Intra-Cluster Optimization In Zone-Based Wireless Sensor Networks Using DBSCAN

摘要

Effective energy utilization of nodes within the clusters is the most important issue in zone or partition based Wireless Sensor Networks. Even though the clustering mechanism achieves high scalability and efficient resource allocation, it increases energy consumption in clusters of bigger sizes. In order to achieve balanced energy consumption in all the nodes, the role of Cluster Head is rotated periodically among the nodes over the time. But this will not help us to achieve balanced energy consumption in nodes that are within the rectangular based zones of larger clusters and uneven in size. Those nodes require more energy for data transmission to the cluster head and may not follow the optimal path to the base station. In this paper, we analyze the intra-cluster communication costs in zone based network and apply DBSCAN algorithm for the cluster set up phase with the objective of minimizing the intra-cluster distance and optimizing the energy consumption of the network. Simulation results reveal that the proposed approach yields increased network lifetime, throughput and energy utilization than the existing protocol.