Simulation Modeling of Reactive Protocols for Adhoc Wireless Network

Ad hoc wireless networks are characterized by multihop wireless connectivity, infrastructureless environment and frequently changing topology. As the wireless links are highly error prone and can go down frequently due to mobility of nodes, therefore, stable routing is a very critical task due to highly dynamic environment in adhoc wireless networks. In this research paper, simulation modelling of prominent on-demand routing protocols has been done by presenting their functionality using NS2. An effort has been made to evaluate the performance of DSR and AODV on a self created scene using TCL for varying number of mobile nodes. The performance differential parameters analyzed are; packet delivery ratio and sent & received packets with varying speed and pause time. Subsequently, using results obtained after simulation, the recommendations have been made about the significance of either protocol in various situations. It has been observed that both DSR and AODV are good in performance in their own categories but the emphasis for stable and reliable routing is still on AODV as it performs better in denser environments.