SIM Card Network Selection via Connection File Reset
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Solution Overview
Problem
Current roaming mechanisms in mobile telephony often result in terminals connecting to the last known network even if better quality networks are available, leading to suboptimal service quality, especially for communicating objects which cannot manually select networks.
Innovation Solution
A method that resets connection information files on the SIM card each time it is relaunched, allowing the terminal to select the best available network based on signal power, without relying on manual user intervention or complex application developments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal attaches to the last known operational network, then the connection stability is maintained, but the service quality deteriorates when better networks are available
Solution Approach 1:
The patent applies preliminary action by resetting the location information file before network selection occurs. This pre-clearing of stored network information ensures that the terminal does not automatically revert to a potentially suboptimal last-known network, instead enabling fresh network selection based on current signal conditions to achieve both stability and quality
2Productivity
If manual network selection is implemented, then the service quality improves, but the ease of operation deteriorates due to laborious procedures
Solution Approach 1:
The patent implements self-service by enabling the terminal to automatically select the best available network based on signal power measurements. The system performs network evaluation and selection autonomously without requiring user intervention, combining the quality benefits of manual selection with the convenience of automatic operation
3Productivity
If remote server-based network selection is used, then the service quality improves, but the device complexity increases due to application developments required
Solution Approach 1:
The patent extracts the network selection functionality from complex remote server-based systems and implements it directly within the terminal using standard roaming mechanisms. By leveraging existing terminal capabilities and resetting the location information file, the system achieves quality improvement without requiring additional application developments or server infrastructure
Data Source
Figure 1
AI summary
The present invention relates to a method for connecting a terminal (10) via means of connection (12) to a better mobile telephone network (1b) chosen from among a plurality of available mobile telephone networks (1a, 1b, 1c), the terminal (10) comprising a subscriber identification card (11), the method being characterized in that it comprises during a relaunch of the subscriber identification card (11) and/or of the means of connection (12) the steps of: (c) reinitialization by processing means of the subscriber identification card (11) of at least one connection information file stored on data storage means of the subscriber identification card (11); (d) selection of the best network (1b) from among said plurality of available mobile telephone networks (1a, 1b, 1c). The present invention relates moreover to a terminal for implementing this method.