AP Multi-Link Device Discovery via Neighbor Reports
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Solution Overview
Problem
Existing Wi-Fi systems struggle with efficient discovery of access point (AP) multi-link devices, hindering quick association of stations with appropriate APs for enhanced communication.
Innovation Solution
Implementing a method and apparatus for AP multi-link device discovery through management frames that convey information about neighbor APs, including affiliation status and BSSID sets, enabling stations to select optimal APs for association.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional neighbor report mechanisms are used in multi-link Wi-Fi environments, then stations can discover neighbor APs, but the discovery process is inefficient and stations cannot quickly identify optimal APs for association
Solution Approach 1:
The patent segments the neighbor report mechanism by introducing different report types (full neighbor reports and reduced neighbor reports) that can be selectively transmitted. Full neighbor reports provide comprehensive AP information including multi-link device affiliation status, while reduced neighbor reports provide condensed information for quick scanning. This segmentation allows stations to receive appropriate levels of detail based on their discovery needs, improving overall discovery efficiency while reducing time loss.
Solution Approach 2:
The patent implements preliminary action by having APs pre-calculate and include multi-link device affiliation status information in neighbor reports before stations need to make association decisions. The reporting AP determines whether a neighbor AP belongs to the same multi-link device and includes this pre-analyzed information in the report, allowing stations to quickly identify optimal association targets without performing additional analysis steps.
2Reliability
If comprehensive neighbor AP information is provided in management frames, then stations can make informed association decisions, but the frame size and processing complexity increase
Solution Approach 1:
The patent applies local quality by providing different levels of information detail in different contexts. Full neighbor reports include comprehensive information about multi-link device affiliation and are used when detailed analysis is needed. Reduced neighbor reports provide only essential information for quick scanning. This localized quality adjustment ensures that stations receive appropriate information depth based on their current needs, maintaining association decision accuracy while managing frame processing complexity.
Solution Approach 2:
The patent implements partial action by transmitting only the necessary subset of neighbor AP information in reduced neighbor reports. Instead of always providing complete multi-link device affiliation details, the system transmits partial information (basic neighbor AP identification) when full details are not immediately required. This partial information transmission reduces frame complexity while still enabling stations to make informed association decisions through subsequent full reports when needed.
Data Source
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AI summary
Embodiments of this application provide an access point AP multi-link device discovery method and a related apparatus, for example, are applied to a WLAN supporting 802.11be. The method includes: A reporting AP sends a first management frame to a station. The first management frame carries information about a neighbor AP, and the reporting AP is affiliated to an AP multi-link device. The reported AP indicated by the information about the neighbor AP is affiliated to the same multi-link device as the reporting AP or belongs to a same multiple BSSID set as another AP in the multi-link device to which the reporting AP is affiliated. In this case, a station receiving the first management frame can learn of a structure of an AP MLD and a structure of a multiple BSSID set. This helps the station better select an appropriate AP for association.