Multi-Link BTM Neighbor Reports for AP MLD Transition Guidance
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Solution Overview
Problem
Existing wireless communication standards for multi-link devices (MLDs) lack efficient mechanisms for managing transitions between access point multi-link devices (AP MLDs), necessitating adjustments to basic service set transition management (BTM) protocols to facilitate discovery and recommendation of neighbor AP MLDs for seamless link establishment.
Innovation Solution
Adapting BTM protocols to include Multi-Link (ML) elements in frames, such as Neighbor Reports and link bitmaps, to recommend and mandate transitions to neighbor AP MLDs, allowing for setup of all or specific links, and incorporating preference levels for AP MLDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If BTM protocols are adapted to include Multi-Link elements for neighbor AP MLD discovery and recommendation, then link transition efficiency and network performance are improved, but protocol complexity and device complexity increase
Solution Approach 1:
The patent segments the transition management process into distinct phases: neighbor AP MLD discovery using Neighbor Report elements, transition recommendation using preference indicators, and transition execution. This segmentation allows each phase to be handled with specific protocol elements, improving efficiency while managing complexity through structured progression.
Solution Approach 2:
The patent implements preliminary action by having AP MLDs proactively send Neighbor Report elements containing Multi-Link elements to non-AP MLDs before transitions are needed. This pre-provisioning of neighbor information eliminates the need for complex real-time discovery mechanisms during actual transitions, improving transition efficiency while keeping the protocol manageable.
2Reliability
If detailed Multi-Link elements with preference levels and link bitmaps are included in BTM frames, then transition optimization and network performance are improved, but frame size and information processing requirements increase
Solution Approach 1:
The patent extracts only the essential transition management information into dedicated fields within existing BTM frames. Specifically, it uses preference indicator fields to extract AP MLD preference levels and link bitmap fields to extract recommended link configurations. This extraction approach provides detailed transition optimization while keeping frame sizes controlled by focusing on only the critical parameters needed for transition decisions.
3Adaptability or versatility
If BTM protocols are extended to support AP MLD transitions with Multi-Link elements, then adaptability to multi-link devices is improved, but compatibility with existing single-link infrastructure may be affected
Solution Approach 1:
The patent implements universality by designing the Multi-Link elements to be embedded within existing BTM frame structures. The Neighbor Report elements and preference indicators are integrated into the standard BTM workflow, allowing the same protocol framework to serve both traditional single-link operations and new multi-link transitions. This multi-functionality approach enables AP MLD transition support while maintaining compatibility with existing BTM infrastructure through unified protocol handling.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to link recommendation. A device may determine that a first STA associated with an AP MLD requires transitioning a first station device (STA) to at least one AP MLD of a plurality of AP MLDs. The device may generate a basic service set transition management (BTM) frame comprising a neighbor report element for a first AP MLD of the plurality of AP MLDs. The device may include a Multi-Link information element for the first AP MLD of the plurality of AP MLDs, wherein the Multi-Link information element is for recommending the transition of the first STA to the first AP MLD of the first AP MLD. The device may configure the processing circuitry to send the BTM frame to the first STA.