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The Scientific World Journal
Volume 2014, Article ID 790103, 11 pages
http://dx.doi.org/10.1155/2014/790103
Research Article

Mobility-Assisted on-Demand Routing Algorithm for MANETs in the Presence of Location Errors

School of Electrical Engineering, University of Ulsan, Ulsan 680-749, Republic of Korea

Received 7 March 2014; Accepted 30 April 2014; Published 18 May 2014

Academic Editor: Zhongmei Zhou

Copyright © 2014 Trung Kien Vu and Sungoh Kwon. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We propose a mobility-assisted on-demand routing algorithm for mobile ad hoc networks in the presence of location errors. Location awareness enables mobile nodes to predict their mobility and enhances routing performance by estimating link duration and selecting reliable routes. However, measured locations intrinsically include errors in measurement. Such errors degrade mobility prediction and have been ignored in previous work. To mitigate the impact of location errors on routing, we propose an on-demand routing algorithm taking into account location errors. To that end, we adopt the Kalman filter to estimate accurate locations and consider route confidence in discovering routes. Via simulations, we compare our algorithm and previous algorithms in various environments. Our proposed mobility prediction is robust to the location errors.