An Improvised LEACH protocol with reduced data redundancy for wireless sensor networks

Abstract

WSN is a set of connected tiny devices (sensor nodes) with limited energy resource. WSNs have ability to extract the information from the harsh and hostile environment without human interaction. Once, WSN is deployed, it is impossible to recharge or replace the energy resource due to inaccessibility of nodes. So, network lifetime, energy efficiency and fault tolerance are critical parameters. To achieve the fault tolerance, redundancy has been created in terms of number of nodes. The nodes close to each other sends correlated (redundant) data to the base station. We propose
LEACH-RDR (Low Energy Adaptive Clustering Hierarchy-reduced data redundancy) protocol. It is improvised LEACH protocol. The key idea is to group two closest nodes (termed as neighbour nodes), allowing only one to transmit to the cluster head (CH) within the network. The proposed method is
useful when sensor nodes are deployed closer and density is high. Comparison with the classical LEACH shows that the proposed method improves the network lifetime and energy efficiency. The scheme reduces the redundant data to be sent from nodes to cluster head.