AP Multi-Link Device Context Updates With Link-Specific Counters
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Solution Overview
Problem
Existing wireless communication technologies for multi-link devices (MLDs) lack efficient mechanisms to manage and communicate critical updates across multiple communication links, leading to suboptimal data throughput and operational inefficiencies.
Innovation Solution
Implementing a method and device for MLDs to generate and transmit frames with change sequence fields indicating the presence or absence of critical updates across various communication links, allowing for synchronized parameter updates and improved communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple communication links are used to improve data throughput, then data throughput is improved, but the complexity of managing and communicating critical updates across links increases
Solution Approach 1:
The patent segments the critical update indication mechanism by introducing separate change sequence counters for each communication link (first change sequence counter for first link, second change sequence counter for second link). This segmentation allows independent tracking of updates on each link, simplifying the management complexity while maintaining multi-link operation for high throughput.
Solution Approach 2:
The patent adds a new dimension to the frame structure by incorporating change sequence counters as additional fields in beacon and probe response frames. This dimensional extension enables efficient tracking of critical updates across multiple links without fundamentally complicating the existing communication protocol, thus managing complexity while supporting high throughput multi-link operations.
2Reliability
If change sequence fields are added to frames to indicate critical updates, then update synchronization is improved, but frame size and processing overhead increase
Solution Approach 1:
The patent applies local quality by making the change sequence counter indication selective rather than universal. The counters are only incremented and transmitted when actual critical updates occur on specific links, rather than continuously for all links. This localized approach ensures reliable update synchronization while minimizing unnecessary frame processing overhead when no updates are present.
Solution Approach 2:
The patent uses parameter changes in the form of change sequence counters that only change when critical updates occur. This parameter-based approach allows the system to indicate updates efficiently by changing only the necessary counter values rather than transmitting complete update sets, thereby improving synchronization reliability while reducing processing overhead compared to more extensive frame modifications.
3Measurement precision
If separate change sequence counters are maintained for each link, then update tracking accuracy is improved, but device complexity increases
Solution Approach 1:
The patent segments the update tracking function by maintaining separate change sequence counters for each communication link (first counter for first link, second counter for second link). This segmentation provides precise tracking of updates on each individual link, improving measurement accuracy while keeping device complexity manageable through modular, link-specific counter management rather than a monolithic tracking system.
Data Source
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AI summary
A first access point (AP) of an AP multi-link device (MLD) is associated with a first communication link, and one or more secondary APs of the AP MLD are associated with one or more respective secondary communication links of the AP MLD. The first AP of the AP MLD generates a frame including a first change sequence field and one or more secondary change sequence fields. The first change sequence field indicates a presence or absence of a critical update associated with the first communication link, and each of the one or more secondary change sequence fields indicates a presence or absence of a critical update associated with a corresponding secondary communication link of the AP MLD. The first AP of the AP MLD transmits the frame over the first communication link of the AP MLD to a station (STA) of a STA MLD.