Enhanced lifetime of heterogeneous wireless sensor network using stable election protocol with region-based energy-conscious sink movement

摘要

A new region-based energy-conscious sink movement (RESM) is presented to enhance the lifetime of the heterogeneous wireless sensor network using stable election protocol. The movement is based on the total energy of the individual regions of the entire sensing field. The sink always moves to the centre of the lowest nonzero energy region, which is the main contribution of this work. Based on the residual energy of the regions, RESM enhances the network lifetime. Simulation results prove that this approach prolongs the network lifetime as compared to other sink movement methods such as continuous movement in the periphery and the centre as well as other existing algorithms such as LEACH, SEP, and MSE. The lifetime improvement over LEACH, SEP, and MSE is 22%, 5%, and 3%, respectively.