Fast Self-Expansion of Sensing Coverage in Autonomous Mobile Sensor Networks

Youn-Hee HAN  Heon-Jong LEE  Sung-Gi MIN  

IEICE TRANSACTIONS on Communications   Vol.E93-B   No.11   pp.3148-3151
Publication Date: 2010/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.3148
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network
sensor networks,  self-deployment algorithm,  

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Random scattering of sensors may cause some location not to be covered. In such a case, it is useful to make use of mobile sensors that can move to eliminate the coverage holes. Wang et al [1]. proposed self-deployment schemes of mobile sensors by using Voronoi polygon. However, some coverage holes still remain after the execution of the schemes. We propose a new self-deployment scheme using the centroid (geometric center) of each sensor's Voronoi polygon as the moving target position. The performance evaluation shows that the proposed scheme achieves better results than the existing schemes in terms of fast coverage expansion.