Enhancing the Lifetime of Wireless Sensor Network Using P-leach Protocol

Wireless sensor network (WSN) consists of tiny sensor nodes with sensing, computation and wireless communication capabilities. Now a day, it is finding wide applicability and increasing deployment, as it enables reliable monitoring and analysis of environment. Recent advances in wireless sensor networks have led to many new protocols specifically designed for sensor networks where energy awareness is an essential consideration. The design of routing protocols for WSN is influenced by many challenging factors like fault tolerance, energy efficiency, scalability, latency, power consumption and network topology. The main requirement of a wireless sensor network is to prolong network energy efficiency and lifetime. This paper deals with these two factors. Researchers have developed protocols Low Energy Adaptive Clustering Hierarchy (LEACH) and Power-Efficient Gathering in Sensor Information Systems (PEGASIS) for reducing energy consumption in the network. LEACH features the dynamicity but has limitations due to its cluster-based architecture. PEGASIS overcomes the limitations of LEACH but lacks dynamicity. We introduce PEGASIS-LEACH (P-LEACH), a near optimal cluster-based chain protocol that is an improvement over PEGASIS and LEACH both. This P-LEACH performs better than LEACH and PEGAIS in terms of energy consumption, number of dead nodes and lifetime of the network. MATLAB is used for evaluating the performance of the protocol.