V2X Technology
Via mobile communications
Vodafone is a technology supplier and responsible for the communication infrastructure in the mobile communication sector of the KoMoDNext project. Traffic information from vehicles is transmitted to the traffic control centers as well as traffic information from the control center to the test track. In concrete terms, Vodafone is currently expanding its high-performance mobile phone network, in which cars, infrastructure and other road users / test vehicles exchange information with each other.
C-V2X (Cellular V2X) is a mobile communication technology that enables the distribution of messages. A user / test vehicle receives messages, such as traffic light predictions, weather data or pedestrian warnings via various transmission paths, including the mobile phone network, if it is located in the relevant geographical area.
V2X Server
The V2X server has been standardized and described within the 3GPP V2X architecture. The V2X Server fulfills and supports different functions to enable C-V2X communication according to 5GAA. The following functions can be supported by a V2X Server:
- Integration of mobile broadcast
- Integration of GEOcast (geographical distribution)
- Connection of 3rd party applications (e.g. traffic centers, etc.)
- PC5 sidelink resource provisioning
Siemens Infrastructure
In the KoMoDnext project, Siemens communications infrastructure will be in use both in the urban network of the state capital Düsseldorf and on the motorway for Straßen.NRW (Regional Authority for Road Construction and Operation in North Rhine-Westphalia).
For the implementation of the use cases, Siemens Mobility will implement its latest platform for cooperative mobility ESCoS (Eco System Cooperative Systems) in Düsseldorf. On the one hand, this includes a cooperative central ESCoS CMS (Cooperative Management System), which as a component supplements the existing Siemens Mobility traffic computer Scala of the city of Düsseldorf.
On field level, ESCoS RSU (Road Side Units) will act as a link between test vehicles and infrastructure. All inner-city ESCoS RSU will enable the test vehicles to implement traffic light assistance with PKI secured transmission of SPAT/MAP. In addition, buses of Rheinbahn equipped with new Siemens on-board units will be given priority at the signalized intersections. In addition, the ESCoS RSU for the buses will enable intersection and stop assistance functions for the driver. For the public transport application, a new Siemens central solution for public transport will be used as a module to supplement the existing Siemens Mobility traffic computer Scala of the city of Düsseldorf.
Furthermore, a data connection of the RSU for the use case of predictive perception in Düsseldorf will be supported.
On the motorway between the Kaarst and Meerbusch junctions, 10 ESCoS RSU, together with the cooperative central ESCoS CMS in the control center in Leverkusen, will support the implementation of the research issues and use cases of Straßen.NRW. Here, mechanisms of cooperative traffic management in the motorway ecosystem as well as ESCoS RSU’s local logics for C2X use cases will be implemented.
