Time-Sensitive Networking (TSN)

The Time-Sensitive Networking Task Group is part of the IEEE 802.1 Working Group. For general information, e.g., ongoing and archive TSN projects, please refer to the sidebar on the left. For published IEEE 802.1 standards, please refer to the IEEE Get Program.

The charter of the TSN TG is to provide deterministic services through IEEE 802 networks, i.e., guaranteed packet transport with bounded latency, low packet delay variation, and low packet loss. The TSN TG has been evolved from the former 802.1 Audio Video Bridging TG. The TSN TG includes the former 802.1 Interworking TG. The original work on AV bridging was done as part of the “Residential Ethernet Study Group” of IEEE 802.3. An introductory presentation and an overview paper may be useful in order to get started. TSN standards can be applied in many verticals, e.g., industrial and automotive networks.

Ongoing projects:

See the TSN section of the 802.1 home page.

TSN standards:

  • IEEE Std 802.1Qbu-2016: IEEE Standard for Local and Metropolitan Area Networks — Bridges and Bridged Networks — Amendment 26: Frame Preemption
  • IEEE Std 802.1Qbv-2015: IEEE Standard for Local and Metropolitan Area Networks — Bridges and Bridged Networks — Amendment 25: Enhancements for Scheduled Traffic
  • IEEE Std 802.1Qca-2015: IEEE Standard for Local and Metropolitan Area Networks — Bridges and Bridged Networks — Amendment 24: Path Control and Reservation
  • IEEE Std 802.1Qch-2017: IEEE Standard for Local and Metropolitan Area Networks — Bridges and Bridged Networks — Amendment 29: Cyclic Queuing and Forwarding
  • IEEE Std 802.1Qci-2017: IEEE Standard for Local and Metropolitan Area Networks — Bridges and Bridged Networks — Amendment 28: Cyclic Queuing and Forwarding
  • IEEE Std 802.1CB-2017: IEEE Standard for Local and Metropolitan Area Networks — Frame Replication and Elimination for Reliability

AVB standards:

  • IEEE Std 802.1AS-2011: IEEE Standard for Local and Metropolitan Area Networks — Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks. It provides a Layer 2 time synchronizing service that is appropriate for the most stringent requirements of consumer electronics applications. This was done in cooperation with the IEEE 1588 working group, and so the point-to-point 802.3 sublayer of 802.1AS is a specific profile of IEEE Std 1588-2008. See also IEEE 802.1AS-2011/Cor1-2013 and IEEE 802.1AS-2011/Cor1-2015.
  • IEEE Std 802.1Qat-2010 – IEEE Standard for Local and Metropolitan Area Networks — Virtual Bridged Local Area Networks – Amendment 14: Stream Reservation Protocol (SRP), which has been rolled into IEEE Std 802.1Q-2014.
  • IEEE Std 802.1Qav-2009 – IEEE Standard for Local and Metropolitan Area Networks — Virtual Bridged Local Area Networks – Amendment 12: Forwarding and Queueing Enhancements for Time-Sensitive Streams, which specifies the Credit Based Shaper. It has been rolled into IEEE Std 802.1Q-2014.
  • Establishment of a set of usage-specific profiles that will help ensure interoperability between networked devices using the AV bridging specifications. The original version of this work has been published as “IEEE Std 802.1BA-2011 : Standard for Local and Metropolitan Area Networks: Audio Video Bridging (AVB) Systems”. A project to amend this standard will be started once the other new AVB projects are complete..

All participants should keep up to date on the current “assumptions” document since it includes much of the background information on technical approaches and work that needs to be done.

The original work on AV bridging was done as part of the “Residential Ethernet Study Group” of 802.3

Conference call meetings:

In addition to meeting during the regular 802.1 interims and 802 plenaries, the 802.1 TSN TG holds two weekly phone calls, one for general TSN issues and one specifically for 802.1AS-revision work. Note that these calls may be canceled. Please refer to announcements made on the 802.1 email list.

Regular calls

Date/Time: General: Mondays at 8AM US-Pacific
AS-Revision: Mondays at 9AM US-Pacific
be careful: US daylight/summer time transition is different from the rest of the world
Length: Usually 60 minutes for each slot, 120 minutes together
Meeting ID: Join Me link
Meeting Code: ieee802.1
Dial-in information: United States – New York, NY +1.646.307.1990
United States – San Francisco, CA +1.415.655.0381
Canada – Ottawa +1.613.699.9318
Finland – Helsinki +358.9.4259.9698
France – national +33.9.7518.1777
Germany – Frankfurt +49.69.9753.3131
Hong Kong – national +852.58.08.1989
Hungary – Budapest +36.1.700.8899
Israel – Tel Aviv +972.3.763.0434
Japan – Tokyo +81.3.4579.5983
Sweden – Stockholm +46.8.4030.8819
United Kingdom – Cambridge +44.1223.85.9774
United Kingdom – London +44.33.0088.2634
United Kingdom – Manchester +44.161.820.1607
More international numbers
Access Code 684-645-640#

NOTE: Everyone *must* review the IEEE patent procedures as outlined at http://standards.ieee.org/board/pat/pat-slideset.pdf

Agendas

Active Agenda

The currently active agenda (meaning the agenda of the FtF meeting currently under way, or the meeting just completed) can be found at the “current agenda” page of the informal “802TSN.org” site.

Agenda Requests

You can make agenda time requests at the appropriate page of the informal “802TSN.org” site.

Historical Agendas

The previous meeting agendas are also available at the informal “802TSN.org” site.

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