Improving the Invulnerability of Wireless Sensor Networks Against Cascading Failure
Wireless Sensor Networks consist of thousands of sensors to monitor the environment. The sensors nodes when operating in a harsh environment are prone to energy depletion, hardware failure and other attacks. If a sensor node fails, its load is transmitted to the neighboring node where the load increases making that node to fail which leads to the cascading failures in the sensor nodes. The invulnerability of WSN needed to be established . The invulnerability can be achieved in the network by using a threshold value. If the node’s value is below the threshold value then there is no chance for cascading failure to occur. If the node’s value is nearer to the threshold value then some preventive measures can be taken by reducing the network performance and the energy dissipation by selecting efficient cluster heads. If the node’s value goes completely beyond the threshold value then the performance of the network can be completely reduced and the nodes can be relocated using capacity expansion schemes.
KeywordsInvulnerability Cascading failure Sensor node Cluster head WSN
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