XhaulNet: 宇航级确定性时间敏感以太网 TSN 与微秒级无损前传调度协议

XhaulNet 规范化部署跨天基光交换系统的 IEEE 802.1 时间敏感网络 (TSN) 标准，为 5G/6G 无线前传与关键指控遥测提供微秒级确定性低抖动承载。

XhaulNet Time-Aware Shaper (TAS) Space Optical Mesh Engine

IEEE 802.1Qbv scheduled gate queuing synchronizing optical laser packet bursts

Central System: Spaceborne PTP Grandmaster Clock - Rubidium atomic clock disciplined by multi-GNSS constellation

Network Nodes

Spaceborne PTP Grandmaster Clock
IEEE 802.1Qbv Time-Aware Switch
IEEE 802.1Qbu Preemption Core
Ultra-Low Jitter Optical Driver

Architectural Protocol Layers

Spaceborne PHY/MAC Layer (3GPP Rel-17 TS 38.300): Doppler compensation, HARQ disabling, and timing advance extension.
Orbital Mesh Routing (CCSDS / Delay-Tolerant Networking): Dynamic topology routing over intermittent laser crosslinks.
Regenerative Core Processing (OpenRAN / 3GPP CU-DU Split): Onboard user plane function (UPF) local breakout.

Key Metrics: < 18ms (LEO Orbit-to-Ground Roundtrip) | 100 Gbps (Optical Crosslink Throughput) | ±48 kHz (Doppler Shift Compensation) | 99.999% (Orbital Constellation Availability)

确定性时间敏感网络 (TSN)、微秒级确定性抖动空天 Xhaul 承载与多跳互联网格

Core Engineering Areas

IEEE 802.1Qbv Time-Aware Shaper (TAS) in Orbit — Core engineering and protocols for IEEE 802.1Qbv Time-Aware Shaper (TAS) in Orbit.
Frame Preemption (IEEE 802.1Qbu) on Optical Links — Core engineering and protocols for Frame Preemption (IEEE 802.1Qbu) on Optical Links.
Sub-Nanosecond IEEE 1588 PTP Synchronization over Orbit — Core engineering and protocols for Sub-Nanosecond IEEE 1588 PTP Synchronization over Orbit.

Technical Articles

Related Cluster Architecture Specifications

NonTerrestrialNetwork — 3GPP 5G/6G NTN Satellite Architecture, Direct-to-Cell & Non-Terrestrial Infrastructure
NonTerrestrialNetworks — Multi-Orbit Heterogeneous Constellation Interworking (LEO / MEO / GEO / HAPS)
AirspaceSync — Doppler Compensation, Relativistic Timing & Airspace-Space Synchronization
FSOComm — Free Space Optics, High-Bandwidth Space Laser Communications & Atmospheric Mitigation