MOBILE COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, NETWORK DEVICE, AND WIRELESS TERMINAL

摘要

A mobile communication system supports D2D communication being direct terminal-to-terminal communication. The mobile communication system comprises: UE 100-1 that receives a first control signal from a cellular communication network, and performs the D2D communication with UE 100-2 based on the first control signal. The UE 100-1 connects to cable communication network 40 and receives downlink user data addressed to the UE 100-2 from the cable communication network 40. The UE 100-1 performs D2D data relay of transmitting the downlink user data received from the cable communication network 40, to the UE 100-2 through the D2D communication.