Vehicle ITS station for C2X communication

This paper suggests a new schema for combining functionalities from the Personal ITS station and Vehicle ITS station. In CoMoSeF -project we are simplifying the In Vehicle Domain architecture by fusing the Human-machine interface (HMI), as specified by ETSI, and the Application Unit into one Application Unit unit that is running on the smartphone. In the Smartphone-Centric Service Model the Application Unit and the HMI reside in a nomadic device and the connection to the Communication and Control Unit (CCU) is done utilizing WiFi. Both vehicle and roadside ITS stations communicate with other stations using standardized Distributed Environmental Notification Messages, DENMs. Those messages are received and sent via the CCU over IEEE802.11p. Messages are used to provide information about a specific driving environment, incident or some other traffic event to other stations. In CoMoSeF-project a basic In-vehicle signage (IVS) application implementation will be released. Also the Probe vehicle or road side unit (RSU) data use case can be easily implemented with this architecture. As an example of the implementation, we introduce a road weather measuring RSU station. The CoMoSeF vehicle ITS station provides a proof-of- concept of a Smartphone-centric service model, which is the first step forward to aftermarket V2X solutions during the transitional phase when VANET systems are not widely available yet.