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In this paper, a hybrid communication paradigm for vehicular networking is presented in which connectivity is provided by both existing network infrastructure (e.g., wireless network access points) through a vehicle-to-infrastructure protocol and traditional vehicle-to-vehicle networking. Preexisting infrastructure can provide seamless connectivity, especially when vehicles are sparse or traveling in disconnected neighborhoods, while vehicular communications are available for dense traffic scenarios. In this vision, the authors depict a novel heterogeneous vehicular network scenario, in which overlapping wireless networks partially cover the vehicular grid.
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