UNIVERSITY of GLASGOW

Computing at Glasgow University
 
Paper ID: 9251

A Dynamic Probabilistic Route Discovery for Mobile Ad Hoc Networks
Abdulai,J. Ould-Khaoua,M. Mackenzie,L.M. Mohammed,A.

Publication Type: Journal
Appeared in: International Journal of Communication Networks and Distributed Systems, Volume 4(1)
Page Numbers : 108 - 130
Publisher: N/A
Year: 2010
ISBN/ISSN:

URL: This publication is available at this URL.

Abstract:

Blind flooding has been extensively used in ad hoc routing protocols for on-demand route discovery, where a mobile node blindly rebroadcasts received route request (RREQ) packets until a route to a particular destination is established. This can potentially lead to high channel contention, causing redundant retransmissions and thus, excessive packet collisions in the network. Such a phenomenon induces what is known as the broadcast storm problem, which has been shown to greatly increase the network communication overhead and end-to-end delay. In this paper, we show that the deleterious impact of such a problem can be considerably reduced if measures are taken during the dissemination of RREQ packets. We propose a generic probabilistic method for route discovery that dynamically computes the forwarding probability at a given node and can significantly reduce the overhead associated with the dissemination of RREQs. Our analysis reveals that equipping a routing protocol with the proposed probabilistic route discovery can result in a significant reduction of routing control overhead while achieving good throughput

Keywords: flooding; forwarding probability; mobile ad hoc networks;MANETs; reactive routing; routing overhead; simulation; broadcast storm


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