SatelliteBackhaul：キャリアグレード3GPP衛星バックホール＆エッジオフロード

SatelliteBackhaulは、大容量LEO/GEO衛星フィーダーリンクを介して、僻地の4G/5G基地局、外洋客船、離島コミュニティをキャリア品質で接続します。

SatelliteBackhaul 3GPP NR-NTN Feeder & Core Offload Topology

Direct gNodeB split architecture terminating GTP-U tunnels via LEO satellites

Central System: Remote 5G gNodeB (Cell Tower) - Standard O-RAN Distributed Unit (O-DU) at cell site

Network Nodes

Remote 5G gNodeB (Cell Tower)
Ka/Q-Band Satellite Terminal
LEO Regenerative Payload
Terrestrial 5G Core Network (5GC)

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)

キャリアグレード衛星バックホール、3GPP 5Gフィーダーリンクおよび遠隔地セルラー接続

Core Engineering Areas

OpenRAN 7.2x and Option-2 Split Over Satellite — Core engineering and protocols for OpenRAN 7.2x and Option-2 Split Over Satellite.
GTP Acceleration, Header Compression & TCP Proxy — Core engineering and protocols for GTP Acceleration, Header Compression & TCP Proxy.
Edge User Plane Function (UPF) & Local Breakout (LBO) — Core engineering and protocols for Edge User Plane Function (UPF) & Local Breakout (LBO).

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