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Modeling and Analysis of an Intelligent AODV Routing Protocol based on Route Request Retransmission Strategy in MANETs

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Author(s): Deepak Dembla | Dr. Yogesh Chaba

Journal: International Journal of Computer Applications
ISSN 0975-8887

Volume: 30;
Issue: 11;
Start page: 6;
Date: 2011;
Original page

Keywords: AODV | flooding | MANETs | GloMoSim | mobility | route discovery

ABSTRACT
A mobile ad hoc network MANET is comprised of mobile hosts that communicate with each other using wireless links and based on the peertopeer paradigm. A MANET is a selfconfiguring network that can have an arbitrary topology along the time. Each mobile host works as a router and it is free to move randomly and connect to other hosts arbitrarily. Thus, the network topology can change quickly and unpredictably since there may exist a large number of independent ad hoc connections. The default mechanism of route discovery in MANETs is flooding. Many routing protocols such as AODV and DSR and applications are operated based on flooding and data dissemination to all nodes in network. Therefore, a robust and efficient flooding algorithm is necessary in an ad hoc network environment. In this paper, an intelligent AODV protocol is proposed and analyzed that follows a efficient method of route discovery based on network density and probability, and adjusts itself dynamically based on the network density of MANET. The proposed algorithm is analyzed on GloMoSim simulator in various scenarios of mobility, network density, traffic load etc. The simulation results show that IAODV intelligentAODV method significantly reduces the no. of rebroadcasts and hence reduces the contention and collision rate among the neighbor nodes. The results show great improvements over simple flooding approach in AODV, in terms of performance measures such as routing overheads, collisions rate, end to end delay, no. of broadcast requests etc. hence solves the problem of broadcast storm in MANETs.
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