A mobile user terminal (UE), which measures downlink channel quality, and
which transmits downlink quality information indicating the measured
downlink channel quality and an uplink pilot signal to be used for
measuring uplink channel quality to a base station (BS), comprises a
transmit time control unit (216), which synchronizes transmit time of the
downlink quality information and transmit time of the uplink pilot signal
relative to each other. And/or the mobile user terminal (UE) comprises a
radio transmitting unit (212) which transmits the downlink quality
information and the uplink pilot signal by using the same carrier
frequency or by using adjacent carrier frequencies selected from among a
plurality of preassigned carrier frequencies.