SIM to eUICC Migration Profile Download and Session Disconnect
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Solution Overview
Problem
During the transition period from SIM cards to eUICCs, users face challenges in migrating SIM card functions to eUICCs, particularly in securely disconnecting SIM card sessions and ensuring seamless mobile network access.
Innovation Solution
A method and system that involves receiving user instructions to migrate from SIM cards to eUICCs by generating and downloading profiles on the eUICC, enabling the eUICC profile, and disconnecting the SIM card session, while optionally verifying identities and changing IMSIs to ensure secure transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a user purchases a terminal with eUICC during the transition period, then the terminal can identify and use the eUICC, but the user cannot easily migrate the SIM card function to the eUICC
Solution Approach 1:
The system enables self-service migration by automatically obtaining authorization codes through SMS verification and performing the profile download and installation process without requiring manual configuration or intervention from network operators
Solution Approach 2:
The terminal performs preliminary actions by pre-obtaining the authorization code through SMS verification before initiating the profile download, and prepares the eUICC by setting it to download mode in advance of the actual migration
2Reliability
If the SIM card session is not properly disconnected after migration, then the SIM card can be reactivated, but security and service continuity are compromised
Solution Approach 1:
The system applies preliminary anti-action by sending an IMSI change instruction to the network before completing the migration, which pre-blocks the SIM card from being reactivated and prevents potential security issues or service conflicts
Solution Approach 2:
The system uses feedback mechanisms by receiving confirmation from the network that the SIM card has been successfully deactivated, and only after this feedback is received does it proceed to delete the SIM card profile and complete the migration
3Productivity
If the eUICC profile download is performed without proper authorization verification, then the migration process is faster, but security is compromised
Solution Approach 1:
The system performs preliminary authorization verification by obtaining the authorization code through SMS verification and validating it against the eUICC identifier before initiating the profile download, ensuring security is established in advance
Solution Approach 2:
The system uses the authorization code as an intermediary mechanism that bridges the security requirement and the download process, allowing the profile to be downloaded only after the code is successfully verified and matches the eUICC
Data Source
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AI summary
The present invention discloses a method for migration from a SIM card to an eUICC, a device, and a system. The method includes: receiving a first migration instruction entered by a user, where the first migration instruction is used to instruct to migrate from a SIM card to an eUICC; sending a first request to a server, where the first request includes a user identity corresponding to the SIM card and an identity of the eUICC, so that the server generates or selects a profile for the eUICC according to the user identity; downloading the profile from the server to the eUICC; enabling the profile; accessing a mobile network by using the profile; and disconnecting a session from the SIM card. The solution resolves a requirement that a user of a compatible terminal needs to implement migration from a SIM card to an eUICC during a transition period.