An optimal path finding routing protocol for mobile Ad-Hoc network using random mobility model

In mobile Ad-Hoc network (MANET) routing is the issue for communication. Numbers of routing protocols are available for communication in MANET, but optimality is key issue in routing to improve the performance of MANET. As reactive protocol don´t preserve routing information at the network node level, if there is no communication between the nodes. Reactive protocol determines a route to a specific destination when a particular packet is intends to send. We proposed a reverse-reactive-routing based route discovery approach, which is used to find an optimal route to the destination with lower communication overhead than flooding based reverse route discovery mechanism. For optimal path, we proposed a three step based reverse reactive approach in our work and the steps are reverse route calculation in route request (RREQ), reverse route calculation in route reply (RREP) and reverse route calculation in route error (RERR). Experiments have been carried out using NS2 network simulator and result shows that reverse reactive routing protocol performance is better than reactive routing protocol (AODV).