Multi-Link BQR Frame Transmission for WLAN Uplink
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Solution Overview
Problem
In wireless local area networks (WLANs), existing technologies face challenges in efficiently performing uplink (UL) transmission through multi-links, particularly in allocating resources without resource conflicts and waste, especially when channel status information is not accurately reported.
Innovation Solution
The proposed method involves a transmitting station generating a frame with Bandwidth Query Report (BQR) information for a multi-link, which includes channel status information of at least one link, and transmitting this information through another link, using Flexible DL/UL (FDU) technology to support Extremely High Throughput (EHT) systems, thereby enabling efficient UL MU transmission by avoiding resource conflicts and waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If BQR information is transmitted through a single link, then the transmission process is simple, but resource conflicts occur when UL resources are allocated to busy channels
Solution Approach 1:
The patent segments the BQR information transmission across multiple links by including channel status information of at least one link in the BQR frame transmitted through another link. This segmentation allows the receiving station to obtain channel status information from multiple sources, enabling accurate identification of busy channels and preventing resource allocation conflicts while maintaining transmission process simplicity.
2Device complexity
If channel status information is not accurately reported, then the transmission process is simpler, but resource waste occurs when UL resources are allocated to busy channels
Solution Approach 1:
The patent implements feedback mechanisms where the transmitting station includes channel status information of at least one link in the BQR frame transmitted through another link. This feedback loop ensures that channel status information is accurately reported and transmitted, allowing the receiving station to make informed resource allocation decisions and prevent wasting UL resources on busy channels.
3Productivity
If multi-link operation is implemented, then bandwidth utilization increases, but resource conflicts occur when allocating UL resources across multiple links
Solution Approach 1:
The patent applies multi-functionality by enabling a single BQR frame to include channel status information from multiple links while being transmitted through just one link. This universal approach allows the system to leverage multi-link operation for increased bandwidth utilization while maintaining reliable resource allocation through comprehensive channel status information gathering across all links.
Data Source
AI summary
Proposed are a method and device for performing UL transmission through a multi-link in a wireless LAN system. In detail, a transmission STA generates a first frame including BQR information regarding the multi-link. The transmission STA transmits the first frame to a reception STA. The multi-link is a link in which first and second links are combined with each other. The BQR information regarding the multi-link includes channel state information regarding at least one of the first and second links. The first frame is transmitted through the second link.