Positioning in a non-terrestrial network

Enhanced NG-RAN signaling and Doppler-based configuration in NTN systems address the challenges of high propagation delays and TRP movements, enabling accurate and timely positioning measurements in NTN environments.

GB2629113BActive Publication Date: 2026-07-02LENOVO (SINGAPORE) PTE LTD
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Patent Information

Authority / Receiving Office
GB · GB
Patent Type
Patents
Current Assignee / Owner
LENOVO (SINGAPORE) PTE LTD
Filing Date
2022-12-15
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Existing wireless communication systems face challenges in NTN due to high propagation delays, moving TRPs, and Doppler shifts, which complicate PRS configuration, measurement, and reporting, particularly in NTN architectures like LEO and MEO satellite systems, and do not adequately address regulatory and emergency services requirements.

Method used

The proposed solution involves enhanced NG-RAN signaling and Doppler-based configuration for NTN, utilizing NR air interface to determine reference signal occasions and perform Doppler measurements, along with a new multi-RTT procedure to account for variable propagation delays, enabling accurate and timely positioning measurements.

Benefits of technology

This approach facilitates accurate and timely positioning measurements in NTN environments by accounting for satellite movements and long propagation delays, enhancing the timing of reference signal transmission and improving positioning accuracy.

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Abstract

Various aspects of the present disclosure relate to a user equipment (UE) that receives first control signaling indicating position information associated with a non-terrestrial station (NTS), the pos
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Citation Information

Patent Citations

  • Method and system for correcting reverse frequency offset of low-orbit satellite communication system

    CN112019252A

  • Location-aware "ghost" profiles in a balloon network

    WO2013181264A1

  • Secondary positioning reference signals for non-terrestrial networks in 5g new radio

    WO2021155578A1