to a first control information transmission and second resource information related to a D2D data transmission;
• receive, from the base station, a first downlink control information (DCI) format related to the D2D communication;
• generate the first control information based on the first DCI format;
• transmit, to a second terminal, the first control information,
• wherein the first control information includes information related to the D2D data transmission;
• and
• transmit the D2D data to the second terminal,
• wherein at least one padding bit is appended until the size of a second DCI format related to a communication with the base station is equal to the size of the first DCI format.