Wi-Fi AP Positioning via Mobile Access Point Exclusion
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Solution Overview
Problem
Current WI-FI fingerprint positioning methods suffer from low accuracy due to the inclusion of mobile WI-FI access points in the fingerprint database, which disrupt the positioning results.
Innovation Solution
A method and device that determine whether a WI-FI access point is mobile by analyzing the signal graph divergence, allowing for the identification and exclusion of mobile WI-FI access points from the database, thereby improving positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If mobile WI-FI access points are included in the fingerprint database, then the database coverage is improved, but the positioning accuracy deteriorates
Solution Approach 1:
The patent extracts and removes mobile WI-FI access points from the fingerprint database by analyzing signal graph divergence characteristics. Mobile APs are identified through their distinctive signal patterns and excluded from positioning calculations, thereby resolving the contradiction between database coverage and positioning accuracy.
2Measurement precision
If signal graph divergence analysis is performed to identify mobile APs, then the positioning accuracy is improved, but the computational complexity increases
Solution Approach 1:
The patent transforms the complex problem of mobile AP identification into a parameter-based solution by analyzing signal graph divergence characteristics. By monitoring signal strength variations across multiple reference points and calculating divergence metrics, the system efficiently identifies mobile APs without requiring complex computational models, thus improving accuracy while controlling complexity.
Data Source
AI summary
Embodiments of the present invention relate to a mobile Wi-Fi access point determining method, a Wi-Fi access point-based positioning method, a Wi-Fi AP determining device, and a Wi-Fi-based positioning device. The method includes: determining a signal graph of each of a plurality of Wireless Fidelity access points Wi-Fi APs in a positioning area; estimating a Wi-Fi AP location based on the Wi-Fi AP signal graph; determining a divergence of the Wi-Fi AP signal graph based on the estimated Wi-Fi AP location; determining, based on the divergence of the Wi-Fi AP signal graph, whether the Wi-Fi AP is a mobile Wi-Fi AP; when the Wi-Fi AP is a mobile Wi-Fi AP, deleting the mobile Wi-Fi AP from a fingerprint database; and finally determining a positioning result of an apparatus whose signal strength is obtained. Positioning accuracy is improved in the embodiments of the present invention.