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The Scientific World Journal
Volume 2014, Article ID 130793, 12 pages
Research Article

Fault Tolerant Mobile Sensor Node Traversal Schemes Based on Hexagonal Coverage

Department of Mathematical and Computational Sciences, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, India

Received 9 August 2013; Accepted 21 October 2013; Published 6 February 2014

Academic Editors: Z. Wu and S.-e. Yoo

Copyright © 2014 Ganala Santoshi and R. J. D’Souza. 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.


Mobile sensor nodes (MSNs) are equipped with locomotive can move around after having been deployed. They are equipped with limited energy. A large portion of energy is drained during the traversal. In order to extend the life time of a MSN, the traveling distance must be minimized. Region of interest (ROI) is covered with multiple MSNs using coverage based pattern movement. When a group of MSNs are deployed to cover a given ROI, all the deployed MSNs should travel an approximately equal distance. Otherwise, the MSN which travels longer distance depletes more energy compared to the MSN which travels a shorter distance. In this work we show that, ROI partition plays great role in hole free coverage and makes the MSNs have optimized movement cost with fault tolerant support.