Obfuscating Location References in Fingerprint Data

The patent introduces an intermediary obfuscation layer between the original location references and the transmitted fingerprint data. Translation parameters act as a mediator that transforms location references into obfuscated forms, allowing data to be transmitted across countries while maintaining privacy protection. The intermediary layer enables both international collaboration and privacy compliance simultaneously.

The patent changes the parameters of location references by applying translation and rotation transformations. These parameter changes convert the original location data into obfuscated forms that cannot be directly interpreted, thereby protecting privacy while preserving the functional utility for radio map generation. The transformed parameters maintain spatial relationships necessary for positioning accuracy.

The patent creates a universal obfuscation mechanism that can be applied across all countries and jurisdictions. A single obfuscation system with translation parameters serves multiple functions: it protects privacy, enables international data sharing, and complies with various exportation bans simultaneously. This eliminates the need for separate country-specific servers while maintaining privacy protection.

Instead of deploying physical copies of servers in each country, the patent creates a logical copy through mathematical transformation. The obfuscation function replicates the privacy protection capability across all jurisdictions without requiring duplicate infrastructure. The translation parameters serve as a virtual copy that maintains privacy properties throughout the data lifecycle.

The patent implements feedback mechanisms where the obfuscation parameters are carefully calibrated and adjusted based on the requirements of positioning accuracy. The translation and rotation parameters are not fixed but can be adapted to maintain sufficient positioning precision while achieving the desired level of privacy protection. Feedback loops ensure that obfuscation does not excessively degrade measurement quality.

The patent applies different obfuscation strengths and parameter transformations to different parts of the data based on their sensitivity and importance. Critical location references receive stronger obfuscation, while less sensitive data may use lighter transformation. This local quality approach ensures that privacy protection is maximized where needed while minimizing impact on positioning accuracy for critical measurements.