Providing Fine-Grained Latency Control for Time Sensitive Networking: A Reordering Method
摘要
Time Sensitive Networking is an Ethernet-based technology to provide bounded latency and controllable jitter for critical traffic (CT). The existing traffic shapers for deterministic transmission of CT either require high-precision clock synchronization or fail to achieve fine-grained control of latency and jitter. To overcome these limitations, we analyze the critical defect of mainstream shapers and propose a novel traffic shaper O-CSQF and matched traffic scheduling algorithm PHI which can achieve high-precision latency and controllable jitter for CT with low deployment cost. The key idea of O-CSQF and PHI is controlling the sending time of each CT packet according to the requirements. Extensive evaluation results demonstrate that O-CSQF and PHI enable fine-grained control of CT latency and jitter while achieving high schedulability.