Method and apparatus for switching the operating mode from the cognitive radio system

The present invention, the normal operation in the cognitive radio system (normal operation) mode and a co-operating (coexistence operation) mode, between switching the first operation method, to a method and apparatus to switch the operating mode from the cognitive radio system, a normal operation mode of at least the frame of the at least one channel selected above in the process and the co-operating mode for selecting one or more channels for the course and, when there is the above-occupied channels, the coexistence operation mode to occupy at least one channel in, use comprising the step of occupying the available frame and the normal operation in the cognitive radio system (normal operation) mode and a co-operating (coexistence operation) mode between switching the second operation method, a channel upon receiving the request, the process of confirming that the backup channel and, when there is the backup channel, and switch to the backup channel for the channel request, It includes a step of transmitting the accepted response. Cognitive radio, shared between frames (inter-frame sharing), co-existence.