Local Profile Assistant for Remote SIM Provisioning
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Solution Overview
Problem
Current 2FF, 3FF, and 4FF SIM cards lack technological evolution, failing to support terminal device miniaturization and complex application scenarios, necessitating a more advanced solution for remote subscriber identification module provisioning.
Innovation Solution
A method and system for realizing local profile assistant (LPA) based on remote subscriber identification module provisioning (RSP), which involves pre-configuring a local profile assistant at the terminal side, creating and downloading an operator profile package by an operator server, and decrypting and installing it on an embedded universal integrated circuit card (EUICC) using various network connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional SIM cards (2FF, 3FF, 4FF) are used, then subscriber identification functionality is provided, but terminal device miniaturization requirements cannot be met and complex application scenarios cannot be supported
Solution Approach 1:
The patent extracts the SIM card functionality from the physical card form factor and implements it as a virtualized subscription management system. The LPA (Local Profile Assistant) extracts and manages subscription profiles locally, while the SM-DP+ server handles remote provisioning, eliminating the need for traditional physical SIM cards and enabling terminal miniaturization while maintaining full subscriber identification capabilities.
Solution Approach 2:
The patent introduces an LPA as an intermediary component that mediates between the terminal device and the SM-DP+ server. The LPA downloads, manages, and activates subscription profiles locally, serving as a bridge that enables remote SIM provisioning while supporting complex application scenarios such as multi-profile management and seamless network switching.
2Adaptability or versatility
If remote SIM provisioning is implemented, then terminal device size is reduced and complex scenarios are supported, but system complexity increases with multiple components (LPA, SM-DP+ server, EUICC)
Solution Approach 1:
The patent segments the SIM provisioning system into distinct functional modules: the SM-DP+ server for remote profile management, the LPA for local profile assistance and activation, and the EUICC for secure profile storage. This segmentation allows each component to perform its specific function efficiently, reducing overall system complexity despite the distributed architecture.
Solution Approach 2:
The LPA is designed as a universal component that can manage multiple subscription profiles, support different network operators, and handle various activation methods (QR code, activation code, manual input). This multi-functionality reduces the need for multiple specialized components, thereby managing system complexity while enhancing adaptability.
3Ease of operation
If multiple activation methods are provided (QR code, activation code, manual input), then user flexibility is improved, but operation complexity increases
Solution Approach 1:
The patent implements self-service activation mechanisms where users can independently activate profiles using QR codes scanned from promotional materials, activation codes received via SMS or email, or manual input of carrier details. The LPA automatically processes these inputs, validates them against the SM-DP+ server, and completes profile activation without requiring technical assistance, thereby improving ease of operation while managing complexity through automation.
Data Source
AI summary
Disclosed is a RSP-based LPA application implementation method, comprising: pre-setting an LPA of a terminal side, wherein the LPA is a local configuration proxy; when information about a subscription protocol between the terminal side and an operator is detected, an operator server creating, according to proxy information about the LPA, a corresponding operator data packet; the terminal side accessing the operator server, and downloading, according to the proxy information, the corresponding operator data packet; and an EUICC receiving the operator data packet forwarded by the LPA, decrypting same, and then installing the operator data packet, wherein the EUICC is an embedded universal integrated circuit card.