5G NR Positioning Measurement Reporting With LOS Filtering
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Solution Overview
Problem
In 5G New Radio (NR) positioning, the accuracy of location estimation is reduced due to the inability to distinguish between line-of-sight (LOS) and non-line-of-sight (NLOS) positioning measurement values, leading to difficulties in screening measurement values for accurate location calculation.
Innovation Solution
A measurement reporting method and device that associate positioning measurement values with line-of-sight (LOS) information, enabling the positioning server to select and use only LOS-based measurements for location calculation, thereby ensuring accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If positioning measurement values are reported without LOS information, then the reporting process is simple, but positioning accuracy deteriorates due to inability to distinguish LOS from NLOS measurements
Solution Approach 1:
The patent introduces LOS/NLOS determination information as an intermediary element that mediates between the measurement reporting device and the positioning server. This information acts as a indicator or tag that accompanies each positioning measurement value, enabling the server to distinguish between LOS and NLOS measurements without complicating the reporting process. The intermediary carries the essential classification information needed for accurate positioning while maintaining reporting simplicity.
Solution Approach 2:
The patent changes the parameter structure of the measurement report by adding LOS/NLOS determination information as a new parameter or attribute associated with each measurement value. This parameter change enables the positioning server to filter and select only LOS-based measurements for location calculation, thereby improving positioning accuracy while maintaining a straightforward reporting mechanism.
2Productivity
If all positioning measurement values are used for location calculation, then the calculation process is efficient, but positioning accuracy deteriorates due to inclusion of NLOS measurements
Solution Approach 1:
The patent applies the extraction principle by separating LOS and NLOS measurements based on the LOS/NLOS determination information. The positioning server extracts only the LOS-based measurement values from the complete set of received measurements for location calculation, while excluding NLOS measurements. This extraction ensures that only high-quality LOS measurements are used, improving positioning accuracy while maintaining calculation efficiency through automated filtering.
Solution Approach 2:
The patent implements a feedback mechanism where the positioning server uses the LOS/NLOS determination information to feedback-select which measurements to use for calculation. This feedback loop enables the server to automatically identify and utilize only the reliable LOS measurements, thereby maintaining high calculation efficiency while achieving accurate positioning results.
Data Source
AI summary
The embodiment of the application provides a measurement reporting method, a measurement reporting device and a positioning server, and the method includes the following steps: receiving a positioning measurement report request message sent by a positioning server; reporting positioning measurement related information based on the positioning measurement report request message, and the positioning measurement related information includes any one of the following items: a positioning measurement value and line-of-sight information corresponding to the positioning measurement value, a positioning measurement value satisfying line-of-sight requirements, or a positioning measurement value satisfying line-of-sight requirements and line-of-sight information corresponding to the positioning measurement value. The embodiment of the application ensures the accuracy for positioning.