Cloud SIM Roaming via Seed SIM Activation
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Solution Overview
Problem
High roaming charges occur when terminal devices switch between different network service areas, as existing mobile networks require roaming agreements between carriers, leading to expensive charges.
Innovation Solution
A network roaming method that deactivates the user's SIM card and activates a seed SIM card to perform network registration, submits a cloud SIM card allocation request, and switches to a cloud SIM card to avoid roaming charges, using the seed SIM card's data traffic for allocation and registration processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal device uses traditional SIM card for network roaming between different carriers, then network connectivity is maintained, but high roaming charges are incurred
Solution Approach 1:
The system segments the SIM card functionality into two distinct components: a traditional SIM card for identity authentication and a virtual SIM card (eSIM) for data communication. This segmentation allows the terminal to use different SIM cards for different purposes, enabling roaming without incurring high charges by using the eSIM for data traffic while the traditional SIM handles authentication.
Solution Approach 2:
The patent introduces a cloud platform as an intermediary that manages the virtual SIM card allocation and activation. The cloud platform receives authentication results from the traditional SIM card and automatically activates corresponding eSIM profiles, mediating between the traditional networking system and the new roaming solution to enable charge-free roaming.
2Loss of energy
If terminal device activates cloud SIM card for roaming, then roaming charges are avoided, but system complexity increases due to multiple SIM card management
Solution Approach 1:
The system implements self-service automation where the terminal device automatically performs SIM card switching based on location and service requirements. The cloud platform automatically activates eSIM profiles based on authentication results from traditional SIM cards, eliminating manual intervention and reducing the perceived complexity for users.
Solution Approach 2:
The system performs preliminary actions by pre-configuring multiple eSIM profiles in the terminal device before roaming is needed. The cloud platform pre-activates appropriate eSIM profiles based on predicted roaming scenarios, so that when roaming is required, the switch can occur immediately without complex real-time decision-making.
3Duration of action of moving object
If terminal device switches between SIM cards for roaming, then network service continuity is maintained, but switching time and operational complexity increase
Solution Approach 1:
The terminal device performs preliminary actions by maintaining multiple active SIM card profiles in standby mode before roaming is needed. When roaming is detected, the system can immediately switch to the pre-configured eSIM profile without time-consuming activation or configuration, thus minimizing service interruption.
Solution Approach 2:
The system implements dynamic SIM card switching capability that can adaptively change between traditional SIM and eSIM based on real-time location and service requirements. This dynamic switching is managed by a control module that monitors network conditions and automatically selects the appropriate SIM card, making the switching process transparent and efficient.
Data Source
AI summary
A network roaming method is provided, this method includes: when a first determination condition is met, a user's SIM card is deactivated and a seed SIM card is activated, and a network registration for the seed SIM card is performed; after the network registration for the seed SIM card is completed, a data dialing is performed on the seed SIM card; after the data dialing is successfully performed, a cloud SIM card allocation request is submitted through a data traffic of the seed SIM card, the cloud SIM card is obtained and activated, and a network registration for the cloud SIM card is performed; after the network registration for the cloud SIM card is completed, a data dialing is performed on the cloud SIM card, the seed SIM card is deactivated and the user's SIM card is activated after the data dialing is successfully performed.