eUICC Profile Management via Standardized AT Command Interface
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Solution Overview
Problem
Existing wireless communication systems lack standardized interfaces for managing and testing eSIM profiles on embedded universal integrated circuit cards (eUICCs), particularly in devices with constrained user interfaces or during conformance testing.
Innovation Solution
Development of AT commands for eUICCs to facilitate profile activation, selection, and management, including download, enable/disable, delete, nickname update, metadata query, memory reset, and SM-DP+ address editing, ensuring interoperability and automation in testing scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standardized interfaces for managing eSIM profiles are implemented, then interoperability and automation in testing are improved, but device complexity increases due to additional command interfaces and protocols
Solution Approach 1:
The patent implements a universal AT command interface that can manage multiple eSIM profiles across different devices and testing scenarios. The command set provides multi-functional capabilities including profile download, activation, deletion, and metadata management through standardized instructions that work across various eUICC implementations, thereby improving interoperability while maintaining a consistent interface structure.
2Extent of automation
If AT commands are added for profile management, then automation capability is improved, but ease of operation deteriorates due to increased command complexity for users
Solution Approach 1:
The patent introduces an intermediary layer that translates high-level profile management operations into specific AT commands. This mediator handles the complexity of command sequences, error handling, and state management, allowing automation scripts to issue simple management commands while the intermediary manages the underlying command complexity, thus maintaining ease of operation while enabling automation.
3Productivity
If multiple profile management functions are integrated, then productivity is improved through comprehensive control, but device complexity increases due to additional memory and processing requirements
Solution Approach 1:
The patent merges multiple profile management functions including download, activation, deletion, and metadata operations into a unified AT command framework. By combining these functions under a single standardized interface with shared processing logic and common memory structures, the system achieves comprehensive profile management capability while avoiding the complexity overhead of separate independent systems for each function.
Data Source
AI summary
A UE and UE peripheral device are described. The UE can perform receiving, at a local profile assistant (LPA) of the UE and via a local management interface, an attention (AT) command from a UE peripheral device; determining that the AT command is for an embedded universal integrated circuit card (eUICC) of the UE, the eUICC configured to support a plurality of eSIM profiles; providing a request to the eUICC according to the AT command; obtaining, from the eUICC responsive the request, an indication of a status of the request; providing an AT command response to the UE peripheral device via the local management interface, the AT command response based at least in part on the indication of the status.