NTNSpine: 太比特天基全光主干交换网 (Spine) 与多层轨道高速互联体系

NTNSpine 架构超大容量天基空间核心脊柱通信网，将高轨、中轨与低轨星座有机联结为具备数太比特吞吐能力的太空全光骨干网，全面比肩乃至超越跨洋海底光缆。

NTNSpine Multi-Terabit Coherent Optical Orbital Backbone

Spine-and-leaf topology deployed across synchronized orbital shells with WDM laser links

Central System: LEO Access Leaf Nodes - Aggregates cellular and enterprise customer edge traffic

Network Nodes

LEO Access Leaf Nodes
MEO Optical Spine Switch
GEO Persistent Core Teleport
Centralized Space Traffic Optimizer

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)

非地面天基网络核心脊柱架构、太比特级在轨骨干网与全球星间智能路由

Core Engineering Areas

Orbital Spine-and-Leaf Clos Network Topology — Core engineering and protocols for Orbital Spine-and-Leaf Clos Network Topology.
Spaceborne Dense Wavelength Division Multiplexing (DWDM) — Core engineering and protocols for Spaceborne Dense Wavelength Division Multiplexing (DWDM).
Multi-Commodity Flow Optimization for Space Xhaul — Core engineering and protocols for Multi-Commodity Flow Optimization for Space Xhaul.

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