PERFORMANCE IMPROVEMENT OF ROUTING PROTOCOL FOR VEHICULAR MOBILE AD HOC NETWORKS USING NS3

Computer Science & Engineering

MANET routing protocols such as AODV, OLSR, DSDV and DSR are also supported. In this section present the AODV, OLSR, DSDV, DSR and Extended-GPSR (E-GPSR). Starting from these promises, it seems that with the current version of NS-3 it is possible working with VANETs by exploiting the wifi model with IEEE 802.11p extensions, traces defining the mobility of cars belonging to such network and choosing one of the four available MANET routing protocols. Because of the complexity and cost of practical evaluation of VANETs, researchers often rely on network simulations to evaluate their work. In this paper, we have developed a Network Simulator 3 (NS-3) based framework for VANET that analyzes network performance based on key performance indicators such as throughput, packet loss ratio, overhead, end-to-end delay, jitter, provides. Although the major challenge in VANET is to devise a more suitable routing protocol to efficiently route packets to their final destination, despite the high speed, frequent disconnections and highly variable topology of vehicles. This paper presents and analyzes the effect of vehicle density on the performance of the most well-known routing protocols. Quantitative metrics such as overhead, packet delivery ratio, average throughput and average end-to-end delay are evaluated using the network simulator NS-3 and SUMO. The comparison of a VANET routing protocol with the available routing pro- tools is not very righteous, the reason is that AODV, OLSR, DSDV and DSR routing protocols have been taken for MANETs, so might not have good performance using a VANET simulation. According of that it can be understood the needing of implement new routing algorithms for NS-3,which are able to perform VANET simulations.

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