Virtual SIM Broker for Carrier Subsidy Locking
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Solution Overview
Problem
Existing wireless systems face challenges in providing users with flexible access to wireless network services without SIM cards and in effectively enforcing subsidy locking, as SIM cards are locked to carriers rather than devices.
Innovation Solution
The implementation of a method and system that allows users to obtain and use virtual Subscriber Identity Modules (VSIMs) through a broker system, where devices can request and select VSIMs associated with specific carriers, with subsidy locking enforced by limiting VSIM availability to authorized carriers based on the device's distribution channel and geographic location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If SIM cards are used for carrier locking, then subsidy locking is enforced, but device flexibility and user access without SIM cards are limited
Solution Approach 1:
The patent creates a virtual copy of the SIM card functionality through software-based VSIM technology. The VSIM replicates all authentication and carrier identification functions of a physical SIM card while being stored in the device's memory, eliminating the need for a physical SIM card slot and enabling flexible carrier selection while maintaining subsidy locking through software enforcement
Solution Approach 2:
The patent replaces the mechanical SIM card insertion/removal system with a software-based virtual SIM implementation. The physical SIM card interface is eliminated in favor of digital authentication credentials stored in device memory, allowing for programmable carrier restrictions and flexible provisioning without physical media
2Ease of operation
If physical SIM cards are required, then carrier authentication is established, but user convenience and service accessibility are reduced
Solution Approach 1:
The VSIM creates a virtual representation of carrier authentication credentials that can be downloaded and installed like any other application. This eliminates the need for users to physically handle SIM cards while maintaining secure carrier authentication through software-based credential verification and encryption
Solution Approach 2:
The patent introduces a virtualization layer that mediates between the device and the physical SIM card infrastructure. This VSIM intermediary handles all authentication communications with the network while being managed through software interfaces, making the authentication process transparent and convenient for users
3Adaptability or versatility
If SIM cards are locked to carriers, then subsidy locking is maintained, but device portability and service options are limited
Solution Approach 1:
The patent implements dynamic carrier restriction management where the VSIM can be programmatically configured to allow or deny access to specific carriers. This enables flexible subsidy locking policies that can be updated remotely through software updates, allowing carriers to maintain control while enabling device portability and multiple service options
Data Source
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AI summary
Apparatus and methods for distributing electronic access client modules for use with electronic devices. In one embodiment, the access client modules are virtual subscriber identity modules (VSIMs) that can be downloaded from online services for use with cellular-equipped devices such as smartphones. The online services may include a point of sale (POS) system that sells electronic devices to users. A broker may be used to facilitate the selection of a virtual subscriber identity module. A provisioning service may also be used to provision the selected VSIM.