METHOD OF ADJUSTING A TRANSMIT POWER FOR DEVICE-TO-DEVICE COMMUNICATION, USER EQUIPMENT, GROUP HEAD OF A DEVICE-TO-DEVICE COMMUNICATION GROUP, AND COMMUNICATION SYSTEM

摘要

To adjust a transmit power for device-to-device communication, a user equipment (4) which performs the device-to-device communication using the transmit power detects that the user equipment (4) enters a coverage area (10) of a radio communication unit (11). The transmit power of the user equipment (4) for the device-to-device communication is decreased in response to detecting that the user equipment (4) enters the coverage area (10) of the radio communication unit (11).