Topology control scheme for fault tolerance in wireless sensor network

The Wireless Sensor Network (WSN) consists of numerous sensor nodes deployed randomly. These sensors are having tendency to fail, due to restricted battery life. The lifetime of sensor nodes has a greater dependency on its battery, as a result of failure of nodes the network lifetime will be reduced. In this paper, we propose a scheme for fault tolerance in wireless sensor networks by controlling the topology. The algorithm first detects the faulty node in the computed shortest path by considering the parameters mobility and buffer size. If the fault node is found, then the alternative shortest path excluding faulty node is identified for successful transfer of data. From the simulation results, it is observed that the more number of nodes will fail as there is increase in the mobility.

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