Radio Node Database for Spoofing Detection in Positioning Systems
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Solution Overview
Problem
Non-GNSS based radio positioning systems are vulnerable to manipulation techniques such as spoofing and jamming, which can deceive mobile devices into determining incorrect positions, posing a threat to business models relying on trustworthy positioning.
Innovation Solution
A method involving a database that identifies potentially manipulated radio signals and nodes, allowing mobile devices to maintain a record of affected areas and nodes under spoofing, jamming, or meaconing influence, and taking actions to prevent fraudulent position estimates by blocking affected radio nodes and frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-GNSS based radio positioning systems are used for indoor positioning, then positioning capability is provided indoors, but the system becomes vulnerable to manipulation techniques such as spoofing and jamming
Solution Approach 1:
The system performs preliminary actions by collecting radio fingerprint observation reports during a training stage before actual positioning occurs. These reports are used to generate radio models that describe expected signal characteristics, enabling the system to detect anomalies during subsequent positioning operations.
Solution Approach 2:
The system implements feedback mechanisms where mobile devices continuously report observed radio signal characteristics to a server. This feedback loop enables the system to update radio models with actual measurements, allowing detection of manipulated signals by comparing expected versus actual signal patterns.
2Measurement precision
If radio fingerprint observation reports are collected from mobile devices, then positioning accuracy is improved, but device resources are consumed during the crowd-sourcing process
Solution Approach 1:
The system applies partial action by selectively collecting radio fingerprint observation reports only when necessary for positioning improvements, rather than continuously. The crowd-sourcing process is activated only when positioning accuracy needs enhancement, reducing unnecessary device resource consumption while maintaining positioning quality.
Solution Approach 2:
The system changes parameters by adjusting the frequency and intensity of radio fingerprint collection based on positioning needs. During normal operation, the system may reduce collection intensity while maintaining sufficient accuracy through optimized sampling rates and selective report gathering.
3Productivity
If manipulated radio signals are used for positioning, then positioning service is provided, but fraudulent position estimates are generated
Solution Approach 1:
The system converts harmful manipulated signals into beneficial detection opportunities by analyzing signal characteristics against established radio models. Anomalies in manipulated signals are detected by comparing expected versus actual signal patterns, allowing the system to identify and reject fraudulent position estimates while maintaining legitimate positioning services.
Solution Approach 2:
The system introduces intermediary verification mechanisms where radio signal observations are compared against reference radio models before being used for positioning. This intermediary check acts as a filter that blocks manipulated signals from directly affecting position estimates, ensuring only verified accurate measurements are used.
Data Source
AI summary
A method is disclosed that includes maintaining a database comprising identifying information indicative of one or more radio nodes and/or of one or more areas within which the one or more radio nodes are located. Each respective radio node of the one or more radio nodes is configured to enable positioning based on radio signals sent by the respective radio node. The positioning enabled by the respective radio node is considered to be at least partially unexpected. A corresponding apparatus, computer-readable storage medium and system are also provided.