Patent ID: 8000296

Claim:
A base station, comprising: a pilot channel transmission band assignment unit configured to assign a transmission band of a pilot channel to measure an uplink reception channel state at a cycle longer than an assignment cycle of a data channel; a data channel transmission band assignment unit configured to assign resource blocks as a transmission band of the data channel to mobile stations, the resource blocks resulting from division of a system bandwidth into blocks of consecutive frequency subcarriers; a control information generation unit configured to generate a control signal to inform the mobile stations of a bandwidth of the transmission band of the pilot channel assigned by the pilot channel transmission band assignment unit and a bandwidth of the transmission band of the data channel assigned by the data channel transmission band assignment unit; and a signaling unit configured to transmit the control signal generated by the control information generation unit to the mobile stations, wherein the data channel transmission band assignment unit assigns the transmission band of the data channel based on reception quality of a reception channel state measuring pilot channel transmitted in the transmission band of the pilot channel assigned by the pilot channel transmission band assignment unit.