Research On Low Energy Consumption And Security Routing Protocol Of Wireless Sensor Network

With the development of wireless communications,electronics and sensor technology,wireless sensor network(WSN)has widely used in various fields.The node in wireless sensor networks has limited energy.WSN is an open,distribu ted and self-organizing network.Node is easy to death for running out of energy.The network topology is very vulnerable,eventually leading to insecurity of the entire network.The existing routing protocols about wireless sensor networks generally only consider energy consumption,or only consider security.That is to say the existing routing protocol is lack of the comprehensive consideration about energy consumption and safety aspects.How to prolong the life cycle of the wireless sensor networks and realize the securit y communication of the network,which has became a hot spot.In this paper,the main work is as follows :(1)Based on the limit of degree,this paper has put forward a routing protocol LECND,whose purpose is realize the low energy consumption,is divided into two parts,the stage of clusters and the stage of multiple-hops establishment.In the clusters stage,nodes only need the local information,according to the residual energy of nodes,the distance between nodes and base station node,and the previous degree of nodes to choose the cluster head nodes and form a cluster distribution.In the stage of multiple-hops establishment,cluster head nodes consider the energy of next-hop cluster nodes,the distance to the base station node of next-hop cluster nodes and the degree of next-hop cluster nodes.Through these two stages,the whole network topology has been built finally.LECND prolonged survival of the network n odes.(2)This paper has put forward a kind of security and low energy consumption protocol TLES,based on the LECND.TLES introduced the basis of trust management mechanism.In the stage of clusters,the trust value,which calculated by several trust factors,has been used.TLES can reduce the network energy consumption and improve the security of network effectively.In this paper,the LECND and TLES simulation experiment was performed.Simulation results show that LECND can reduce the network energy con sumption and prolong the network life time compared with the clustering routing protocols represented by LEACH effectively.TLES which based on the LECND has comprehensive consideration on the energy consumption and network security problems.The experimental results show that compared with other routing protocols,TLES can not only reduce the network energy consumption,but also can effectively eliminate the malicious nodes in network,leading to the security and rationality of node communication.