Connectivity-guaranteed and obstacle-adaptive deployment schemes for mobile sensor networks
Tan, Guang, Jarvis, Stephen A., 1970- and Kermarrec, Anne-Marie. (2009) Connectivity-guaranteed and obstacle-adaptive deployment schemes for mobile sensor networks. IEEE Transactions on Mobile Computing, Vol.8 (No.6). pp. 836-848. ISSN 1536-1233Full text not available from this repository.
Official URL: http://dx.doi.org/10.1109/TMC.2009.31
Mobile sensors can relocate and self-deploy into a network. While focusing on the problems of coverage, existing deployment schemes largely oversimplify 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:||Journal Article|
|Subjects:||Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||Faculty of Science > Computer Science
Faculty of Science > Centre for Scientific Computing
|Library of Congress Subject Headings (LCSH):||Sensor networks|
|Journal or Publication Title:||IEEE Transactions on Mobile Computing|
|Number of Pages:||13|
|Page Range:||pp. 836-848|
|Access rights to Published version:||Restricted or Subscription Access|
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