The Time-Sensitive Networking (TSN) set of standards introduces in IEEE 802.1 switches and end stations novel features to meet the requirements of a broad spectrum of applications that are characterized by time-sensitive and mission-critical traffic flows. In particular, the IEEE802.1Qbv-2015 amendment introduces enhancements that provide temporal isolation for scheduled traffic, i.e., a traffic class that requires transmission based on a known timescale, while the IEEE802.1Qbu-2016 introduces preemption as a mechanism to allow time-critical messages to interrupt ongoing non time-critical transmissions. Both amendments, that are now enrolled in the IEEE802.1Q-2018 standard, are very important for industrial networks, where scheduled traffic and low-latency real-time flows have to coexist, on the same network, with best-effort transmissions.

In this context, this work presents a response time analysis of TSN networks that encompasses the enhancements for scheduled traffic and preemption, in various combinations. The paper presents the proposed analysis and a performance comparison between the response times calculated by the analysis and the response times obtained through OMNeT++ simulations in three different scenarios.

时间敏感网络（TSN）标准集在IEEE 802.1交换机和终端站中引入了新颖的功能，可以满足以时间敏感和关键任务流量为特征的广泛应用的需求。特别是，IEEE802.1Qbv-2015修订版引入了增强功能，可为计划的流量提供临时隔离，即需要基于已知时标进行传输的流量类别，而IEEE802.1Qbu-2016则引入了抢占作为允许时间间隔的机制。关键消息，以中断正在进行的非时间关键的传输。现已纳入IEEE802.1Q-2018标准的两项修正案对于工业网络非常重要，在工业网络中，必须将调度的流量和低延迟实时流在同一网络上与尽力而为的传输方式共存。

在这种情况下，这项工作提出了对TSN网络的响应时间分析，其中包括以各种组合形式对调度流量和抢占进行的增强。本文介绍了提出的分析，并通过分析计算出的响应时间与通过OMNeT ++仿真在三种不同情况下获得的响应时间之间的性能比较。