A Proposed Route Selection Technique in DSR Routing Protocol for MANET

This paper presents a novel technique for optimizing the efficiency of route discovery. The optimization aims to minimize the number of cached route request (RREQ), which is a significant source of overhead for the dynamic source routing (DSR) protocol. Our proposed technique is based on a decision algorithm that weighs individual links as a path to the necessary destination is being constructed if this link is deemed suitable by the fuzzy logic system it is added to the path and route construction continue. The fuzzy controller is used to instruct route construction continue as only good quality links are recorded in source destination paths. A productive decision using a fuzzy logic system is applied to the route discovery technique to curb non-optimal network floods. This action causes a cessation in the generation of low quality routes as only paths with good routing metrics are selected for the rebroadcast of route discovery packets. Consequently, route query packets arriving at the necessary destination node, or at some intermediate node with knowledge of the destination node, generate high quality route replies Performance results show that the propagated route request overhead can be reduced by more than 30% under high node mobility. Also, our proposed algorithm can significantly reduce the average end-to-end delay. Furthermore Simulation results show that the packet delivery ratio increases when proposed algorithm is used in comparison with the standard DSR routing protocol. Index Term-MANET, New routing protocol for MANET,