Welded SIM Card Integration for Radio Module Reliability

Solution Overview

Problem

Conventional SIM cards in communication devices are vulnerable to environmental constraints and require accessibility, leading to manufacturing complexities and increased costs due to their external nature, which compromises their reliability and the device's overall quality.

Innovation Solution

Integrating the SIM card directly onto a printed circuit board or communication module within the device, providing protection from environmental factors and eliminating the need for accessibility, while ensuring secure operation through key-based authentication and configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the SIM card is made external and removable, then the subscriber can change terminal or operator easily, but the SIM card becomes vulnerable to environmental constraints and requires accessible housing that complicates manufacturing

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges the SIM card with the terminal equipment by integrating it into the housing, making it no longer removable. This resolves the contradiction by prioritizing reliability and environmental protection over the ability to change terminals, as the SIM card becomes a fixed, protected component rather than an external removable element

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If the SIM card is made external and removable, then the subscriber can change operator, but the housing must be accessible which substantially complicates manufacture and increases cost

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The SIM card is merged with the terminal housing, eliminating the need for separate accessible compartments. This integration simplifies manufacturing by removing the complexity of creating accessible housing structures while maintaining the ability to change operators through standard SIM card replacement procedures

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If the SIM card is housed externally, then the subscriber can access it, but this causes bulk and increases development time due to signal routing requirements

Engineering Contradiction:

Core Design Contradiction:

Ease of operationVSVolume of stationary object

Solution Approach 1:

The SIM card housing is merged with the terminal housing, eliminating the need for separate accessible compartments. This integration reduces device bulk while maintaining accessibility, as the SIM card remains accessible through the integrated housing structure without requiring additional space or complex signal routing

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8131318B2Radio communication device comprising at least one radio communication module and one SIM card, corresponding radio communication module and SIM card

Publication Date: 2012.03.06

AI summary

A radio communication device includes at least one radio communication module including baseband and/or radio frequency signal processing. The module of the device carries an internal SIM card, permanently welded thereto.