Embedded SIM Provisioning With NFC Emulated Cards at Scale
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Manual eSIM provisioning for hundreds or thousands of devices is cumbersome and time-consuming, particularly for customers deploying embedded subscriber identity modules (eSIMs).
Innovation Solution
Utilizing near-field communication (NFC) emulated cards on devices to automate eSIM provisioning by creating and storing unique identifiers and activation codes, allowing external devices to read and write these codes even when the device is powered off, and using a local profile assistant to manage the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual eSIM provisioning is performed for each device, then provisioning accuracy can be ensured, but provisioning time and labor cost increase significantly for large-scale deployments
Solution Approach 1:
The system performs preliminary actions by pre-generating eSIM activation codes and storing them in the NFC emulated card during device manufacturing. The Local Profile Assistant (LPA) application is pre-configured with the device's IMEI and EID. This preliminary preparation enables automated provisioning later without manual intervention, resolving the contradiction between provisioning speed and process complexity.
Solution Approach 2:
The device is designed to self-provision by automatically detecting the NFC emulated card, reading stored activation codes, and completing eSIM profile installation without external manual intervention. The LPA application autonomously manages the provisioning process by communicating with carrier servers using the pre-stored credentials, thereby achieving high-speed automated provisioning while maintaining simplicity.
2Extent of automation
If NFC emulated card is used to store eSIM activation code, then provisioning automation is enabled, but security requirements increase due to unauthorized access risks
Solution Approach 1:
The system applies beforehand cushioning by implementing multiple layers of security measures before provisioning operations. Encryption algorithms protect the eSIM activation code stored in the NFC emulated card. Authentication mechanisms verify the legitimacy of devices attempting to read or write to the card. These preventive security measures are built-in from the outset, enabling automation while maintaining high security standards.
3Ease of operation
If eSIM profile is downloaded and installed remotely, then physical SIM card handling is eliminated, but network connectivity requirements increase during provisioning
Solution Approach 1:
The system performs preliminary actions by pre-storing eSIM activation codes in the NFC emulated card during device manufacturing, before the device needs to connect to a network. This allows the device to autonomously authenticate with carrier servers and download eSIM profiles remotely without requiring physical SIM card handling or continuous network connectivity during the provisioning setup phase.
Data Source
AI summary
A method and device for embedded subscriber identity module (eSIM) provisioning is provided. In some embodiments, the device comprises at least one processing element. Upon the device powering up, the at least one processing element determines if an ESIM-PROVISION near-field communication (NFC) emulated card exists on the device. If the at least one processing element determines that the ESIM-PROVISION NFC emulated card does not exist on the device, the at least one processing element (i) determines a first unique identifier corresponding to the device and a second unique identifier corresponding to an eSIM of the device and (ii) creates and stores the ESIM-PROVISION NFC emulated card containing the first unique identifier, the second unique identifier, and an empty eSIM activation code field.