Skip to content. | Skip to navigation

Personal tools

This is SunRain Plone Theme

Navigation

You are here: Home / Events / INET Seminar / Till Steinbach: Beware of the Hidden! Analyzing the Influences of Background Traffic on Competing Standards for In-Car Communication Based on Ethernet

Till Steinbach: Beware of the Hidden! Analyzing the Influences of Background Traffic on Competing Standards for In-Car Communication Based on Ethernet

Vortrag und Demo für die IEEE LCN 2015
When Oct 21, 2015
from 04:00 PM to 06:30 PM
Where R 460
Contact Name
Add event to calendar vCal
iCal

Real-time Ethernet is expected to become the core technology of future in-car communication networks. Following its current adoption in subsystems for info- and entertainment, broadband Ethernet promises new features in the core of upcoming car series. Its full potential will enfold when deploying Ethernet-based backbones that consolidate all automotive domains on a single physical layer at increased bandwidth but reduced complexity and cost. In such a backbone, traffic with a variety of real-time requirements and best-effort characteristics will share the same physical infrastructure. However, certain applications like online diagnosis, data- or firmware updates, and access to off-board backends will introduce bursty high traffic loads to the sensitive core of the cars communication network.

In this work, we analyze the robustness against cross-traffic of real-time Ethernet protocols. Based on a realistic in-car scenario, we demonstrate that background cross-traffic can have significant impact on in-car backbone networks—even for real-time protocols with strict prioritization. By comparing the real-time approaches Ethernet AVBs asynchronous credit based shaping with the time-triggered and rate-constrained traffic classes of Time-triggered Ethernet (AS6802) we quantify how different media access policies suffer from low priority bursts of applications such as diagnosis, online updates or backend-based services. Our simulation study of a realistic in-car backbone design and traffic model reveals that in a realistic in-car network design, cross-traffic may increase end-to-end latency by more than 500% while the jitter can become 14 times higher than for a network without background tasks. We discuss ways to mitigate these degrading effects. 


Slides

Document Actions

Filed under:
Navigation
« December 2018 »
December
MoTuWeThFrSaSu
12
3456789
10111213141516
17181920212223
24252627282930
31
Upcoming Events
RIOT Hack'n'ACK (2018/12) Dec 18, 2018 05:00 PM - 11:00 PM — HAW Hamburg, BT7, R4.60
Upcoming events…