Privacy Gateway for Cellular Identity Anonymization
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Solution Overview
Problem
Current cellular architecture lacks effective measures to protect user identity and location privacy, as it relies on unique identifiers like IMSI for authentication and tracking, leading to widespread surveillance and data leakage by carriers.
Innovation Solution
The implementation of a cellular architecture that decouples authentication and billing from network connectivity, using a Next Generation Core (NGC) with a Privacy Gateway to authenticate devices with identical or algorithmically generated IMSIs, and leveraging Tracking Area Lists (TALs) to increase location anonymity, while maintaining compatibility with existing infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cellular architecture uses unique identifiers like IMSI for authentication and tracking, then network connectivity and device identification are enabled, but user identity and location privacy are compromised
Solution Approach 1:
The patent segments the identifier system into multiple components: permanent identifiers (IMSI) stored securely in the USIM card, temporary identifiers (TID, GUTI) used for network communication, and location area identifiers (LAI, TAC). This segmentation allows the network to track connectivity without permanently linking identifiers to user identity, resolving the contradiction between reliable device identification and privacy protection.
Solution Approach 2:
The patent introduces the Home Location Register (HLR) and Visitor Location Register (VLR) as intermediary components that mediate between the permanent IMSI and temporary identifiers. These intermediaries enable the network to maintain connectivity tracking while preventing direct exposure of permanent user identifiers, thus protecting privacy while ensuring reliable network operation.
2Ease of operation
If cellular networks implement location tracking for connectivity management, then network service quality is improved, but user location privacy is lost
Solution Approach 1:
The patent implements local quality by using different identifier types in different network contexts: temporary identifiers (TID, GUTI) are used in the radio access network and core network for location management, while the permanent IMSI is only accessed in the home network's HLR. This contextual differentiation allows location tracking for service quality without permanently exposing user identity, thus protecting location privacy while maintaining service quality.
3Productivity
If carriers have access to bulk user location data, then network management and billing are facilitated, but widespread surveillance and data leakage occur
Solution Approach 1:
The patent implements dynamic identifier assignment where temporary identifiers (TID, GUTI) are periodically updated and reassigned by the network. This dynamic approach allows carriers to maintain efficient network management and billing through the VLR's location tracking, while the frequent rotation of temporary identifiers prevents long-term surveillance and reduces data leakage risks, thus resolving the contradiction between management efficiency and harmful surveillance.
Data Source
AI summary
According to various embodiments, a cellular architecture for enhanced privacy regarding identity and location of a computing device is disclosed. The architecture includes a next generation core (NGC). The NGC includes an authentication server function (AUSF) configured to determine whether the computing device contains a valid subscriber identity module (SIM) card, and a user plane function (UPF) configured to allow a computing device to connect to the Internet. The architecture further includes a gateway connected to the UPF, the gateway configured to authenticate the computing device while hiding the identity of the computing device by verifying authentication tokens that represent units of access.