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Fault tolerance is one of the main issues in Wireless Sensor Networks (WSNs) since it becomes critical in real deployment environment where reliability and reduced inaccessibility times are important. In this paper, the authors propose a fault-tolerance technique for coverage area of the sensor network that enhances the energy efficiency by reducing the communication, with the help of Constrained Delaunay Triangulation intersect line. Further by applying the above approach, they reduce the energy consumption and congestion in the network. In last, they describe their approach with a case study that their approach is better in fault tolerance and energy saving.
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