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Tiene archivos: trueTema: Vanet (Vehicular AD-Hoc Network)

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  • Miniatura
    Ítem
    ICAR: Intersection-based connectivity aware routing in vehicular ad hoc networks
    (IEEE, 2013-06-09) Shen, Xuemin Sherman
    In this paper, we propose an intersection-based connectivity-aware routing protocol (iCAR) for vehicular ad hoc networks (VANETs) to enable infotainment and interactive applications, as well as multi-hop Internet access in urban environments. iCAR is a novel protocol that takes into consideration real-time vehicular traffic information and the experienced packet delivery delay per road, in order to improve the routing performance by dynamically selecting roads with a guaranteed connectivity and a reduced delivery delay. This is achieved by deploying a microscopic view of vehicles location to proactively estimate roads connectivity and the minimum link lifetime per road. Detailed analysis and simulation-based evaluations show that iCAR significantly improves the network performance in terms of packet delivery ratio and end-to-end delay with a negligible cost of communication overhead. © 2013 IEEE.
  • Miniatura
    Ítem
    Mobile ad-hoc routing protocols survey for the design of VANET applications
    (IEEE, 2012-08-30) Michoud, Roger
    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. © 2012 IEEE.
  • Miniatura
    Ítem
    Aplicaciones para redes VANET enfocada en la sostenibilidad ambiental, una revisión sistemática
    (Universidad Militar Nueva Granada, 2014-05-12) Llano Ramírez, Gonzalo
    High energy demand in productivity key sectors promotes a constant search for new ways to use non-renewable natural resources that contribute to improve sustainability and efficiency. Green Intelligent Transportation Systems (Green ITS) aim to improve mobility, reduce accident rates, and mitigate environmental impact through intelligent traffic management using Information and Communication Technologies (ICT). This paper presents a systematic review of Vehicular Ad hoc Networks (VANET), their features and approaches, as well as the classification of their applications; it also presents the mobility models used and a description of a modeling approach of the vehicular flow in the Colombian roadways. The paper concludes by showing current simulation trends and the future development of the research project.
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    Ítem
    Modelos de comportamiento de las redes vehiculares en sus escenarios más representativos utilizando simulación en la herramienta NCTUns
    (Universidad Icesi, 2010-01-01) Nieto de la Cruz, Carlos Felipe; Pachón de la Cruz, Alvaro; Asesor
    Este proyecto trata de una tecnología emergente como son las redes vehiculares, las cuales se constituyen en un tipo de redes que permiten establecer comunicación entre conductores y pasajeros de vehículo a vehículo o entre vehículo e infraestructura pero sin tener que implementar estructura adicional. Los principales objetivos de este tipo de redes son mejorar la seguridad en las vías y la eficiencia en el transporte generando mayor comodidad a los usuarios. La principal motivación de este trabajo es desarrollar un estudio acerca del estado del arte de las redes mencionadas y los desarrollos que se están alcanzando. Al mismo tiempo se hace un análisis de su funcionamiento a través de su simulación en la herramienta NCTUNs en donde se seleccionan algunos escenarios representativos. Las redes vehiculares o VANETs (Vehicular Ad Hoc Network) son redes en donde sus nodos son vehículos que se mueven de forma arbitraria y sobre las cuales se pueden implementar varias aplicaciones como por ejemplo: envío de mensajes de alerta de seguridad, aplicaciones de servicio público, entretenimiento y negocios, entre otras. Actualmente los entes reguladores están en proceso de estandarización de este tipo de redes para lo cual se ha diseñado el estándar IEEE 802.11p.
  • Miniatura
    Ítem
    OSA: A VANET application focused in energy efficiency
    (IEEE, 2014-06-04) Orozco, Oscar Arley
    With the growth in the number of vehicles moving through the streets, high vehicular flow has become a mobility and public health problem for governmental institutions and people since time of travel, gasoline consumption, and greenhouse gas [GHG] emissions have suffered an important increase. Hereby, policies and actions are required to reduce the impact of this increase. In this context, we have developed an application for the simulation of Vehicular Ad hoc Networks [VANET] using two software applications: SUMO and OMNeT++. The application we developed optimizes fuel usage and reduces GHG emissions; showing that vehicles following a preset speed (previously studied), gasoline consumption and GHG emissions present a considerable decrease compared to vehicles not running at that speed. © 2014 IEEE.