- Gateways in current/future architectures
- Main GW functions (Routing, Diagnostic, …)
- Main principles of GW’s functionality (SW aspects, protocol aspects, AUTOSAR aspects)
- LIN/CAN/FlexRay 2 Ethernet transport mechanisms (1722a)
GW performance aspects
- Ethernet GW/Switch in future EE architectures
Characteristics of different GW types
|No. of interfaces||No. of GWs per vehicle||Diagnostic interface||Comments|
|Central GW||any no. of LIN/CAN/FR||<= 1||possible||Increasing no. of itfs.|
|Local GW||1 x domain bus itf.
n x subdomain bus itfs.
|>= 0||not possible|
|Domain GW||1 x domain bus itf.
1-2 x backbone itf.
|GW with integrated Switch||any no. of LIN/CAN/FR/Eth||>= 0||possible|
- Message Routing
- Packet Routing
- Signal Routing (eventually with signal processing)
- Routing with High Priority
- Different sorts of rate adaption between received and transmitted message, e.g.
- Periodic & Immediate Transmit On Change (TOC)
- Y Routing
- Diagnostic Routing
Other Gateway Functions
- Nominal-actual configuration comparison
- Diagnostic tester: CAN BUS and Ethernet interface provided (in BMW F series for example)
- Flash function
- Message mirroring on diagnostic bus
- Network management
- OEM specific features
Gateway Protocol Stack Overview
Notes: IL = Interaction Layer according OSEK Comms 3.03 and AUTOSAR; adopts messages/signals to PDUs