Patent ID: 8831520

Claim:
An information sharing method in cognitive radio communication, comprising: a detecting step of detecting an auxiliary control channel for sensing which is a common channel used among a plurality of radio communication devices, during a sensing period and before a communication link for the cognitive radio communication is established; an information sharing step of causing sensing information and sensing control information to be shared by the plurality of radio communication devices, using the auxiliary control channel for sensing detected in the detecting step; and a determining step of determining a pair of radio communication devices to perform data communications and frequency bands to perform the data communications by the pair of radio communication devices, based on the sensing information; wherein the plurality of radio communication devices include a spectrum sensor at performs spectrum sensing before the communication link is established, the information sharing method further comprises a sensing step of obtaining the sensing information in such a manner that the spectrum sensor performs the spectrum sensing, wherein the auxiliary control channel for sensing is detected by the spectrum sensing executed by the spectrum sensor, in the information sharing step, the spectrum sensor transmits the sensing information obtained by the sensing step to the other radio communication devices using the auxiliary control channel for sensing which is the common channel so that the sensing information is shared by the plurality of radio communication devices, and after the sensing period, the pair of radio communication devices that are determined in the determining step establish communication link using the frequency bands determined in the determining step.