A new optimal approach for improving energy efficiency in wireless ad-hoc networks

Mobile ad hoc network is coordinated without fixed infrastructure. In the conservative AODV routing protocol, source node always forwards RREQ (Route Request) packet to neighbour for finding path to the destination node. The intermediary (neighbour) node having less lifetime or energy, as well forwards RREQ and lifetime expires after some certain time, i.e. node goes down; it cannot forward RREP (Route Reply) on reverse path and source node has to regenerate RREQ that results in needless RREQ rebroadcast, less packet delivery ratio, throughput and more end to end delay. The solution of the above problem, here we propose energy optimal AODV (EOAODV) routing protocol based on reactive routing protocol. In this proposed approach, source node does not send any RREQ; no enough energy (battery life time) and received RREP until the node density in its neighboring exceeds a particular threshold. The performance of the proposed protocol has been examined and evaluated with NS-2.29 simulator for various statistics using these parameters, when applying routing discovery and needs to avoid the unnecessary information sending efficiently. Finally we concluded that the proposed protocol i.e. EOAODV improves network throughput, energy efficiency and network lifetime as well about minimize delay. The new protocol is much better than all existing routing protocols in terms of battery lifetime and throughput.