Patent ID: 7865192

Claim:
A radio frequency selection device of a radio communication system for use in an environment in which plural radio communication systems are established in a same area, the radio frequency selection device having a second radio communication channel established in a second allocated frequency band of a second radio communication system, between a mobile station and a base station, the second allocated frequency band being different and nonoverlapping with respect to others of the plural radio communication systems, comprising: a frequency band determining unit configured to determine a second radio control channel frequency band, for transmitting control information based on the second allocated frequency band of the established second radio communication channel, from the plurality of different, nonoverlapping frequency bands available to the plural radio communication systems; and a radio control channel establishing unit configured to establish a second radio control channel within the second determined radio control channel frequency band, the second determined radio control channel frequency band being lower than and apart from in frequency, the second allocated frequency band of the established second radio communication channel, and the second determined radio control channel frequency band being in a first frequency band allocated to a first radio communication system lower than and apart from the established second radio communication channel of the second radio communication system.