Displacement Detection Server Radio Signal Analysis
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Solution Overview
Problem
Existing machine-to-machine (M2M) solutions lack efficient methods to detect stolen or misplaced wireless transceivers, particularly in large-scale M2M systems, where tampering and displacement detection are critical but not adequately addressed by current technologies.
Innovation Solution
A displacement detection server and method that analyze radio characteristics from multiple cells to detect potential displacement of wireless transceivers by comparing updated signal strengths and noise ratios over time, sending a displacement indication message to the device management server for further action, thereby reducing the need for continuous GPS location queries and managing large numbers of transceivers efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous GPS location queries are used to detect transceiver displacement, then detection reliability is improved, but resource consumption and system complexity increase significantly
Solution Approach 1:
The patent extracts the displacement detection function from the device management server and implements it at the transceiver level. Each transceiver independently monitors its own radio characteristics and determines displacement based on predefined criteria, eliminating the need for continuous GPS queries from the central server and significantly reducing resource consumption while maintaining detection reliability
Solution Approach 2:
The transceiver performs self-monitoring of radio characteristics and self-determination of displacement status. The transceiver autonomously compares current radio characteristics with historical data, identifies significant deviations, and generates displacement indications without requiring continuous external intervention, thereby reducing system resource consumption while maintaining reliable detection
2Reliability
If GPS location tracking is implemented for all transceivers, then displacement detection capability is improved, but device complexity and processing load increase
Solution Approach 1:
The patent replaces the mechanical GPS location tracking system with a radio characteristic analysis system. Instead of using GPS hardware and continuous location queries, the system uses software-based analysis of radio signal characteristics (strength, quality, cell IDs) to infer transceiver location and detect displacement, significantly reducing device complexity while maintaining detection capability
Solution Approach 2:
The system implements displacement detection by monitoring only critical radio characteristics rather than continuous full location data. By focusing on key parameters such as radio signal strength, signal quality, and cell identification, the system achieves effective displacement detection with reduced processing requirements and lower system complexity
3Measurement precision
If radio characteristics from multiple cells are analyzed, then measurement precision is improved, but calculation complexity increases
Solution Approach 1:
The system performs preliminary organization of radio characteristic data from multiple cells before displacement determination. By pre-processing and structuring the radio characteristic information, the system enables more accurate displacement detection through multi-cell analysis while keeping the actual displacement calculation relatively simple and efficient
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 3A~3B
AI summary
It is presented a method for detecting potential displacement of a wireless transceiver connected to a machine-to-machine device. The method comprises the steps, executed in a displacement detection server, of: receiving an updated radio environment message from the wireless transceiver, the radio environment message comprising updated radio characteristics of at least two radio cells, the updated characteristics being measured by the wireless transceiver; determining whether the updated radio characteristics differ significantly from previous radio characteristics of a previous radio environment message from the wireless transceiver; and when it is determined that radio characteristics differ significantly, sending a displacement indication message to a device management server, the displacement indication message indicating potential displacement of the wireless transceiver. Corresponding displacement detection server, host device, computer program and computer program product are also presented.