Vehicular communications are considered as a key factor to improve road safety and enhance urban mobility. The design and deployment of Vehicular Ad hoc Networks (VANETs) involve several decision criterias that lead the research into new challenging tasks to be solved. Routing mechanism is a fundamental component for the success of any vehicular application; the particular features of VANETs -a highly dynamic topology, links frequently disrupted and a fragmented network -require an efficient, robust and scalable routing strategy for each application. In this paper, we present a survey of routing protocols and we also provide a simulation testbed that will be used to assess the performance of the selected protocols.
Introduction: Car-to-X Communications are envisioned to improve road safety, traffic efficiency, and information services through short-range and real-time systems. The enabling applications have varied requirements such as low latency, specific forwarding patterns, and reliable data exchange between vehicles and infrastructure. Hence, a cross-layer architecture for vehicular applications should be defined according to the goals of the implementation, so as to consider proper routing and dissemination mechanisms, communication protocols, and the application’s design and operation. Methods: In this context, we propose the characterization of the upper layers of a safety-oriented Car-to-Car application
Recientes esfuerzos de investigación de la academia, la industria automotriz y el sector gubernamental de transporte señalan a los sistemas de transporte inteligente (STI) como la tecnología clave tanto en el mejoramiento de la seguridad en las carreteras, como en la eficiencia en el tráfico y el confort al conducir. Las redes vehiculares ad hoc (VANET) tienen un gran potencial para generar aplicaciones dirigidas a aumentar la seguridad en el tráfico. La interacción entre los vehículos y la infraestructura permite la comunicación en tiempo real, lo que a su vez permite proveer información a los conductores en situaciones peligrosas y evitar accidentes. Este artículo provee una visión general de las redes vehiculares Ad-hoc, describe sus conceptos fundamentales, los estándares de comunicación y las aplicaciones vehiculares, y presenta además, una evaluación de simuladores VANET.
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