Global Cyclic Queuing and Forwarding Mechanism for Large-Scale Deterministic Networks
Yijun Mo, Zihan Yang, Huiyu Liu, Tianliu He · 2021
Delay and jitter sensitive industrial control and remote driving application-driven network by best-effort to deterministic service. To meet the deterministic application of delay and jitter demands, industry and academia have conducted detailed research on stream filtering shaping and queue forwarding control. However, the study seldom considers the effects of long-distance topology change, transmission delay fluctuations and short-time traffic overloads, challenging to meet deterministic requirements under large-scale backbone networks. For this challenge, this paper based on Cyclic Queuing and Forwarding, considers source-destination path properties and deterministic traffic intensity. We propose Global Cyclic Queuing and Forwarding 3-Queue. In the deterministic network simulation system based on OMNeT, we constructed the actual network topology NSFNET, which has 14 nodes and 21 links. Experiments compare queue forwarding control mechanisms such as CQF and GCQF-3. The experimental results show that under the traffic matrix with 120% strength, the delay is reduced by 23.6%, the jitter is reduced by 53.6%, and the packet loss rate is reduced by 61%. It shows that GCQF-3 can timely adjust the gate-control and queueing priority according to the deterministic traffic state, achieves the best in delay, jitter and network utilization.