Patent ID: 8867429

Claim:
A wireless communication system comprising: a plurality of relay devices which are connected to one another via a communication line and to which unique relaying channels are respectively allocated; and a plurality of wireless terminal devices which communicate with each other via at least one of the plurality of relay devices, each relay device of the plurality of relay devices transmitting control information to each wireless terminal device which is registered in the corresponding relay device, and each wireless terminal device selecting, based on the control information received from the relay device which registers the corresponding wireless terminal device, a channel that is currently able to relay a communication among channels allocated to the respective relay devices to establish a communication between the wireless terminal devices, wherein a second relay device of the plurality of relay devices has information on the wireless terminal device registered in a first relay device of the plurality of relay devices beforehand, and the wireless terminal device registered in the first relay device has information on the second relay device beforehand, and further wherein when the first relay device becomes unable to transmit the control information, the second relay device transmits, instead of the first relay device, the control information to the wireless terminal device registered in the first relay device, and the wireless terminal device registered in the first relay device receives the control information from the second relay device.