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.

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Providing Fine-Grained Latency Control for Time Sensitive Networking: A Reordering Method

  • Zhuangye Luo,
  • Feng Zeng,
  • Xi Chen

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.