Non-AP MLD Link Switching Without Roaming Delay
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Solution Overview
Problem
Conventional roaming technologies cause data communication delays exceeding 50 ms in AP MLDs communicating with non-AP MLDs, failing to meet the technical requirements of Wi-Fi 7, which demands delays below 5 ms.
Innovation Solution
A distributed MLD controller collects and analyzes link information from multiple AP MLDs to select an optimal target AP MLD for communication with a non-AP MLD, adjusting transmission links in a non-roaming manner to reduce delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional roaming technology is used to adjust transmission links between AP MLDs and non-AP MLDs, then link adjustment capability is provided, but data communication delay exceeds 50 ms
Solution Approach 1:
The patent segments the roaming operation into separate phases: link information collection, target AP MLD selection, and link switching. By dividing the complex roaming process into manageable segments, the system can optimize each phase independently, reducing overall delay while maintaining link adjustment capability.
Solution Approach 2:
The patent implements preliminary action by having the non-AP MLD collect link information from multiple AP MLDs in advance before actual communication begins. This pre-collection of link information enables faster target selection and link switching, reducing the delay from 50 ms to below 5 ms while avoiding the need for complete roaming operations.
2Loss of time
If conventional roaming operations (disassociation, re-association, four-way handshake) are performed, then transmission link adjustment is achieved, but communication delay increases to 50 ms or more
Solution Approach 1:
The patent extracts the essential function of link adjustment from the complete roaming operation sequence. Instead of performing full disassociation, re-association, and four-way handshake, the system extracts only the necessary link switching function, achieving the same link adjustment goal with significantly reduced delay (below 5 ms vs. 50+ ms).
Solution Approach 2:
The patent inverts the conventional roaming approach by having the non-AP MLD proactively collect link information from multiple AP MLDs simultaneously, rather than sequentially trying one AP at a time. This inversion of the traditional sequential roaming process enables parallel information gathering and faster target selection, reducing operation complexity and delay.
3Productivity
If link information is collected from multiple AP MLDs and optimal target is selected, then transmission link optimization is achieved, but system complexity increases
Solution Approach 1:
The patent introduces a distributed MLD controller as an intermediary that manages the complexity of collecting link information from multiple AP MLDs and selecting the optimal target. This intermediary absorbs the computational complexity, allowing the non-AP MLD to benefit from optimized link selection without bearing the full complexity burden, thereby improving link selection efficiency while managing system complexity.
Data Source
AI summary
The present disclosure provides a method and device non-AP MLD communication, storage medium and electronic device. The method includes: collecting, by a distributed Multi-Link Device (MLD) controller, link information of respective links from a plurality of Access Point (AP) MLDs, wherein the respective links are links between a non-AP MLD and the plurality of AP MLDs; and selecting, by the distributed MLD controller, a target AP MLD from the plurality of AP MLDs according to the link information of the respective links, and communicating with the non-AP MLD via the target AP MLD. The described technical solution solves the problem in the prior art that a long data communication delay is caused because in a case of AP MLDs communicate with a non-AP MLD, transmission links are adjusted relying on a conventional roaming technology.