Method and apparatus for transmitting device-to-device related information in wireless communication system

An evolved Node-B (eNB) in a wireless communication system, the eNB comprising:

• a memory;
• a radio frequency (RF) unit;
• and
• a processor, coupled to the memory and the RF unit, that:
• configures a device-to-device (D2D) mode to indicate which D2D mode a user equipment (UE) operates in for a D2D communication, and
• controls the RF unit to transmit an information on the configured D2D mode to the UE,
• wherein the D2D mode is one of an evolved-universal mobile telecommunications system (UMTS) terrestrial radio access network (E-UTRAN) planned mode or a UE autonomous mode,
• wherein the E-UTRAN planned mode is a D2D mode in which the eNB controls radio resources for the D2D communication, and
• wherein the UE autonomous mode is a D2D mode in which the UE controls radio resources for the D2D communication.