MRU Allocation in Trigger Frames for Flexible Wi-Fi Bandwidth

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Solution Overview

Problem

In wireless local area networks, non-access point stations often occupy an entire channel for data transmission, leading to reduced frequency utilization efficiency, and there is a need for efficient allocation of multiple resource units to stations with varying data requirements.

Innovation Solution

A method for allocating multiple resource units (MRUs) to non-access point stations using a trigger frame with a frequency band range indication and resource unit indication, allowing flexible allocation and reducing the number of indexes required for indication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a non-access point station occupies an entire channel for data transmission, then the station can send data without complex resource allocation, but frequency utilization efficiency is greatly reduced

Engineering Contradiction:

Improveease of data transmissionVSAvoidfrequency utilization efficiency

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The channel is divided into multiple resource units (RUs) of different sizes (26-tone, 52-tone, 106-tone, 242-tone, 484-tone, 996-tone RUs). This segmentation allows multiple stations to simultaneously access different frequency resources, improving frequency utilization while maintaining simple transmission procedures for each station.

Inventive Principle:

Principle #1Segmentation

2Quantity of substance

If multiple resource units are allocated to a station with large data requirements, then the station can transmit more data, but the number of indexes required for indication increases

Engineering Contradiction:

Improvedata transmission capacityVSAvoidnumber of indexes for indication

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

Multiple resource units are nested combined to form a multi-resource unit (MRU). Instead of indicating each RU separately with individual indexes, the MRU is indicated as a single unified resource, reducing the number of indexes required while allowing stations to access multiple RUs for large data transmissions.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Ease of operation

If traditional resource unit allocation methods are used, then the indication process is simple, but flexible allocation of multiple resource units to stations is not achieved

Engineering Contradiction:

Improvesimplicity of indication processVSAvoidflexible allocation capability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system dynamically allocates resource units based on station requirements. The AP can flexibly combine multiple RUs into an MRU and allocate it to any station that needs larger bandwidth, while still maintaining a simple indication process through unified MRU indexing. This dynamic allocation adapts to varying data requirements of different stations.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12426026B2Resource unit indication method, access point, and station

Publication Date: 2025.09.23 HUAWEI TECH CO LTD

AI summary

This application describes resource unit indication methods, access points, and a stations. In an example method, a resource unit allocation subfield in a trigger frame includes a frequency band range indication and a resource unit indication. The resource unit indication is used to indicate a multiple resource unit (MRU) allocated to a station. The frequency band range indication is used to indicate a frequency band range in which a resource unit (RU) in the MRU is located. For example, the frequency band range indication is used to indicate 80 MHz in which a smallest RU in the MRU is located. The described techniques can be applied to, for example, 802.11ax, 802.11be, and future Wi-Fi systems.