Zero packet loss with bounded latency is a must for many applications such as industrial control networks, automotive Ethernet, and aircraft communication systems. Traditional networks cannot meet such strict requirement and thus Time-Sensitive Networking (TSN) emerges. TSN is a set of standards proposed by IEEE 802 for providing deterministic connectivity in terms of low packet loss, low packet delay variation, and guaranteed packet transport. However, to the best of our knowledge, few of existing TSN solutions can deterministically achieve zero packet loss with bounded latency. This paper fills in this blank by proposing a novel input-queueing TSN switching architecture, under which we design a TDMA-like scheduling policy (called M-TDMA) along with a sufficient condition, and an EDF-like scheduling policy (called M-EDF) along with a different sufficient condition to achieve zero packet loss with bounded latency.
翻译:对工业控制网络、汽车以太网和飞机通信系统等许多应用而言,必须做到零包损失,传统网络无法满足如此严格的要求,因此出现了时间敏感联网(TSN)。 TSN是IEE 802提出的一套标准,目的是在低包损失、低包延迟变异和保证包装运输方面提供确定性连接。然而,据我们所知,现有的 TSN 解决方案中很少有能以约束性延缓方式最终实现零包损失。本文填补了空白,提出了一个新的输入式排挤 TSN 切换结构,据此,我们设计了一个类似TDMA的排期政策(称为M-TDMA ), 以及一个类似EDF的排期政策(称为M-EDF ), 以及一个不同的足够条件,可以实现带紧凑的零包损失。