Patent ID: 8428613

Claim:
A base station device performing wireless communications with a mobile station by use of a plurality of communication channels and a pilot channel corresponding to at least one of the plurality of communication channels, the base station device comprising: a transmitting unit to set at least one of the plurality of communication channels as a priority channel to be used preferentially in the wireless communications by the base station and to transmit identifying information for distinguishing between the priority channel and the other channels and a predetermined correction value which is to be subtracted from reception level corresponding to the other channels in the mobile station so as to calculate reception levels corresponding to the other channels in the mobile station, to the mobile station by use of the communication channel other than the pilot channel; a receiving unit to receive downlink channel information indicating at least one available communication channel as a downlink communication channel determined by the mobile station based on the reception level corresponding to the priority channel and the other channels in the mobile station and the predetermined correction value; and a selecting unit to select at least one communication channel as the downlink communication channel used for transmitting data addressed to the mobile station in the plurality of communication channels based on the downlink channel information from the mobile station.