Dynamic QoS Signaling via A-Control Field Updates

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Solution Overview

Problem

Current Wi-Fi QoS signaling methods are inefficient for dynamic and high-rate changes in traffic flow, leading to high overhead and latency in exchanging quality of service information, particularly in applications like Extended Reality that require fast and reliable data transmission.

Innovation Solution

The introduction of a dynamic QoS system that enhances signaling by adding a stream classification service identification field, updated QoS parameters, and launch time information in the A-Control field of 802.11 frames, allowing for faster and lower overhead signaling of QoS parameters across multiple users.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If current Wi-Fi QoS signaling methods are used, then QoS information can be exchanged between devices, but the overhead and latency are high for dynamic traffic flow changes

Engineering Contradiction:

ImproveQoS signaling reliabilityVSAvoidQoS information exchange latency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements dynamic QoS parameter updates by allowing stations to send QoS information in data frames rather than requiring separate management frames. The QoS field in the data frame header can be dynamically modified to reflect current traffic flow requirements, enabling real-time adaptation without the latency of traditional periodic signaling

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent establishes QoS parameters in advance through stream classification service setup, where QoS requirements are pre-configured for different traffic streams. This preliminary configuration allows the system to quickly adapt to dynamic changes by simply updating the pre-established QoS fields in subsequent data frames, rather than negotiating QoS parameters in real-time

Inventive Principle:

Principle #10Preliminary action

2Loss of information

If current Wi-Fi QoS signaling methods are used, then QoS parameters can be communicated, but the signaling overhead is high for dynamic applications

Engineering Contradiction:

ImproveQoS parameter communication completenessVSAvoidSignaling overhead

Core Design Contradiction:

Loss of informationVSLoss of substance

Solution Approach 1:

The patent merges QoS signaling with data transmission by incorporating QoS parameters directly into the data frame header. Instead of using separate management frames for QoS negotiation and updates, the same data frames that carry user traffic also carry QoS information, eliminating redundant signaling overhead while maintaining complete QoS parameter communication

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The data frame structure is enhanced to serve multiple functions simultaneously: it carries user data, QoS parameters for stream classification, and scheduling information. This multi-functionality allows a single frame to accomplish what previously required multiple specialized frames, significantly reducing signaling overhead for dynamic QoS updates

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20230422305A1Mechanism to signal dynamic quality of service requirements for next generation ultra-high reliability wi-fi

Publication Date: 2023.12.28 INTEL CORP

AI summary

This disclosure describes systems, methods, and devices related to dynamic quality of service (QoS). A device may establish a stream classification service (SCS) identified by an SCS identification (SCSID). The device may generate a frame comprising an A-Control field to be sent to one or more station devices (STAs). The device may modify the A-control field to comprise one or more parameters associated with the SCS stream. The device may cause to send the frame to the one or more STAs.