1. The Fully Networked Car Geneva, 3-4 March 2010 1 Ethernet in Automotive applications Helge Zinner Norbert Balbierer Continental Automotive GmbH

2. The Fully Networked Car Geneva, 3-4 March 2010 2 Continental Ethernet/IP Motivation Car Networks Evolution and Forecast Increasing o Bandwidth o Technology Diversity o Nr. of Sub-Networks o Complexity o BoM o Personal Costs o Weight o Cable Space Seamless IP World IP (Internet Protocol) / Ethernet BU B&S Antenna BU I&C Connectivity Telematics BU I&C Multimedia Rearseat BU ID Instrum entation & Displays BU B&S Body Control BU ADAS Cameras BU C Mobile Devices Div C BU S, CC, EBS Optical Ethernet Electrical Ethernet "Wireless" Ethernet The most successful Network Technology becomes Automotive Div P BU ES, S&A, TR

3. The Fully Networked Car Geneva, 3-4 March 2010 3 Topics currently addressed o Real Time Ethernet for Automotive AVB introduction AVB for Automotive o Network and configuration management Selective wakeup and shutdown Car network management 3

4. The Fully Networked Car Geneva, 3-4 March 2010 4 Real Time Ethernet for Automotive What is Audio Video Bridging (AVB)? Time Synchronisation Forwarding and Queuing Enhancements Stream Reservation 802.1 AS 802.1 Qav 802.1 Qat

5. The Fully Networked Car Geneva, 3-4 March 2010 5 Real Time Ethernet for Automotive Why does AVB suite In-Vehicle Requirements? 802.1 AS o Common time basis Synchronization of networked ECUs Coordinating multiple ECUs o Meets jitter and wander requirements Guarantees timely execution Administration free protocol TFT RSE Switch Speaker HU Switch Speaker DVD Master Clock Synchronized Clock

6. The Fully Networked Car Geneva, 3-4 March 2010 6 Real Time Ethernet for Automotive Why does AVB suite In-Vehicle Requirements? 802.1 Qav ABS DVD ACC Switch HU o Segregate, rate frames in Switches Separation of Real time traffic (e.g. Brake) from Non-real time traffic (e.g. Audio) Allows physical consolidation of subnetworks Protects the vehicle from external traffic o Queing and traffic shaping Assures maximum delays Reduces latency Gives class based gurantees

7. The Fully Networked Car Geneva, 3-4 March 2010 7 Real Time Ethernet for Automotive Why does AVB suite In-Vehicle Requirements? 802.1 Qat o Event triggered QoS Flexible to changing environments More effective use of bandwidth o Dynamic network resource reservation Reservation on demand Guarantees fixed ressources Dynamic End-to-End management ABS TFT ACC CAM Switch Resource Reservation Switch

8. The Fully Networked Car Geneva, 3-4 March 2010 8 Real Time Ethernet for Automotive Impact of AVB on Architecture Multimedia Powertrain Chassis Multimedia Body

9. The Fully Networked Car Geneva, 3-4 March 2010 9 Real Time Ethernet for Automotive Summary and next steps o Ethernet AVB provides Quality of Service necessary in the vehicle o Ethernet AVB provides similar costs to standard Ethernet o Current activities: Integration of AVB in Automotive ECUs o The authors recommend to use standards o Research on QoS model for different data transmission o Evaluation of enhancements and modifications of AVB

10. The Fully Networked Car Geneva, 3-4 March 2010 10 Network and Configuration Management o Not all ECUs needed at a time, depending on vehicle state  Energy can be preserved by disabling unneeded devices o Need for controlled activation and deactivation of devices or subsystems o At present: done by energy detection on common bus systems (CAN, MOST, FlexRay) Bus topology

11. The Fully Networked Car Geneva, 3-4 March 2010 11 Network and Configuration Management Energy detection in fully switched Ethernet networks o Physical point-to-point connections o Activity only detected by one single host o Control host state by controlling link state o Advantage: Ability to control devices individually Switched Ethernet

12. The Fully Networked Car Geneva, 3-4 March 2010 12 o Sent when PHY is enabled o Used for Link Test (10BaseTX) Autonegotiation (100, 1000BaseT) o Sent every 16 ms o New additional use: Link energy control 12 Network and Configuration Management Link Pulses Single pulse: approx. 2 V amplitude, 100 ns duration

13. The Fully Networked Car Geneva, 3-4 March 2010 13 Network and Configuration Management Fundamental elements of the concept Network Manager Switch Manager Link Energy Detection Notifications Control & Surveillance Link Activity management protocol, e.g. SNMP

14. The Fully Networked Car Geneva, 3-4 March 2010 14 Network and Configuration Management Current activities and next steps o Integration of SNMP into an Automotive Environment o Examination of different approaches to network configuration o Research on algorithms which allow dynamic reconfiguration of the system o Analysis of energy saving capabilities o Realization of an experimental model network for concept evaluation 14

15. The Fully Networked Car Geneva, 3-4 March 2010 15 For Questions/Discussion Please mail to: helge.zinner@continental-corporation.com norbert.balbierer@continental-corporation.com josef.noebauer@continental-corporation.com Continental Automotive GmbH Regensburg, Germany

16. The Fully Networked Car Geneva, 3-4 March 2010 16 Backup

17. The Fully Networked Car Geneva, 3-4 March 2010 17 Demonstrator Setup