Wi-Fi Initial Control and Response Frames With Feedback Padding

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Solution Overview

Problem

The introduction of additional feedback information in initial control and response frames in Wi-Fi 8 (IEEE 802.11bn) requires processing delays, necessitating the insertion of padding bits to allow receivers adequate time to process this information, which existing technologies have not adequately addressed.

Innovation Solution

Defining capability fields and processing delay rules for transmitters and receivers, including feedback types and padding to ensure timely processing of frames, especially in scenarios involving multiple feedback types and dynamic subband operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If additional feedback information is added to initial control frames and initial response frames, then the quantity of information transmitted is improved, but the processing time required increases

Engineering Contradiction:

Improvefeedback informationVSAvoidprocessing delay

Core Design Contradiction:

Loss of informationVSLoss of time

Solution Approach 1:

The patent applies preliminary action by inserting padding bits into the initial control frame and initial response frame before transmission. This pre-inserted padding provides the receiver with adequate processing time for the additional feedback information without requiring extended frame transmission time, thus resolving the contradiction between information quantity and processing time.

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If padding bits are inserted to allow processing delay, then the processing time is improved, but the frame length increases

Engineering Contradiction:

Improveprocessing delayVSAvoidframe length

Core Design Contradiction:

Loss of timeVSLength of moving object

Solution Approach 1:

The patent applies local quality by inserting padding bits only in specific locations within the frame structure - specifically in the initial control frame and initial response frame where feedback information is present. This localized padding approach provides necessary processing time without unnecessarily increasing the overall frame length across all frame types.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If capability fields are defined for multiple feedback types, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:

Improvefeedback type supportVSAvoidprocessing logic

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by defining a capability field that can indicate multiple feedback types (such as beamforming feedback, MCS feedback, etc.) within a single frame structure. This universal capability field allows the same frame format to handle various feedback types, reducing the need for multiple specialized frame structures and thereby reducing device complexity while maintaining high adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4611294A1Processing delay in initial control frame and initial response frame

Publication Date: 2025.09.03 INTEL CORP

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AI summary

This disclosure describes systems, methods, and devices related to enhanced processing delay. A device may generate a frame comprising one or more fields. The device may include a capability element to allow an ultra high reliability (UHR) receiving station device (STA) to indicate a feedback type that is supported by the receiving STA. The device may generate a number of padding bits to be added to the frame, wherein the number of padding bits is based on the feedback type. The device may cause to send the frame to the receiving STA.