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802.1ASbt - Timing and Synchronization: Enhancements and Performance Improvements

The full title of this PAR is "Standard for Local and Metropolitan Area Networks - Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks Amendment: Enhancements and performance improvements".

This amendment specifies enhancements to IEEE Std 802.1AS that are backward compatibile with the features defined in the 2011 version of the standard, including, if necessary, a means of version discovery.

The enhancements that are to be considered by this project include:

This amendment allows IEEE 802.1AS to be used: with a greater number of network media types and a greater variety of network configurations, and more effectively with existing and new media types and network configurations.

When development of IEEE Std 802.1AS:2011 began, the main focus was on audio/video (A/V) applications; also, the initial focus was on full-duplex IEEE 802.3 media, and support for IEEE 802.11, IEEE 802.3 EPON, and Coordinated Shared Network media was added during the course of the project. While IEEE 802.1AS:2011 allows effective transport of synchronization over gPTP networks that contain the above media, to support A/V applications, the enhancements described in the scope will allow it to be used more effectively for a greater variety of applications (e.g., embedded applications), and with a greater variety of network media and configurations.

Status
StatusPAR approved Sep 10th, 2011
EditorGeoff Garner

Archive
DateDocument
26 Aug 2013802.1ASbt, Draft 0.1
30 Oct 2013802.1ASbt, Draft 0.2
15 Jan 2014802.1ASbt, Draft 0.3
14 Mar 2014802.1ASbt, Draft 0.4

Presentations
DateDocument
07 Nov 2011Presentation asbt-huang-measurement-of-link-delay-asymmetry-1031-v00.pdf

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Last modified by jmesseng, at 6:10PM on Fri, 14 Mar 2014