An Improved AODV Routing Protocol for High Moving VANET

Abstract

For the problems of the inefficient communication, increscent delay and raised packet loss rate etc. among the nodes caused by the frequent changes of topology in vehicular Ad hoc network (VANET), an improved solution of AODV (Ad hoc On-Demand Vector) routing protocol is proposed using the backup routing mechanism. By modifying the processing of nodes disposing route reply packet (RREP) packets, the source node maintains a routing to the destination node, at the same time it maintains a backup routing and modifies the local repair mechanism. The simulations analyze the performance of AODV routing protocol when the moving speeds of the nodes increase and the network structure changes frequently. The simulation results show that the packet delivery fraction (PDF) increases using the backup routing mechanism which improves the performance of AODV routing protocol.