Multilink Control Frame for WLAN Signal Sharing Negotiation

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Solution Overview

Problem

Legacy WLAN techniques do not support efficient communication in multiple bands, particularly lacking definitions for transmitting and receiving various information related to multilink operations between Access Points (AP) and User-Stations (STA), which hinders efficient communication in new WLAN standards supporting multiple bands like 2.4 GHz, 5 GHz, and 6 GHz.

Innovation Solution

A method is proposed where a first STA transmits a control frame with information about its preferred link and signal sharing capabilities to a second STA, followed by negotiation and data communication, enabling efficient multilink operations across different bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multilink communication is supported in new WLAN standards, then communication efficiency in multiple bands is improved, but definition of information transmission and reception between AP and STA is incomplete

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidcapability information transmission

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The capability information is segmented into two distinct parts: a first capability information indicating whether the STA supports multilink communication, and a second capability information indicating whether the STA supports signal sharing. This segmentation allows each capability to be transmitted and processed independently, resolving the information loss problem while maintaining communication efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The capability information transmission is performed preliminarily during the association phase between AP and STA, before actual data communication begins. This preliminary action ensures that both parties have the necessary capability information ready, enabling efficient multilink communication setup without information loss during the communication process.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If capability information is transmitted during association, then multilink communication setup is improved, but negotiation complexity increases

Engineering Contradiction:

Improvemultilink communication setupVSAvoidnegotiation process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The capability information is divided into separate first and second capability information fields, allowing the negotiation process to handle each capability independently. This segmentation reduces negotiation complexity by breaking down the overall capability exchange into manageable, discrete elements that can be processed separately during association.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11632817B2Method and device for transmitting information for operating station in wireless local area network system supporting multiple bands

Publication Date: 2023.04.18 LG ELECTRONICS INC

AI summary

The present disclosure relates to a method and/or device for receiving a signal in a wireless local area network (WLAN) system. A station (STA) of the present disclosure may aggregate a plurality of links including a first link and a second link. The STA of the present disclosure may transmit a frame including first information related to a preferred link and second information related to whether signal sharing is possible in the plurality of links. Information transmitted by the STA of the present disclosure may be used to appropriately signal an operating band in the WLAN system supporting a plurality of links.