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Information Technology Journal
Year: 2013  |  Volume: 12  |  Issue: 7  |  Page No.: 1279 - 1288

Performance Evaluation of Proactive and Reactive Protocols Under a Large Scale and Highly Dynamic MANETs

P. Srimanchari, M. Saroja and M. Venkatachalam    

Abstract: Mobile Ad Hoc Network (MANET) is a temporary association of mobile nodes. It forms the network on the fly over wireless links using multi-hop communication in the absence of pre-established infrastructure. Recently, there is a rapid growth in the mobile computing field owing to the proliferation of a large number of widely available wireless devices. This paves a way for numerous mobile nodes with highly dynamic mobility patterns. Frequently changing topology in a large network with highly dynamic mobility leads to high overhead, and consume more resources. It ultimately has a great impact on the routing performance. The standard protocols cannot be able to provide efficient routing under a large network and high mobility. This offers new challenges in designing an efficient routing. Performance evaluations reveal that there is no realistic routing protocol under large network size and dynamic mobility pattern. This study compares the scalability and mobility properties of core protocols such as AODV and DSDV under the MANET environment. The performance of these routing protocols is analyzed under large network size and dynamic mobility in the aspects of packet delivery ratio, control overhead, latency and throughput. The NS2 based simulation result reveals that AODV and DSDV are suitable for small and low mobility MANETs and are not efficient under the scalable and the highly dynamic mobile environment. These results motivate the need for a new routing protocol that provides efficient routing under a large scale and dynamic network conditions for the future.

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