ETHERNET JOURNEY AT JAGUAR LAND ROVER CHALLENGES IN THE DEVELOPMENT OF AN ETHERNET BACKBONE

Vector Automotive Ethernet Symposium 2017 Wednesday, May 3rd, 2017

Syreeta Bath - Technical Specialist – Vehicle Communication Networks Sachin Shinde - Senior Engineer – Vehicle Communication Networks

CONTENTS

• Our Business • Ethernet Journey • Backbone Enabled Architecture

− Challenges • Next Generation Architecture

− Further Challenges

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OUR BUSINESS

• 15 vehicle lines. • 3 UK vehicle assembly plants, 1 engineering

and manufacturing centre and 2 UK design and engineering sites.

• 40,000 people globally – headcount has almost doubled over the last five years.

• Plants in China, India and Brazil. • Employs over 10,000 engineers and

designers and actively recruiting • Sales network in 137 countries. • Jaguar Land Rover is the largest automotive

employer in the UK. • 201 awards won in 2016

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ETHERNET JOURNEY WHY ETHERNET

• Next Generation Infotainment concept • Network to carry Control Data, Internet, Audio and Video • Unconstrained by the network • Decouple applications from the network • Embrace consumer technology • Emergence of BroadR-Reach • Joined Open Alliance as Promoter • Use cases for Ethernet across all vehicle domains

ETHERNET JOURNEY 2012 - 2015

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2015

In 2015 InControl TouchPro Infotainment system launched to high acclaim!

• Master controller with Broadcom

Polar Switch • AVB 802.1 AS running in Switch • BroadR-Reach links front to rear • Any media any screen • Multiple HW and SW suppliers

collaborating

2012

• Start of Ethernet Pre development for Infotainment

• Focus on 100 Base T1 Physical Layer and Ethernet Protocols

ETHERNET JOURNEY 2015

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• New electrical architecture Pre

development

2015 • FlexRay • AutoSAR 4.x • UTP solution for Ethernet 100Base-T1 • DoIP for Diagnostics & Software

Download

Many new technologies deployed in parallel!

ETHERNET JOURNEY 2017 AND BEYOND

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2017

Ethernet Backbone Capability

Development of Dynamic Network

2017 20xx

BACKBONE ENABLED ARCHITECTURE CHALLENGES

• Challenges faced when considering Ethernet Communication within the vehicle − Protocols to use and how to configure − Command and Control − Audio & Video

− VLAN Implementation within a vehicle environment − How to configure the switch for AVB and VLANs − Bandwidth requirements and how to control − Diagnostics − DoIP between Ethernet nodes − How to capture Ethernet traffic (Port Mirroring)

− Time synchronisation

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BACKBONE ENABLED ARCHITECTURE CHALLENGES

• Ethernet communication compatibility

between non Infotainment domain and Infotainment domain

• Exchange information between classic networks and Ethernet via a Gateway

• Prove out Ethernet functionality within AutoSAR

• AutoSAR Ethernet Stack Configuration and Toolchain capability

• Synchronisation of data between networks

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JLR worked on a project with Vector to demonstrate:

BACKBONE ENABLED ARCHITECTURE CHALLENGES

• To utilise Ethernet capability when sending data between different network types − Configuration of triggering of container PDU’s − Rules for Ethernet to non Ethernet communication to ensure that trade off between

gateway loading and network bandwidth is considered

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BACKBONE ENABLED ARCHITECTURE CHALLENGES

• Communication with existing non AutoSAR SOME/IP nodes − Limited set of SOME/IP message types

supported in AutoSAR − SOME/IP Configuration within ARXML

• Ethernet Start-up Timing

− Slower start-up times than seen on traditional networks

− Configuration of switches at start-up − Negotiation time between the nodes started

late − No wake on LAN capability at time of

development

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BACKBONE ENABLED ARCHITECTURE CHALLENGES

• Time synchronisation over Ethernet using IEEE 802.1 AS − Meeting pDelay requirement for AS

Standard • Switch vs Host Controller

Timestamping − Accuracy & Predictability

• Time synchronisation over CAN & FlexRay are different domains using one global clock each with its own synchronisation period

• Switchover of the GrandMaster − Not supported in AutoSAR

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BACKBONE ENABLED ARCHITECTURE CHALLENGES

• Additional knowledge gained for configuring the switch − VLAN Configuration – Static and runtime − Traffic shapers and scheduler for bandwidth control − Data Mirroring – Port based

• Switch Operating Modes − Managed mode allows analysis and modification of special Ethernet packets e.g. PTP − Managed mode more difficult to get working needs additional driver code/switch firmware

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BACKBONE ENABLED ARCHITECTURE CHALLENGES

• Configuration within AutoSAR − Configuration of Time Sync for all classic buses − Mixed AutoSAR versions - configuration and generation of ARXML files − Diagnostics configuration (DoIP, DHCP/AutoIP) − Analysis of generated ARXML/FIBEX contents

• Test Tools

− Tools with FIBEX with Ethernet support minimal − Difficult to perform manual simulation for Ethernet as compared to traditional networks − FIBEX with AutoSAR concepts e.g. container PDU/SOMEIP

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NEXT GENERATION ARCHITECTURE THE ROAD AHEAD

• Distributed Computer Network Programmed

as a Car • Automotive Plug and Play requires a Service

Based Architecture

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NEXT GENERATION ARCHITECTURE

Distributed Network Programmed as a Car • Consumer electronic gadgets have given high expectations where consumers are happy to

receive new features by a software update • High number of static network configurations currently used imposes limitations on how new

features can be updated − A more dynamic methodology needs to be adopted − Complexity of features and functions are growing at a higher rate

Service Based Architecture • Resolve the increasing vehicle variants • Hardware & Software Re-use • Support bandwidth increase

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NEXT GENERATION ARCHITECTURE CHALLENGES

• Collection of single busses, partly

connected via gateways forwarding specific messages

• Mainly sender centric transmission of data, only a few services

• Moving of functions and ECUs requires manual update of static network configuration

• Detailed design and configuration of each network variant required (complex variant handling and software logistics)

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• Structured network with different speed

grades, access to any service from any sub-network/bus

• Every function represented as a service offered to apps/services (in the same process, computing platform, network, or in the cloud)

• Moving of functions and devices with automatic update of network configuration

• Only network topology planning, all the details shall be done automatically

Shift from Static to Dynamic Network

NEXT GENERATION ARCHITECTURE DEMONSTRATIONS

• ConherenSE Middleware • Automotive Plug and Play

• Described last year at the IEEE Automotive Ethernet and IP Tech Day • Currently being demonstrated and analysed

• TSN in an SOA environment • Currently being demonstrated and analysed • Ultra low guaranteed latency • Redundancy

• Network security solutions for SOA • Currently being demonstrated and analysed

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NEXT GENERATION ARCHITECTURE FURTHER CHALLENGES

• Distributed Computer Network Programmed as a Car − Vehicle as a Device

• Solutions for video transfer • Security of access to I/O • Proving Dependability

Lots of work still to do, will not be a single step to end game, physics and availability of technology will help decide!

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Jaguar Land Rover W/1/26 Abbey Road, Whitley Coventry CV3 4LF, UK

jaguarlandrover.com

THANK YOU Syreeta Bath Technical Specialist – Vehicle Communication Networks

Electrical, Electronic & Software Engineering

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Sachin Shinde Senior Engineer – Vehicle Communication Networks

Electrical, Electronic & Software Engineering

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