The present invention relates to a radio resource divided request method in a communication system using a cognitive radio, the base station If the blank is not actually detect the frequency band used by the new base station to be used to wake the same bandwidth while using the band displayed, to a message exchange scheme between the base stations for efficient allocation of resources. ; wireless resources division scheme is the request of the present invention receives a radio resource status information that is broadcast from the base station is the new base station already using the specific frequency band, the uplink sub-channels are defined for communication between the base station by adding it to the background and a resource allocation request using, resource negotiation messages exchanged between the two base stations using a defined channel is made makes it possible to efficiently allocate resources among base stations.
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