IEEE SA - P802.1ASbt - IEEE 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: - Support for link aggregation (IEEE 802.1AX, IEEE 802.1AXbk, and 802.1AXbq). - Support for new media types, with corresponding media-dependent layers, e.g., IEEE Std 1901 and WiFi Direct. - Interoperability with one-step clocks on receive (but with no requirement to generate one-step Sync messages). - Support for redundant paths. - Enhancements to the determination of asCapable (e.g., longer cable lengths, new media types). - Incorporation of the interfaces specified in IEEE Std 802.3bf into the IEEE 802.3 full-duplex media-dependent layer model. - Improved performance (e.g., improved grandmaster changeover time, longer chains of time-aware systems). - Carrying information on alternate time scales (e.g., local time for a respective time zone). - Management support for automatic measurement of link delay asymmetry. - Additional parameter sets for non-Audio/Video applications, e.g., industrial control.

Status:

Working Group: WG802.1 - Higher Layer LAN Protocols Working Group

Sponsor: C/LM - LAN/MAN Standards Committee

Society: C - IEEE Computer Society

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