Improving lifetime of wireless sensor networks by mitigating correlated data using LEACH protocol

Abstract

WSN (Wireless sensor network) comprises of large number of tiny, inexpensive, computationally capable and energy constrained nodes that find use in various surveillance and monitoring applications. Data sensed by these nodes is transfused to the base station using various routing procedures. The pivotal issue in wireless sensor networks is of lifetime and energy conservation as the sensor nodes' energy source is often very arduous to replenish. To increase the lifetime of WSN we have proposed IL-LEACH (Improved Lifetime Low Energy Adaptive Clustering Hierarchy). Sensor nodes placed in vicinity sense correlated data which is sent to the cluster head. IL-LEACH aims to mitigating the correlated data transmissions by forming groups of nodes into virtual correlated cluster (VCC) and allowing only one node to send data. Simulation results in MATLAB demonstrate that proposed IL-LEACH increases the lifetime of sensor network by about 30.006% in comparison to the existing LEACH protocol.