Design of single and Multipath Routing Protocol for quality of service (QoS) in VANET

Most of the concerns of interest to mobile ad hoc networks (MANETs) are of interest in vehicular ad hoc networks (VANETs), but the details differ. Rather than moving at random, vehicles tend to move in an organized path. The intercommunication with roadside equipment can likewise be characterized fairly accurately. And finally, most vehicles are prohibited in their range of motion, for example by being forced to follow a smooth highway. Various routing protocol are used in VANET named Dynamic Source Routing Protocol(DSR), Destination Sequence Distance Routing Protocol(DSDV), Ad-hoc On Demand Distance Vector (AODV), Ad-hoc On demand Multipath distance Vector(AOMDV).In this paper we design and compare the performance of routing protocol named AODV and AOMDV in different traffic pattern UDP and CBR.The performance metrics parameter under the consideration for designed networks are Packet delivery Ratio(PDR), Packet loss ratio(PLR) and Throughput. Performance comparison of AOMDV with AODV using ns-2 simulations shows that AOMDV is able to achieve a better improvement in the packet delivery ratio(PDR) increased up to 91%, packet loss ratio(PLR) reduced up to 9% and also is able to increase throughput up to 9 to 10mbps.