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An interactive cluster-based MDS localization scheme for multimedia information in wireless sensor networks

Authors
Shon, MinhanJo, MinhoChoo, Hyunseung
Issue Date
1-9월-2012
Publisher
ELSEVIER
Keywords
Clustering; MDS; Localization; Range-free; WSN
Citation
COMPUTER COMMUNICATIONS, v.35, no.15, pp.1921 - 1929
Indexed
SCIE
SCOPUS
Journal Title
COMPUTER COMMUNICATIONS
Volume
35
Number
15
Start Page
1921
End Page
1929
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/107479
DOI
10.1016/j.comcom.2012.05.002
ISSN
0140-3664
Abstract
A wide range of applications used in wireless sensor networks requires location information of multimedia sensor nodes. In general, the topographical location information of data acquired by a sensor is applied for smart, interactive multimedia services. However, conventional techniques employ GPS or other location-tracking devices installed on sensor nodes and thus incur additional costs, making it impractical for wireless sensor networks. In contrast, some methods provide location information by node connectivity only. One of these methods, called multidimensional scaling - MAP (MDS-MAP), provides the most accurate positioning to date. However, MDS-MAP has a computational overhead of O(n(3)) in a network of n nodes and, in particular, results in significant localization accuracy error in environments with holes. Thus, this paper proposes a cluster-based MDS (CMDS) for range-free localization that overcomes the shortcomings of MDS and yields smaller accuracy error in all environments. Simulations demonstrate the proposed CMDS approach provides up to 23% improvement in localization accuracy compared to the newest version of conventional MDS-MAP, hierarchical MDS (HMDS) in a sensor network environment with holes. (C) 2012 Published by Elsevier B.V.
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