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October 2009 - present
Publications
Publications (20)
This chapter gives an overview on various real-time communication protocols, from the Controller Area Network (CAN) that was standardized over twenty years ago but is still popular, to the FlexRay protocol that provides strong predictability and fault tolerance, to the more recent Ethernet-based networks. The design of these protocols including the...
One of the key challenges in future Ethernet-based
automotive and industrial networks is the low-latency transport
of time-critical data. To date, Ethernet frames are sent non-
preemptively. This introduces a major source of delay, as, in
the worst-case, a latency-critical frame might be blocked by a
frame of lower priority, which started transmiss...
In the future, vehicles are expected to act more and more autonomously. The transition towards highly automated and autonomous driving will push the safety requirements for in-vehicle networks. Such networks must support isolation between mixed-critical traffic (e.g. critical control and non-critical infotainment) and must be fail-operational. This...
Software defined networking (SDN) aims to standardize the control and configuration of network infrastructure.
It consolidates network control by moving the network’s control
plane to a (logically) centralized controller and downgrading
switches to simple forwarding devices. This offers huge advantages for future automotive Ethernet networks, inclu...
Future in-vehicle networks will use Ethernet as their
communication backbone. As many automotive applications are
latency-sensitive and have strict real-time requirements, a key
challenge in automotive network design is the deterministic
low-latency transport of latency-critical Ethernet frames. Time-sensitive networking (TSN) is an upcoming set of...
Due to increased bandwidth and scalability demands, Ethernet technology is finding its way into recent in-vehicle networks. Tomorrow’s heterogeneous networks will feature legacy buses [e.g. controller area network (CAN) or FlexRay] as well as high-speed Ethernet devices, connected by switches and gateways. As Ethernet offers significantly larger fr...
This chapter gives an overview on various real-time communication protocols, from the Controller Area Network (CAN) that was standardized over twenty years ago but is still popular, to the FlexRay protocol that provides strong predictability and fault tolerance, to the more recent Ethernet-based networks. The design of these protocols including the...
Ethernet is considered as a future communication
standard for distributed embedded systems in the automotive
and industrial domains. A key challenge is the deterministic
low-latency transport of Ethernet frames, as many safety-critical
real-time applications in these domains have tight timing requirements. Time-sensitive networking (TSN) is an upco...
Ethernet is an emerging technology in the automotive domain and is capable to overcome the bandwidth and scalability limits of traditional buses like CAN or FlexRay. Formal performance analysis methods are required to verify the timing, e.g. by providing upper bounds on end-to-end latencies, in safety-critical real-time systems, such as automotive...
Ethernet networks become increasingly popular in many distributed, embedded application domains. In safety-critical real-time systems, such as industrial control or driver assistance systems, formal performance analysis methods are required to verify the timing, e.g. by providing upper bounds on end-to-end latencies. These formal methods, however,...
High-performance video applications with real-time requirements play an important role in diverse application fields and are often executed by advanced parallel processors or GPUs. For embedded scenarios with strict energy constraints such as automotive image processing, FPGAs represent a feasible power-efficient computer platform. Unfortunately, t...
New hard real-time Advanced Driver Assistance Systems such as the Collision-Avoidance System push the bandwidth requirements of the communication infrastructure to a new level. Controller Area Network (CAN) and FlexRay are reaching their limits. Ethernet-based automotive networks such as Ethernet AVB are capable of addressing these requirements. Ho...
Switched networks are widely used in today's real-time embedded systems - be it on-chip (Network on Chip) or off-chip (Ethernet). They are scalable, cheap, and provide high data rates. However, communication is affected by transmission errors or packet drops. Error-control protocols such as Stop and Wait and Go-Back-N provide an end-to-end mechanis...
Ethernet is the hottest candidate for future in-car communication architecture, promising much higher bandwidth, flexibility and reduced costs. In the coming years, Ethernet will likely evolve from a separate communication medium for special applications like surround-view cameras and infotainment to a central communication infrastructure as a back...
Führende Fahrzeughersteller zeigen, dass an Ethernet im Auto kein Weg vorbei führt. Gleichzeitig ist jedoch der Entwurfsraum, das heißt die Menge der möglichen Konfigurationen, extrem groß. Welche ist die „beste“ Topologie? Welches sind die besten Switch-Strategien? Wie paketiere ich die Signale der Anwendungsebene? Hierfür braucht die Autoindustri...
Ethernet networks become increasingly popular in many distributed embedded applications. As an alternative to strict priority (SP) scheduling, weighted round robin (WRR) is supported by most commercially available Ethernet switches. In WRR scheduling the link capacity is distributed fairly among traffic streams according to preset weights on a per...
Ethernet is increasingly recognized as the future communication standard for distributed embedded systems in multiple domains such as industrial automation, automotive and avionics. A main motivation for this is cost and available data rate. A critical issue in the adoption of Ethernet in these domains is the timing of frame transfers, as many rele...
Contemporary embedded systems, which process streaming data such as signal, audio, or video data, are an increasingly important part of our lives. Shared resources (e.g. memories) help to reduce the chip area and power consumption of these systems, saving costs in high volume consumer products. Resource sharing, however, introduces new timing inter...
