5G NR-NTN: Физический уровень New Radio и протоколы доступа для орбитальных базовых станций

NTN5G — технический авторитет по адаптации 3GPP New Radio для неназемного развертывания с упором на компенсацию эффекта Доплера, массовый случайный доступ (PRACH) и работу орбитальных gNodeB.

NTN5G System Architecture

Core architectural topology and protocol interaction of ntn5g.com

Central System: NR-NTN PHY - 3GPP TS 38.211

Network Nodes

  • Doppler Sync
  • PRACH Ext
  • HARQ Disable
  • Ephemeris TA
  • SCS 30/60kHz

Architectural Protocol Layers

  • User & Terminal Access Layer (3GPP Rel-17/18 NR-NTN & IoT-NTN): Direct communication from smartphones and IoT sensors to satellites
  • Space-Borne Radio Access (gNodeB / Transponder) (Regenerative Digital Payloads & Bent-Pipe Transparent Processing): In-orbit demodulation, digital beamforming, and spectrum channelization
  • Inter-Satellite Mesh & Space Transport (Optical Inter-Satellite Links (OISL) & 60 GHz V-Band Cross-Links): Autonomous multi-hop laser packet routing in vacuum at the speed of light
  • Ground Teleport & Core Cloud Ingress (High-Throughput Q/V-Band Gateways & Optical Ground Stations): Terabit feeder link downlinks connected directly to cloud hyperscalers

Key Metrics: 100 Gbps+ (Optical Cross-Link Bandwidth) | <25 ms (LEO Propagation Latency) | ±50 kHz (Doppler Shift Compensation) | 99.999% (Constellation Transport SLA)

Преодоление орбитальной скорости и расстояния в физическом/MAC-уровне 5G

Core Engineering Areas

Technical Articles

Related Cluster Architecture Specifications