Beacon Radio Node Movement Detection for Indoor Positioning
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Solution Overview
Problem
Current location determination systems for user equipment indoors or in obstructed outdoor areas, such as those using Wi-Fi access points, are prone to third-party manipulation and lack accuracy, particularly during emergency calls, due to the mobility of these access points.
Innovation Solution
Implementing beacon radio nodes that detect movement and report it to a location service client node, which updates a database to prevent the use of outdated location data for determining user equipment location, thereby enhancing the trustworthiness of positioning services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Wi-Fi access points are used for indoor positioning, then location determination can be achieved indoors, but the mobility of access points creates vulnerability to third-party manipulation and reduces reliability
Solution Approach 1:
The system performs preliminary actions by having beacon radio nodes report their location data in advance to the location service client node, which stores this information in a database before it is needed for positioning. This pre-positioning of location data allows the system to verify the stability and authenticity of beacon locations before using them for UE positioning, thereby preventing manipulation while maintaining indoor positioning capability
Solution Approach 2:
The system implements feedback mechanisms where beacon radio nodes continuously report their location data to the location service client node, which then verifies and updates the database accordingly. This feedback loop enables the system to detect and respond to any unauthorized movements or manipulations of beacon nodes, thereby maintaining the reliability of positioning data while allowing legitimate mobility
2Measurement precision
If GPS is used for location determination, then accurate positioning can be achieved, but GPS signals cannot be received indoors or when obstructed
Solution Approach 1:
The system introduces beacon radio nodes as intermediary elements that relay location information indoors where GPS signals cannot penetrate. These beacons receive positioning data from GPS-capable devices and make it available to UEs through wireless communication, thereby bridging the gap between GPS accuracy and indoor accessibility without requiring direct GPS signal reception inside buildings
3Ease of operation
If a central database of Wi-Fi access point locations is used, then indoor positioning can be implemented, but the inherent mobility of access points heightens concern about third-party manipulation
Solution Approach 1:
The system creates verified copies of beacon radio node location data through the location service client node, which receives and stores authentic location information from beacons in a centralized database. This copying mechanism, combined with verification procedures, allows the system to maintain an authoritative reference of beacon locations that can be used for positioning while detecting and preventing unauthorized manipulations
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 improves the accuracy and reliability of indoor positioning by ensuring that only stable and non-manipulated location data is used, reducing the risk of third-party interference and enhancing emergency response capabilities.
Implementation Method 1
sensing movement of the beacon radio node based on a signal from a movement detector
Data Source
AI summary
A method in a location service client node includes maintaining a database containing a listing of beacon radio node identifiers with their geographic locations. A received location request contains an identifier for a UE and an identifier for a beacon radio node. A geographic location of the UE is determined from the database using the geographic location of the identifier for the beacon radio nodes. A message is sent to a public safety system containing the identifier for the UE and the geographic location. Subsequent to sending the message to the public safety system, a received movement notification message contains the identifier for the beacon radio node and data indicating that the beacon radio node has been moved. Data in the database is set to prevent the geographic location of the beacon radio node from being subsequently used to determine the geographic location of a UE.