Virtual SIM Distribution System for Carrier Subsidy Locking
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Solution Overview
Problem
Existing wireless systems face challenges in providing users with wireless network services without SIM cards and in effectively enforcing subsidy locking, as SIM cards are locked to carriers rather than devices, making it difficult to manage device subsidies and user network access.
Innovation Solution
The implementation of a virtual subscriber identity module (VSIM) distribution system, which allows users to obtain and use wireless network services by requesting and downloading VSIMs over a communications network, with a broker system managing carrier associations and subsidy locking through International Mobile Equipment Identity (IMEI) identifiers, ensuring devices are locked to specific carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SIM cards are used for carrier locking, then carrier control over devices is improved, but user flexibility and ease of obtaining services are worsened
Solution Approach 1:
The patent creates a virtual copy of the SIM card functionality (VSIM) that can be distributed digitally without physical media. This virtual SIM card replicates the authentication and carrier locking functions while enabling flexible electronic distribution and activation, resolving the contradiction between maintaining carrier control and improving user convenience.
Solution Approach 2:
The patent replaces the mechanical/physical SIM card system with an electronic/software-based VSIM system. This substitution eliminates the need for physical card handling, manufacturing, and distribution while maintaining the essential carrier authentication and device locking functions through digital delivery and activation.
2Reliability
If physical SIM cards are distributed, then carrier subsidy locking is enforced, but device provisioning complexity and time are increased
Solution Approach 1:
The patent implements preliminary provisioning where the VSIM is prepared and associated with device identifiers (IMEI, ESN) before actual device activation. The broker system pre-establishes the relationship between devices and allowed carriers, and pre-configures the VSIM parameters, simplifying the on-site provisioning process while maintaining subsidy locking enforcement.
Solution Approach 2:
The patent introduces a broker system as an intermediary between carriers, devices, and VSIM distribution. This broker manages the complex provisioning logic, maintains databases of allowed carriers per device, and coordinates VSIM delivery and activation, thereby reducing the complexity burden from individual carriers and streamlining the overall provisioning process.
3Reliability
If SIM cards are manufactured and physically distributed, then carrier authentication is ensured, but loss of time in activation and service deployment is increased
Solution Approach 1:
The patent replaces the physical SIM card distribution and activation mechanism with an electronic VSIM delivery system. The VSIM can be instantly transmitted digitally to the device and activated remotely through the broker system, eliminating the time required for physical card shipping, handling, and manual activation while maintaining secure carrier authentication through digital verification of device identifiers and carrier permissions.
Data Source
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.