A Feasibility Analysis Framework of Time-Sensitive Networking Using Real-Time Calculus

In the field of intelligent connected vehicles, as the rate of in-vehicle communication continues to increase, the importance of real-time and reliability requirements has been more prominent. The time-sensitive networking (TSN) task group is dedicated to the amendments for meeting the urgent needs in the industrial field. In the implementation of the TSN, time latency bounds of critical traffic, memory bounds of nodes and utilization of transmission resources are needed to evaluate the feasibility of the TSNs. In this paper, we propose a framework called component-based analysis (CBA) to analyze these properties. In CBA, we use a data model, a resource model, and a component model to construct an abstract model of the TSNs with the system architecture and analyze the feasibility of this abstract model with real-time calculus. Moreover, we discuss the preemption mechanism mentioned in IEEE 802.1Qbu to handle the conflict of different priority queues, which has a serious influence on the resource model of the TSNs. Finally, we validate this framework by performing an analysis on a synthetic case and compare the obtained properties with different conflict handling mechanisms.