Wireless Sensing Signal Randomization Against CSI Privacy Leakage
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Solution Overview
Problem
In wireless communication systems, malicious monitoring devices can intercept and analyze sensing measurement signals, generating accurate channel state information (CSI) data, leading to user privacy leakage.
Innovation Solution
The implementation of a wireless communication method that uses a first sensing random bitstream generated based on parameters such as a first key, sequence information, and an identifier of the first sensing measurement, to secure the transmission and reception of sensing measurement signals, enhancing security and security ranging procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensing measurement signal is generated based on a known pre-defined sequence, then the sensing measurement can be performed, but malicious monitoring devices can intercept and analyze the signal to generate accurate CSI data, leading to user privacy leakage
Solution Approach 1:
The patent changes the parameter of sequence generation from a known pre-defined sequence to a random sequence generated using a random number generator. This parameter change makes it impossible for malicious monitoring devices to predict or analyze the sensing measurement signal, thereby preventing privacy leakage while maintaining the functionality of the sensing measurement system
Solution Approach 2:
The patent introduces a random number generator as an intermediary component between the sensing measurement signal generation and reception processes. This intermediary ensures that only authorized devices with the corresponding random seed can generate and interpret the signal, while preventing unauthorized devices from analyzing the signal to obtain CSI data
2Reliability
If a random bitstream is used to generate the sensing measurement signal, then security against malicious monitoring is improved, but the complexity of generating and managing the random bitstream increases
Solution Approach 1:
The patent implements self-service by having the sensing measurement device generate its own random bitstream using an internal random number generator. This eliminates the need for external random number distribution infrastructure and key management systems, thereby reducing overall system complexity while maintaining security
Solution Approach 2:
The patent applies preliminary action by generating the random bitstream in advance before the sensing measurement signal transmission. The random number generator is initialized and seeded beforehand, allowing the sensing measurement device to independently generate secure signals without requiring real-time complex computations or external coordination during the actual measurement process
Data Source
AI summary
A wireless communication method, which includes: transmitting, by a first device, a first sensing measurement signal to a second device, where the first sensing measurement signal is generated based on one or more of first parameters as follows: a first key; first sequence information; and an identifier of the first sensing measurement signal.