Multi-AP Selective Association for Secure Roaming Control
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Solution Overview
Problem
Existing wireless communication networks lack the ability to selectively control which stations can associate with access points in multi-AP associations, leading to potential congestion, security risks, and inefficient resource utilization.
Innovation Solution
Implementing a mechanism for wireless communication devices to transmit and receive frames with an information element indicating selective association, allowing only authorized stations to connect, thereby enabling controlled access and optimizing network resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all stations are allowed to associate with any access point in a multi-AP network, then network coverage and accessibility are improved, but network congestion and security risks increase
Solution Approach 1:
The patent implements selective association by AP ID, where each access point has customized association rules that apply locally to specific STAs. This allows different parts of the multi-AP network to have different access control policies, enabling authorized STAs to freely associate with any AP while restricting unauthorized access, thereby maintaining network accessibility without causing congestion.
Solution Approach 2:
The system performs preliminary filtering of association requests by checking whether a STA is authorized to associate with a target AP before allowing the association to proceed. This advance verification prevents unauthorized STAs from consuming network resources, thus avoiding network congestion while maintaining open access for authorized devices.
2Area of stationary object
If all stations can associate with any access point, then network coverage is extended, but security risks increase
Solution Approach 1:
The patent applies different association rules to different AP-STA pairs within the multi-AP network. Each AP can enforce security policies locally based on STA authorization status, allowing the network to maintain broad coverage while applying security controls selectively at each access point.
Solution Approach 2:
The system introduces an intermediary authorization check mechanism that mediates between the STA's association request and the AP's acceptance. This intermediary layer verifies whether the STA is authorized to associate with the target AP, thereby extending network coverage to authorized devices while blocking unauthorized access and maintaining security.
3Reliability
If selective association control is implemented at each access point, then network security and resource optimization are improved, but system complexity increases
Solution Approach 1:
The association authorization check is performed as a preliminary step in the association process, before full association is established. This preliminary filtering simplifies the overall system architecture by handling security and resource control at the association stage, rather than requiring complex ongoing management mechanisms.
Solution Approach 2:
Each access point autonomously enforces selective association rules based on its configured authorized STA list. The AP independently determines whether to accept or reject association requests without requiring complex inter-AP coordination or centralized control, thereby improving security while keeping system complexity manageable through decentralized self-service operation.
Data Source
AI summary
This disclosure provides methods, components, devices and systems for selective association for extended single mobility domain (SMD) networks. Some aspects more specifically relate to signaling mechanisms according to which an access point (AP) may limit which stations (STAs) are able to roam to the AP in examples in which the AP is part of an SMD, which may be referred to as a multi-AP association. Such a limitation on which STAs are able to roam to the AP may be referred to as a selective association at the AP and, in some examples, the AP may transmit a frame that includes information indicative of the selective association at the AP. For example, the AP may transmit a frame that includes an information element indicative of the selective association at the AP. The information element may include an indication of one or more STAs allowed to associate with the AP.