An Optimized Route Discovery Technique for Reactive Routing Protocols in Mobile Ad-hoc Networks

In the recent era of wireless networks technology, the use of wireless transmission is not consistent as it deserves an extra cost of establishment, creation, and repair for non-mobile access points and stations. Thus, the mobile ad-hoc networks (MANETs) techniques are being employed because MANETs overcome all these disadvantages and also, they provide a better functionality in infrastructure-less environments. Practically, MANETs allow the mobile nodes to send and receive the data along with rapid changing network topology.

In order to support communication in MANETs, a route discovery approach is required to establish and maintain routes between mobile nodes. This paper proposes an approach for reactive routing protocols in MANETs, based on Dynamic Source Routing (DSR) protocol, called ORD. Basically, ORD utilizes an Optimized Route Discovery technique for discover and offer an efficient route for future use. Since, it aims to reduce the replied inefficient routes via intermediate nodes, which lead to increase packet delivery ratio, in addition to decrease the control overhead and the dropped data packets in MANET. Practically, ORD works to assist mobile nodes to give the superiority for source routes (SRs) that suggested by destination node rather than middle nodes. Since, ORD employed to reply an efficient source route for transmitting the intended data packets. Our simulation results based on simulations carried out using Global Mobile Network Simulator (GloMoSim) show that the proposed technique gives best performance as compared to the original DSR protocol in terms of packet delivery ratio, routing overhead, and number of dropped packets.