Tan, G., Jarvis, Stephen A. and Kermarrec, A. M. (2008) Connectivity-Guaranteed and Obstacle-Adaptive Deployment Schemes for Mobile Sensor Networks. In: 28th IEEE International Conference on Distributed Computing Systems (ICDCS 2008), Beijing, China. Published in: IEEE Transactions on Mobile Computing, 8 (6). pp. 836-848.

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Abstract

Mobile sensors can relocate and self-deploy into a network. While focusing on the problems of coverage, existing deployment schemes largely over-simplify the conditions for network connectivity: they either assume that the communication range is large enough for sensors in geometric neighborhoods to obtain location information through local communication, or they assume a dense network that remains connected. In addition, an obstacle-free field or full knowledge of the field layout is often assumed. We present new schemes that are not governed by these assumptions, and thus adapt to a wider range of application scenarios. The schemes are designed to maximize sensing coverage and also guarantee connectivity for a network with arbitrary sensor communication/sensing ranges or node densities, at the cost of a small moving distance. The schemes do not need any knowledge of the field layout, which can be irregular and have obstacles/holes of arbitrary shape. Our first scheme is an enhanced form of the traditional virtual-force-based method, which we term the Connectivity-Preserved Virtual Force (CPVF) scheme. We show that the localized communication, which is the very reason for its simplicity, results in poor coverage in certain cases. We then describe a Floor-based scheme which overcomes the difficulties of CPVF and, as a result, significantly outperforms it and other state-of-the-art approaches. Throughout the paper our conclusions are corroborated by the results from extensive simulations.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QA Mathematics > QA75 (Please use QA76 Electronic Computers. Computer Science)
Divisions:	Faculty of Science > Computer Science
Journal or Publication Title:	IEEE Transactions on Mobile Computing
Publisher:	IEEE
ISSN:	1536-1233
Date:	June 2008
Volume:	8
Number:	6
Page Range:	pp. 836-848
Identification Number:	10.1109/TMC.2009.31
Status:	Peer Reviewed
Publication Status:	Published
Conference Paper Type:	Paper
Title of Event:	28th IEEE International Conference on Distributed Computing Systems (ICDCS 2008)
Type of Event:	Conference
Location of Event:	Beijing, China
Related URLs:	Other Repository
URI:	http://wrap.warwick.ac.uk/id/eprint/47635

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