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Cluster Head Selection Algorithm to Minimize Energy Consumption in Wireless Sensor Network

Abstract

To prolong the lifetime of Wireless Sensor Networks (WSNs), design of energy-efficient algorithms has become an important factor. Sensor nodes are limited strongly in terms of energy since their batteries cannot be usually recharged. Energy is consumed during sensing, data processing, and communication. Hence, there is a necessity for energy-conserving protocols for WSNs. In this paper, an improved version of LEACH protocol [1], is compared with LEACH protocol [2], with respect to the energy consumed by each of them. The improved version of LEACH protocol takes into consideration the residual energy at each node, distance between a node and the Base Station (BS) and the number of successive rounds in which a node has not been a CH, as parameters for threshold calculation [1] during CH selection. From simulation results, it is seen that the improved version of LEACH protocol [1] could minimize energy consumption and thus, lengthen network lifetime.

Meghashree Kamath, Nandini Maninarayana

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