Status of the dedicated short-range communications technology and applications : report to Congress.
Caitlin BettisworthMatthew BurtAlan ChachichRyan HarringtonJoshua HassolAnita KimKatie LamoureuxDawn LaFrance-LindenCynthia MaloneyD. PerlmanGary W. RitterSuzanne SloanEric Wallischeck
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DSRC is a Wi-Fi derivative technology developed to meet specialized needs for secure, low latency, wireless mobile data communications. DSRC has proven the ability to provide all of the critical attributes needed to support Connected Vehicle safety applications. This report provides an assessment of the status of DSRC technology and applications, including known and potential gaps; describes a recommended implementation path; and discusses opportunities to use commercially available communications for Connected Vehicle applications under specific circumstances. The assessment is predominantly derived from U.S Department of Transportation research, analysis, and deployment planning that has been performed in partnership with stakeholders and industry experts over the last decade.Keywords:
Dedicated short-range communications
Technology roadmap
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Wireless communications are extending into the vehicle domain offering value-added services to drivers and passengers. Up to now, cellular networks (CN) have been generally considered in such environment for monitoring solutions, following a vehicle to infrastructure (V2I) data flow. Inter-vehicle communications are, nevertheless, achieved using 802.11 technologies, through vehicular ad-hoc networks (VANETs), which have been applied in safety solutions over all. The current work, however, tries to make the reader aware of the potential of cellular networks not only in V2I, but also for infrastructure to vehicle (I2V) and vehicle to vehicle (V2V) communications. General questions about a CN-based vehicular network are reviewed, paying a special attention to performance issues, and considering VANET technology as a reference. Our results over a real prototype prove the feasibility of CN for lots of vehicular services, dealing with the latency obtained from V2I, I2V and V2V data transmissions.
Vehicle-to-vehicle
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One of the core technologies for communication system in ITS is the dedicated short range communication (DSRC) between roadside equipment (RSE) and onboard equipment (OBE). It becomes key technology in the deployment of ITS infrastructure. For evolution of ITS services, interactive communication is highly required. DSRC system provides an efficient communication means for transmitting and receiving information to moving vehicles. To support DSRC system, the communication infrastructure is needed. In this paper, we derived a methodology which is needed to select the proper communication system for some alternatives in our situation. By cost-effectiveness analysis and forecasting of some parameters such as demand of DSRC, RSE and OBE, the alternatives are assessed. Based on the analysis of the alternatives, one can choose an efficient communication system. For the covering abstract see IRRD E102946.
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In this paper, an integrated inter-vehicles wireless communications and positioning system supporting alternate positioning techniques is proposed to meet the requirements of safety applications of Cooperative Intelligent Transportation Systems (C-ITS). Recent advances have repeatedly demonstrated that road safety problems can be to a large extent addressed via a range of technologies including wireless communications and positioning in vehicular environments. The novel communication stack utilizing a dedicated frequency spectrum (e.g. at 5.9 GHz band), known as Dedicated Short-Range Communications (DSRC), has been particularly designed for Wireless Access in Vehicular Environments (WAVE) to support safety applications in highly dynamic environments. Global Navigation Satellite Systems (GNSS) is another essential enabler to support safety on rail and roads. Although current vehicle navigation systems such as single frequency Global Positioning System (GPS) receivers can provide route guidance with 5-10 meters (road-level) position accuracy, positioning systems utilized in C-ITS must provide position solutions with lane-level and even in-lane-level accuracies based on the requirements of safety applications. This article reviews the issues and technical approaches that are involved in designing a vehicular safety communications and positioning architecture; it also provides technological solutions to further improve vehicular safety by integrating the DSRC and GNSS-based positioning technologies.
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Dedicated short-range communications
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Provides an up-to-date, in-depth look at the current research, design, and implementation of cooperative vehicle safety communication protocols and technologyImproving traffic safety has been a top concern for transportation agencies around the world and the focus of heavy research and development efforts sponsored by both governments and private industries. Cooperative vehicle systemswhich use sensors and wireless technologies to reduce traffic accidentscan play a major role in making the world's roads safer.Vehicle Safety Communications: Protocols, Security, and Privacy describes fundamental issues in cooperative vehicle safety and recent advances in technologies for enabling cooperative vehicle safety. It gives an overview of traditional vehicle safety issues, the evolution of vehicle safety technologies, and the need for cooperative systems where vehicles work together to reduce the number of crashes or mitigate damage when crashes become unavoidable.Authored by two top industry professionals, the book:Summarizes the history and current status of 5.9 GHz Dedicated Short Range Communications (DSRC) technology and standardization, discussing key issues in applying DSRC to support cooperative vehicle safetyFeatures an in-depth overview of on-board equipment (OBE) and roadside equipment (RSE) by describing sample designs to illustrate the key issues and potential solutionsTakes on security and privacy protection requirements and challenges, including how to design privacy-preserving digital certificate management systems and how to evict misbehaving vehiclesIncludes coverage of vehicle-to-infrastructure (V2I) communications like intersection collision avoidance applications and vehicle-to-vehicle (V2V) communications like extended electronic brake lights and intersection movement assistVehicle Safety Communications is ideal for anyone working in the areas ofor studyingcooperative vehicle safety and vehicle communications.
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Recently, automotive safety applications with wireless communications have been the focus of worldwide research and development. DSRC (Direct Short Range Communications) in particular, with its low latency vehicle-to-vehicle connectivity, now appears to be a promising wireless technology for time-sensitive crash avoidance applications. IEEE 802 and other standards organizations are advancing international wireless standards, most prominent being IEEE 802.11 and 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution). IEEE 802.11 (a.k.a. Wi-Fi) based client and access point devices serve a variety of home, office and outdoor applications, which include the 802.11p based DSRC radio. Both 802.11 and LTE deployments are accelerating worldwide, bringing about volume pricing and fast advancing technological capabilities. In this paper, the authors first examine major automotive applications, including emerging applications, and then discuss wireless technologies and standards best suited to support these applications.
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Through enhanced safety features on automobiles, vehicle accidents are more survivable. Now the focus is on collision and accident avoidance. The development of the 5.9GHz Dedicated Short Range Communications (DSRC) solution is making steady progress due to the noble efforts of a consortium of RFID providers working in a public/private partnership with the USDOT. The challenge presented here is for greater awareness and acceptance of Infrared Communications as a field-proven and viable form of DSRC that is widely accepted internationally, but under utilized in the United States. Continuous Air-interface for Long & Medium range initiative (CALM) TC204 is an ISO standard for DSRC that includes cellular communications (ISO 21212-3 and 21213-3), radio frequency communications (ISO 21215-3 and 21216-3) and infrared communications (ISO 21214-3). All technologies at the physical layer of the CALM architecture are required to comply with the CALM architecture and therefore be compatible at the network interface layer.
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