Modeling, Implementation and Performance investigation of Efficient-AODV Routing Protocol in MANET using Data Rate

In mobile ad hoc networks, there is no fixed infrastructure to observe or assign the resources used by the mobile nodes. The nonexistence of any essential controller makes the routing a versatile one compared to cellular networks. The Ad hoc On Demand Distance Vector (AODV) routing algorithm is a routing protocol intended for ad hoc mobile devices. Due to quick changes of network structure the route reply may not arrive to the source node resulting in sending numerous route request messages and decreasing the performance of the routing protocol. To defeat these all problems, an efficient AODV (E-AODV) routing protocol is proposed. In E-AODV the destination a node accepts first route request message (RREQ), it produces turn-around route request (TA-RREQ) message and floods it to neighbor nodes within communication range. When the source node receives very first TA-RREQ message, then it starts packet transmission, and late entered TA-RREQs are reserved for future use. It decreases route fail alteration messages and gets good performance in compare to existing AODV. Keyword: AODV, E-AODV, MANETs, NS-2, RREQ, RREP, TA-RREQ, RERR, pause time, mobility.