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Bandwidth-efficient techniques for information dissemination in urban vehicular networks

Many applications for vehicular networks, such as blocked road warnings or advertising, will require multi-hop dissemination of information to all vehicles in a region of interest. However, this type of communication can cause broadcast storms. Urban scenarios are especially sensitive to broadcast storms because of the high density of vehicles in downtown areas. They also present numerous crossroads and signal blocking due to buildings, that make dissemination more difficult than in open, almost straight interurban roadways. In this article, we study different ways to tackle a multi-hop broadcast of information in an urban area.