Modified Leach-c Protocol for Cluster Based Routing in Energy Efficient Wireless Sensor Networks

Energy is the main constraint in wireless sensor network. Hence to increase the lifetime of WSN, the requirement is to have an energy efficient routing protocol .For this purpose the hierarchical routing architecture is used wherein the whole network is divided into group of clusters and only cluster head is responsible for forwarding the data to base station directly. In hierarchical based architecture routing, cluster head is used to aggregate the data from other nodes and send the aggregated data to base station. Cluster head is chosen by the nodes of cluster according to the energy of node and the number of nodes in cluster. This paper presents the modified Leach-C protocol in which cluster head is chosen among the nodes, having energy more than the threshold level.