NTNLocalization | 위성 네트워크 기반 3GPP Rel-17/18 사용자 단말(UE) 정밀 측위 시스템

NTNLocalization은 비지상 네트워크를 위한 3GPP 표준 위치 추적을 지정하여 확장된 타이밍 어드밴스(TA), RTT 및 위성 빔 풋프린트를 활용해 GPS가 없는 5G 장치를 찾습니다.

NTNLocalization 3GPP Location Management Function (LMF) Pipeline

Cellular positioning over satellite radio access: Multi-RTT and downlink PRS ranging

Central System: Unmodified 5G NR Smartphone - Standard 3GPP Rel-17 baseband modem

Network Nodes

  • Unmodified 5G NR Smartphone
  • LEO Spaceborne gNodeB
  • Location Management Function (LMF)
  • E911 Emergency Response (PSAP)

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)

3GPP Rel-17/18 위성 사용자 단말 위치 추적, 타이밍 어드밴스 거리 측정 및 NR-NTN

Core Engineering Areas

Technical Articles

Related Cluster Architecture Specifications