Intelligent transport systems (ITS) services, such as vehicle information and communication systems have already been implemented in practice and are now being applied commercially in a variety of fields. Amid these trends, the future progress of our vehicular society depends on further enhancing the ease-of-use of motor vehicles by providing Internet services to the people in the cars. The key to realizing these ends is the establishment of ITS mobile network capable of handling motor vehicles as mobile terminals. To provide the platform for the ITS mobile network, this system is based on the autonomous decentralized system architecture. To solve the communication issue, the authors developed a microcell mobility management to enable uninterrupted communication across microcells. This method is designed to assure a data transmission time by reducing the connection control processing time through broadcast-based efficient data transmission method and fast address assignment in the network. To obtain a higher throughput than a conventional mobile network, this system uses the DSRC method. To maximize the communication efficiency of DSRC, the authors developed a method to improve the transmission efficiency by data caching and handover method by avoiding packet losses due to disconnection of radio links to improve the end-to-end throughput. The authors developed a prototype incorporating the above methods and made an evaluation. The throughput was improved in the UDP or TCP file transfer that is used in a typical application. The evaluation proved that the throughput requirements for the ITS mobile network were satisfied, providing the way to the application of the autonomous decentralized architecture to it.


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    Title :

    Study of autonomous decentralized system based mobile communications platform for ITS services


    Additional title:

    Titel japanisch


    Contributors:
    Hiraiwa, M. (author) / Shimura, A. (author) / Aizono, T. (author)


    Publication date :

    2003


    Size :

    11 Seiten, 14 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    Japanese




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