Performance analysis of topology based routing in a VANET

Vehicular Ad Hoc Networks (VANET) is a variant of Mobile Ad Hoc Networks (MANET) in which communication nodes are mainly vehicles. VANETs are heterogeneous networks which provide wireless communication among vehicles and vehicle to Road Side Units (RSU). Now-a-days, it has become an interesting area of research as it is intended to improve Intelligent Transport System (ITS). To exploit effective communication among vehicles, routing is the key factor which needs to be investigated. This paper intends to analyze the performance of AODV routing protocol in a VANET in various scenarios under different traffic conditions with respect to Packet Delivery Ratio (PDR) and Average End-to-End Delay (E2ED). Simulation is performed using NS-2.35 in combination with VanetMobiSim. It has been found that AODV performs better in urban scenario than in highway scenario in terms of PDR and E2ED. It has also been found that the performance of AODV is improved by using IEEE 802.11p instead of IEEE 802.11.