Multi-Link WLAN Frame Processing for TBTT-Based Throughput Control
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Solution Overview
Problem
Existing wireless LAN standards face challenges in efficiently managing multiple links and optimizing communication methods to support high-throughput applications, particularly in high-density environments with multiple access points, leading to inefficiencies in data transmission and reception.
Innovation Solution
A wireless communication method and terminal utilizing a multi-link device (MLD) that processes frame information with reduced neighbor reports (RNR) elements, including TBTT information fields, to optimize communication across multiple links by adjusting processing based on threshold values and offset configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple links are used to increase throughput, then communication speed is improved, but device complexity increases
Solution Approach 1:
The patent segments the wireless communication system into multiple independent links (first link and second link operating at different frequencies). Each link can be managed separately with its own parameters and protocols, allowing the system to achieve high throughput through parallel communication while maintaining manageable complexity through modular link design
Solution Approach 2:
The wireless communication terminal is designed with multi-functionality to operate across multiple links simultaneously. The terminal can select and switch between different frequency bands (2.4 GHz, 5 GHz, 6 GHz) based on environmental conditions, making a single device capable of adapting to various communication scenarios and requirements
2Productivity
If multiple links operate simultaneously, then data transmission efficiency is improved, but interference between links increases
Solution Approach 1:
The patent divides the frequency spectrum into separate bands (2.4 GHz, 5 GHz, 6 GHz) for different links. By segmenting the frequency resources, multiple links can operate simultaneously without mutual interference, as each link is confined to its designated frequency band. This allows parallel data transmission while maintaining signal integrity
Solution Approach 2:
Each wireless link is assigned specific local characteristics including dedicated frequency bands, transmission power levels, and modulation schemes optimized for that particular link. The terminal adjusts transmission parameters locally for each link based on channel conditions, ensuring optimal performance while minimizing interference to other links
3Speed
If high frequency bands are used to increase throughput, then communication speed is improved, but transmission distance is reduced
Solution Approach 1:
The patent implements dynamic link selection where the terminal can switch between different frequency bands based on the communication scenario. For short-distance high-speed communication, the system uses higher frequency bands (5 GHz, 6 GHz). For long-distance transmission, the system dynamically transitions to lower frequency bands (2.4 GHz), making the communication system adaptable to varying distance and speed requirements
Solution Approach 2:
The wireless communication terminal is designed with multi-band capability, supporting operation across 2.4 GHz, 5 GHz, and 6 GHz frequency bands. This universal design allows the terminal to leverage the advantages of different frequency bands: low frequency for long distance and high frequency for high speed, achieving both requirements through a single multi-functional device
Data Source
AI summary
A non-access point (AP) multi-link device (MLD) of the present invention, comprising a plurality of stations operating on a plurality of links in a wireless communication system, may receive a frame from an AP MLD comprising a plurality of APs, operating on a plurality of links, and may process each of one or more TBTT information fields on the basis of a TBTT information type subfield and a TBTT information length field included in the frame.