Multi-Link Reconfiguration When Deleting a Current Link
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Solution Overview
Problem
The issue of non-Access Point (non-AP) Multi-Link Device (MLD) and Access Point (AP) MLD becoming out of sync during Multi-Link (ML) Reconfiguration operations, particularly when a current link is deleted, leading to errors in link management.
Innovation Solution
Implementing mechanisms for the AP MLD to send the Link Reconfiguration Response frame on new setup links with a matching Dialog Token, using an 'ML Reconfig Switch Time' field, and employing BSS Transition Management (BTM) requests to ensure synchronization, along with protected management frames and disassociation as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Link Reconfiguration Response frame is sent on the original link during ML reconfiguration, then the communication process is simple, but the AP MLD and non-AP MLD become out of sync when the current link is deleted
Solution Approach 1:
The patent introduces an intermediary mechanism where the Link Reconfiguration Response frame is re-sent on a different link (not the original deleted link) to ensure synchronization. This intermediary approach allows the AP MLD to communicate the reconfiguration status to the non-AP MLD through an alternative communication path, preventing the out-of-sync condition that would occur if the original link were deleted without successful acknowledgment.
Solution Approach 2:
The patent applies preliminary action by requiring the AP MLD to wait for successful acknowledgment of the Link Reconfiguration Response frame before actually deleting the original link. This ensures that both devices are synchronized on the reconfiguration status before the original link is removed, preventing the synchronization issue described in the contradiction.
2Reliability
If the Link Reconfiguration Response frame is re-sent on a different link to ensure synchronization, then reliability improves, but the communication process becomes more complex
Solution Approach 1:
The patent implements dynamics by making the link selection adaptive - the Link Reconfiguration Response frame can be sent on either the original link or a different link depending on the deletion status. This dynamic approach allows the system to automatically adjust the communication path based on current link availability, maintaining ease of operation while ensuring reliability.
3Productivity
If the original link is deleted before confirming successful reconfiguration, then resource utilization improves, but synchronization between devices is lost
Solution Approach 1:
The patent applies feedback by requiring the non-AP MLD to send an acknowledgment frame confirming successful receipt and processing of the Link Reconfiguration Response frame. The AP MLD uses this feedback to determine whether to proceed with deleting the original link, ensuring that synchronization is maintained while allowing resource optimization.
Solution Approach 2:
The patent uses preliminary action by obtaining confirmation of successful reconfiguration before deleting the original link. This ensures that the new link is fully operational and both devices are synchronized before releasing the resources associated with the original link, preventing resource loss while maintaining reliability.
Data Source
AI summary
In various embodiments described herein methods, systems, and devices for facilitating improved multi-link reconfiguration, the method includes constructing a link reconfiguration request frame, transmitting the link configuration request frame, receiving a link reconfiguration response frame, processing the received link configuration response frame, transmitting an acknowledgment frame, and transitioning link operations.