AP Change Control Unit Minimizes IP Re-allocation Latency

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

When changing the connection destination access point (AP) in a wireless LAN environment, existing technologies often require re-requesting an IP address allocation, which can lead to increased time needed to resume communication with external devices.

Innovation Solution

An electronic device comprising a reception unit for receiving a change request for a connection destination AP, a change unit for changing the AP, a confirmation unit for verifying communication with external devices after the change, and a control unit that executes specific processing for IP address allocation only if communication is not possible.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the connection destination AP is changed in a wireless LAN environment, then communication efficiency can be improved by switching to a less congested AP, but the time needed to resume communication increases due to IP address re-allocation

Engineering Contradiction:
Improvecommunication efficiencyVSAvoidtime to resume communication
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent performs preliminary verification of communication connectivity with external devices immediately after AP change. The confirmation unit checks whether communication is possible before triggering IP address re-allocation, thereby avoiding unnecessary re-allocation and reducing time loss.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements a feedback mechanism where the confirmation unit continuously monitors communication status after AP change. Based on the verification result, the control unit dynamically decides whether to execute IP address re-allocation processing, creating a closed-loop control system that optimizes the balance between communication efficiency and time consumption.

Inventive Principle:
Principle #23Feedback

2Reliability

If IP address re-allocation is performed after every AP change, then network configuration reliability is improved, but communication interruption time increases

Engineering Contradiction:
Improvenetwork configuration reliabilityVSAvoidcommunication interruption time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent uses feedback from the confirmation unit's communication verification to control the IP address re-allocation process. Only when communication is confirmed impossible does the system proceed with re-allocation, ensuring reliability is maintained only when necessary, thereby minimizing unnecessary communication interruptions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent changes the operational parameter of IP address management from 'always re-allocate' to 'conditionally re-allocate based on communication verification'. This parameter change optimizes the system by maintaining network configuration reliability through selective re-allocation while reducing overall communication interruption time.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250168727A1Electronic device, control method, and storage medium
Publication Date: 2025.05.22 CANON KK
  • US20250168727A1 patent drawing
  • US20250168727A1 patent drawing
  • US20250168727A1 patent drawing

AI summary

An electronic device includes: a reception unit that receives a change request for a connection destination AP from a currently connected access point (AP); a change unit that changes a connection destination AP on a basis of the change request; a confirmation unit that, when changing via the change unit, confirms whether or not communication can be performed with a specific external device communicated with before an AP change via an AP after change; and a control unit that performs control so that, relating to a result of confirmation by the confirmation unit, in a case where communication cannot be performed with the specific external device, a specific processing for requesting IP address allocation is executed, and in a case where communication can be performed with the specific external device, the specific processing is not executed.