Patent ID: 7349367

Claim:
A base station device for performing wireless communication with a mobile terminal device, comprising: first and second base stations, one of said first and second base stations operating as a master base station using one of a plurality of wireless channels as a control channel and using the other wireless channel(s) as an information channel(s), and the other of said first and second base stations operating as a slave base station receiving a control signal from said master base station for operation; and a signal line connecting said first and second base stations together for sending said control signal from said master base station to said slave base station, wherein each of said first and second base stations includes: a central control portion operating, when the corresponding first or second base station is operating as said master base station, to observe a state of an empty channel of said slave base station, use as said control channel the empty channel of the base station currently operating as said slave base station depending on the state of the empty channel of said slave base station, and make said control channel of the base station currently operating as the master base station available for use as the information channel.