Efficient Data Dissemination in Urban VANETs: Parked Vehicles are Natural Infrastructures
Data dissemination is the fundamental operation in Vehicular Ad hoc NETworks (VANETs); for example, after an accident or congestion is detected by the corresponding sensors mounted on the vehicles, an alert message should be swiftly disseminated to the vehicles moving towards the affected areas. Motivated by the fact that there are large amounts of roadside parked vehicles in urban areas, this paper proposes a parking-based data dissemination scheme for VANETs. Data to be disseminated are buffered at the roadside parked vehicle, which continuously provides data dissemination services for the vehicles passing by. The authors analyze the challenging issues in achieving parking-based data dissemination and provide possible solution for each issue.