Hybrid WLAN GPS Positioning Validation
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Solution Overview
Problem
WLAN positioning in indoor environments faces reliability issues due to incorrect database updates and power consumption concerns from frequent scanning, as well as challenges in distinguishing between malicious and innocent user registrations, leading to inaccurate positioning results.
Innovation Solution
A positioning device that combines WLAN positioning with satellite positioning to determine the reliability of WLAN positioning results by comparing them to satellite-derived position information, using a WLAN positioning calculation unit, a satellite positioning unit, a positioning result determination unit, and a positioning result adoption determination unit to ensure accurate and reliable location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent scanning of WLAN access points is performed to ensure positioning reliability, then positioning reliability is improved, but power consumption increases
Solution Approach 1:
The patent combines WLAN positioning with satellite positioning (GPS) to create a hybrid positioning system. The satellite positioning unit provides reliable position information that can be used to validate WLAN positioning results, eliminating the need for frequent scanning of WLAN access points while maintaining positioning reliability.
Solution Approach 2:
The positioning result determination unit uses satellite positioning results as feedback to validate WLAN positioning results. By comparing the two positioning results, the system can determine whether the WLAN positioning is reliable without needing to frequently scan for access points, thus reducing power consumption.
2Measurement precision
If the database of WLAN access point positions is frequently updated to maintain accuracy, then positioning accuracy is improved, but administrative complexity and potential for malicious registrations increase
Solution Approach 1:
The patent introduces satellite positioning as an intermediary validation mechanism. Instead of relying solely on database updates to maintain accuracy, the system uses satellite positioning results as an independent reference to validate WLAN positioning, thereby reducing the complexity of database management and preventing malicious registrations.
Solution Approach 2:
The patent replaces the mechanical system of frequent database updates with a computational validation system. Rather than manually updating the database, the system automatically compares WLAN positioning results with satellite positioning results to determine reliability, simplifying the overall system complexity.
3Ease of operation
If WLAN positioning is used in indoor environments, then positioning capability is provided, but positioning accuracy deteriorates due to limited visible satellites
Solution Approach 1:
The patent merges WLAN positioning and satellite positioning into a single hybrid system. The WLAN positioning calculation unit provides positioning capability in indoor environments where satellites are limited, while the satellite positioning unit provides accurate position information for validation, achieving both ease of operation and measurement precision.
Solution Approach 2:
The patent changes the parameter of positioning validation from relying solely on WLAN signal strength to using satellite positioning results as a reference. This parameter change allows the system to maintain high accuracy in indoor environments by cross-validating WLAN positioning with satellite data.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the determination of reliable WLAN positioning results, reducing power consumption and improving positioning accuracy by integrating satellite data to validate WLAN positioning, thus enhancing the reliability and precision of indoor positioning systems.
Implementation Method 1
The GPS is the positioning technology that utilizes radio waves transmitted from GPS satellites
Implementation Method 2
The WLAN positioning utilizes radio wave information from a WLAN access point
Data Source
AI summary
A positioning device for measuring a position includes a WLAN positioning calculation unit that performs first positioning, based on first radio waves from access points; a satellite positioning unit that performs second positioning, based on second radio waves from satellites; a positioning result determination unit that determines whether a positioning result by the WLAN positioning calculation unit exists within a predetermined range from position information or a measured position, based on the position information to be obtained during the second positioning by the satellite positioning unit or the measured position by the satellite positioning unit; and a positioning result adoption determination unit that determines whether the positioning result is adopted, based on a determined result by the positioning result determination unit.