MOBILE COMMUNICATION SYSTEM, BASE STATION, AND USER TERMINAL

摘要

A mobile communication system according to the present invention supports a D2D communication that is a direct terminal-to-terminal communication. The system comprises: a base station configured to perform a predetermined radio communication by using a specific frequency band; and a user terminal configured to exist in a cell of the base station. The base station permits the user terminal to perform the D2D communication in which the specific frequency band is used, in a time period during which the predetermined radio communication is stopped.