Multi-Channel Wi-Fi Connection Control Under Interference

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Solution Overview

Problem

Existing wireless communication systems face challenges in managing connections across multiple frequency channels, particularly in the IEEE 802.11be standard, where interference can disrupt disconnection requests, leading to ineffective control of connections.

Innovation Solution

A communication apparatus that establishes and maintains concurrent connections across multiple frequency channels, using management frames to control and disconnect connections as needed, ensuring robust communication even in the presence of interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an AP transmits disconnection request signal via the second frequency channel, then the disconnection control is performed, but interference may occur and the disconnection request signal may fail to be transmitted

Engineering Contradiction:

Improveconnection control reliabilityVSAvoidinterference

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent uses a first frequency channel as an intermediary to transmit disconnection request signals for connections on the second frequency channel. When interference occurs on the second frequency channel, the AP can still send disconnection requests via the first frequency channel, ensuring reliable connection control without being blocked by interference on the target channel.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If an AP establishes connection in multiple frequency channels, then throughput is enhanced, but connection management complexity increases

Engineering Contradiction:

ImprovethroughputVSAvoidconnection management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a universal connection management mechanism where a single control channel (first frequency channel) can manage multiple connections across different frequency channels (second frequency channel). This multi-functional approach allows one channel to handle both data transmission and control signaling for multiple connections, reducing management complexity while maintaining high throughput.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If disconnection request signal is transmitted via the same frequency channel as the connection, then the control is simple, but the signal may be blocked by interference

Engineering Contradiction:

Improvecontrol simplicityVSAvoidsignal transmission reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent segments the control signaling function from the data transmission function by using separate frequency channels. The first frequency channel is dedicated for control signaling (disconnection requests), while the second frequency channel is used for data connections. This segmentation ensures that control signals are not blocked by interference on data channels, maintaining both simplicity and reliability.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20260052586A1Communication apparatus, control method, and storage medium

Publication Date: 2026.02.19 CANON KK

AI summary

In a case where a communication apparatus 102 communicates, via a first frequency channel, an establishment request for establishing a connection with a communication apparatus 103 via a second frequency channel different from the first frequency channel that complies with the same communication standard as a connection via the first frequency channel, or a disconnection request for disconnecting the connection, the communication apparatus 102 establishes or disconnects the connection with the communication apparatus 103 via the second frequency channel.