Route maintenance and Scalability improvement of DSR, based on Relay node identification after locating Link-failure over MANET

In Dynamic Source Routing, each source determines the route to be used in transmitting its packets to destination. Route Discovery determines the optimum path for a transmission between a given source and destination. Route Maintenance ensures that the transmission path remains optimum and loop-free as network conditions change, even if this requires changing the route during a transmission. Many protocols were proposed to maintain route from high data loss and transition delay due to frequent link failure but doesn't take the decision on basis of location of failure link in source route and also doesn't take advantages of Relay node identification in partitioned source route. From this point of view in our paper we propose an algorithm with the help of local link repairing and improvement strategy based on the location of link failure inside source route over mobile ad- hoc network. Through this paper we introduce our proposed approach based on DSR, which takes decision on the basis of the location of Relay node(where link failure is detected) in source route.We think our new approach can be able to improve packet salvaging, packet delivery ratio and reducing end to end delay to improve the scalability of Mobile Ad-hoc network.