  Edge enabled Industrial Internet of Things (IIoT) platform is of great
significance to accelerate the development of smart industry. However, with the
dramatic increase in real-time IIoT applications, it is a great challenge to
support fast response time, low latency, and efficient bandwidth utilization.
To address this issue, Time Sensitive Network (TSN) is recently researched to
realize low latency communication via deterministic scheduling. To the best of
our knowledge, the combinability of multiple flows, which can significantly
affect the scheduling performance, has never been systematically analyzed
before. In this article, we first analyze the combinability problem. Then a
non-collision theory based deterministic scheduling (NDS) method is proposed to
achieve ultra-low latency communication for the time-sensitive flows. Moreover,
to improve bandwidth utilization, a dynamic queue scheduling (DQS) method is
presented for the best-effort flows. Experiment results demonstrate that
NDS/DQS can well support deterministic ultra-low latency services and guarantee
efficient bandwidth utilization.
