SMT-based Task- and Network-level Static Schedule for Time Sensitive Network

Abstract

Time Sensitive Network (TSN) is a high-quality realtime transmission network with bounded transmission delay, low transmission jitter and extremely low data loss rate. This paper studies the application-level scheduling problem of time-triggered traffic in time-sensitive networks. Firstly, we define a network systematization model, which communicates through time-triggered traffic classes, and treats tasks and network communication as the same scheduling problem, and search the whole solution space. Secondly, the design goal is set to minimize the total delay of all applications, use the defined model to construct logical constraints, and correctly describe the combination of network and task scheduling. At the same time, unnecessary constraints are reduced and the scheduling model is simplified. Finally, a comprehensive method of distributed system application layer scheduling using time-triggered traffic in Ethernet communication is proposed. Different optimization goals are considered in the method, and the work is focused on application-level optimization. The experimental evaluation uses various comprehensive network topologies and system configurations, which show that the comprehensive scheduling method can effectively solve the scheduling problem and meet the requirements of time-critical tasks.