Virtualizing eUICC to Reduce Physical SIM Complexity

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Solution Overview

Problem

The existing physical SIM card infrastructure poses challenges for OEMs and third-party entities managing connected devices, including increased costs, logistical complexities, and environmental impact, due to the need for physical SIM cards and multiple cellular network operators.

Innovation Solution

The implementation of virtual SIM card technology, which allows for the emulation of a reprogrammable universal integrated circuit chip (eUICC) in a connected device's operating system, enabling seamless selection and switching of cellular networks without physical SIM cards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If physical SIM cards are integrated into connected devices, then cellular network access is enabled, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvecellular network accessVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a virtual SIM card that is a software-based copy of the physical SIM card functionality. The virtual SIM card emulates the behavior, interface, and network authentication capabilities of a physical SIM card without requiring the physical hardware presence, thereby enabling cellular network access while reducing device complexity

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent replaces the mechanical/physical SIM card system with a software-based virtual SIM card system. Instead of using physical cards that require slots, insertion, and extraction mechanisms, the system uses software emulation that runs on the device's operating system, eliminating the need for physical hardware components while maintaining network access functionality

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If multiple physical SIM cards are managed, then network selection flexibility is improved, but logistical complexity and cost increase

Engineering Contradiction:

Improvenetwork selection flexibilityVSAvoidlogistical complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal virtual SIM card manager that can handle multiple virtual SIM cards and multiple cellular networks within a single software platform. This universal manager provides multi-functionality by supporting network selection, SIM card management, and authentication across different carriers and devices without requiring separate physical SIM cards for each network

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the functionality of multiple physical SIM cards into a single virtual SIM card system. Instead of managing separate physical cards for different networks, the system combines multiple network profiles and authentication credentials into unified virtual SIM cards that can be switched and managed through software, thereby reducing logistical complexity while maintaining network selection flexibility

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If physical SIM cards are deployed globally, then cellular connectivity is achieved, but environmental impact and manufacturing cost increase

Engineering Contradiction:

Improvecellular connectivityVSAvoidenvironmental impact

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent uses virtual SIM cards as software copies that eliminate the need for physical SIM card manufacturing, distribution, and disposal. By emulating SIM card functionality in software, the system maintains cellular connectivity while avoiding the environmental harm associated with producing billions of physical plastic cards and their associated packaging and logistics

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent replaces expensive, long-lived physical SIM cards with lightweight, easily deployable virtual SIM cards that can be distributed digitally. Virtual SIM cards have minimal environmental footprint as they exist as software code rather than physical materials, and can be updated or revoked remotely without physical replacement, thereby reducing manufacturing costs and environmental impact

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS20250184714A1Apparatuses, Methods and Systems for Virtualizing a Reprogrammable Universal Integrated Circuit Chip

Publication Date: 2025.06.05 GIGSKY INC

AI summary

Apparatuses, methods, and systems are provided for virtualizing a reprogrammable universal integrated circuit chip (UICC) in a connected device's operating system. In one embodiment, an integrated cellular modem in the connected device is configured to use a simple protocol to communicate with the reprogrammable UICC. The protocol may be implemented in a way that allows cellular modem vendors to easily support such functionality and allow original equipment manufacturers to upgrade connected devices already deployed in the field.