Multi-Link WLAN Transmission Control for Non-STR Links
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Solution Overview
Problem
Existing wireless LAN standards face challenges in efficiently managing multi-link communication to support high-throughput applications like high-definition video and real-time gaming, particularly in high-density environments with multiple access points and terminals, due to limitations in simultaneous transmission and reception capabilities.
Innovation Solution
A wireless communication method and terminal that utilize a multi-link device with a processor to manage non-simultaneous transmit and receive (STR) links by determining transmission based on the status of other links, prioritizing traffic, and synchronizing transmission ends across links, while maintaining contention window values for channel access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-link communication is implemented to support high-throughput applications, then data transmission speed and reliability are improved, but device complexity and difficulty of managing simultaneous transmission and reception increase
Solution Approach 1:
The patent divides the communication system into multiple independent links (first link and second link) that can operate separately. Each link has its own transmission and reception capabilities, allowing the system to segment high-throughput communication into manageable units that can be controlled independently, thus improving overall productivity while managing complexity through modular organization
Solution Approach 2:
The patent implements dynamic control of transmission and reception operations across multiple links. The system can dynamically switch between simultaneous operation mode (when capabilities permit) and non-simultaneous operation mode (when capabilities are limited), allowing the device to adapt its complexity level based on real-time conditions while maintaining high throughput performance
2Productivity
If simultaneous transmission and reception are supported across multiple links, then communication efficiency is improved, but interference between links increases
Solution Approach 1:
The patent employs feedback mechanisms where the transmitting device monitors the operational status and capability information of the receiving device across multiple links. Based on this feedback, the system dynamically adjusts transmission parameters and timing to optimize communication efficiency while minimizing interference, ensuring that simultaneous transmission and reception only occur when the receiving device has the capability to handle it without interference
Solution Approach 2:
The patent implements preliminary anti-action by having devices exchange capability information before actual communication begins. The receiving device预先 informs the transmitting device of its simultaneous transmission and reception capabilities, allowing the transmitting device to plan and coordinate transmissions in advance to avoid interference, thus maintaining high communication efficiency while preventing harmful interference effects
3Adaptability or versatility
If multiple links are used for high-density environments, then capacity to handle multiple applications is improved, but difficulty of managing channel access and coordination increases
Solution Approach 1:
The patent creates a universal coordination framework that can be applied across different link configurations and application scenarios. The capability information exchange mechanism and simultaneous operation determination logic serve as universal functions that work regardless of the number of links or specific application requirements, thereby improving adaptability while managing coordination complexity through standardized multi-functional procedures
Solution Approach 2:
The patent implements preliminary action by having devices exchange capability information and determine simultaneous operation status before actual data transmission begins. This advance coordination allows the system to establish transmission rules and timing in advance, reducing the complexity of real-time channel access management while enabling versatile handling of multiple applications across multiple links
Data Source
AI summary
An AP multi-link device is disclosed. The AP multi-link device comprises: a transceiver; and a processor. During reception at any one link, when performing transmission at the second link to a non-AP multi-link device operating at a first link and a second link, which are non-simultaneous transmit and receive (STR) links not supported for transmission at another link, the processor determines whether to perform transmission at the second link for the non-AP multi-link device based on whether the non-AP multi-link device is transmitting to the first link.