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Load Balanced and Link Break Prediction Routing Protocol for Mobile Ad Hoc Networks

—A Mobile Ad-hoc Network (MANET) is an infrastructure less and decentralized network which needs a robust routing protocol. With the development of the MANET applications, more importance is given to Quality of Service (QoS) routing strategy. However congestion and mobility of the nodes lead to frequent link failures and packet losses affecting the QoS performance of the protocol. We consider these issues and propose a Load balanced and Link Break Prediction Routing Protocol (LBALBP) for Mobile Ad hoc Networks. The protocol finds least loaded path based on path count metric. Link break prediction mechanism is also integrated in the route maintenance phase of the protocol. Based on the signal strength of the packets received from the neighbour, the node calculates the link break prediction time of the link and if the link is found to be broken soon, an alternate path is found before the link actually breaks. Simulation results show that the proposed protocol outperforms AODV in terms of packet delivery ratio, delay, throughput and no. of link breakages but at the cost of high routing overhead.