802.11 AP Group Assignment for MAC Rotation Pace Matching
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Solution Overview
Problem
In IEEE 802.11 wireless networks, there is no provision for access points (APs) to request specific parameters or group membership during association, leading to inefficient assignment of stations (STAs) to groups with unsuitable MAC rotation structures and paces, resulting in suboptimal network connections.
Innovation Solution
STAs provide a range of preferred MAC rotation paces, including a minimum, preferred, and maximum pace in the association request, enabling APs to efficiently assign them to suitable Enhanced Data Privacy (EDP) groups based on these preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the AP automatically assigns STAs to the default group at association time, then the association process is simple and fast, but the STA may be assigned to a group with unsuitable MAC rotation pace, resulting in connection failures or suboptimal performance
Solution Approach 1:
The STA performs preliminary action by including its minimum rotation pace requirement in the association request before being assigned to a group. This allows the AP to make an informed assignment decision that matches the STA's capabilities, preventing future connection failures while maintaining automatic assignment efficiency.
2Adaptability or versatility
If the STA specifies a minimum rotation pace in the association request, then the STA avoids being placed in an incompatible default group, but there is no provision for the AP to request specific parameters or group membership at association
Solution Approach 1:
The invention introduces new parameters (minimum rotation pace, preferred rotation pace, maximum rotation pace) into the existing association request framework. This allows the STA to express its rotation pace requirements without fundamentally changing the association protocol structure, achieving adaptability while controlling complexity.
3Adaptability or versatility
If the AP supports multiple groups with different MAC rotation structures and paces, then the system can better accommodate diverse STA requirements, but the complexity of group management and assignment increases
Solution Approach 1:
The STA performs self-service by autonomously determining and declaring its rotation pace requirements in the association request. This eliminates the need for complex AP-side evaluation and negotiation processes, allowing the AP to simply match STAs to groups based on the declared preferences, thereby reducing group management complexity.
4Ease of operation
If the STA is automatically placed in the default group without specifying rotation pace preferences, then the association process is straightforward, but network performance deteriorates due to mismatched rotation paces
Solution Approach 1:
The STA performs preliminary action by including its rotation pace preferences (minimum, preferred, maximum) in the initial association request. This maintains the simplicity of automatic assignment while enabling the AP to make performance-optimized group selections, thereby improving network performance without complicating the association process.
Data Source
AI summary
According to one aspect, a method includes establishing, by an access point (AP), a wireless communications link between the AP and a wireless station, wherein establishing the wireless communications link includes receiving a protected association request frame from the wireless station. The protected association request frame includes rotation pace preference information for randomized Media Access Control (MAC) address rotation management that indicates a preferred rotation pace. The method also includes selecting, by the AP, an Enhanced Data Privacy (EDP) group based on the rotation pace preference, the selected EDP group associated with epoch timing information for rotating wireless frame anonymization parameters at epoch transitions. A response frame that indicates the selected EDP group is transmitted to the wireless station. The AP maintains the wireless communications link with the wireless station based in part on the timing information for randomized M A C address rotation for the selected EDP group.