Access Point Position Change Detection via Reference Station Monitoring
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Solution Overview
Problem
Existing Wi-Fi positioning systems are prone to errors due to delayed updates in access point positions, leading to incorrect device location determination when access points are relocated without timely database updates.
Innovation Solution
A method and apparatus for detecting position changes of access points by scanning for access stations, establishing associations between access points and reference stations, and disregarding outdated access points in positioning calculations when a position change is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If access point positions are updated manually in databases, then database accuracy is maintained, but positioning accuracy deteriorates when access points are relocated without timely updates
Solution Approach 1:
The system implements feedback by continuously monitoring the presence of reference access stations associated with access points. When a terminal device detects that an associated reference station is no longer present, it triggers an update mechanism to correct the access point position in the database, ensuring timely reflection of relocation events.
Solution Approach 2:
The system performs preliminary actions by pre-establishing associations between access points and their reference access stations before relocation occurs. This allows the system to proactively detect position changes by checking whether the expected reference stations are still present, rather than waiting for manual updates.
2Measurement precision
If access point positions are updated frequently to ensure accuracy, then positioning accuracy improves, but system complexity increases
Solution Approach 1:
The system employs self-service by enabling terminal devices to autonomously detect access point position changes and trigger updates. Each terminal device independently monitors its own positioning environment, checks for the presence of associated reference stations, and initiates database updates when changes are detected, eliminating the need for centralized frequent updates.
Solution Approach 2:
The system uses reference access stations as intermediaries to indirectly detect access point position changes. Instead of directly tracking access point locations, the system monitors the presence or absence of associated reference stations, which serve as proxies indicating whether an access point has been relocated.
3Reliability
If manual database updates are performed, then data accuracy is maintained, but productivity decreases due to delayed detection of access point relocations
Solution Approach 1:
The system implements feedback loops where terminal devices continuously report the presence of reference access stations to the positioning server. When a discrepancy is detected (e.g., an associated reference station is missing), the system automatically triggers a database update, ensuring both data accuracy and timely detection of relocations.
Solution Approach 2:
The system maintains continuous monitoring of reference station presence through ongoing scanning and association checking. This continuous action ensures that access point position changes are detected immediately upon occurrence, maintaining both data accuracy and high productivity in detecting relocations.
Data Source
AI summary
The present disclosure relates to a method and apparatus for detecting position change of an access point. According to certain embodiments, the method includes: obtaining a list of access stations scanned by a terminal device, wherein the list of scanned access stations includes the access point; and detecting the position change of the access point when the list of scanned access stations does not include a reference access station in association with the access point.