Carrier Phase Measurement Quality Indication for NR Positioning
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Solution Overview
Problem
The existing carrier phase positioning methods in NR systems lack a suitable quality indication scheme for measurement metrics, leading to low positioning accuracy and poor reliability.
Innovation Solution
An information indication method that provides quality indication information for carrier phase measurements, including carrier phase continuity, half cycle ambiguity, error indication values, error resolution, carrier signal quality, and measurement confidence levels, allowing the receiving end to assess and potentially correct or discard data with poor quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If carrier phase positioning method is used to improve positioning accuracy, then positioning precision is improved, but measurement quality assessment capability is lost
Solution Approach 1:
The patent introduces quality indication information as feedback about the measurement quality to the receiving end. This feedback mechanism allows the system to assess whether the carrier phase measurement meets the required accuracy threshold, enabling selective use of the measurement data while maintaining high positioning precision.
Solution Approach 2:
The patent performs preliminary assessment of measurement quality by calculating quality indication information before using the carrier phase measurement for positioning. This preliminary action filters out low-quality measurements in advance, preventing them from degrading positioning accuracy.
2Reliability
If quality indication information is added to measurement metrics, then measurement quality assessment is improved, but device complexity increases
Solution Approach 1:
The patent segments the quality indication into distinct components (quality indication information and measurement metrics) that can be independently calculated and transmitted. This segmentation allows for modular implementation, reducing overall system complexity while improving reliability through dedicated quality assessment.
Solution Approach 2:
The quality indication information acts as an intermediary between the measurement metric and the positioning calculation. This intermediary element provides a bridge that allows the receiving end to assess measurement quality without fundamentally changing the core positioning algorithm, thus improving reliability with minimal complexity increase.
3Stability of the object's composition
If carrier phase continuity is not maintained, then system robustness is improved, but positioning accuracy deteriorates
Solution Approach 1:
The patent uses quality indication information as feedback to detect carrier phase discontinuities. When a discontinuity is detected, the system can switch to alternative positioning methods or request re-measurement, thereby maintaining positioning accuracy while accepting reduced continuity in extreme conditions.
Solution Approach 2:
The patent changes the parameter of measurement selection based on continuity status. When carrier phase continuity is broken, the system transitions from using carrier phase measurements to other positioning methods, adapting the measurement parameter to maintain positioning accuracy under varying continuity conditions.
Data Source
AI summary
An information indication method, an information indication apparatus and a communication device are provided. The method includes: obtaining first quality indication information according to first measurement metrics; reporting the first quality indication information; wherein, the first quality indication information includes at least one of following: indication information of carrier phase continuity, indication information of half cycle ambiguity, indication information of an error indication value, indication information of an error resolution, indication information of a carrier signal quality, indication information of a quantity of error sampling points, and indication information of a measurement confidence level.