Evaluation of Real-Time Ethernet with Time Synchronization and Time-Aware Shaper Using OMNeT++

Packet-switch Ethernet has been considered as a future communication standard for automotive and industrial applications because of its compatibility, scalability and high speed. However, many real-time systems in these domains need predictability which traditional packet-switch Ethernet does not support. Time-Sensitive Networking (TSN) is an upcoming set of standards aiming to provide deterministic services such as guaranteed packet transport with bounded low latency, low jitter, and low packet loss. In this paper, we present an OMNeT++ simulation model to simulate TSN time-based features. We provide a realistic clock-drift model and apply it to a distributed embedded system. Moreover, we utilize time synchronization and time-aware shaper to implement a high-accuracy scheduling. The simulation results show that the aforementioned protocols provide predictability for the system.