With the advent of Internet of Vehicles, overhead related to localization services and path discovery step can drain the network resources and overload the large-scale vehicular networks, thus slowing down the routing process, especially with the recent surge of time-sensitive and QoS (Quality of Service) greedy applications. Performing proactively these tasks contributes to reducing the associated overhead by exploiting the vehicular beaconing system, as related data can be piggybacked with beacon messages. In this context, we present ILTS, an Infrastructure Localization service and Tracking Scheme, designed to supply vehicles with contextual information about the infrastructure accessibility and the neighborhood, in order to track available paths and to forward promptly safety and non-safety-related information. Through extensive simulation experiments, we have proven the ability of ILTS to promptly supply vehicles with fresh information about the location of the infrastructure and the availability of paths to reach it. The obtained results show that the vehicles are able to maintain knowledge of full paths towards the infrastructure during an average of 90% of the time spent in an uncovered area.

随着车联网的出现，与本地化服务和路径发现步骤相关的开销可能会耗尽网络资源并使大型车载网络超载，从而减慢路由过程，特别是在最近时间敏感和QoS激增的情况下（服务质量）贪婪的应用程序。主动执行这些任务有助于通过利用车辆信标系统来减少相关的开销，因为可以用信标消息来承载相关数据。在这种情况下，我们提出了ILTS，一种基础设施本地化服务和跟踪方案，旨在为车辆提供有关基础设施可及性和邻里的上下文信息，以便跟踪可用路径并及时转发安全和非安全相关的信息。通过广泛的仿真实验，我们证明了ILTS能够及时为车辆提供有关基础设施位置和到达该设施的路径的最新信息的能力。所获得的结果表明，在未覆盖区域内平均花费90％的时间，车辆能够保持通向基础设施的完整路径的知识。