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

Transcription

1 ETHERNET JOURNEY AT JAGUAR LAND ROVER CHALLENGES IN THE DEVELOPMENT OF AN ETHERNET BACKBONE Vector GB Ltd Annual Conference 2017 Wednesday, September 27th, 2017 Syreeta Bath - Technical Specialist Vehicle Communication Networks Sachin Shinde - Senior Engineer Vehicle Communication Networks

2 CONTENTS Our Business Ethernet Journey Backbone Enabled Architecture Challenges Next Generation Architecture Further Challenges 2

3 OUR BUSINESS 14 vehicle lines. 3 UK vehicle assembly plants, 1 engineering and manufacturing centre and 2 UK design and engineering sites. Almost 42,000 people globally headcount has almost doubled over the last five years. Plants in China, India and Brazil. Employs 10,000 engineers and designers. Sales network in 137 countries. Jaguar Land Rover is the largest automotive employer in the UK. 213 awards won in 2016/17 FY. Invests 1.8 billion in Research and Development. 3

4 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

5 ETHERNET JOURNEY Start of Ethernet Pre development for Infotainment Focus on 100 Base T1 Physical Layer and Ethernet Protocols In 2015 InControl TouchPro Infotainment system launched to high acclaim! Master controller with Broadcom Polar Switch AVB AS running in Switch BroadR-Reach links front to rear Any media any screen Multiple HW and SW suppliers collaborating 5

6 ETHERNET JOURNEY 2015 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! 6

7 ETHERNET JOURNEY 2017 AND BEYOND Ethernet Backbone Capability xx Development of Dynamic Network 7

8 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

9 BACKBONE ENABLED ARCHITECTURE CHALLENGES Jaguar Land Rover worked on a project with Vector to demonstrate: 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

10 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 FlexRay frames CAN frames Container PDU Collection Timeout = 60ms, Contains CAN A, CAN B, CAN C, FlexRAY A, FlexRay B, FlexRay C FlexRay A FlexRay B FlexRay C CAN A CAN B CAN C Ethernet Header Ethernet Header Ethernet Header Ethernet Header CAN A CAN A FlexRay A CAN B CAN A FlexRay A CAN B FlexRay B CAN C CAN A FlexRay A CAN B FlexRay B CAN C FlexRay C 40ms Time (ms) FlexRay A CAN A CAN B Ethernet Header Ethernet Header Ethernet Header Ethernet Header Ethernet Header Ethernet Header CAN A CAN A CAN A CAN A CAN A CAN A FlexRay A FlexRay A FlexRay A FlexRay A CAN B CAN B 60ms (Partially filled PDU) 10

11 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

12 BACKBONE ENABLED ARCHITECTURE CHALLENGES Time synchronisation over Ethernet using IEEE 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

13 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

14 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

15 NEXT GENERATION ARCHITECTURE THE ROAD AHEAD Distributed Computer Network Programmed as a Car Automotive Plug and Play requires a Service Based Architecture 15

16 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

17 NEXT GENERATION ARCHITECTURE CHALLENGES Shift from Static to Dynamic Network 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) 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 17

18 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

19 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

20 THANK YOU Syreeta Bath Technical Specialist Vehicle Communication Networks Electrical, Electronic & Software Engineering Jaguar Land Rover W/1/26 Abbey Road, Whitley Coventry CV3 4LF, UK jaguarlandrover.com Sachin Shinde Senior Engineer Vehicle Communication Networks Electrical, Electronic & Software Engineering 20