Multi-Link Wireless Link Prioritization Mechanism
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in multi-link communication, particularly in the Enhanced Multilink Single-Radio (EMLSR) operation mode, where non-AP Multi-Link Devices (MLDs) may choose the wrong link for transmission, leading to degraded performance due to throughput differences between active links.
Innovation Solution
Implementing a multi-link communication mechanism that prioritizes transmissions over the superior link, even when the superior link is busy and the inferior link is free, and limiting transmissions over the inferior link based on the expected busy duration of the superior link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmissions are performed over the inferior link when the superior link is busy, then transmission opportunities are maintained, but throughput is degraded due to lower link capacity
Solution Approach 1:
The patent changes the transmission parameter by dynamically selecting which link to use based on the busy duration of the superior link. When the superior link's busy duration is below a threshold, transmissions are performed over the superior link; when above the threshold, transmissions are performed over the inferior link. This parameter-based decision-making resolves the contradiction by adapting the transmission link selection to current channel conditions.
2Reliability
If transmissions are prioritized over the superior link, then throughput is improved, but transmission opportunities are missed when the superior link is busy
Solution Approach 1:
The patent introduces dynamic link selection that adapts to changing channel conditions. The system continuously monitors the busy duration of the superior link and dynamically switches between prioritizing the superior link (when busy duration is low) and utilizing the inferior link (when busy duration is high). This dynamic approach resolves the contradiction by making the transmission strategy flexible rather than static.
Solution Approach 2:
The patent implements a feedback mechanism where the busy duration of the superior link is measured and used to determine the transmission strategy. The system receives feedback about channel conditions and adjusts its transmission behavior accordingly, selecting the superior link when conditions are favorable and the inferior link when conditions are unfavorable, thus resolving the contradiction between throughput optimization and transmission opportunity utilization.
3Duration of action of stationary object
If the inferior link is used for transmission, then transmission continuity is maintained, but average throughput decreases due to lower link capacity
Solution Approach 1:
The patent changes the transmission parameter (link selection) based on the busy duration parameter of the superior link. By setting a threshold for the busy duration, the system determines whether to use the superior or inferior link, optimizing the balance between transmission continuity and average throughput based on current channel conditions.
Data Source
AI summary
For example, a non Access Point (AP) (non-AP) Multi-Link Device (MLD) may be configured to assign a first priority to a first link of a multi-link operation mode and a second priority to a second link of the multi-link operation mode. For example, the first priority assigned to the first link of the multi-link operation mode may be higher than the second priority assigned to the second link of the multi-link operation mode. For example, the non-AP MLD may be configured to limit a transmission from the non-AP MLD over the second link based, for example, on a busy state of a wireless communication medium of the first link.