SIM Router Device Routing Instructions to Multiple Authentication Applications

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Solution Overview

Problem

Current communication terminal devices can only utilize a single SIM card for communication, limiting their ability to access multiple communication lines simultaneously, and existing dual SIM technologies have limitations such as only allowing one SIM to be active at a time for communication.

Innovation Solution

A SIM router device with multiple input interfaces and a mapping information storage unit that associates these interfaces with authentication applications on a SIM card, allowing simultaneous routing of instructions to multiple authentication applications for concurrent standby and communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple SIM cards are inserted into one communication terminal device, then the ability to access multiple communication lines is improved, but the device complexity increases

Engineering Contradiction:

Improveability to access multiple communication linesVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple SIM card functionalities into a single SIM card by integrating multiple authentication applications (e.g., USIM1, USIM2) within one SIM card. The SIM router device routes communication instructions to different authentication applications based on mapping information, enabling one SIM card to perform the functions of multiple SIM cards without requiring multiple physical SIM card slots or additional SIM card controllers, thus reducing device complexity while maintaining multi-line access capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The SIM card is designed with multi-functionality by incorporating multiple authentication applications that can handle different communication lines. The SIM router device enhances this universality by providing intelligent routing capabilities, allowing a single SIM card to universally support multiple communication networks and services, replacing the need for multiple specialized SIM cards

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If dual SIM dual standby technology is used, then the ability to maintain multiple communication lines is improved, but only one SIM can be used for communication at a time

Engineering Contradiction:

Improveability to maintain multiple communication linesVSAvoidcommunication efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The SIM router device implements dynamic routing capabilities that can adaptively switch between different authentication applications based on communication requirements. The mapping information storage unit stores multiple routing rules, and the controller dynamically selects appropriate authentication applications for different communication tasks, enabling flexible transition between standby and active communication states for multiple SIMs, thus improving communication efficiency while maintaining multi-line capability

Inventive Principle:

Principle #15Dynamics

3Productivity

If multiple SIM cards are used for simultaneous standby and communication, then the communication capability is improved, but the cost of SIM issuance and management increases

Engineering Contradiction:

Improvecommunication capabilityVSAvoidnumber of SIM cards

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The patent combines multiple SIM card functionalities into a single SIM card by integrating multiple authentication applications (e.g., USIM1, USIM2) within one SIM card. The SIM router device routes communication instructions to different authentication applications based on mapping information, enabling one SIM card to perform the functions of multiple SIM cards without requiring multiple physical SIM card slots or additional SIM card controllers, thus reducing device complexity while maintaining multi-line access capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent creates virtual copies of SIM card functionality within a single SIM card through multiple authentication applications. Each authentication application acts as a virtual copy of a traditional SIM card, providing the same authentication and communication functions. The SIM router device manages these virtual copies by routing instructions to the appropriate authentication application, enabling multi-SIM functionality without requiring multiple physical SIM cards, thereby reducing SIM issuance and management costs

Inventive Principle:

Principle #26Copying

Data Source

PatentUS11736947B2SIM router device, communication terminal device, method of routing, and method of manufacturing SIM

Publication Date: 2023.08.22 DENSO CORP

AI summary

A SIM router device is configured to access a SIM that stores a first authentication application and a second authentication application. The SIM router device includes a first input interface, a second input interface, a mapping information storage unit, and a controller. The mapping information storage unit is configured to acquire an authentication application list that lists the first authentication application and the second authentication application from the SIM, and store a mapping information in which the first input interface is associated with the first authentication application and the second input interface is associated with the second authentication application. The controller is configured to route, based on the mapping information, a first instruction received by the first input interface to the first authentication application of the SIM, and a second instruction received by the second input interface to the second authentication application of the SIM.