Multi-Link Trigger Frame Identification for Timing Synchronization
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Solution Overview
Problem
In multi-link communication according to the IEEE802.11be standard, the transmission of trigger frames in each link can cause timing shifts, leading to increased interference between links.
Innovation Solution
A communication apparatus that transmits a trigger frame with identification information for a different link within a multi-link setup, ensuring synchronized data transmission across multiple channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If trigger frames are transmitted in each link simultaneously, then data transmission can be instructed in multiple links, but the STA cannot receive the trigger frames at the same time causing timing shifts
Solution Approach 1:
The patent introduces link identification information as an intermediary element within the trigger frame structure. This identifier allows the STA to distinguish which link the trigger frame belongs to, enabling the STA to process trigger frames for different links at appropriate times while maintaining overall synchronization. The intermediary identifier resolves the timing conflict by providing a reference that coordinates multi-link operations.
Solution Approach 2:
The patent segments the trigger frame transmission by associating each trigger frame with specific link identification information. Instead of treating all trigger frames uniformly across multiple links, the system divides them into link-specific segments. This segmentation allows the STA to process each link's trigger frames independently according to their respective timing requirements while maintaining coordinated operation across all links.
2Adaptability or versatility
If trigger frames are transmitted in each link, then each link can operate independently, but interference between links increases due to timing shifts
Solution Approach 1:
The patent implements a feedback mechanism where the STA uses the link identification information in received trigger frames to determine the appropriate transmission timing for each link. This feedback loop allows the system to adjust and coordinate timing across links based on actual reception conditions, reducing interference while maintaining the flexibility of independent link operation. The feedback ensures that each link's operations are synchronized with the overall multi-link strategy.
Data Source
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AI summary
A communication apparatus for wirelessly communicating with another communication apparatus, comprising: transmission means for transmitting, to the other communication apparatus, a trigger frame used as a trigger to instruct the other communication apparatus to execute data transmission in a multi-link, wherein the trigger frame includes identification information for identifying another link different from a link in which the trigger frame is transmitted in the multi-link.