Soft AP Band Classification for Non-Interfering Wi‑Fi BSSs

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Solution Overview

Problem

Existing wireless communication systems waste frequency bands due to inefficient utilization when EHT STAs operate as Soft APs, leading to suboptimal spectrum utilization and throughput.

Innovation Solution

EHT STAs functioning as Soft APs determine and transmit message frames indicating their support for a soft access function, and receive frames from surrounding devices to collect frequency band information, allowing for the establishment of Basic Service Sets (BSSs) in non-interfering frequency bands to optimize spectrum utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If EHT STAs operate as Soft APs in traditional wireless communication systems, then device connectivity and network coverage are improved, but frequency spectrum utilization deteriorates due to inefficient utilization of available frequency bands

Engineering Contradiction:

Improvenetwork coverageVSAvoidfrequency spectrum utilization

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent segments the available frequency spectrum into multiple frequency bands and establishes separate Basic Service Sets (BSSs) in each band. The Soft AP device classifies surrounding stations based on their supported frequency bands and creates non-interfering BSSs in different bands, thereby improving frequency spectrum utilization while maintaining network coverage.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If EHT STAs function as Soft APs without frequency band classification, then device compatibility is improved, but throughput deteriorates due to suboptimal spectrum utilization

Engineering Contradiction:

Improvedevice compatibilityVSAvoidthroughput

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent segments stations into different categories based on their supported frequency bands. The Soft AP device performs classification of surrounding stations and establishes separate BSSs in non-interfering frequency bands, enabling simultaneous communications in multiple bands and thereby improving throughput while maintaining device compatibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces frequency band dimensionality to the network architecture by establishing BSSs across multiple frequency bands simultaneously. This dimensional expansion allows the Soft AP to communicate with different stations in different frequency bands at the same time, significantly improving throughput while maintaining compatibility with various device types.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12593320B2Communication method and communication device

Publication Date: 2026.03.31 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A communication method is performed by a first device, and includes: determining and transmitting a first message frame, wherein the first message frame includes information for indicating that the first device that transmits the first message frame supports a soft access function; and receiving a second message frame, wherein the second message frame includes frequency band information supported by a second device around the first device.