Timing Advance Positioning Signaling for NTN Satellite Networks
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Solution Overview
Problem
Current wireless communications systems do not support timing advance (TA)-based positioning procedures in non-terrestrial networks (NTN), leading to inadequate positioning accuracy and latency in device location determination.
Innovation Solution
Implementations provide signaling and procedural enhancements for TA-based positioning over NTN networks, including measurement reporting procedures and configuration aspects for single and multiple satellite systems, enabling accurate and efficient device location determination through TA measurements and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If TA-based positioning procedures are implemented over NTN networks, then positioning accuracy is improved, but system complexity increases
Solution Approach 1:
The positioning procedure is segmented into distinct phases: measurement configuration phase where the network provides TA measurement parameters, measurement execution phase where the UE performs TA measurements, and reporting phase where measurement reports are transmitted. This segmentation allows complex positioning functionality to be distributed across multiple manageable steps and network elements.
Solution Approach 2:
The patent introduces intermediary elements including measurement configuration messages transmitted from network to UE, and measurement report messages transmitted from UE to network. These intermediaries facilitate the TA-based positioning procedure by carrying necessary parameters and results, reducing the direct complexity between UE and network core.
2Productivity
If TA measurements and reporting procedures are implemented, then positioning efficiency is improved, but measurement reporting overhead increases
Solution Approach 1:
The patent implements partial reporting by allowing the UE to report TA measurements selectively based on configuration parameters. The measurement report includes only necessary TA measurement data and associated metadata, avoiding unnecessary transmission of complete positioning datasets. This partial action approach maintains positioning efficiency while reducing reporting overhead.
Data Source
AI summary
Various aspects of the present disclosure relate to methods, apparatuses, and systems that support TA for positioning. For instance, implementations provide a set of signalling and procedural enhancements to enable the support of timing advance (TA)-based and/or TA-assisted positioning procedures over non-terrestrial supported networks. Further, measurement reporting procedures are provided for TA-based and/or TA-assisted positioning, as well as application and configuration aspects of the procedures for both single and multiple satellite systems.