A Preemption Method for QoS Based on Time-Sensitive Network

Abstract

In-vehicle networks are increasingly using complex functions to enhance user convenience. This has led to a rise in both the number of Electronic Control Units (ECUs) and the bandwidth between data traffic. Ethernet communication has been adopted to address this issue in a network where multimedia and control traffic coexists. However, a solution was still required to maintain Quality-of-Service (QoS), which led to the emergence of the Time-Sensitive Network (TSN). In this situation, TSN, which defines rules for real-time, reliability, etc., is gaining attention. In this paper, we compare the performance of Time Aware Shaper (TAS) and frame preemption methods for real-time scheduling among TSN protocols. Furthermore, we propose a method to enhance QoS by predicting overhead and flexibly selecting preemption size.