Multi-link Device Association via Segmented PHY Link Setup
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Solution Overview
Problem
Existing wireless local area network (WLAN) technologies face inefficiencies in multi-link device (MLD) association, particularly in managing PHY-layer links and exchanging channel state information, which limits data rates and increases latency.
Innovation Solution
The implementation of a method for a first multi-link device (MLD) within a WLAN to associate with a second MLD on a set of PHY-layer links, involving the transmission of a response frame that associates the devices on specific PHY-layer links, thereby optimizing link setup and reducing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-link device association is implemented with multiple PHY-layer links, then data rates are improved, but device complexity increases
Solution Approach 1:
The patent segments the association process into distinct phases: receiving the association request on a first link, processing the multi-link setup, and transmitting the response on a second link. This segmentation allows complex multi-link operations to be broken down into manageable steps, improving data rates while controlling device complexity through structured processing.
Solution Approach 2:
The controller is designed to handle multiple functions within a single device: it can receive association requests, process multi-link setup information, manage PHY-layer link configurations, and transmit responses. This multi-functionality enables the device to operate across multiple links simultaneously, enhancing productivity without proportionally increasing device complexity.
2Manufacturing precision
If channel state information is exchanged between MLDs, then link setup accuracy is improved, but loss of time increases
Solution Approach 1:
The patent incorporates multi-link setup information within the association request frame itself, allowing the receiving device to have link setup information available before actual data transmission begins. This preliminary inclusion of setup information eliminates the need for separate exchange phases, improving link setup accuracy while minimizing time loss.
3Reliability
If association requests are processed with complete multi-link setup information, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent extracts multi-link setup information as a distinct element within the association request frame. By separating this critical reliability-information from the general association process, the device can process only the necessary components, improving reliability through complete information while avoiding the complexity of processing unnecessary data.
Data Source
AI summary
One example discloses a first multi-link device (MLD) within a wireless local area network (WLAN), including: a controller configured to receive a multi-link setup request for the first MLD to associate with a second MLD on a first set of PHY-layer links; wherein the controller is configured to transmit a response to the second MLD; and wherein the response associates the first MLD with the second MLD on a second set of PHY-layer links.