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Testing V2Cloud Applications on a HIL Simulator

  • Validating V2Cloud applications under consideration of the entire chain of effects
  • Integrating a mobile radio network emulator for a realistic LTE test network on a HIL simulator
  • Manipulating throughput and latency of the radio link during a virtual test drive
  • Easy control of a mobile network connection from Simulink®
  • Ready for 5G

Even today, drivers can use their smartphones to locate their vehicles or easily navigate to the nearest free parking space. Smartphones often use V2Cloud applications for this purpose. These applications exchange the required data, such as the vehicle position, free parking spaces, etc., with Internet services via a mobile radio network, prepare the data, and make it available to the driver. The next generation of these applications will, for example, provide the vehicle with the latest software updates or up-to-date and accurate map data for autonomous driving in the shortest possible time. The applications will therefore be integrated more closely with the vehicle and place high demands on data throughput, latency, and reliability of the mobile radio interface, among others. It therefore makes sense to use HIL simulation for validating the entire chain of effects, from the function in the vehicle to realistic communication with the cloud service. However, connecting a HIL simulator to a mobile network can prove challenging: The device under test might not be approved for communication with a live network, certain test criteria such as high network load have to be met, high reproducibility might be required, or the desired mobile network simply may not be available on site. The dSPACE approach is to equip the HIL with a mobile radio network emulator that provides a realistic test network consisting of base stations (radio access network) and a mobile radio core network. The emulator can be connected directly to the Internet or a back-end server and exchanges data between the cloud service and the tested application in the vehicle. You can use wires or antennas to connect the emulator to the communication unit. In the latter case, the radio signals must be appropriately shielded.

You can control the mobile network emulator from the HIL simulator using a Simulink blockset. This lets you reconfigure the mobile network to manipulate data throughput and latency, for example, and also supports mobility scenarios such as a handover (changing from one cell site to another one). During a virtual test drive, the radio link is transferred from one base station to the next without losing the data link. Another frequent test case is path loss, where the radio signal becomes increasingly weaker or even breaks off completely during a drive. The blockset supports the Anritsu MD8475B Signaling Tester and is ready for use in a future 5G test setup.