Hybrid Flow Scheduling with Additional Simple Compensation Mechanisms in Time-Sensitive Networks

Abstract

With the increasing of distributed energy resources, in order to ensure system security and flexibility, the same switching device must support the mixed transmission of multiple streams. Therefore, the mechanism of hybrid streaming is urgently needed. The IEEE Time-Sensitive Networking (TSN) Task Force is working to standardize key mechanisms to enable simultaneous coexistence of time-sensitive and non-time-sensitive flows in Ethernet. In this paper, we propose a hybrid traffic scheduling mechanism for HFSM-C. This mechanism combines TAS with CQF, and utilizes flow ordering, injection slot adjustment and the simple compensation mechanism proposed in this paper to schedule time-sensitive flow and large-bandwidth flow respectively. Through experiments, we found that the HFSM-C mechanism significantly improves the schedule-ability compared with other mechanisms, and under the same TSN system settings, it schedules more flows than the HSTC mechanism, the FITS mechanism and the Tabu-ITP mechanism when scheduling large-bandwidth flows, the success rate is higher, and the efficient scheduling of mixed flows is realized.