Communication Terminal Wireless Interface Changeover Logic

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Solution Overview

Problem

Communication terminals struggle to maintain connectivity through the originally selected wireless network when the selected network becomes difficult to access, leading to disruptions in communication.

Innovation Solution

A communication terminal with multiple wireless interfaces, a communication availability determination unit, a changeover determination unit, and a connection request controller that idles until the selected wireless interface becomes usable again, allowing seamless switching to another interface if the initial one is unavailable.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the communication terminal automatically changes over to another wireless network when the selected network is difficult to access, then communication reliability is improved, but the user cannot maintain communication through the originally selected wireless network

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidnetwork selection flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system dynamically adjusts the wireless interface selection based on real-time communication availability. The connection request controller monitors the state of the selected wireless interface and automatically switches between automatic changeover mode and idle mode, making the system adaptable to changing network conditions while maintaining user preference for originally selected networks when possible.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The communication availability determination unit continuously monitors the state of the wireless interface and provides feedback to the connection request controller. This feedback mechanism enables the system to detect when the selected network becomes difficult to access and trigger appropriate responses, either by switching to another interface or by maintaining the original selection until recovery.

Inventive Principle:

Principle #23Feedback

2Reliability

If the connection request controller continuously attempts connection requests, then communication availability is improved, but power consumption increases

Engineering Contradiction:

Improvecommunication availabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Instead of continuous connection attempts, the system implements periodic connection requests based on the idle mode operation. The connection request controller enters an idle state when the selected wireless interface is unavailable and only resumes connection attempts when the interface becomes available again or when switched to another interface, reducing unnecessary power consumption while maintaining communication availability.

Inventive Principle:

Principle #19Periodic action

3Adaptability or versatility

If the communication terminal maintains connection requests on the selected wireless interface, then communication through the originally selected network is preserved, but communication disruptions occur when the network is unavailable

Engineering Contradiction:

Improvenetwork selection flexibilityVSAvoidcommunication continuity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary determination of communication availability through the communication availability determination unit before initiating connection requests. This preliminary check allows the system to anticipate network availability and take appropriate actions in advance, either by switching to another interface or by entering idle mode, thereby preventing communication disruptions before they occur.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8320285B2Communication terminal and recording medium

Publication Date: 2012.11.27 LENOVO INNOVATIONS LTD (HONG KONG)

AI summary

A communication terminal has a plurality of wireless communication units. An access control unit determines whether or not a selected wireless interface is in a state where a connection request is possible based on communication state information on the wireless interface selected beforehand in the plurality of wireless interfaces. When determining that a connection request using the selected wireless interface is not possible, the access control unit determines whether or not to change over the wireless interface used for a communication based on a changeover availability information table set beforehand. When determining that a changeover of the wireless interface is not possible, the access control unit idles without performing a connection request to establish a communication until it is determined that a connection request through the selected wireless interface becomes possible.