Modified AODV Energy Aware Routing for Optimized Performance in Mobile Ad-hoc Networks

Mobile Ad hoc Network (MANET) is a temporary infrastructure less network formed by collection of wireless mobile nodes. Every node is mobile to communicate with each other without relying on any centralized system. As the power of mobile node is limited it is during communication nodes will keep on losing its energy and finally drain off when the energy becomes zero. Thus, it is very essential to consider the nodal energy of each individual node before forwarding a Route Request packet. There are many protocols defined in order to discover route between a pair of nodes out of which the performance of Ad hoc On-Demand Distance Vector protocol (AODV) Routing Protocol proves to be better. However AODV and none of the existing protocols have considered node energy threshold to make a forwarding decision and considered routing based on node residual energy. This paper proposes an Energy Aware Routing Protocol (AODVEA) based on AODV which incorporates local forwarding decision with node energy threshold for intermediate nodes and routing based on max min energy algorithm to increase the lifetime of the network. Also project proposes Modified AODV (AODVM) which incorporates same local forwarding decision for intermediate nodes but routing is based on combination of max min energy algorithm and shortest distance. By using NS2 (Version 2.35) simulator simulation of new protocols and AODV protocol for the performance parameters network lifetime, average throughput and average delay are performed for various scenarios. Results show that AODV modified gives optimized performance.