MAC Randomization with IRM Addressing for Multi-Link Recognition
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Solution Overview
Problem
Multi-link devices face challenges in being reliably recognized by access points due to the lack of support for Media Access Control (MAC) address randomization, which is crucial for privacy and security in wireless networks.
Innovation Solution
Implementing Identifiable Random MAC (IRM) addresses for multi-link devices, allowing them to transmit and receive frames with a single IRM address across multiple stations, ensuring recognition by access points during multi-link and non-multi-link operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If MAC address randomization is implemented for multi-link devices, then privacy and security are improved by preventing device tracking, but reliable recognition by access points deteriorates due to lack of support for randomization in multi-link operations
Solution Approach 1:
The patent segments the identification function by introducing a separate Identifiable Random MAC (IRM) address distinct from the randomized MAC address. While the randomized MAC address changes frequently for privacy, the IRM address remains stable for reliable recognition. This segmentation allows both privacy protection and reliable identification to coexist in the multi-link device architecture.
Solution Approach 2:
The patent introduces the IRM address as an intermediary element that mediates between the need for randomization (privacy) and the need for stable identification (recognition). The IRM address serves as a stable identifier that access points can use to recognize multi-link devices across multiple links, while the randomized MAC addresses continue to provide privacy protection in wireless frames.
2Reliability
If a single IRM address is used across multiple stations for multi-link operations, then recognition by access points is improved, but device complexity increases due to managing addresses across multiple links
Solution Approach 1:
The patent applies universality by making the single IRM address serve multiple functions across all stations and links in the multi-link device. Instead of requiring separate identification mechanisms for each link, the same IRM address is used universally across all links, simplifying address management while ensuring consistent recognition by access points throughout the multi-link operation.
3Object-affected harmful factors
If MAC address randomization is implemented, then privacy is enhanced, but network stability may deteriorate due to challenges in maintaining consistent device identity across frequency band transitions
Solution Approach 1:
The patent applies preliminary action by establishing the IRM address before multi-link operations begin. The IRM address is configured in advance and remains constant throughout frequency band transitions and link changes, ensuring device identity consistency is maintained from the outset. This preliminary establishment of a stable identifier prevents identity fragmentation during dynamic operations.
Solution Approach 2:
The patent utilizes parameter changes by allowing the MAC address parameter to change (randomization for privacy) while keeping the IRM address parameter constant (for stability). This selective parameter management enables the system to adapt to different operational requirements - using randomized addresses when privacy is needed and the stable IRM address when consistency across frequency bands is required.
Data Source
AI summary
Devices and methods provide Media Access Control (MAC) address randomization support for multi-link devices. A multi-link client device transmits an Identifiable Random Media Access Control (IRM) address of the multi-link client device to a network device. The multi-link client device generates one or more wireless frames indicating the IRM address as a physical address. The IRM address in each wireless frame identifies at least one station of the multi-link client device. The multi-link client device transmits the wireless frame(s) to the network device. The network device receives and stores a first IRM address of the multi-link client device. The network device receives at least one wireless frame indicating a second IRM address as a physical address. The network device recognizes at least one station of the multi-link client device based on a match of the second IRM address with the first IRM address.