Virtual SIM Card for Localized Roaming
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Solution Overview
Problem
Existing mobile communication systems incur high roaming call charges due to longer communication routing and increased network resource consumption, especially in international roaming scenarios, where users must pay for international calls even when both parties are in the same roaming region, and the process of obtaining a new SIM card in a foreign region is inconvenient.
Innovation Solution
A method and apparatus for achieving localized roaming by applying for a virtual SIM card in a roaming region, which allows users to obtain a corresponding mobile terminal number and activate it as a calling or called party, reducing the need for a new SIM card and minimizing roaming charges, by using virtual SIM card management software to set up communication connections and manage SIM card information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If users purchase a new SIM card in the roaming region, then localized roaming can be achieved to reduce call charges, but the operation becomes inconvenient and additional costs are incurred
Solution Approach 1:
The patent creates a virtual copy of a SIM card (virtual SIM card) that replicates the functionality of a physical SIM card without requiring users to physically obtain a new card in the roaming region. The virtual SIM card is generated and activated remotely, providing localized roaming capabilities while avoiding the inconvenience of visiting network operator business halls and the additional costs associated with purchasing new SIM cards.
2Loss of energy
If users purchase a new SIM card in the roaming region, then localized roaming can be achieved to reduce call charges, but device complexity increases due to dual-card dual-standby requirements
Solution Approach 1:
The virtual SIM card creates a virtual representation of a roaming region SIM card that can be activated within the existing mobile terminal's single SIM card slot. This eliminates the need for dual-card dual-standby device functionality, as the virtual SIM card operates alongside or in conjunction with the home country SIM card using the terminal's existing hardware capabilities, thereby reducing device complexity while achieving localized roaming.
3Adaptability or versatility
If traditional roaming routing is used, then home country SIM card can be used globally, but communication routing becomes longer and call charges increase
Solution Approach 1:
The patent enables the mobile terminal to dynamically switch between using the home country SIM card for international calls and the virtual SIM card for local calls within the roaming region. This local quality approach ensures that calls made within the roaming region are routed through the local virtual SIM card, minimizing routing distance and reducing charges, while maintaining the global usability of the home country SIM card for calls outside the roaming region.
Data Source
AI summary
The present invention discloses a method and a relevant apparatus for achieving localized roaming of a mobile terminal. In the present invention, the mobile terminal sends real SIM card information to apply for a virtual SIM card to obtain a corresponding mobile terminal number of a roaming region, and registers user information to activate the virtual SIM card to serve as a calling party or a called party, so as to set up a called communication connection of a real SIM card. The mobile terminal applies for a virtual SIM card from a communication network of a roaming country to obtain a corresponding mobile terminal number of the roaming region through allocation, so that the user does not need to purchase a new SIM card in the roaming region, thereby saving the charges for purchasing the SIM card, ensuring a convenient operation and satisfying the demand of the user.