Energy-Efficient Routing Protocol For Mobile Ad Hoc Networks

Adhoc on demand distance vector routing protocol(AODV) is specially designed for mobile adhoc networks with reduced overhead using Expanding Ring Search technique. But energy consumption should also be considered in MANET due to battery constrain of the nodes. In this paper, we choose an energy efficient route discovery process for AODV based on Expanding Ring Search(ERS). We want to saves energy of the nodes to avoide the redundant rebroadcasting of the route request packets. The relaying status of the node is decided based on the broadcasting of its RREQ packets by its neighbors. And it helps in reducing routing overhead incurred during the route discovery process. Simulations are performed to study the performance of Energy Efficient AODV (E2AODV) protocol using NS2, the Network Simulator. This E2AODV reduces energy consumption by 80-90% compared to AODV. It also reduces routing overhead of around 70-75% and there by reduces 65-70% collisions.