Layer-Cluster Topology Sensor Node Deployment for Large-Scale Multi-Nodes of WSN

Abstract

In the process of data collection for wireless sensor networks based on large-area multiple nodes, the utilization rate and energy efficiency of existing methods of nodes deployed in the network are relatively low. Therefore we propose hybrid layer-cluster topology method for large multi-node deployment in wireless sensor network in this paper. Data acquisition for each region is assigned to each cluster which is composed of cluster head node and ordinary nodes divided by the hexagon deployment strategy. Star-structure network is adopted between ordinary nodes and cluster head node, each cluster is connected by mesh-structure network. On this basis, the hybrid hop routing method is used to communicate with base station based on critical distance, which saves the cost and improves the efficiency of the network perception. The experimental results show that the layer cluster hybrid topology model based on hexagon partition can reach the coverage rate of 100 % with the energy utilization rate increasing by 5.4 and 8.6 % on the condition of relatively few deployed sensor nodes, compared to quadrilateral partition and random deployment model. This method overcomes the disproportion of the energy consumption and improves the information redundancy in the process of transmission, and can cover the maximum working area along with the longest survival time of the network by reducing energy consumption. This method is an effective solution to the problem of node deployment of large-scale sensor nodes in wireless sensor networks.