Virtual Reference Measurements for Wireless Positioning
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Solution Overview
Problem
Current positioning technologies face challenges in accurately determining the location of user equipment in areas with insufficient reference measurements, such as rural or non-populated regions, leading to reduced positioning service quality and increased operational expenses for data collection and database maintenance.
Innovation Solution
The method involves generating and utilizing virtual reference measurements to supplement real measurements, allowing for accurate positioning in areas with limited data availability, by creating virtual measurements proactively or on demand, and combining them with real measurements to estimate user equipment location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real reference measurements are collected in all areas, then positioning accuracy is improved, but data collection time and operational expenses increase
Solution Approach 1:
The patent creates virtual reference measurements that replicate real measurements without requiring actual field data collection. These virtual measurements are generated through simulation or calculation and serve as substitutes for real measurements in unpopulated areas, thereby achieving positioning accuracy without the time and cost of extensive data collection campaigns.
Solution Approach 2:
The system performs preliminary generation of virtual reference measurements before actual positioning operations. By pre-computing or pre-simulating reference data for unpopulated areas, the system eliminates the need for on-demand field measurements, thus reducing data collection time and operational expenses while maintaining positioning accuracy.
2Measurement precision
If real reference measurements are collected in all areas, then positioning accuracy is improved, but operational expenses for data collection and database maintenance increase
Solution Approach 1:
Instead of collecting real reference measurements in all areas, the patent uses virtual reference measurements that copy the essential characteristics of real measurements without the associated costs. These virtual measurements are generated through simulation or calculation models, eliminating expenses related to field data collection, database storage, and maintenance while still providing accurate positioning information.
Solution Approach 2:
The patent replaces expensive, long-term maintenance of real measurement databases with cheaper, more flexible virtual measurements. These virtual measurements can be generated on-demand without requiring permanent infrastructure investment, thereby reducing operational expenses while maintaining positioning accuracy.
3Adaptability or versatility
If positioning is provided in unpopulated areas, then service coverage is improved, but positioning accuracy decreases due to insufficient reference measurements
Solution Approach 1:
The patent generates virtual reference measurements that replicate the characteristics of real measurements for unpopulated areas. These virtual measurements enable the system to provide positioning services in areas without real reference data, thereby extending service coverage while maintaining positioning accuracy through realistic simulation of measurement characteristics.
Solution Approach 2:
The system changes the state of reference measurements from real to virtual by adjusting parameters such as signal strength, timing information, and spatial distribution. These parameter transformations enable virtual measurements to accurately represent real measurement characteristics in unpopulated areas, thereby maintaining positioning accuracy while expanding service coverage.
Data Source
AI summary
Node and method in a node, for estimating a position of a user equipment. The method comprises determining the need for at least one virtual reference measurement. Further, the method comprises obtaining the at least one virtual reference measurement, when it is determined to be needed. Additionally, the method comprises estimating the position of the user equipment, using the obtained at least one virtual reference measurement.