Method for opportunistic cognitive routing based on spectrum sensing

The invention relates to a method for opportunistic cognitive routing based on spectrum sensing, which comprises the steps of firstly building a route discovery model based on a DCSS spectrum sensingtheory, and building effectively routing which is accessible in space and communicated in frequency domain of a cognitive radio Ad hoc network by considering factors such as spectrum sensing, the linkavailability and the shortest path; secondly, putting forward a method for selecting a forward node of the next hop, the optimal channel and the optimal path so as to meet a routing stability targetof the cognitive radio Ad hoc network; and finally, providing relevant measurement mathematical closed expressions for evaluating the routing path quality, such as the link availability probability, the interruption probability, the routing access probability, the expected link delay and the end-to-end path average transmission delay, and providing relevant derivation proofs. The method effectively avoids a defect that a ma