Social Network-based Data Dissemination in Vehicular Sensor Networks to Support Distributed Monitoring Services

车辆和传感器网络的融合为分布式服务提供了可行的数据传播手段，如交通监控、安全警告、信息娱乐和道路和街道的主动监控。然而，由于车辆的高机动性，车辆传感器网络（VSNs）的数据传播是一项具有挑战性的任务。网络拓扑变化频繁；数据量大；以及不同的数据传播和应用需求。例如，大多数安全警告应用程序需要将快速可靠的数据传输到附近的车辆，这可以通过本地广播实现。监测服务可能需要不断向某一区域或指挥中心提供数据，在这种情况下使用广播既不可行也不有效。因此，另一个挑战在于根据不同的车辆或用户的兴趣动态地适应最佳的数据传播方法。

The convergence of vehicle and sensor networks offers viable means for data dissemination to distributed services such as traffic monitoring, safety warnings, infotainment, and proactive surveillance of roads and streets. However, data dissemination in vehicular sensor networks (VSNs) is a challenging task due to high mobility of vehicles; frequent network topology changes; high volume of data; and different data dissemination and application requirements. For instance, most safety warning applications will require fast and reliable data delivery to nearby vehicles, which can be achieved by local broadcasts. A monitoring service may require continuous data delivery to a region or command centre, in which the use of broadcasts would not be feasible or efficient. Thus, another challenge lies in adapting on-the-fly to the best data dissemination approach depending on the different vehicle or user's interests.