Research Of Delamination Routing Protocol Based On Energy-Restrained For Wireless Sensor Networks

With the rapid development of the wireless sensor network(WSN),a series of new applications have come into being,because of which challenges in designing appear.The characters of its flexibility and Self-organization put solid foundation for its vast application backgrounds.Because the nodes in WSN are powered by batteries, which have limited power enemy,the techniques of making good use of the enerav is one of its focuses in desianina and applications.WSN have much differences from the traditional network communication technology,and one of the essential problem is the energy consumption of sensor nodes.The number of sensor nodes in WSN numerous and single node is extraordinarily limited inresource,so the important aim of designing routing protocol of WSN is to reduce the overall energy-dissipated in the networks and to maximize the networks lifetime.Lowering the energy consumption of sensor nodes must be realized on each layer in protocol stack,and this article concentrate on the WSN routing protocol.At first,this paper studied the framework of WSN,the network protocol structure and the characteristics of different classifications in WSN;and then,after analyzing and comparing the classic routing protocol directed to the wireless sensor network.This article designed the energy efficience routing algorithm NDMC based on these idea.This paper proposes a Node Density-Based Multi-hop Clustering Routing Protocol.This routing protocol have the following features:the choice of periodic cluster head nodes,the first cluster node and the cluster nodes meet the principle of minimum average distance,when cluster stability,this protocol run within the cluster single-hop communications,inter-cluster single-hop communications and multi-hop combination to extend the network lifetime.At last this paper analyzed the probability of cluster head and improved the optimum number of clusters.In this paper,"round" of LEACH protocol is still used in NDMC.There are two phases including the initialization phase and stability phase.Initialization phase,the cluster head was elected by the numbers of cluster head and the numbers of node in a cluster.The member nodes join the cluster based on signal strength and tell their cluster head.Finally,this paper simulat NDMC and the classic protocols LEACH using NS2. The simulation results show that this thesis have higher energy efficiency and extend the network lifetime Effectively.This paper is supported by the National Natural Science Foundation of China(No. 60672137,60773211),Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20060497015),NSF of Hubei Province(No.2007AA 101C63),New Century Excellent Talents in university(No.NCET-08-0806)...