A – Leach Energy Efficient Routing Protocol for Wireless Sensor Networks

Abstract

The nodes in a wireless sensor network have limited energy and hence, lifetime maximization is the primary goal to write a new algorithm. Low Energy Adaptive Clustering  Hierarchy (LEACH) protocol is Clustering Protocol which uses a cluster heads for aggregation and relay of messages to base-station. The protocol Assisted LEACH (A-LEACH) achieves lessened and uniform distribution of dissipated energy by separating the tasks of Routing and Data Aggregation. It introduces the concept of Helper Nodes which assist Cluster Heads for Multi-hop Routing. A new algorithm has been formulated to facilitate energy efficient Multi-hop Route Setup for helper nodes to reach base station. The proposed protocol extends the lifetime of the network, minimizes overall energy dissipation in the network and distributes dissipation among Cluster Heads, Sensor Nodes and Helper Nodes is LEACH.