Wireless Device Identity Obfuscation Against Unauthorized Sensing
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Solution Overview
Problem
Current WLAN systems face privacy and security concerns due to wireless sensing functionalities that can be exploited by attackers to invade individual and business privacy through electromagnetic wave propagation, as they can determine occupancy and location information.
Innovation Solution
Implement a method to obfuscate device identification information in wireless transmissions by using a variable association of device identification information, ensuring only authorized devices can decode the transmissions through secured communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device identification information is transmitted in wireless transmissions, then authorized devices can correctly process and identify transmissions, but unauthorized devices can perform wireless sensing to invade privacy and determine occupancy and location information
Solution Approach 1:
The patent applies dynamics by making the association between device identification information and actual device identities variable over time. The network device dynamically updates this association relationship, so that the same device identification information can correspond to different device identities at different time points. This dynamic variation prevents attackers from performing reliable wireless sensing to determine occupancy and location, while authorized devices can still correctly process transmissions by obtaining the current association mapping through secured communication.
Solution Approach 2:
The patent changes the parameter of device association mapping from static to variable. By periodically or dynamically updating which device identity is associated with a given device identification information, the system alters the fundamental parameter that attackers rely on for wireless sensing. Authorized devices adapt to these changes through secured communication channels, maintaining reliable transmission processing while undermining privacy invasion attempts.
2Object-affected harmful factors
If a variable association of device identification information is implemented to prevent unauthorized sensing, then privacy and security are improved, but authorized devices require additional secured communication to decode transmissions correctly
Solution Approach 1:
The patent applies preliminary action by having authorized devices obtain the current device identification information association mapping through secured communication before attempting to process wireless transmissions. This advance preparation ensures that when transmissions are received, authorized devices already have the correct mapping to correctly identify and process the transmissions, while attackers without access to this preliminary information cannot perform reliable sensing.
Data Source
AI summary
Based on secured communication in a wireless communication system, a wireless communication device (10, 11) determines a variable association of device identification information to one or more wireless communication devices (10, 11). Based on the determined association, the wireless communication device (10, 11) controls processing of one or more wireless transmissions comprising the device identification information.