IEEE 802.1AS timing and synchronization standard

E2824

IEEE standard profile of IEEE 1588 time synchronization protocol

The IEEE 802.1AS timing and synchronization standard defines precise time synchronization mechanisms for time-sensitive networking over Ethernet, enabling coordinated, low-latency communication in applications such as industrial automation and audio/video transport.

Aliases (7)

Statements (48)

Predicate	Object
instanceOf	IEEE standard → profile of IEEE 1588 → time synchronization protocol →
appliesTo	Time-Sensitive Networking (TSN) → bridged local area networks →
basedOn	IEEE 1588 Precision Time Protocol →
category	Time-Sensitive Networking standard →
defines	clock state machines → generalized Precision Time Protocol (gPTP) → message formats for timing information → path delay measurement procedures → precise time synchronization mechanisms for Ethernet networks → requirements for frequency synchronization → requirements for phase synchronization → requirements for syntonization → synchronization accuracy objectives → time distribution over full-duplex Ethernet links → time-aware bridges → time-aware end stations → time-aware systems →
enables	coordinated scheduling of time-sensitive traffic → synchronization of control loops → synchronization of media streams →
ensures	common notion of time across network nodes →
fullName	IEEE Standard for Local and Metropolitan Area Networks – Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks →
goal	provide precise and reliable time synchronization over Ethernet →
improves	end-to-end latency predictability → jitter performance for time-sensitive traffic →
layer	data link layer →
medium	Ethernet →
organization	Institute of Electrical and Electronics Engineers →
partOf	IEEE 802.1 family → Time-Sensitive Networking (TSN) standards →
relatedTo	IEEE 802.1Q → IEEE 802.1Qav → IEEE 802.1Qbu → IEEE 802.1Qbv →
scope	local area networks → metropolitan area networks →
standardBody	IEEE 802.1 Working Group →
supports	automotive in-vehicle networks → deterministic communication → industrial automation → low-latency communication → professional audio/video transport → time-sensitive applications →
uses	Best Master Clock Algorithm → master-slave clock hierarchy →

Referenced by (24)

Subject (surface form when different)	Predicate
IEEE 802.1CB ("IEEE 802.1AS") → IEEE 802.1CB Frame Replication and Elimination for Reliability ("IEEE 802.1AS") → IEEE 802.1Q series ("IEEE 802.1AS") → IEEE 802.1Qat ("IEEE 802.1AS") → IEEE 802.1Qdo ("IEEE 802.1AS") → IEEE 802.1Qdy TSN for industrial IoT standard ("IEEE 802.1AS") → Stream Reservation Protocol ("IEEE 802.1AS") →	relatedTo
IEEE 802.1 TSN Task Group ("IEEE 802.1AS") → IEEE 802.1 TSN Task Group ("IEEE 802.1AS-Rev") → IEEE 802.1 TSN Task Group ("IEEE 802.1AS Timing and Synchronization for Time-Sensitive Applications") →	developsStandard
Audio Video Bridging ("IEEE 802.1AS") → IEEE 802.1 standards family ("IEEE 802.1AS") → TSN ("IEEE 802.1AS") →	includes
Time-Sensitive Networking ("IEEE 802.1AS") → Time-Sensitive Networking ("IEEE 802.1AS-Rev") →	standardIncludes
CQF ("IEEE 802.1AS time synchronization") →	compatibleWith
IEEE 802.1AS ("generalized Precision Time Protocol (gPTP)") →	defines
IEEE Standards Association →	develops
IEEE 802.1AS ("IEEE Standard for Local and Metropolitan Area Networks – Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks") →	fullName
PTP ("IEEE 802.1AS") →	hasProfile
Time-Sensitive Networking ("IEEE 802.1AS") →	relatedStandard
IEEE 802.1 Working Group ("IEEE 802.1AS") →	responsibleFor
Audio Video Bridging ("IEEE 802.1AS") →	timeSyncStandard
IEEE 802.1Qbv ("IEEE 802.1AS time synchronization standard") →	typicallyUsedWith