Scheduling in time sensitive networks (TSN) for mixed-criticality industrial applications

Voica Gavriluţ, P. Pop
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引用次数: 58

Abstract

IEEE 802.1 Time-Sensitive Networking (TSN) is a set of IEEE standards that extend Ethernet for safety-critical and real-time applications. TSN is envisioned to be widely used in several applications areas, from industrial automation to in-vehicle networking. TSN supports mixed-criticality applications via multiple traffic classes: Time-Triggered (TT) communication, Audio-Video-Bridging (AVB) streams with bounded end-to-end latency as well as Best-Effort messages. TT traffic is scheduled via Gate Control Lists (GCLs) specified for each queue of an egress port. Although researchers have started to propose approaches for the GCL synthesis, all the work so far has ignored lower priority real-time traffic such as AVB, resulting in GCLs that increase the worst-case delays of AVB traffic rendering it unschedulable. In this paper, we propose a GCL synthesis approach based on a Greedy Randomized Adaptive Search Procedure, which takes into account the AVB traffic, such that both TT and the AVB traffic are schedulable. Our approach is evaluated on several test cases.
混合临界工业应用的时间敏感网络(TSN)调度
IEEE 802.1时间敏感网络(TSN)是一组IEEE标准,扩展了以太网,用于安全关键型和实时应用。TSN预计将广泛应用于从工业自动化到车载网络等多个应用领域。TSN通过多种流量类别支持混合关键应用:时间触发(TT)通信,具有有限端到端延迟的音视频桥接(AVB)流以及尽力而为的消息。TT流量通过为出口端口的每个队列指定的门控制列表(gcl)进行调度。尽管研究人员已经开始提出GCL综合的方法,但到目前为止,所有的工作都忽略了低优先级的实时交通,如AVB,导致GCL增加了AVB交通的最坏情况延迟,使其无法调度。在本文中,我们提出了一种基于贪婪随机自适应搜索过程的GCL综合方法,该方法考虑了AVB流量,使得TT和AVB流量都是可调度的。我们的方法是在几个测试用例上评估的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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