BASE STATION DEVICE, MOBILE STATION DEVICE, AND COMMUNICATION CONTROL METHOD

摘要

An RS transmission instruction unit instructs a mobile station device to transmit a reference signal. An RS measurement instruction unit instructs a relay station device to measure the reference signal transmitted by the mobile station device. A difference calculation unit receives information indicating the reception quality in the relay station device as the measurement result of the reference signal. An up access link quality measurement unit measures the reference signal transmitted by the mobile station device. The difference calculation unit calculates a difference between the information indicating the reception quality in the relay station device and information indicating the reception quality of the measured reference signal. A difference transmission unit notifies the mobile station device of the calculated difference. A down direct link quality measurement unit measures the reference signal transmitted from a base station device. A CQI calculation unit receives a difference from the base station device. The CQI calculation unit calculates information indicating the reception quality in the device thereof using the measurement result of the reference signal and the received difference.