Virtual Phase Integer Ambiguity Resolution for Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for determining integer ambiguity in carrier phase measurement values for positioning in wireless communication systems are time-consuming and difficult to implement effectively.
Innovation Solution
A positioning method that involves determining virtual phase measurement values from multiple Carrier Phase Positioning Reference Signals (C-PRS) and Time of Arrival (TOA) measurements to quickly and accurately calculate the integer ambiguity, allowing for precise location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current methods are used to determine integer ambiguity in carrier phase measurement values, then positioning can be performed, but the process is time-consuming and difficult to implement effectively
Solution Approach 1:
The patent performs preliminary actions by determining TOA measurement values and virtual phase measurement values before the actual positioning calculation. By pre-processing the measurement data and establishing the relationship between TOA and phase measurements, the system reduces the computational burden during the final positioning step, thereby speeding up the overall process while maintaining accuracy.
Solution Approach 2:
The patent introduces virtual phase measurement values as an intermediary between raw carrier phase measurements and the final positioning result. These virtual phase values serve as a bridge that simplifies the determination of integer ambiguity by providing a standardized reference framework, making the complex ambiguity resolution process more manageable and faster.
2Measurement precision
If carrier phase measurement values are used for positioning, then high positioning accuracy can be achieved, but the integer ambiguity determination is complex and time-consuming
Solution Approach 1:
The patent transforms the complex carrier phase measurement parameters into virtual phase measurement values with simplified characteristics. By changing the parameter representation and establishing a standardized reference system, the patent maintains the high precision benefits of carrier phase measurements while reducing the complexity of the associated ambiguity determination process.
Solution Approach 2:
The patent introduces virtual phase measurement values and standardized reference signals as intermediaries between the raw carrier phase measurements and the final positioning calculation. This intermediary layer simplifies the mathematical relationships and reduces the complexity of determining integer ambiguity, making the process more tractable while preserving measurement precision.
3Measurement precision
If multiple C-PRS signals are processed to determine virtual phase measurement values, then positioning accuracy improves, but processing time increases
Solution Approach 1:
The patent merges multiple C-PRS signal processing operations into a unified virtual phase measurement framework. By combining the measurement and calculation steps for multiple signals into an integrated process with a standardized reference system, the patent achieves the accuracy benefits of processing multiple signals while reducing the overall processing time through operational consolidation.
Data Source
AI summary
A positioning method and device used for solving the problems of the existing method for determining an integer ambiguity being relatively difficult and relatively time-consuming. During positioning, the method includes a receiving device determining a virtual phase measured value according to at least two received C-PRS signals (600); determining a TOA measured value according to a received PRS signal (601); determining a virtual integer ambiguity according to the TOA measured value and the virtual phase measured value (602); and finally, determining the location of the receiving device according to the virtual integer ambiguity (603). An integer ambiguity search space is reduced, and the integer ambiguity is determined faster, thus improving the efficiency of determining the location of the receiving device.