Energy Optimized Cluster Based Heterogeneous Routing Protocol for Wireless Sensor Network

Abstract

The technological advancements in sensing technology has made it possible to produce small sized sensors, which can monitor the surroundings and report at the base station through data transmission. The wireless nature of sensor network has proliferated the requirement for effective utilization of the battery of sensor node. It is due to the fact that once the battery of sensor node is exhausted, a node is said to be dead. Considering the prospect of energy conservation, an energy-optimized cluster based on heterogeneous routing (EOCHR) protocol is proposed. The selection of Cluster heads (CHs) in the clustering process adopted for routing among the sensor nodes is improved by introducing the node density along with energy and distance. The circular radius as defined in DRESEP and SEECP protocol is defined on the basis of the average distance of nodes from the sink. It reduces the energy consumption incurred by the far placed CHs. Simulation results show that the proposed EOCHR outperforms the DRESEP and SEECP protocol by enhancing the stability period by 31% and 166% respectively and the network lifetime by 440% and 158% respectively. It is highly suitable for large area networks due to dual hop communication in the network.