Signal-emission control device for wireless communication network
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Solution Overview
Problem
Existing RF sensing techniques for tracking human activities introduce privacy leakage issues, as illegitimate systems can exploit RF signals for unauthorized tracking and activity recognition, and conventional countermeasures like electromagnetic shielding or signal jamming impair legitimate uses.
Innovation Solution
A signal-emission control device that modulates RF communication signal parameters based on activity states to create verisimilitude, making it difficult for illegitimate devices to correlate signal variations with actual human activities, while allowing legitimate sensing to function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RF sensing techniques are used for tracking human activities, then activity recognition capability is improved, but privacy leakage risk increases due to illegitimate systems exploiting RF signals
Solution Approach 1:
The patent applies parameter changes by dynamically modulating signal parameters (transmit power, frequency, timing) of RF communication signals based on detected activity states. This creates verisimilitude in signal variations that prevents illegitimate systems from reliably correlating signal changes with actual human activities, thereby protecting privacy while maintaining legitimate sensing functionality.
2Object-affected harmful factors
If electromagnetic shielding is used to cover private regions, then privacy protection is improved, but legitimate RF sensing capability deteriorates
Solution Approach 1:
The patent extracts the privacy protection function from physical electromagnetic shielding and implements it through virtual signal-level countermeasures. By modulating RF communication signals to create verisimilitude, the system achieves privacy protection without blocking RF signals, thereby maintaining legitimate sensing capability while preventing illegitimate exploitation.
3Object-affected harmful factors
If signal jamming is used to distort reflected signals, then illegitimate use prevention is improved, but legitimate sensing capability deteriorates
Solution Approach 1:
The patent converts the inherent variability of RF communication signals into a beneficial privacy protection mechanism. By intentionally modulating signal parameters based on activity states, the system creates verisimilitude that makes signal variations indistinguishable from natural multipath effects, thereby preventing illegitimate sensing while preserving legitimate sensing capability.
4Object-affected harmful factors
If RF communication signals are modulated to create verisimilitude, then privacy protection is improved, but signal parameter consistency deteriorates
Solution Approach 1:
The patent applies dynamics by making signal parameters adaptive rather than static. The system dynamically adjusts transmit power, frequency, and timing parameters based on real-time activity state detection, creating verisimilitude in signal variations. This dynamic approach protects privacy while maintaining communication reliability through adaptive compensation.
Data Source
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AI summary
The invention is directed to a signal-emission control device (100) for controlling emission of RF communication signals (Si) in a wireless communication network (140) that includes a transmitter device (152) and a receiver device (154). The emission is controllable with respect to a variable signal parameter (P). An emission-value ascertainment unit (102) is configured to ascertain variation-data indicative of an emission-value variation of signal-parameter values of the signal parameter. A scheduling unit (110) is configured to ascertain operation-trigger data indicative of operation conditions for triggering control of emission of the wireless RF communication signals in accordance with the ascertained emission-value. A transmitter-control unit (104) is configured to control operation of transmitter device for transmitting the communication signals (Si) according to the emission-value variation of the respective signal-parameter value upon fulfilment of the operation conditions. This enables an increase of the verisimilitude of the provided communication signals against illegitimate RF-based eavesdropping.