Patent ID: 7940869

Claim:
A radio communication system comprising: a terminal station including: a detection unit configured to detect a radar wave transmitted through a first frequency channel, the first frequency channel and a second frequency channel through which the radar wave fails to be transmitted being simultaneously utilized or one of the first frequency channel and the second frequency channel being utilized; a detection information generation unit configured to generate radar detection information including information indicating a detection time when the detection unit detects the radar wave, and information indicating the frequency channel through which the radar wave is transmitted; and a detection information transmission unit configured to transmit the radar detection information; and a base station including: a detection information receiving unit configured to receive the radar detection information; an occurrence information generation unit configured to generate radar occurrence information based on the received radar detection information, the radar occurrence information including information indicating an occurrence time when the radar wave occurs, information indicating a period of occurrence of the radar wave, and information indicating the frequency channel through which the radar wave is transmitted; and an occurrence information transmission unit configured to transmit the radar occurrence information; the terminal station further including: an occurrence information receiving unit configured to receive the radar occurrence information; and a communication unit configured to communicate with other terminal stations through the first frequency channel without using the base station when the radar wave fails to occur, based on the received radar occurrence information; wherein the detection information transmission unit transmits the radar detection information simultaneously using the first frequency channel and the second frequency channel, or using the second frequency channel.