A reliable clustering algorithm base on LEACH protocol in wireless mobile sensor networks

Wireless sensor network which is composed of a large number of low-cost, low-power, multifunctional sensor nodes deployed in a remote environment to monitor and analyze the data collected in the physical world in a timely manner. Based on the feature of nodes with limited energy, people have done some deep research on the prolongation of the lifetime in the WSN. In this paper, we focus on reducing energy load among all the nodes and present an improved algorithm LEACH-D based on LEACH. The algorithm combines the ideas of adjusting the threshold function about the nodes, a fixed radius of the clustering and a multi-hop communication mechanism among the cluster heads to achieve advanced in terms of system lifetime energy load among all the nodes. Simulation results show that the new strategy of cluster-heads election can improve the network´s lifetime effectively.