Vehicle manufacturers, highway concessionaries, governments and academic research are cooperating to find the best solution to add safety services relying on vehicle to vehicle communication systems (V2V) and among vehicles and the infrastructure (V2I) located on the roadside. Safety services, such as collision or sudden hard braking warning have delay-critical requirements. This paper proposes a WAVE (Wireless Access for Vehicular Environment) based model and a MAC (Medium Access Control) protocol to disseminate time-critical messages for safety services in highways where the Road Side Units (RSUs) are not present in the instant a safety event is generated and, consequently, the message dissemination is done only through vehicles. The model allows to determine the retransmission slot number and the model's feasibility is somewhat evaluated by analysing the maximum number of available slots for a typical scenario. The authors start by describing some current architecture proposals using several communication technologies in section 2. They then characterize some time-critical safety services in section 3. In section 4 they briefly introduce the WAVE standard. In section 5 the authors propose a solution for a WAVE based architecture and MAC protocol to deploy safety services using a slotted based approach where vehicles are responsible for message dissemination. Finally, in section 6 they discuss a particular scenario and they compute the maximum number of slots to allow proper safety message rebroadcast.


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    Title :

    WAVE based architecture for safety services deployment in vehicular networks


    Contributors:


    Publication date :

    2009


    Size :

    7 Seiten, 6 Bilder, 2 Tabellen, 14 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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