PERFORMANCE EVALUATION OF ROUTING PROTOCOLS IN MOBILE AD-HOC NETWORKS (MANET)
Mobile Ad-hoc Network (MANET) is an automobile wireless network and a collection of nodes that has no fixed infrastructure and can be rapidly deployed in any environment like military applications, emergence response, virtual classrooms, and some other applications. Nodes in MANET can organize themselves autonomously and are free to move in any direction. Hence, the topology of this network is changing frequently and dynamically. Because of this, routing in MANET is a lot more difficult than routing in a fixed wired network. Routing protocols in MANET are classified into proactive, reactive and hybrid routing protocols. In reactive protocols, a route is established only when needed while the route in proactive protocols is available immediately. Both proactive and reactive approaches have their own limitations, for example, the proactive protocols use excess bandwidth in maintaining the routing information while, the reactive ones have long route request delay. The new generation of protocols have a nature that is reactive and proactive, and are known as hybrid routing protocols. The goal of this paper is performance evaluation of Ad hoc On-demand Distance Vector (AODV) and Dynamic Source Routing (DSR) routing protocols, using NS2 Simulator. We applied two performance metrics, average throughput and average end-to-end delay, based on packet size and speed of the nodes. The final analysis with realistic outcomes shows that AODV has better performance than DSR in terms of throughput whereas DSR is better for the low average end-to-end delay.
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