While home users can easily retrieve all kinds of contents onto their laptops or smartphones, vehicular users are constrained by intermittent connectivity to roadside units (RSUs). In this paper, we propose a cooperative downloading mechanism in homogeneous vehicular networks. In this mechanism, RSUs act as traffic managers to fetch proper data from the Internet and then distribute to vehicles in an approximately optimal manner. Specifically, based on vehicular mobility prediction and inter-node throughput estimation, a storage time aggregated graph (STAG) is constructed for planning transmission scheme, then an iterative greedy-driven algorithm is designed for deriving a suboptimal solution. Simulation results show that our approach can reduce 5% ∼ 20% downloading time in an uniform distributed deployment scenario where the spacing between RSUs is not greater than 1500m.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Cooperative Downloading in Vehicular Networks: A Graph-Based Approach


    Contributors:
    Sun, Yanglong (author) / Xu, Le (author) / Tang, Yuliang (author)


    Publication date :

    2018-06-01


    Size :

    355258 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Bus-based content downloading for Vehicular Ad Hoc Networks

    Wang, Zhe / Zhong, Zhangdui / Ni, Minming et al. | IEEE | 2015



    Content downloading in vehicular networks: Bringing parked cars into the picture

    Malandrino, F. / Casetti, C. / Chiasserini, C. F. et al. | IEEE | 2012


    The Role of Parked Cars in Content Downloading for Vehicular Networks

    MALANDRINO, FRANCESCO / CASETTI, CLAUDIO ETTORE / CHIASSERINI, Carla Fabiana et al. | BASE | 2014

    Free access