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

Abstract

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] pro posed 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 tar get position The performance evaluation shows that the proposed scheme achieves better results than the existing schemes in terms of fast coverage expansion