Wireless LAN Handover Parameter Consistency Control

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Solution Overview

Problem

In wireless LAN communication systems, handover processes often fail due to inconsistencies in communication parameters between a mobile terminal and a digital camera, leading to failures in establishing wireless LAN connections.

Innovation Solution

A communication apparatus with a storage unit to store communication parameters for a second communication path, a communication establishment control unit to establish communication using these parameters, and a communication parameter change control unit that prohibits changes to parameters when switching from a first communication path to a second path, ensuring parameter consistency during handover.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the mobile terminal allows the user to change communication parameters stored in the digital camera through operation, then the user can update communication parameters, but the communication parameters stored by the mobile terminal become inconsistent with those in the digital camera, causing handover failures

Engineering Contradiction:

Improveuser ability to change communication parametersVSAvoidhandover establishment reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent implements dynamic control of the parameter change prohibition based on the communication establishment method. When handover is detected, the parameter change function is prohibited; when other methods are used, parameter changes remain allowed. This dynamic switching resolves the contradiction by adapting system behavior to the specific communication scenario.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system detects whether communication was established through handover and provides feedback by enabling or disabling the parameter change function accordingly. This feedback mechanism ensures that parameter changes are blocked only when necessary (during handover), maintaining both user flexibility and connection reliability.

Inventive Principle:

Principle #23Feedback

2Productivity

If the mobile terminal stores communication parameters obtained from the digital camera, then the terminal can establish wireless LAN communication by handover, but parameter inconsistencies arise when parameters are changed, leading to communication failures

Engineering Contradiction:

Improvehandover communication establishment efficiencyVSAvoidcommunication parameter consistency

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent performs preliminary detection of the communication establishment method before allowing parameter changes. By identifying handover scenarios in advance, the system proactively prevents parameter changes that would cause inconsistency, thereby maintaining both handover efficiency and parameter reliability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system applies preliminary anti-action by prohibiting parameter changes when handover is detected. This preemptive measure prevents the harmful effect of parameter inconsistency before it can occur, ensuring that the stored parameters remain consistent with the digital camera's parameters for successful handover execution.

Inventive Principle:

Principle #9Preliminary anti-action

3Adaptability or versatility

If the system permits communication parameter changes after handover establishment, then users can update parameters, but the stored parameters in the mobile terminal become outdated, causing subsequent handover failures

Engineering Contradiction:

Improveparameter update capabilityVSAvoidsubsequent handover success rate

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements dynamic control of the parameter change function based on the communication establishment method. When handover is detected, parameter changes are prohibited to maintain consistency for future handovers. When other communication methods are used, parameter updates remain allowed, providing adaptability without compromising handover reliability.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11558804B2Communication apparatus capable of wireless communication with external apparatus, control method therefor, and storage medium storing program for executing control method

Publication Date: 2023.01.17 CANON KK

AI summary

A communication apparatus is provided that establishes a wireless LAN communication by handover. The communication apparatus communicates with an external apparatus through a first communication path. The communication apparatus includes a storage unit that store a communication parameter used for communicating with the external apparatus through a second communication path, a communication establishment control unit that performs control to establish communication with the external apparatus through the second communication path using the communication parameter stored, and a communication parameter change control unit that performs control to change the communication parameter stored in the external apparatus that establishes communication through the second communication path. The communication parameter change control unit prohibits change of the communication parameter stored in the external apparatus that establishes communication through the second communication path when the communication through the second communication path is established by switching from communication through the first communication path.