FA PPDU Configuration for Multi-STA Trigger-Based Wi-Fi

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Solution Overview

Problem

Existing Wi-Fi networks face inefficiencies when EHT devices coexist with HE and legacy devices, as EHT access points struggle to efficiently receive PPDUs from multiple stations, leading to reduced throughput.

Innovation Solution

The configuration of frequency domain aggregated (FA) physical layer protocol data units (PPDUs) for trigger-based PPDUs, utilizing trigger frames to allocate resources and specify configurations for multiple stations, allowing simultaneous transmissions by EHT and HE stations, with bandwidth adjustments and masking to reduce interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If EHT AP receives single PPDU from each connected STA, then device compatibility is maintained, but throughput efficiency deteriorates

Engineering Contradiction:

Improvedevice compatibilityVSAvoidthroughput efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent combines multiple individual PPDUs into a single aggregated FA PPDU that can be received from multiple STAs simultaneously. The access point merges data from multiple HE and legacy STAs into one frequency domain aggregated PPDU structure, enabling efficient multi-station communication while maintaining compatibility across different device types.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The FA PPDU structure is designed to universally accommodate multiple types of STAs (EHT, HE, and legacy devices) within a single transmission framework. The aggregated PPDU can handle different device capabilities and requirements simultaneously, making the system multi-functional and adaptable to various device types without requiring separate reception mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If multiple STAs transmit simultaneously without aggregation, then transmission simplicity is maintained, but resource utilization deteriorates

Engineering Contradiction:

Improvetransmission simplicityVSAvoidresource utilization

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

Multiple individual transmissions are merged into a single aggregated FA PPDU structure. The patent combines data from multiple STAs into one unified transmission unit, improving resource utilization by reducing overhead and enabling more efficient use of the wireless medium while maintaining operational simplicity through centralized aggregation management.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4090119B1Configuration of FA PPDU for TB ppdu

Publication Date: 2025.09.17 INTEL CORP

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AI summary

The disclosure provides techniques for a configuration of frequency domain aggregated (FA) physical layer protocol data unit (PPDU) for trigger based (TB) PPDUs. An apparatus for an access point (AP) includes a radio frequency (RF) interface; and processing circuitry coupled with the RF interface. The processing circuitry is configured to: encode a trigger frame to be transmitted via the RF interface to stations (STAs) communicatively connected with the AP, wherein the trigger frame includes signaling to indicate a configuration of frequency domain aggregated (FA) physical layer protocol data unit (PPDU) for at least two STAs; and decode an FA PPDU aggregated by composite trigger based (TB) PPDUs from the at least two STAs.