Connectivity Restoration in Wireless Sensor Networks

Wireless sensor networks (WSNs) and services, especially those under hostile environments such as battlefield, are at greater risk because of failure of nodes. In Wireless Sensor Network (WSN), node failure is of significant concern. The node failure creates breakup in a network and leads to problems relating to the isolation of the affected node. It is important that the nodes are always live and communicate with uninterrupted network connectivity. The rapid detection of failure of node in the network is essential for inter-node communication. Recently, a number of methods for the restoration of inter nodes connections have been proposed. Replacing the node is one of the sustainable solution to address the issue. Another way is that a gateway node can take control of the functionalities of the affected node. Similarly, the residual energy available at each node can also be used to detect the faulty node in the wireless sensor network. In addition to this, the performance of the network should not degrade in case of any such failures for which right mechanisms have to be put in place as outlined in this research work. The usefulness of the proposed solution is authenticated by the results of the simulation. The performance was validated using experimental analysis and better performance was achieved. This research study