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A Reactive Location Service for Mobile Ad Hoc Networks

Author(s): Michael Käsemann, Holger Füßler, Hannes Hartenstein, Martin Mauve.
Title: A Reactive Location Service for Mobile Ad Hoc Networks
Published: TR-14-2002 , Department of Computer Science, University of Mannheim, November 2002
Keyword(s):
Abstract: We present and analyze a reactive location service RLS for mobile ad hoc networks. RLS provides a mobile node in a wireless ad-hoc network with the means to inquire the current geographical position of another node on-demand and can be used as a building block for location-based routing. We provide a comparison of RLS to an ideal omniscient location service as well as to the complex Grid Location Service (GLS). In addition, we compare the performance of greedy location-based routing in combination with RLS to the performance of a non-location-based ad hoc routing approach, namely Dynamic Source Routing (DSR). DSR was chosen for the comparison since RLS can be considered an adaptation of DSR's route discovery mechanisms to the location-based domain. We also introduce and study possible optimizations for RLS, in particular caching, random re-broadcast jitter, and re-broadcast suppression. The quantitative results of our NS-2 simulation study show a very good performance of RLS combined with greedy routing, outperforming GLS and DSR for scenarios with high mobility and high node density.
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