View
3
Download
0
Category
Preview:
Citation preview
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
2
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
3
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
5
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
6
• 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
7
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
8
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
9
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
10
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
11
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
12
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
13
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
14
NEXT GENERATION ARCHITECTURE THE ROAD AHEAD
• Distributed Computer Network Programmed
as a Car • Automotive Plug and Play requires a Service
Based Architecture
15
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
16
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)
17
• 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
18
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!
19
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
20
Sachin Shinde Senior Engineer – Vehicle Communication Networks
Electrical, Electronic & Software Engineering
Ethernet journey at jaguar land roverCONTENTSOUR BUSINESS�ETHERNET JOURNEY�WHY ETHERNETETHERNET JOURNEY�2012 - 2015ETHERNET JOURNEY�2015ETHERNET JOURNEY�2017 AND BEYONDBACKBONE ENABLED ARCHITECTURE�CHALLENGESBACKBONE ENABLED ARCHITECTURE�CHALLENGESBACKBONE ENABLED ARCHITECTURE�CHALLENGESBACKBONE ENABLED ARCHITECTURE�CHALLENGESBACKBONE ENABLED ARCHITECTURE�CHALLENGESBACKBONE ENABLED ARCHITECTURE�CHALLENGESBACKBONE ENABLED ARCHITECTURE�CHALLENGESNEXT GENERATION ARCHITECTURE�THE ROAD AHEAD�NEXT GENERATION ARCHITECTURE�NEXT GENERATION ARCHITECTURE�CHALLENGESNEXT GENERATION ARCHITECTURE�DEMONSTRATIONSNEXT GENERATION ARCHITECTURE�FURTHER CHALLENGESTHANK YOU
Recommended