A Cluster Head Routing Protocol for Improving Network Lifetime in Wireless Sensor Networks

Abstract

The energy efficiency in wireless sensor networks (WSNs) is a fundamental challenge.Cluster based routing is an energy saving method in this type of networks to reduce energy consumption in WSNs.A new Energy Efficient Cluster Head Routing protocol for heterogeneous WSN, which is called CHRP is proposed and evaluated which works on sleep-awake policy that helps in prolonging lifetime of the network.In CHRP, the cluster head is elected if its residual energy is more than system average energy of the network.Node pairing mechanism is also employed in CHRP.The nodes with high initial and residual energy will have more chances to become cluster head.Finally, the simulation results show that CHRP enhances lifetime of heterogeneous sensor network as compared to other protocols i.e., Distributed Energy Efficient Clustering (DEEC) and Threshold Sensitive Stable Electron Protocol (TSEP).