摘要:
A mobile communication system includes a mobile station device and a base station device. The mobile station device has multiple modes concerning a gap section control in a state of being wirelessly connected to the base station device and includes a feedback-period setting unit that sets a feedback period for notifying the base station device of information concerning a downlink channel quality indication in each of the modes based on downlink-data requirement conditions. The base station device includes a resource-allocation-period setting unit that sets an uplink resource allocation period for feedback of the downlink channel quality indication in each of the modes or a downlink resource allocation period based on the downlink-data requirement conditions.