IEEE 802.1Qbu

E57122

Ethernet standard IEEE standard networking standard

IEEE 802.1Qbu is an Ethernet networking standard that defines frame preemption to improve latency and reliability for time-sensitive traffic in bridged networks.

Aliases (3)

Statements (38)

Predicate	Object
instanceOf	Ethernet standard → IEEE standard → networking standard →
appliesTo	Ethernet LANs → bridged networks →
category	link-layer protocol specification →
defines	MAC Merge sublayer behavior → frame preemption →
domain	Time-Sensitive Networking → automotive Ethernet → industrial Ethernet → professional audio-video networks →
ensures	integrity of preempted frames via reassembly →
extends	IEEE 802.1Q →
focus	preemption of lower-priority frames by higher-priority frames →
improves	bandwidth utilization for mixed-criticality traffic → predictability of high-priority traffic latency →
layer	data link layer →
mechanism	express traffic classes → frame fragmentation and reassembly → preemptable traffic classes →
media	full-duplex Ethernet links →
organization	Institute of Electrical and Electronics Engineers →
partOf	IEEE 802.1 family → Time-Sensitive Networking →
primaryGoal	improve latency for time-sensitive traffic → improve reliability for time-sensitive traffic →
relatedTo	IEEE 802.1Qav → IEEE 802.1Qbv → IEEE 802.1Qch →
supports	deterministic networking → low-latency communication → time-sensitive traffic →
targetUseCase	in-vehicle networks → industrial automation networks → real-time control systems →
usedWith	IEEE 802.3br →
workingGroup	IEEE 802.1 Working Group →

Referenced by (23)

Subject (surface form when different)	Predicate
IEEE 802.1CB → IEEE 802.1CB Frame Replication and Elimination for Reliability → IEEE 802.1Qcc → IEEE 802.1Qdj → IEEE 802.1Qdo → IEEE 802.1Qds → IEEE 802.1Qdy TSN for industrial IoT standard → IEEE 802.1Qdz → IEEE 802.1Qec → IEEE 802.1Qei → IEEE 802.1Qej → IEEE 802.1Qfa → IEEE 802.1Qfc → IEEE 802.1Qff →	relatedTo
IEEE 802.1 standards family → IEEE 802.1 standards family ("IEEE 802.1Qbr") → IEEE 802.1 standards family ("IEEE 802.1Qen") → IEEE 802.1 standards family ("IEEE 802.1Qfb") → IEEE 802.1Q Time-Sensitive Networking amendments →	includes
IEEE 802.1 TSN Task Group →	developsStandard
Time-Sensitive Networking →	relatedStandard
IEEE 802.1 Working Group →	responsibleFor
Time-Sensitive Networking →	standardIncludes