RF Sensing Permission Authentication via Excitation Signals
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Solution Overview
Problem
Radio frequency sensing technologies lack privacy protection mechanisms, leading to potential information leakage during object detection, as they do not authenticate sensing permission before data collection.
Innovation Solution
Implementing a method where a terminal device authenticates its permission to sense a target object by sending an excitation signal and receiving feedback on sensing permission information, ensuring that sensing only occurs if permission is granted, thereby preventing unauthorized data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio frequency sensing technology is used for object detection, then sensing capability and penetrability are improved, but privacy protection deteriorates due to lack of authentication mechanisms
Solution Approach 1:
The patent implements preliminary authentication through excitation signals before actual sensing operations. The terminal device sends excitation signals to wake up the target object's communication apparatus, which then responds with authentication information. This preliminary action ensures that only authorized devices can perform sensing, preventing privacy leakage while maintaining sensing capability.
Solution Approach 2:
The patent employs feedback mechanisms where the target object's communication apparatus responds to excitation signals with feedback signals containing authentication information. The terminal device receives and verifies this feedback before proceeding with sensing operations. This feedback loop ensures that sensing permission is properly authenticated, resolving the contradiction between sensing capability and privacy protection.
2Object-affected harmful factors
If authentication mechanism is added to radio frequency sensing, then privacy protection is improved, but device complexity increases
Solution Approach 1:
The patent integrates authentication functions into existing communication apparatus components that already possess transceiving capabilities. The same communication apparatus that handles regular communication also performs authentication by sending and receiving excitation and feedback signals. This multi-functionality approach adds privacy protection without significantly increasing device complexity, as existing hardware is utilized for dual purposes.
3Object-affected harmful factors
If excitation signal authentication is implemented, then sensing permission control is improved, but time consumption increases due to additional authentication steps
Solution Approach 1:
The patent implements periodic authentication where excitation signals are sent at specific intervals to verify ongoing sensing permission. The authentication process is structured in periodic cycles rather than continuous verification, which maintains sensing permission control while minimizing time consumption. The terminal device can efficiently manage authentication timing to balance security requirements with operational efficiency.
Data Source
AI summary
A terminal device first authenticates whether the terminal device has permission to sense a to-be-measured object. If the terminal device has sensing permission, the terminal device senses the to-be-measured object. If the terminal device has no sensing permission, the terminal device does not sense the to-be-measured object. In this way, privacy leakage of the to-be-measured object is prevented.