CPE Device Identifier for MAC Randomization
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Solution Overview
Problem
The obfuscation of connected device MAC addresses due to privacy-enhancing techniques used by operating systems, such as iOS, Android, and Windows, hinders the reliable delivery of CPE-based services that depend on standardized device identifiers.
Innovation Solution
A novel device identifier is generated and associated with the active MAC address of the connected device, enabling local and/or third-party cloud-based services to rely on this identifier as a single source of truth within the CPE, thereby counteracting the effects of MAC randomization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If privacy-enhancing techniques (MAC randomization) are implemented in operating systems, then device privacy and security are improved, but reliable device identification and service delivery in CPE-based networks deteriorate
Solution Approach 1:
The patent introduces a CPE-based identification system that acts as an intermediary between the randomized MAC address and the service delivery system. The CPE captures the device identifier, associates it with the randomized MAC address, and maintains this mapping to enable reliable service delivery while preserving the privacy benefits of MAC randomization.
Solution Approach 2:
The patent creates a copy of the device identifier at the CPE level, separate from the randomized MAC address used by the operating system. This copied identifier serves as a stable reference for service delivery, allowing the system to maintain reliable device identification without exposing the actual device hardware identifier.
2Object-affected harmful factors
If MAC addresses are randomized for privacy protection, then device privacy is improved, but service management capabilities (DHCP reservations, port forwarding, firewall configurations) deteriorate
Solution Approach 1:
The CPE identification system serves as a mediator that translates between randomized MAC addresses and stable service management identifiers. It captures device identifiers, associates them with randomized MAC addresses, and maintains mappings that enable DHCP reservations, port forwarding, and firewall configurations to function reliably despite MAC randomization.
Solution Approach 2:
The system performs preliminary capture and association of device identifiers with randomized MAC addresses at the point of network connection. By establishing this mapping in advance at the CPE, the system enables subsequent service management operations to reference stable identifiers rather than relying on the randomized MAC address.
3Productivity
If standardized device identifiers (MAC addresses) are used for service delivery, then service management and optimization are improved, but device privacy and security are worsened
Solution Approach 1:
The patent introduces a CPE-based identification layer that acts as an intermediary between standardized identifiers and device privacy. The CPE captures device identifiers, associates them with randomized MAC addresses, and enables service delivery using stable references without exposing actual device identifiers, thus maintaining service efficiency while protecting privacy.
Solution Approach 2:
The system creates a copied reference of the device identifier at the CPE level that can be used for service delivery without exposing the actual device identifier. This copied reference maintains the productivity benefits of standardized identification while preventing privacy exposure that would occur with direct use of MAC addresses.
Data Source
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AI summary
A device identifier is associated (116) with an active medium access control (MAC) address of a connected device connected to a customer-premises equipment (CPE). The CPE is configured to implement a local area network (LAN) for a data communication of the connected device. The device identifier is passed (118) to a service in the CPE using a communication mechanism. The CPE is configured to implement a platform for the service. The communication mechanism is configured to operate in the CPE.