RF Interface for Inaccessible M2M SIM Personalization
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Solution Overview
Problem
Existing methods for personalizing and managing M2M SIM modules integrated in devices like cars and machines are challenging due to inaccessible locations and integration constraints, requiring significant adaptations in design and lacking direct access for data communication.
Innovation Solution
A method and system that utilize an RF interface with electrical contacts to extract and inject data signals via an electrical connecting conductor, allowing for data communication without physical access, using existing circuit wiring and converting signals to RF frames compatible with ISO/IEC 14443 standards, enabling personalization and updates without modifying the SIM module or device design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the M2M module is firmly fixed and integrated in inaccessible locations to improve robustness and integration, then device reliability is improved, but ease of operation for personalization and data access deteriorates
Solution Approach 1:
The patent replaces the mechanical approach of physically accessing the SIM module (opening devices, locating modules) with an electromagnetic field-based RF communication system. The RF interface allows data transmission through air or conductors without physical contact with the module, enabling personalization while the module remains securely integrated in inaccessible locations.
Solution Approach 2:
The patent introduces an RF interface as an intermediary between the external personalization equipment and the internally integrated M2M module. This intermediary enables communication through the device structure (walls, chassis, circuit boards) without requiring direct physical access to the module, thus maintaining both security and ease of operation.
2Ease of operation
If radio frequency communication means are used to download data and personalize the SIM module, then ease of operation is improved, but device complexity increases due to required adaptations in integrated circuit chip design
Solution Approach 1:
The patent makes the M2M module dual-functional by equipping it with both traditional electrical contacts for power and data, and an RF interface for wireless communication. This allows the same module to serve both wired and wireless communication needs, enabling personalization through RF without requiring separate dedicated hardware for each function.
Solution Approach 2:
The patent combines the RF communication capability with the existing M2M module structure, merging two communication methods (electrical contact and RF) into a single integrated unit. This consolidation avoids the need for separate personalization devices and reduces overall system complexity despite adding RF functionality.
3Manufacturing precision
If the M2M module is integrated without direct access to improve robustness, then manufacturing precision is improved, but ease of repair and maintenance deteriorates
Solution Approach 1:
The patent replaces mechanical access requirements with electromagnetic field-based RF communication, allowing maintenance and personalization operations to be performed remotely through the device structure without disassembly or physical access to the integrated module.
4Adaptability or versatility
If significant adaptations in integrated circuit chip design are made to enable RF communication, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal M2M module design that incorporates both electrical contact and RF interface capabilities, allowing the same chip to adapt to different communication scenarios (wired or wireless) without requiring different hardware designs for different applications.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables seamless personalization and management of M2M SIM modules regardless of integration level or location, reducing integration constraints for manufacturers and allowing multiple module connections, with minimal modifications to existing systems and no need to know the module's location.
Implementation Method 1
establishment of a radio frequency RF interface with electrical contacts in the device, extraction of the signals from the electrical connecting conductor, and injection of the signals resulting from the extracted signals, in the form of radio frequency signal frames in the RF interface with electrical contacts
Implementation Method 2
receiving signals conveyed by an electrical connecting conductor
Data Source
AI summary
The invention relates to a method of communicating data with an electronic device, comprising the step of receiving signals conveyed by an electrical lead. The method is distinguished in that it comprises the following steps: fitting an RF radiofrequency interface with electrical terminals in the device, extracting signals from the electrical lead, and injecting signals resulting from the extracted signals, in the form of frames of radiofrequency signals in the RF interface with electrical terminals. The invention also relates to a radiofrequency communication device, a system comprising the device and a machine using the device.