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A flat mobile ad hoc network has an inherent scalability limitation in terms of achievable network capacity. It is seen that when the network size increases, per node throughput of an ad hoc network rapidly decreases. This is due to the fact that in large scale networks, flat structure of networks results in long hop paths which are prone to breaks. The break is more of two reasons as break in route and power depletion. The long hop paths can be avoided by using backbone nodes concept working as mobile backbone network (BN). There are some specific backbone power capable nodes functionally more capable than ordinary nodes, and power concept can be used to provide stable routing. In this paper, a hybrid routing protocol for large scale networks with mobile backbone nodes and power factor has been proposed. Finally, the NS-2 network simulator has been used for the realistic simulation of the proposed protocol. The simulation results of the proposed routing protocol for networks of different sizes and mobility speeds show that proposed routing protocol performs better compared to other protocols.
Global Mobile Congress 2009
Date of Conference: 12-14 Oct. 2009