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Vehicular Ad-hoc network (VANET) is a self-organized ad hoc network, in which each vehicle, equipped with On Board Unit (OBU), participates in routing by forwarding data for other nodes. VANETs become a really hot topic and a challenging research field as it has several issues related to security, quality of service, routing protocols, etc. Although the big challenge in VANET is to design a routing protocols more suitable to route packets efficiently to their final destination, in spite of the high speed of vehicles, frequent disconnection and the highly changeable topology. This paper presents and analyses, the impact of vehicle density on the performance of the most well-known routing protocols. Quantitative metrics like overhead, packet delivery ratio, average throughput and average end to end delay are evaluated using the Network Simulator NS-3 and SUMO.
Bengag et al. (Mon,) studied this question.
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