Puncture Information in WLAN Trigger Frames for TB PPDU Encoding

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Solution Overview

Problem

IEEE 802.11 standards do not include puncture information in trigger frames for Trigger Based (TB) Physical Layer Protocol Data Units (PPDUs, leading to inconvenience in data encoding.

Innovation Solution

Generate a trigger frame with puncture information for TB PPDUs to facilitate data encoding and resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If trigger frame follows IEEE 802.11 standards without puncture information, then standard compatibility is maintained, but data encoding convenience deteriorates

Engineering Contradiction:

Improvedata encoding convenienceVSAvoidtrigger frame structure

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by including puncture information in the trigger frame before the TB PPDU transmission occurs. This allows the receiving device to pre-process and prepare for punctured resource units, simplifying the subsequent data encoding process rather than handling puncture decisions during transmission

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent segments the trigger frame structure by adding a dedicated puncture information field that separately identifies punctured resource units. This segmentation allows the system to maintain standard compatibility while providing enhanced functionality for puncture indication without disrupting the existing trigger frame framework

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If puncture information is added to trigger frame, then data encoding is simplified, but trigger frame complexity increases

Engineering Contradiction:

Improvedata encoding processVSAvoidtrigger frame structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies local quality by adding puncture information specifically to the resource allocation portion of the trigger frame where it is most needed for data encoding. Rather than redesigning the entire trigger frame structure, the solution locally enhances the resource unit description fields to include puncture status indicators

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent achieves universality by designing the puncture information field to work with existing trigger frame formats and resource allocation mechanisms. The added puncture indicators can be integrated into various trigger frame types (Basic Trigger, MU-RTS, etc.) without requiring separate protocols for different scenarios

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12425131B2Method and apparatus used in WLANs

Publication Date: 2025.09.23 INTEL CORP

AI summary

The application relates to puncture indication used in wireless local area networks (WLANs), and in particular provides a method, including: generating a trigger frame including puncture information for a Physical Layer (PHY) Protocol Data Unit (PPDU); and transmitting the trigger frame to a User Equipment (UE) to trigger the UE to transmit the PPDU.