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 → surface form: "Time-Sensitive Networking (TSN)" bridged local area networks →
basedOn	IEEE 1588 Precision Time Protocol standard → surface form: "IEEE 1588 Precision Time Protocol"
category	Time-Sensitive Networking standard →
defines	clock state machines → IEEE 802.1AS timing and synchronization standard → surface form: "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 802.1AS timing and synchronization standard → surface form: "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	IEEE 802.3 Ethernet standard → surface form: "Ethernet"
organization	Institute of Electrical and Electronics Engineers →
partOf	IEEE 802.1 standards family → surface form: "IEEE 802.1 family" Time-Sensitive Networking (TSN) standards →
relatedTo	IEEE 802.1Q VLAN tagging standard → surface form: "IEEE 802.1Q" IEEE 802.1Qav forwarding and queuing for time‑sensitive streams standard → surface form: "IEEE 802.1Qav" IEEE 802.1Qbu frame preemption standard → surface form: "IEEE 802.1Qbu" IEEE 802.1Qbv time‑sensitive networking standard → surface form: "IEEE 802.1Qbv"
scope	local area networks → metropolitan area networks →
standardBody	IEEE 802 LAN/MAN Standards Committee → surface form: "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	IEEE 1588 Precision Time Protocol standard → surface form: "Best Master Clock Algorithm" master-slave clock hierarchy →

Referenced by (24)

Full triples — surface form annotated when it differs from this entity's canonical label.

CQF → compatibleWith → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS time synchronization"

IEEE 802.1AS timing and synchronization standard → defines → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1AS"

this entity surface form: "generalized Precision Time Protocol (gPTP)"

IEEE Standards Association → develops → IEEE 802.1AS timing and synchronization standard →

IEEE 802.1 TSN task group → developsStandard → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1 TSN Task Group"

this entity surface form: "IEEE 802.1AS"

IEEE 802.1 TSN task group → developsStandard → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1 TSN Task Group"

this entity surface form: "IEEE 802.1AS-Rev"

IEEE 802.1 TSN task group → developsStandard → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1 TSN Task Group"

this entity surface form: "IEEE 802.1AS Timing and Synchronization for Time-Sensitive Applications"

IEEE 802.1AS timing and synchronization standard → fullName → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1AS"

this entity surface form: "IEEE Standard for Local and Metropolitan Area Networks – Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks"

PTP → hasProfile → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

Audio Video Bridging → includes → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

IEEE 802.1 standards family → includes → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

TSN → includes → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

Time-Sensitive Networking → relatedStandard → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

IEEE 802.1CB → relatedTo → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

IEEE 802.1CB Frame Replication and Elimination for Reliability → relatedTo → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

IEEE 802.1Q series → relatedTo → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

IEEE 802.1Qat stream reservation protocol standard → relatedTo → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1Qat"

this entity surface form: "IEEE 802.1AS"

IEEE 802.1Qdo TSN for industrial automation standard → relatedTo → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1Qdo"

this entity surface form: "IEEE 802.1AS"

IEEE 802.1Qdy TSN for industrial IoT standard → relatedTo → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

SRP → relatedTo → IEEE 802.1AS timing and synchronization standard →

subject surface form: "Stream Reservation Protocol"

this entity surface form: "IEEE 802.1AS"

IEEE 802.1 Working Group → responsibleFor → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

Time-Sensitive Networking (TSN) standards → standardIncludes → IEEE 802.1AS timing and synchronization standard →

subject surface form: "Time-Sensitive Networking"

this entity surface form: "IEEE 802.1AS"

Time-Sensitive Networking (TSN) standards → standardIncludes → IEEE 802.1AS timing and synchronization standard →

subject surface form: "Time-Sensitive Networking"

this entity surface form: "IEEE 802.1AS-Rev"

Audio Video Bridging → timeSyncStandard → IEEE 802.1AS timing and synchronization standard →

this entity surface form: "IEEE 802.1AS"

IEEE 802.1Qbv time‑sensitive networking standard → typicallyUsedWith → IEEE 802.1AS timing and synchronization standard →

subject surface form: "IEEE 802.1Qbv"

this entity surface form: "IEEE 802.1AS time synchronization standard"