OISLGateway | 星地高速激光下行链路与广域多云容灾地面信关站网络

OISLGateway 将星载激光下行与地面光纤网相连，采用自适应光学克服大气湍流，并通过地理分布式地面站网络规避云层遮挡。

OISLGateway Space-to-Ground Optical Downlink Architecture

Direct-to-ground 100 Gbps laser transmission with real-time deformable mirror wavefront correction

Central System: LEO Satellite Optical Terminal - 1550nm downlink laser transmitter (5W)

Network Nodes

  • LEO Satellite Optical Terminal
  • Atmospheric Boundary Layer
  • Ground Optical Receiver (OGS)
  • Terrestrial Fiber PoP

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)

星地激光高速下行、自适应光学与多云容灾地面信关站

Core Engineering Areas

Technical Articles

Related Cluster Architecture Specifications