An Energy Efficient Routing Protocol based on Periodic Route Discovery for Mobile Ad Hoc Networks

In present energy efficient protocols for mobile ad hoc networks, once the route is selected in the route discovery phase, the selected route is used until all the data packets are sent out or until the selected route fails due to the exhaustion of node battery energy. Due to the continuous flow of the packets through a selected route, and if a node in that route having less battery energy, then that node will certainly die out causing route failure and this may also cause failure of other routes which are connected to it. The problem being the energy level at this node is consumed and hence may lead to failure. To reduce this problem, a mechanism of periodic route discovery is introduced. In this mechanism, the route discovery process is reinitialized periodically to increase the network lifetime. It is observed from our simulation results that the proposed mechanism named “PRD based MMBCR” performs better than the existing energy efficient protocols.