Home Appliance Wi-Fi Registration via Peer AP Credential Sharing

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Solution Overview

Problem

Conventional methods for registering home appliances with a server result in high battery consumption on mobile terminals due to scanning operations and are prone to failure from incorrect network information input, such as passwords.

Innovation Solution

A system where a pre-registered home appliance assists in discovering and transmitting network information to an unregistered appliance, reducing the need for additional user input on the mobile terminal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the mobile terminal performs scanning operations to discover home appliances, then the home appliance registration function is achieved, but the battery consumption of the mobile terminal increases significantly

Engineering Contradiction:
Improvehome appliance registration functionVSAvoidbattery consumption of mobile terminal
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

A pre-registered home appliance acts as an intermediary device between the mobile terminal and the unregistered home appliance. The pre-registered appliance performs the scanning operation on behalf of the mobile terminal, discovering unregistered appliances through its own communication module. This transfers the energy-consuming scanning task from the mobile terminal to the stationary home appliance, resolving the contradiction between registration functionality and battery consumption.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If users manually input network information for AP connection, then the registration process can be completed, but the process is prone to failure from incorrect input

Engineering Contradiction:
Improveregistration process completionVSAvoidregistration success rate
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system enables automatic network information acquisition where the unregistered home appliance autonomously obtains AP connection credentials from the pre-registered home appliance without requiring manual user input. The unregistered appliance extracts and applies the network information (SSID and password) automatically, eliminating human error in manual entry while maintaining registration process completion. This self-service approach simultaneously improves reliability and ease of operation.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If the mobile terminal connects to AP using scanned information, then remote control functionality is achieved, but additional user input requirements increase operational complexity

Engineering Contradiction:
Improveremote control functionalityVSAvoidoperational steps required
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The pre-registered home appliance performs preliminary actions by storing AP network information in advance and making it available for other appliances. When an unregistered appliance needs to connect to the AP for remote control functionality, it automatically retrieves the pre-stored network information from the pre-registered appliance without requiring users to manually input credentials or perform additional connection steps. This preliminary preparation of network information reduces operational complexity while maintaining adaptability for remote control.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4258719B1Home appliance having an application for registering the home appliance to a server
Publication Date: 2026.04.22 LG ELECTRONICS INC
  • EP4258719B1 patent drawingFigure 1~2
  • EP4258719B1 patent drawingFigure 3~4
  • EP4258719B1 patent drawingFigure 5

AI summary

A home appliance configured to be registered in a server, the home appliance includes: a wireless fidelity (Wi-Fi) module, based on the home appliance being registered in the server, communicatively connected to an access point (AP) and configured to periodically operate in an AP mode through a virtual interface, and a controller configured to control the Wi-Fi module to periodically operate in the AP mode. The Wi-Fi module is configured to generate a beacon signal to search for an unregistered home appliance based on the Wi-Fi module being operated in the AP mode.