Open architecture for internet-based C-ITS services

Efforts in Europe for the deployment of Cooperative Intelligent Transport Systems (C-ITS) have seen a substantial increase in recent years, with various large-scale initiatives having been launched. For these systems two main communication methods are available: short-range ad-hoc local network direct vehicular (and infrastructure) communication based on the IEEE 802.11p standard, and communication via the cellular network. Substantial standardisation efforts have taken place for the first method, while cellular solutions for vehicular communication are still very fragmented. This paper presents a relevant features of an open, scalable and broker-centric architecture for connecting local systems using short-range communication to an infrastructure server, which uses an information broker. For the client side, a topic structure inside the broker facilitates an efficient method for geocasting. On top of this functionality, a combination of certification, web tokens and transport layer security is developed to ensure security. A link of the architecture to the relevant business models is made to demonstrate that the two are compatible.