Multi-Link Wireless Apparatus Link Suspension
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Solution Overview
Problem
The communication characteristics of multi-link communication are deteriorated due to frame collisions, especially when hidden terminals are present or legacy terminals contend for specific frequency bands.
Innovation Solution
A wireless apparatus that acquires a communication quality index for each link in a multi-link setup and determines whether to suspend the use of the link with the lowest communication quality based on a comparison with a threshold, thereby preventing frame collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple links are established for multi-link communication, then throughput is improved, but frame collisions occur due to hidden terminals causing communication characteristics to deteriorate
Solution Approach 1:
The patent applies preliminary action by measuring communication quality indices (such as signal strength, interference levels, or collision rates) for each link before selecting which links to activate. The wireless communication device proactively identifies and suspends links with poor communication quality in advance, preventing frame collisions before they occur. This allows the system to maintain high throughput by keeping only quality links active while avoiding the reliability deterioration caused by hidden terminal problems on poor-quality links.
2Ease of operation
If carrier sense based on CSMA/CA is performed for each link, then transmission rights are acquired, but frame collisions still occur when hidden terminals are present
Solution Approach 1:
The patent implements feedback by continuously monitoring communication quality indices for each link and using this information to dynamically adjust link selection. The wireless communication device measures parameters such as signal-to-noise ratio, received signal strength indicator, or collision detection metrics, and feeds this information back to the link selection decision. When a link shows signs of poor communication quality or frequent frame collisions, the system suspends that link, thereby preventing the harmful effects of frame collisions while maintaining ease of transmission right acquisition through CSMA/CA on remaining quality links.
Data Source
AI summary
A wireless apparatus according to one aspect of the present invention includes an acquisition unit configured to acquire a communication quality index indicating communication quality of a link for each of a plurality of links forming a multi-link with another wireless apparatus; and a multi-link control unit configured to determine whether to suspend use of a first link having the lowest communication quality among the plurality of links based on comparison between the communication quality index for the first link and a first threshold.