Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Till Steinbach
Philipp Meyer
Stefan Buschmann
Franz Korf
Hamburg University of Applied Sciences
[email protected]
OMNeT++ Community Summit 15. September 2016 , Brno University of Technology, Czech Republic
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Agenda
1 Introduction
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer
2 Simulation Models
Introduction Simulation Models Toolchain
3 Toolchain
Workflow Conclusion & Outlook
4 Workflow 5 Conclusion & Outlook
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Introduction
In-vehicle networks face a paradigm change Communication architectures today: CAN FlexRay LIN MOST
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow
Switched real-time Ethernet is promising candidate for future communication architectures1
Conclusion & Outlook
Stepwise transition from heterogeneous bus architecture towards a single flat Ethernet topology 1
Kirsten Matheus and Thomas Königseder:Automotive Ethernet.
Jan. 2015.
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Introduction
Current tools focus on bit-correct fieldbus simulation New tools are required for design and evaluation
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer
These environments have to support analysis of congestion and jitter
Introduction
The OMNeT++ platform provides a perfect base
Toolchain
We want to provide an easy to use environment In this work we contribute:
Simulation Models
Workflow Conclusion & Outlook
Simulation models Tools to design Tools to evaluate A uniform workflow
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Agenda
1 Introduction
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer
2 Simulation Models
Introduction Simulation Models Toolchain
3 Toolchain
Workflow Conclusion & Outlook
4 Workflow 5 Conclusion & Outlook
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Simulation Models Overview
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures
Vehicle network model SignalsAndGateways Signal sources, Gateways CoRE4INET Real-time Ethernet INET Framework Internet Technologies / Protocols
Philipp Meyer
FiCo4OMNeT Fieldbusses (CAN, FlexRay)
Introduction Simulation Models
OMNeT++ IDE and Simulation kernel provided
Toolchain Workflow
contributed
Conclusion & Outlook
CoRE4INET (Communication over Real-time Ethernet for INET) FiCo4OMNeT (Fieldbus Communication for OMNeT++) SignalsAndGateways Hochschule für Angewandte Wissenschaften Hamburg Hamburg University of Applied Sciences
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Simulation Models CoRE4INET
Currently supported standards: TTEthernet protocol suite (AS6802) AVB traffic shapers (IEEE 802.1Qav) Ethernet with priorities (IEEE 802.1Q)
Currently supported features: Models to map IP traffic to real-time traffic classes Incoming traffic selection and constraint checks Models for oscillators, timers and schedulers Application models for traffic patterns Flexible combining of media access strategies
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
Checked against analytical models and empirical tests
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Simulation Models FiCo4OMNeT
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Currently supported standards: CAN FlexRay
Currently supported features: Models for oscillators and timers Application models for traffic patterns
Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
Checked against results of CANoe simulation environment
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Simulation Models SignalsAndGateways
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Fills the gap between CoRE4INET and FiCo4OMNeT Gateway translate between (real-time) Ethernet and fieldbusses For flexibility it contains three submodules: Routing Buffering Transformation
Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
Gateway can host applications
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Agenda
1 Introduction
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer
2 Simulation Models
Introduction Simulation Models Toolchain
3 Toolchain
Workflow Conclusion & Outlook
4 Workflow 5 Conclusion & Outlook
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Toolchain Overview Vehicle network model
Abstract Network Description Language (ANDL) SignalsAndGateways Signal sources, Gateways CoRE4INET Real-time Ethernet INET Framework Internet Technologies / Protocols
FiCo4OMNeT Fieldbusses (CAN, FlexRay)
Gantt Chart Timing Analyzer (GCTA)
Philipp Meyer Introduction Simulation Models
oppResultManagers Recording of results, Constraint checks
Toolchain
OMNeT++ IDE and Simulation kernel provided
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures
Workflow contributed
optional
Conclusion & Outlook
Eclipse Updatesite (https://sim.core-rg.de/updates) -> get plugins CoRE model installer (OMNeT++ plugin) -> get simulation models Hochschule für Angewandte Wissenschaften Hamburg Hamburg University of Applied Sciences
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Toolchain Abstract Network Description Language
Configuring large heterogeneous networks is complex and lengthy Domain Specific Language (DSL) reduces effort Eclipse plugin using Xtext technology Supported features:
Philipp Meyer Introduction Simulation Models Toolchain
Syntax highlighting Code completion Scheduling algorithms (for TDMA technologies2 ) Simple inheritance Inline ini configuration 2
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures
Workflow Conclusion & Outlook
Jan Kamieth et al.:“Design of TDMA-based In-Car Networks: Applying Multiprocessor
Scheduling Strategies on Time-triggered Switched Ethernet Communication”.
2014.
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Toolchain Gantt Chart Timing Analyzer
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Specialized analysis tool as OMNeT++ plugin Traces jitter and delay in cyclic communication Uses a timing log (.tlog) file written during simulation GCTA compresses all occurrences of a cyclic message into one single chart
Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
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Toolchain Gantt Chart Timing Analyzer
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Toolchain oppResultManagers
Set of modules for OMNeT++ simulations: called ResultManagers OMNeT++ vector and scalar recording are build-in instances of ResultManagers Contributed in oppResultManagers: PCAPng SQLite & postgreSQL Constraint Checks Multiple
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
Functionality is not restriced to our simulation models
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Agenda
1 Introduction
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer
2 Simulation Models
Introduction Simulation Models Toolchain
3 Toolchain
Workflow Conclusion & Outlook
4 Workflow 5 Conclusion & Outlook
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Workflow Overview
Network Description
generation
ANDL
Simulation Configuration INI NED XML
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain
configuration
Workflow Conclusion & Outlook
Simulation Model
simulation
INET CoRE4INET FiCo4OMNeT SignalsAndGateways
Simulation Results ELOG / SCA / VEC CSV GCTA SQLite/postgreSQL PCAPng
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Workflow Network Description
Abstract Network Description Language File:
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
Continued on next slide... Hochschule für Angewandte Wissenschaften Hamburg Hamburg University of Applied Sciences
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Workflow Network Description
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
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Workflow Simulation Configuration / Model
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
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Workflow Simulation Configuration / Model
Uses all three simulation models and INET Generated config (.ini/.ned/.xml) > 250 lines Resulting network:
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow
Additonal configuration of ResultManagers in ini file:
Conclusion & Outlook
postgreSQL:
PCAPng: Hochschule für Angewandte Wissenschaften Hamburg Hamburg University of Applied Sciences
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Workflow Simulation Results
OMNeT++ (scalar, vector and eventlog)
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures
WireShark (PCAPng) GCTA (timinglog)
Philipp Meyer
Database (mySQL, postgreSQL) Introduction
Use-case postgreSQL database:
Simulation Models Toolchain
optional
Client Workstation
Client Workstation
Simulation Cluster Simulation Worker
Start simulation
Access results (query)
Database Server
Client Workstation
Results
Workflow Conclusion & Outlook
Simulation Worker
Simulation Worker
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Agenda
1 Introduction
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer
2 Simulation Models
Introduction Simulation Models Toolchain
3 Toolchain
Workflow Conclusion & Outlook
4 Workflow 5 Conclusion & Outlook
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Conclusion
RE Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures
In-car communication technologies are changing Simulation on system-level supports the process We contribute a simulation environment with: Simulation models Development tools Analysis tools
Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
Specialized tools can support the workflow OMNeT++ is a solid foundation for the development of such plugin tools
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Outlook
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer
Adding new technologies to our simulation suite: Ethernet with frame preemption (discussed in IEEE 802.1Qbu) CAN with flexible data rate (CAN FD)
Refinement of result analysis tools
Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
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Questions Thank you for your attention!
Extending OMNeT++ Towards a Platform for the Design of Future In-Vehicle Network Architectures Philipp Meyer Introduction Simulation Models Toolchain Workflow Conclusion & Outlook
Website of CoRE research group: https://core-rg.de/ Website of simulation models: https://sim.core-rg.de/ Hochschule für Angewandte Wissenschaften Hamburg Hamburg University of Applied Sciences
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References I
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[1]
[2]
Kirsten Matheus and Thomas Königseder. Automotive Ethernet. Cambridge, United Kingdom: Cambridge University Press, Jan. 2015.
Philipp Meyer Introduction Simulation Models
Toolchain Jan Kamieth et al. “Design of TDMA-based In-Car Networks: Applying Multiprocessor Scheduling StrateWorkflow gies on Time-triggered Switched Ethernet Communication”. In: Conclusion & Outlook 19th IEEE International Conference on Emerging Technologies and Factory Automati Barcelona: IEEE Press, 2014, pp. 1–9. DOI: 10.1109/ETFA.2014.7005119. ieeexplore: 7005119.
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