====== TSN - Time Sensitive Networking ======

TSN stands for time-sensitive networking. It is a set of different standards for transmitting data in Ethernet networks. These standards are currently being defined by the standardization organization for Ethernet-based communication IEEE 802.1. TSN also consists of a series of individual standards that mainly expand the data link layer (Layer 2 of the ISO-OSI model) of the communication system. TSN is thus not a complete communication protocol but rather a basic technology that can be used by higher-level applications. Higher protocols, such as PROFINET and OPC UA, are found on Layers 5 through 7 of the ISO-OSI model and remain unchanged.

  * Time Synchronization (IEEE 802.1AS)
      * IEEE 802.1AS Timing and Synchronization for Time-Sensitive Applications
  * TSN based scheduling and traffic shaping (IEEE 802.1Qbv, Qbu, Qcr)
      * IEEE 802.1Qbv Enhancements to Traffic Scheduling: Time-Aware Shaper (TAS)
      * IEEE 802.1Qbv in more detail: Time slices and guard bands
      * IEEE 802.3br and 802.1Qbu Interspersing Express Traffic (IET) and Frame Preemption
      * Shortcomings of IEEE 802.1Qbv/bu
      * IEEE 802.1Qcr Asynchronous Traffic Shaping
  * AVB credit-based scheduler (IEEE 802.1 Qav, Qat)
      * IEEE 802.1Qav Forwarding and Queuing Enhancements for Time-Sensitive Streams
      * IEEE 802.1Qat Stream Reservation Protocol
  * Enhancements to AVB scheduling (IEEE 802.1 Qcc, Qch, Qci)
      * IEEE 802.1Qcc Enhancements to SRP
      * IEEE 802.1Qch Cyclic Queuing and Forwarding (CQF)
      * IEEE 802.1Qci Per-Stream Filtering and Policing (PSFP)

===== Related =====

  * [[technology:industrial-ethernet:tsn:opcua-readiness|Is OPC UA PubSub over TSN ready to adopt?]] — the staged evaluation we use to answer that
  * [[technology:industry40:opcua:s2opc:qsg:etfpubsub|S2OPC PubSub over TSN — a worked setup]]
  * [[technology:industry40:dds:use-cases:automotive-tsn|DDS over TSN in automotive]]
  * [[technology:industrial-ethernet:start|Industrial Ethernet]]