Wireless LAN Access Category Control for Low-Latency Traffic

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Solution Overview

Problem

Wireless LAN systems face challenges in supporting time delay-sensitive traffic due to lower transmission speeds and interference, making it difficult to support real-time audio/video transmission effectively compared to wired environments.

Innovation Solution

A method in a wireless local area network system that involves receiving information about access types from a transmitting STA, identifying transmittable access categories, and transmitting data related to these categories to optimize network performance for time delay-sensitive traffic.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wireless LAN uses standard access categories without limitation, then general network compatibility is maintained, but time delay-sensitive traffic cannot be effectively supported

Engineering Contradiction:

Improvesupport for time delay-sensitive trafficVSAvoidaccess category flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent segments access categories into different types (first access type with first access category for time delay-sensitive traffic, second access type with second access category for other traffic). This segmentation allows differentiated handling of traffic types, enabling reliable low-latency communication while maintaining flexibility for other applications.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent dynamically configures access categories based on traffic type. The access point determines whether to apply first or second access categories based on whether the traffic is time delay-sensitive, allowing the system to adapt its behavior to current network conditions and traffic requirements.

Inventive Principle:

Principle #15Dynamics

2Productivity

If wireless LAN allows all access categories to transmit freely, then network versatility is maintained, but network performance optimization for specific traffic types cannot be achieved

Engineering Contradiction:

Improvenetwork performanceVSAvoidaccess category management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where the access point receives information about access types from transmitting stations, identifies appropriate access categories based on this information, and enforces the corresponding category limitations. This feedback loop enables automated network performance optimization without requiring complex manual configuration.

Inventive Principle:

Principle #23Feedback

3Reliability

If wireless LAN transmits time delay-sensitive traffic without access category limitation, then traffic flexibility is maintained, but transmission reliability for real-time applications deteriorates

Engineering Contradiction:

Improvetransmission reliability for real-time trafficVSAvoidaccess category configuration

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent enables self-service operation where transmitting stations automatically indicate their access type, and the access point automatically identifies and applies the appropriate access category limitations. This self-service mechanism ensures reliable transmission for real-time traffic without requiring complex manual configuration or intervention.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12414035B2Technique for performing low-latency communication in wireless LAN system

Publication Date: 2025.09.09 LG ELECTRONICS INC

AI summary

One embodiment according to the present specification relates to a method for performing low-latency communication. A receiving STA can receive information about an access type from a transmitting STA. The receiving STA can identify a transmittable access category on the basis of information about the access type. The receiving STA can transmit data about the transmittable access category to the transmitting STA.