Dual-SIM Mobile Device Automatic Network Switching
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Solution Overview
Problem
Mobile devices with multiple SIM cards face inconvenience due to dropped calls and increased power consumption when signal quality deteriorates during calls, requiring users to switch SIMs manually.
Innovation Solution
A mobile communication device with multiple SIMs and wireless communication units that automatically compares signal quality between networks and switches to the better network during a call, establishing a multi-call connection to maintain call quality without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual SIM switching is used when signal quality deteriorates, then call continuity can be maintained, but user convenience deteriorates and operation time increases
Solution Approach 1:
The system automatically monitors signal quality and performs SIM switching without user intervention. The processor continuously compares signal qualities from multiple SIMs and autonomously switches to the best signal when deterioration is detected, making the system self-managing and eliminating the need for manual user operation during critical call moments.
Solution Approach 2:
The system implements continuous feedback by monitoring signal quality parameters in real-time during calls. When signal quality from the current SIM deteriorates below a threshold, the system receives feedback about this degradation and automatically triggers a switch to an alternative SIM with better signal quality, creating a closed-loop control system that maintains call continuity.
2Reliability
If manual SIM switching is performed, then call quality can be maintained, but loss of time increases due to user intervention requirements
Solution Approach 1:
The system performs preliminary actions by continuously monitoring and comparing signal qualities from multiple SIMs in the background before a call actually needs to switch. This proactive approach ensures that when signal deterioration occurs, the system already has information about alternative SIMs' signal qualities and can immediately switch without requiring the user to manually select an alternative, thus minimizing time loss.
Solution Approach 2:
The automatic switching mechanism eliminates the time the user would spend manually detecting signal deterioration, deciding which SIM to switch to, and executing the switch. The system handles all these time-consuming operations autonomously, preserving call quality while minimizing time loss through self-managed switching.
3Reliability
If multiple SIMs are used to ensure signal quality, then call reliability improves, but device complexity increases
Solution Approach 1:
The system merges the functionality of multiple SIMs into a unified call management approach. Instead of treating each SIM as a separate entity requiring independent management, the system combines them into a single pool of available networks, automatically selecting the best one based on real-time signal quality. This merging approach maintains the reliability benefits of multiple SIMs while reducing the operational complexity for the user.
Solution Approach 2:
The processor automatically manages the complexity of coordinating multiple SIMs by continuously monitoring their respective signal qualities and autonomously deciding which SIM to use for ongoing calls. This self-service management eliminates the need for users to manually switch between SIMs or configure complex routing rules, thereby maintaining high signal quality reliability while keeping the user interface simple.
4Ease of operation
If automatic signal switching is implemented, then ease of operation improves, but device complexity increases
Solution Approach 1:
The system segments the signal monitoring and comparison tasks into distinct functional components. The processor divides the complexity by creating separate evaluation criteria for signal quality comparison, such as signal strength thresholds, network type preferences, and call state conditions. This segmentation allows the automatic switching mechanism to operate with clear, modular logic, improving ease of operation while keeping the control mechanism's internal structure organized and manageable.
Data Source
AI summary
A communication management method for a mobile communication device is provided and includes the steps of connecting first and second wireless communication units respectively to first and second service networks according to first and second information respectively provided by first and second Subscriber Identity Modules (SIMs); using first wireless communication unit to establish first call connection with remote communication device and afterward comparing qualities of first and second signals respectively received from first and second service networks; when quality of second signal is superior to quality of first signal, using second wireless communication unit to dial first SIM to establish second call connection with first wireless communication unit and afterward automatically establishing first multi-call connection among first and second wireless communication units and remote communication device; and then automatically establishing third call connection between second wireless communication unit and remote communication device in place of first call connection.