Research On TEEN Routing Protocol In Cognitive Wireless Sensor Network

Based on the deep research of cognitive wireless sensor network,this paper applies TEEN routing protocol to network the cognitive wireless sensor network and the cluster head election method of TEEN routing protocol is optimized in cognitive wireless sensor network.In order to reduce the energy consumption of nodes and extend the network life cycle,this paper proposes use TEEN routing protocol to set up the cognitive wireless sensor network.Using the cross-layer design method of network layer and MAC layer,establish the authorized user activity model in MAC layer,so that the routing at network layer and the spectrum allocation at MAC layer can cooperate with each other.Join the spectrum detection module to cognitive nodes and add the available channel detection process to the beginning of each round in TEEN algorithm to adapt to the dynamic frequency environment.Improve the stability of the route.Simulation results show that,in the same network environment and parameter settings,TEEN routing protocol reduces the energy consumption of nodes and improves lifetime of the network compared to LEACH routing protocol.Based on the limitation of random cluster head election mechanism of TEEN routing protocol to cognitive wireless sensor network,this paper presents an optimization algorithm of TEEN routing protocol,uses the number of vacant channels as a weight in the probability of each node to become cluster head.A-TEEN ensures that cluster head can communicate with more nodes and reduces the waiting time of node data transmission,makes routing path become more stable and reliable.Simulation results show that A-TEEN further increases the energy efficiency,improves the network life cycle and enhances the stability of routing and spectrum compared to TEEN routing protocol.