Roadside Positioning Accuracy via Wireless Signal Calibration
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Solution Overview
Problem
Existing positioning systems struggle to precisely determine which side of a road a user is located on, especially when the road is narrow, due to positioning deviations.
Innovation Solution
A roadside positioning method that combines positioning information from a user terminal with wireless signal information to accurately determine the side of the road the user is on, using a trained roadside positioning model.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If GPS positioning information is used alone to determine user location, then the positioning system is simple to operate, but the positioning precision deteriorates on narrow roads causing inability to determine which side of the road the user is on
Solution Approach 1:
The patent combines GPS positioning information with wireless signal information (WiFi, base station signals) to determine user location. By merging multiple positioning data sources, the system maintains ease of operation while achieving precise roadside determination even on narrow roads where GPS alone would be insufficient.
2Loss of time
If GPS positioning is used without additional calibration, then the positioning process is quick, but positioning deviation occurs on narrow roads making roadside determination impossible
Solution Approach 1:
The system performs preliminary calibration by collecting wireless signal information at known GPS coordinates in advance. This pre-collected data is stored and later used to correct GPS positioning deviations, enabling accurate roadside determination without adding significant time to the positioning process.
Solution Approach 2:
The system uses collected wireless signal information as feedback to calibrate and correct GPS positioning data. By comparing expected wireless signal patterns with actual measurements, the system identifies and corrects positioning deviations, maintaining both speed and accuracy.
3Device complexity
If only GPS positioning data is collected, then the data collection process is simple, but the positioning deviation prevents accurate determination of user's roadside location
Solution Approach 1:
The system uses the user terminal's existing wireless communication capabilities (WiFi, base station reception) for positioning calibration. These multi-functional components serve both their primary communication purposes and the additional function of providing calibration data for accurate roadside determination, without requiring specialized dedicated hardware.
Data Source
AI summary
A roadside positioning method includes: obtaining positioning information of the user terminal, the positioning information being used for indicating a geographic location of the user terminal; obtaining wireless signal information of the user terminal, the wireless signal information being used for indicating wireless signals acquired by the user terminal at the geographic location; and determining a roadside positioning result of the user terminal based on the positioning information and the wireless signal information, the roadside positioning result being used for indicating a roadside on which the user terminal is located.