Provisional Device Registration for eSIM Activation
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Solution Overview
Problem
eSIM-capable devices often face delays in accessing cellular connectivity due to the lack of initial provisioning, especially when they do not have direct Internet access, leading to increased costs for OEMs and user inconvenience, as they require WiFi or other connectivity means to obtain mobile operator credentials.
Innovation Solution
Implementing a provisional registration process that allows unprovisioned eSIM devices to connect to a mobile network using emergency services infrastructure, enabling them to download and activate eSIM profiles without prior Internet access, utilizing the device's unique ID for authentication and limited connectivity to select and subscribe to mobile network plans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If eSIM-capable devices are shipped with empty eSIMs requiring remote provisioning, then device flexibility and reduced BOM costs are improved, but device activation is delayed when no Internet connectivity (WiFi) is available
Solution Approach 1:
The device performs preliminary actions by using its device identity to provisionally register on the mobile network before eSIM provisioning is complete. This preliminary registration enables the device to establish connectivity through the mobile network itself, eliminating the need to wait for WiFi availability or external provisioning sources.
Solution Approach 2:
The mobile network operator's infrastructure acts as an intermediary that enables the unprovisioned device to connect. The network accepts the device's identity as temporary credentials, serving as a mediator between the unprovisioned device and the eSIM provisioning process, allowing the device to obtain connectivity and subsequently provision its eSIM.
2Loss of time
If provisioning profiles are pre-loaded on devices to enable immediate cellular connectivity, then device activation speed is improved, but OEM costs increase
Solution Approach 1:
The device performs self-service by using its own device identity to authenticate and register on the mobile network without requiring pre-loaded provisioning profiles. The device independently obtains temporary credentials and uses them to access the network and provisioning services, eliminating the need for OEMs to pre-provision devices.
Solution Approach 2:
The system changes the authentication parameter from requiring pre-loaded profile credentials to accepting device identity (IMEI/EID) as temporary credentials. This parameter change allows the device to authenticate using information that is always present in the device, eliminating the need for costly pre-provisioning while enabling immediate activation.
3Ease of operation
If devices without SIM or active profile attempt to connect to mobile networks, then network security is compromised, but device connectivity and service provisioning are enabled
Solution Approach 1:
The system implements dynamic credential validation by transitioning from static profile-based authentication to dynamic device identity-based authentication. The network temporarily accepts device identity as valid credentials, allowing connectivity while maintaining security through time-limited, purpose-specific access that automatically expires or requires full provisioning.
Solution Approach 2:
The network performs partial authentication by accepting device identity without requiring complete eSIM provisioning. This partial action allows the device to obtain sufficient connectivity to provision its eSIM, with the understanding that full security credentials will be established subsequently through the provisioning process.
Data Source
AI summary
Mobile devices are provisionally registered when the mobile device does not have an active subscription profile. A communications session is established with an access network of a mobile communications network. Identification data for the computing device is sent to the access network. A connectivity configuration is used to allow the computing device to establish a limited connection on the mobile communications network. Using the limited connection, an eSIM profile is received. The eSIM profile is activated and the device is connected to an associated mobile network.