IMPROVISING RAODV ROUTING PROTOCOL FOR OVERCOMING THE LINK BREAK ISSUE IN MANET

In mobile ad hoc networks, there is no centralized infrastructure to monitor or allocate the resources used by the mobile nodes. The absence of any central coordinator makes the routing a complex one compared to cellular or wired networks. Here in MANET medium of communication is air. The Ad hoc On Demand Distance Vector (AODV) routing protocol is designed for ad hoc mobile devices. AODV uses an on demand approach for finding routes. AODV and most of the on demand ad hoc routing protocols use single route reply along the reverse path. Due to rapid changes of topology the route reply may not arrive to the source node resulting in sending several route request messages and degrading the performance of the routing protocol. The extended AODV called Reverse Ad Hoc On Demand Distance Vector routing (R-AODV) protocol uses a reverse route discovery mechanism (R-RREQ) and performs well in terms of mobility when compared to AODV. Proposed Reverse Ad hoc On demand Distance Vector algorithm to reduce the link breakage scheme for mobile ad hoc networks. Proposed approach will reduce packet loss and finds optimized route by taking into consideration of received signal strength (RSS) parameter. The performance analysis and simulation will be carried out to evaluate network performance using network simulator NS-2 based on the quantitative basic parameters like Packet Delivery Ratio, throughput, end-to-end delay along with various traffic models and mobility scenarios.