A Performance Analysis Framework of Time-Triggered Ethernet Using Real-Time Calculus

Abstract

<jats:p>With increasing demands of deterministic and real-time communication, network performance analysis is becoming an increasingly important research topic in safety-critical areas, such as aerospace, automotive electronics and so on. Time-triggered Ethernet (TTEthernet) is a novel hybrid network protocol based on the Ethernet standard; it is deterministic, synchronized and congestion-free. TTEthernet with a time-triggered mechanism meets the real-time and reliability requirements of safety-critical applications. Time-triggered (TT) messages perform strict periodic scheduling following the offline schedule tables. Different scheduling strategies have an effect on the performance of TTEthernet. In this paper, a performance analysis framework is designed to analyze the end-to-end delay, backlog bounds and resource utilization of network by real-time calculus. This method can be used as a base for the performance evaluation of TTEthernet scheduling. In addition, this study discusses the impacts of clock synchronization and traffic integration strategies on TT traffic in the network. Finally, a case study is presented to prove the feasibility of the performance analysis framework.</jats:p>

Time Sensitive Networking Protocol Implementation for Linux End Equipment

“…Therefore, over the last 35 years, various conventional Ethernet-based enhancements have been developed. Examples of these protocols are, for instance, Profinet [2], EtherCAT (industry) [3], AFDX (aerospace) [4], or Time-Triggered (TT) Ethernet (automotive) [5]. They are incompatible with each other and with conventional Ethernet because they incorporate different mechanisms to guarantee determinism.…”