extendingomnet++towardsaplatform … · extending omnet++ towards a platform for the design of...

Extending OMNeT++ Towards a Platformfor the Design of Future

In-Vehicle Network Architectures

Till Steinbach Philipp Meyer Stefan Buschmann Franz Korf

Hamburg University of Applied [email protected]

OMNeT++ Community Summit15. September 2016 , Brno University of Technology, Czech Republic

RE NET

Hochschule für Angewandte Wissenschaften Hamburg Hamburg University of Applied Sciences

Extending OMNeT++Towards a Platform forthe Design of FutureIn-Vehicle Network

Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow

Conclusion & Outlook

REAgenda

1 Introduction

2 Simulation Models

3 Toolchain

4 Workflow

5 Conclusion & Outlook

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REIntroduction

In-vehicle networks face a paradigm changeCommunication architectures today:

CANFlexRayLINMOST

Switched real-time Ethernet is promising candidatefor future communication architectures1

Stepwise transition from heterogeneous busarchitecture towards a single flat Ethernet topology

1Kirsten Matheus and Thomas Königseder:Automotive Ethernet. Jan. 2015.

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REIntroduction

Current tools focus on bit-correct fieldbus simulationNew tools are required for design and evaluationThese environments have to support analysis ofcongestion and jitterThe OMNeT++ platform provides a perfect baseWe want to provide an easy to use environmentIn this work we contribute:

Simulation modelsTools to designTools to evaluateA uniform workflow

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REAgenda

1 Introduction

2 Simulation Models

3 Toolchain

4 Workflow


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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


RESimulation ModelsOverview

SignalsAndGateways

Signal sources, Gateways

CoRE4INET

Real-time Ethernet FiCo4OMNeT

Fieldbusses (CAN, FlexRay)INET Framework

Internet Technologies / Protocols

provided contributed

Vehicle network model

OMNeT++

IDE and Simulation kernel

CoRE4INET(Communication over Real-time Ethernet for INET)FiCo4OMNeT(Fieldbus Communication for OMNeT++)SignalsAndGateways

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


RESimulation ModelsCoRE4INET

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 classesIncoming traffic selection and constraint checksModels for oscillators, timers and schedulersApplication models for traffic patternsFlexible combining of media access strategies

Checked against analytical models and empiricaltests

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


RESimulation ModelsFiCo4OMNeT

Currently supported standards:CANFlexRay

Currently supported features:Models for oscillators and timersApplication models for traffic patterns

Checked against results of CANoe simulationenvironment

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


RESimulation ModelsSignalsAndGateways

Fills the gap betweenCoRE4INET and FiCo4OMNeTGateway translate between(real-time) Ethernet and fieldbussesFor flexibility it contains three submodules:

RoutingBufferingTransformation

Gateway can host applications

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REAgenda

1 Introduction

2 Simulation Models

3 Toolchain

4 Workflow


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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REToolchainOverview

OMNeT++

IDE and Simulation kernel

SignalsAndGateways

Signal sources, Gateways

CoRE4INET

Real-time Ethernet FiCo4OMNeT

Fieldbusses (CAN, FlexRay)INET Framework

Internet Technologies / Protocols

Abstract Network Description Language (ANDL)

Vehicle network model

oppResultManagers

Recording of results, Constraint checks

provided contributed optional

Gantt

Chart

Timing

Analyzer

(GCTA)

Eclipse Updatesite (https://sim.core-rg.de/updates)-> get pluginsCoRE model installer (OMNeT++ plugin)-> get simulation models

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REToolchainAbstract Network Description Language

Configuring large heterogeneous networks is complexand lengthyDomain Specific Language (DSL) reduces effortEclipse plugin using Xtext technologySupported features:

Syntax highlightingCode completionScheduling algorithms (for TDMA technologies2)Simple inheritanceInline ini configuration

2Jan 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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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REToolchainGantt Chart Timing Analyzer

Specialized analysis tool as OMNeT++ pluginTraces jitter and delay in cyclic communicationUses a timing log (.tlog) file written duringsimulationGCTA compresses all occurrences of a cyclicmessage into one single chart

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REToolchainGantt Chart Timing Analyzer

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REToolchainoppResultManagers

Set of modules for OMNeT++ simulations:called ResultManagersOMNeT++ vector and scalar recording are build-ininstances of ResultManagersContributed in oppResultManagers:

PCAPngSQLite & postgreSQLConstraint ChecksMultiple

Functionality is not restriced to our simulationmodels

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REAgenda

1 Introduction

2 Simulation Models

3 Toolchain

4 Workflow


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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REWorkflowOverview

simulation

generation

ANDL

Network

Description

INI

NED

XML

Simulation

Configuration

INET

CoRE4INET

FiCo4OMNeT

SignalsAndGateways

Simulation

Model

ELOG / SCA / VEC

CSV

GCTA

SQLite/postgreSQL

PCAPng

Simulation

Results

configuration

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REWorkflowNetwork Description

Abstract Network Description Language File:

Continued on next slide...

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REWorkflowNetwork Description

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REWorkflowSimulation Configuration / Model

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REWorkflowSimulation Configuration / Model

Uses all three simulation models and INETGenerated config (.ini/.ned/.xml) > 250 linesResulting network:

Additonal configuration of ResultManagers in ini file:

postgreSQL:

PCAPng:

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REWorkflowSimulation Results

OMNeT++ (scalar, vector and eventlog)WireShark (PCAPng)GCTA (timinglog)Database (mySQL, postgreSQL)

Use-case postgreSQL database:

Client

Workstation

Database

Server

Simulation

Cluster

Simulation

Worker

Simulation

Worker

Simulation

Worker

Client

Workstation

Client

Workstation

op

tio

nal

Start simulation

Access results

(query)Results

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REAgenda

1 Introduction

2 Simulation Models

3 Toolchain

4 Workflow


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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REConclusion

In-car communication technologies are changingSimulation on system-level supports the processWe contribute a simulation environment with:

Simulation modelsDevelopment toolsAnalysis tools

Specialized tools can support the workflowOMNeT++ is a solid foundation for thedevelopment of such plugin tools

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REOutlook

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

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REQuestions

Thank you for your attention!

Website of CoRE research group:https://core-rg.de/Website of simulation models:https://sim.core-rg.de/

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Architectures

Philipp Meyer

Introduction

Simulation Models

Toolchain

Workflow


REReferences I

[1] Kirsten Matheus and Thomas Königseder.Automotive Ethernet. Cambridge, United Kingdom:Cambridge University Press, Jan. 2015.

[2] Jan Kamieth et al. “Design of TDMA-based In-Car Networks:Applying Multiprocessor Scheduling Strate-gies on Time-triggered Switched Ethernet Communication”. In:19th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2014).Barcelona: IEEE Press, 2014, pp. 1–9. DOI:10.1109/ETFA.2014.7005119. ieeexplore: 7005119.

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http://dx.doi.org/10.1109/ETFA.2014.7005119

7005119

extendingomnet++towardsaplatform … · extending omnet++ towards a platform for the design of...

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