Radio Network Spoofing Detection via RSSI Comparison
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Solution Overview
Problem
Existing radio network systems face challenges in detecting spoofed radio terminals, as they cannot anticipate all possible operations and differentiate between authorized and unauthorized access, making it difficult to determine if a radio terminal is in an abnormal condition.
Innovation Solution
A radio network system with a central control radio apparatus and multiple connected radio apparatuses, each equipped with receiving and measuring circuits to collect and compare identification and reception information across different reception periods, determining if a radio apparatus is in an abnormal condition by comparing first and second reception information when the identification information matches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If radio communications are used for integrating sensor information and controlling actuators in manufacturing premises, then communication flexibility and ease of operation are improved, but security risk and susceptibility to eavesdropping and unauthorized access increase
Solution Approach 1:
The system performs preliminary actions by measuring and storing reception information at multiple reception periods in advance. The condition determination circuit compares reception information across different time periods to detect abnormal conditions, proactively identifying security issues before they can cause harm to the manufacturing facility.
2Difficulty of detecting and measuring
If spoofing detection methods are implemented by setting expected operations of radio terminals, then detection capability is improved, but the complexity of anticipating all possible operations increases
Solution Approach 1:
The system implements feedback by continuously measuring actual reception information and comparing it against expected patterns stored in the reception period database. The condition determination circuit provides feedback when abnormalities are detected, enabling the system to adapt and maintain security without requiring complex anticipation of all possible operations.
3Measurement precision
If multiple reception periods are measured and compared to detect spoofing, then detection accuracy is improved, but the amount of information processing and time required increase
Solution Approach 1:
The system performs preliminary measurement and storage of reception information at multiple time periods, building a reference database in advance. This allows the condition determination circuit to quickly compare current measurements against stored data without requiring complex real-time analysis, reducing processing time while maintaining high detection accuracy.
Data Source
AI summary
In a radio network system containing a first radio apparatus that performs central control and a second radio apparatus, the second radio apparatus receives a first signal containing first identification information indicating a transmission source during a first reception period, receives a second signal containing second identification information indicating a transmission source during a second reception period, measures first reception information on reception of the first signal, measures second reception information on reception of the second signal, and transmits first measurement information containing the first reception information and the first identification information and second measurement information containing the second reception information and the second identification information to the first radio apparatus. When the first identification information and the second identification information are the same, the first radio apparatus compares the first reception information and the second reception information to determine whether a radio apparatus in an abnormal condition is present.