Research On Mobile Routing Protocol In Wireless Sensor Networks

The application of wireless sensor networks in the mobile environment is used more and morewidely, but the static network routing protocols can not be fully applied to the mobile environment.Mobile nodes in wireless sensor network are likely to cause interruption of routing protocols, datalatency and increase energy consumption of network; as a result, routing protocols for mobilitybecome the current hot topic of wireless sensor networks. In order to take the advantages of thenetwork structure, reduce energy consumption and increase the data transmission, this paperstudies in the following areas:1, The Energy-efficient cluster-based mobile routing protocol in non-uniform network isproposed for the LEACH shortcomings. By studying the mobility of node in non-uniform wirelesssensor network, comprehensive analysis of the size of the speed, the moving direction, theremaining energy and the positional relationship in process of choosing cluster-heads and inter-cluster building, the threshold formula, communication cost function and secondary clusteringmechanisms are proposed to support mobility. At the same time, taking into account the cluster-heads’ movement and energy consumption in the process of data transmission, mechanism ofcluster-heads replacement is proposed to effectively avoid the destruction of cluster and node"premature death" phenomenon, and maintain data transmission.2, Head multi-hop mobile routing protocol in uniform network is proposed based on researchand analysis of the node mobility and multi-hop routing protocol in the uniform wireless sensornetwork, cluster. The algorithm combines the structural characteristics of the uniform network withmobility factors to improve the shortcomings of the existing routing protocol to effectively reducethe energy consumption of the network. At the same time, use node mobility and positionalrelationship to design weight formula of multi-hop path and propose multi-hop path reversealgorithm. The algorithm makes cluster head in the local area to find the next hop node in eachround, so the efficiency of the algorithm is improved.3, Cluster-based routing protocol for mobility are proposed based on ring from "hot zone" andcoverage in large-scale mobile sensor networks. Based on the structural characteristics of the ring,algorithm take the uniformity of node mobility and energy consumption of each ring to determinethe cluster number of each ring, by increasing the inner loop average area of the number of cluster heads, to balance the energy consumption of cluster heads caused by transmission outer ring dataas relay node. Each ring evenly is divided based on the number of cluster heads, to achieve a kindof network evenly covered by the cluster-heads, meanwhile use cluster heads multi-hopmechanism based on ring for data transmission to ensure the security of multi-hop transmission.In this paper, based on clustering technology, three mobile routing protocols are simulatedand analyzed. Results show that mobile routing algorithm can effectively reduce energyconsumption, delay the node premature death, and extend the network life cycle.