Patent ID: 7619998

Claim:
A radio station, comprising: a control signal reception unit configured to receive a control signal, broadcast from a radio control station, for communication connection with the radio control station; a reception level measuring unit configured to measure a reception level of the control signal broadcast from the radio control station, at the radio station; a relay controlling unit configured to receive a relay control signal to which a reception level of the control signal at an other radio station is added, the relay control signal being transmitted from a source radio station to the radio control station so as to set a communication route from the source radio station to the radio control station via at least one radio station; and an information signal transmission/reception unit configured to relay an information signal, which is different from the control signal, to an other radio station according to the communication route in which the relay control signal is relayed, wherein when the reception level added to the relay control signal is smaller than the reception level at the radio station, the relay controlling unit adds the reception level at the radio station to the received relay control signal, and relays the relay control signal, to which the reception level at the radio station is added, to other neighboring radio stations; when the radio station is a source of the information signal, the information signal transmission/reception unit transmits the information signal according to the communication route notified by a response relay control signal which is transmitted by a direct radio station capable of transmitting the information signal to the radio control station directly; and the response relay control signal is transmitted by the direct radio station in response to receiving the relay control signal at the direct radio station.