SIM Card Reconfiguration via Dynamic Authentication Switching
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Solution Overview
Problem
The telecommunications industry faces challenges in managing SIM cards across multiple network providers, particularly for global companies and telematic applications, where the destination country and network provider may be unknown, leading to labor-intensive and costly SIM reconfiguration when changing providers or locations.
Innovation Solution
A method and system that allows SIM cards to be reconfigured from one network provider to another by pre-storing generic authentication information, enabling association with any network without pre-defining all possible providers, and using a central SIM management center to facilitate the reconfiguration process, including transmitting new IMSI and activating secret information for the new network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SIM cards are issued with country-specific network providers, then authentication security is improved, but adaptability to unknown destination countries deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-storing multiple sets of authentication information corresponding to different network providers on the SIM card before the terminal reaches its final destination. This allows the SIM card to be ready for authentication with any network provider without requiring physical replacement, thus resolving the contradiction between maintaining security and adapting to unknown destinations.
Solution Approach 2:
The patent implements dynamics by enabling the SIM card to dynamically switch between different authentication information sets based on the detected network provider. The system transitions from a static, provider-specific SIM configuration to a dynamic, multi-provider capable configuration, allowing adaptation to different countries and networks while maintaining security through selective authentication.
2Reliability
If physical SIM cards are replaced when changing network providers, then authentication information is updated, but labor and time requirements increase
Solution Approach 1:
The patent applies mechanics substitution by replacing the mechanical process of physical SIM card replacement with an electronic/software-based solution. The terminal automatically detects the network provider and triggers a software process to load the appropriate authentication information from the SIM card's stored sets, eliminating the need for physical card replacement and significantly reducing time and labor requirements.
Solution Approach 2:
The patent uses copying by creating multiple copies of authentication information corresponding to different network providers within the SIM card. Instead of replacing the physical SIM, the system copies the necessary authentication data from the appropriate pre-stored set into the active authentication slot, enabling rapid switching without physical intervention.
3Ease of operation
If SIM cards are pre-configured with specific network providers, then authentication is simplified, but flexibility for reconfiguration deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the authentication information storage into separate, distinct sets within the SIM card, with each set corresponding to a specific network provider. This segmentation allows the system to maintain simple authentication operation by selecting the appropriate segmented set while also providing flexibility to reconfigure by switching between segments, thus resolving the contradiction between simplicity and flexibility.
Data Source
AI summary
In a telecommunications system including a plurality of different networks, terminals and smart cards, each terminal is usable in a particular network in association with one of the smart cards when that smart card is registered with that network. Each smart card carries secret information specific to its registered home network and with which the network can authenticate the smart card and allow use of the terminal with which that smart card is associated. Each smart card may be registered with one of the networks as its home network, selectively de-registered from its home network, and re-registered with a different one of the networks as its home network by obtaining data including an International Mobile Subscriber Identifier for use with that network. The Identifier is transmitted to the smart card, and the secret information relating to a particular network activated when registering or re-registering the smart card with that network.