SM-DP+ Profile Selection Using Device Type for eUICC Compliance
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Solution Overview
Problem
Existing methods for downloading mobile network operator profiles to secure elements, such as eUICCs, are prone to errors due to the lack of knowledge about the device type, leading to non-compliant profile installations.
Innovation Solution
A method for downloading profiles from a SM-DP+ to a secure element that classifies profiles into Preferred, Authorized, and Forbidden types based on device type identifiers, ensuring successful installations by selecting appropriate profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If profiles are downloaded without device type identification, then the download process is simple and fast, but the profile compliance with device becomes unreliable
Solution Approach 1:
The patent applies preliminary action by retrieving and storing device type identifiers (such as IMEI or TAC) before the profile download process begins. The SM-DP+ server uses these pre-retrieved device identifiers to classify and select appropriate profiles from categories (Preferred, Authorized, Forbidden), ensuring compliance is determined in advance rather than during the download process. This maintains download simplicity while improving reliability.
2Manufacturing precision
If device type identifier is retrieved and used for profile classification, then profile installation success rate increases, but the download process complexity increases
Solution Approach 1:
The system applies self-service by automatically retrieving device type identifiers, classifying profiles into categories (Preferred, Authorized, Forbidden), and selecting appropriate profiles without requiring manual intervention. The SM-DP+ server autonomously performs device identification, profile classification, and selection based on pre-defined categories, reducing support tasks while improving installation accuracy through systematic automated processes.
3Reliability
If profiles are classified into categories based on device type, then the success rate of profile installations improves, but the time required for profile selection increases
Solution Approach 1:
The patent resolves this contradiction by performing profile classification into Preferred, Authorized, and Forbidden categories in advance, before the actual download is initiated. Device type identifiers are retrieved and stored preliminarily, enabling the SM-DP+ server to quickly select from pre-classified profiles rather than performing classification during the download process, thus maintaining fast download speeds while improving installation success rates.
Data Source
AI summary
Provided is a method for downloading a profile from a SM-DP+, Subscription Manager-Data Preparation Plus, to a secure element of a device, wherein the SM-DP+ stores profiles classified in three categories: a Preferred profile type; an Authorized profile type; and a Forbidden profile type, a profile type that has been downloaded on a device with failure. The method comprises includes retrieving by the SM-DP+ a device type identifier of the device and selecting in the categories a profile of either a Preferred profile type or an Authorized profile type, based on the device type identifier, a profile of the Preferred profile type having, for the selection, a higher priority than a profile of the Authorized profile; and downloading from the SM-DP+ to the device the selected profile and installing it in the secure element.