WLAN Sounding Frame Signaling for HE and EHT RU Puncturing

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Solution Overview

Problem

Existing wireless local area networks (WLANs) face performance degradation due to increased interference from neighboring devices and the need to support diverse applications like video streaming, with real-time requirements demanding improved performance.

Innovation Solution

Implementing enhanced resource unit allocation and signaling methods in WLANs, including multi-user MIMO and MU-MIMO transmissions, HARQ schemes, and AP coordination to optimize channel access and data transmission efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple amendment devices (HE and EHT) operate in the same WLAN environment, then device versatility and application support are improved, but interference increases and performance degrades

Engineering Contradiction:

Improvedevice versatilityVSAvoidinterference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the resource allocation by introducing distinct Resource Unit (RU) allocation mechanisms for HE and EHT devices. The AP identifies device types and assigns appropriate RUs, separating the resource management for different amendments to reduce interference while maintaining versatility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by providing amendment-specific signaling and resource allocation. HE devices receive HE-specific RU allocations while EHT devices receive EHT-specific allocations, allowing each device type to operate with optimized parameters in its local context without affecting others.

Inventive Principle:

Principle #3Local quality

2Productivity

If resource units are allocated for multiple amendment devices, then application support and throughput are improved, but signaling complexity increases

Engineering Contradiction:

ImprovethroughputVSAvoidsignaling complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent creates a universal trigger frame structure that can carry both HE and EHT resource allocation information. The same trigger frame format serves multiple functions by including amendment-specific fields that can be interpreted differently based on the target device type, reducing the need for separate signaling mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent adds an amendment identification dimension to the resource allocation signaling. By including amendment type indicators in the trigger frame, the system can differentiate between HE and EHT device requirements and provide appropriate allocations without creating entirely separate signaling paths.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12563551B2Signaling method for multiplexing different amendment devices in an enhanced wireless local area network

Publication Date: 2026.02.24 AVALON TECHNOLOGY SOLUTIONS LLC

AI summary

A method for channel sounding for high efficiency (HE) and extreme high throughput (EHT) stations (STAs) includes receiving, by a station (STA), an aggregate physical layer protocol data unit (A-PPDU) from an access point (AP), the A-PPDU including an HE sounding null data packet (NDP) and an EHT sounding NDP, receiving, by the STA, a beamforming report poll frame (BFRP) from the AP, and receiving, by the STA, one or more compressed beamforming (BF)/channel quality indicator (CQI) frames. The HE sounding NDP or the EHT sounding NDP overlaps 242-tone resource units (RUs) corresponding to bits with a value of 1 in the bitmap of the TXVECTOR parameter INACTIVE_SUBCHANNELS or overlaps a punctured center 26-tone RU of an HE sounding NDP, the HE sounding NDP or the EHT sounding NDP being punctured.