16.06.22 | 1 Hier steht die Fußzeile 16.06.22 | 1 Hier steht die Fußzeile Testing distributed C2X systems with TTCN-3 Jürgen Großmann Fraunhofer FOKUS Kaiserin-Augusta-Allee 31 10589 Berlin Tel: +49-30-3463-7390 Email: [email protected]Ilja Radusch, Carsten Neumann, Andreas Hinnerichs (Fraunhofer FOKUS), Stephan Pietsch, Bogdan Stanca-Kaposta (Testing Technologies IST GmbH) TTCN-3 User Conference 2011 7 – 9 June 2011 - Bled, Slovenia
Testing distributed C2X systems with TTCN-3. Jürgen Großmann Fraunhofer FOKUS Kaiserin-Augusta-Allee 31 10589 Berlin Tel: +49-30-3463-7390 Email: [email protected] Ilja Radusch, Carsten Neumann, Andreas Hinnerichs (Fraunhofer FOKUS), - PowerPoint PPT Presentation
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22.04.23 | 1 Hier steht die Fußzeile22.04.23 | 1 Hier steht die Fußzeile
Testing distributed C2X systems with TTCN-3
Jürgen GroßmannFraunhofer FOKUSKaiserin-Augusta-Allee 3110589 BerlinTel: +49-30-3463-7390Email: [email protected]
Ilja Radusch, Carsten Neumann, Andreas Hinnerichs (Fraunhofer FOKUS), Stephan Pietsch, Bogdan Stanca-Kaposta (Testing Technologies IST GmbH)
TTCN-3 User Conference 20117 – 9 June 2011 - Bled, Slovenia
V2X Systems safety, efficiency, comfort
• Different communication technologies- WiFi 802.11 b / g, 802.11 p
The results presented here have been developed as part of the project simTD. The project simTD is funded by the Federal Ministries of
Economics and Technology (BMWi) and the Federal Ministries of Education and Research (BMBF) in Germany. The project is supported by the Federal
Ministry of Transport, Building and Urban Affairs.
Characteristics of 802.11p
• Unicast: data transport service from a single node (source) to just a single node (target) by communicating directly or via multiple hops to geographical addresses.
• Topologically-scoped broadcast (TSB): data transport service from a single node (source) to all nodes in an ad-hoc network.
• Single-Hop Broadcast (SHB): special situation of the topological broadcast. Messages are distributed to the immediate neighbours and not redirected by multi-hop communications.
• Geographically-scoped broadcast (GBC): data transport service from a single node (source) to node in a specific geographical area.
• Providing Test for several levels of integration (software integration, software / hardware integration, system integration)
• Support for various types of testing (functional testing, protocol testing, robustness testing)
• Independent of proprietary interfaces and vehicle manufacturer’s technologies (test shall run on systems that are used by different vehicle manufacturers)
• Distributed test development in over 20 development teams
• Analysis of complex data and protocols (e.g. complex C2X messages)
• Continuous stimulation with vehicle data (e.g. velocity, position etc.)
• Distributed system with heterogeneous components
•Vehicle is stopped and sends obstacle avoidance messages•Verification that the following vehicles receive the messages and display the warning
Testing distributed C2X applications – T3UC 2011
The test bed in the FOKUS automotive laboratory
22.04.23 | 9 Hier steht die Fußzeile
Architecture of the target hardware
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Application Unit (AU)Application Unit (AU)
VAPIClient
VAPIClient
LDMLDM
C2X ApplicationsC2X Applications
COM ClientCOM Client
HMI ControllerHMI Controller
Communication Unit (CCU)Communication Unit (CCU)
VAPI*VAPI*WirelessManager
WirelessManager
GPSGPS
Router APIRouter API
CANCAN2G/3G2G/3G WLanWLan
SecuritySecurity
C2X ProtocolsC2X Protocols
LoggingAPI
LoggingAPI
Testing distributed C2X applications – T3UC 2011
* The Vehicle API (VAPI) is provided by Volkswagen
Systematic testing approach (overview)
• Testing a single C2X application: The IVS system is stimulated using the Vehicle API (VAPI) with speed and position data that simulate a complete car ride. After about two seconds, the vehicle stopped and put the hazard lights on. It is verified if the system generates a suitable obstacle avoidance messages and if the message is sent.
• Testing of Distributed C2X applications on one IVS or more IVS or on an IVS and IRS: The system is stimulated with speed and position data for two vehicles using the VAPI of the respective IVS. Vehicle 1 drives on the highway at a constant speed, vehicle 2 will follow with 15 delay on the same route. Vehicle 2 reduces the vehicle speed to zero and sets the hazard lights. The expected behaviour, vehicle 1 sends an obstacle avoidance and vehicle 2 warns the driver
• Testing the protocol layer (802.11 p): The test of geographically-scoped broadcast communication is based on three IVS. All IVS will be stimulated with plausible vehicle data (e.g. constant speed and vehicle distance 300m). Using the communication interface of the vehicle 1 the test system sends a message (e.g. obstacle avoidance), which is addressed to a particular geographical area. It will be checked if the vehicle will receive the message when passing the area.