UICC Bidirectional Data Sync for Mobile Network Backup
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Solution Overview
Problem
Current identification data modules in mobile radio networks, such as SIM and UICC cards, face limitations in data access and management, including unidirectional communication and high development and storage costs due to brand-specific data, and the need for data preservation during card replacements or losses.
Innovation Solution
A method enabling bidirectional data comparison between local memory of identification data modules and a central unit, allowing for data backup, synchronization, and efficient data management, eliminating the need for brand-specific memory allocation and ensuring data availability across card replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If unidirectional communication (OTA) is used to update SIM/UICC cards, then data can be transmitted from the central unit to the card, but the card cannot send data back to the central unit for backup
Solution Approach 1:
The patent inverts the traditional unidirectional communication model by implementing bidirectional communication, allowing the identification data module to send data back to the central unit. This inversion enables complete memory imaging for backup purposes while maintaining system manageability.
Solution Approach 2:
The patent introduces feedback mechanisms where the identification data module can transmit data back to the central unit. This feedback loop enables the central unit to receive and store complete memory images for backup and restoration purposes.
2Adaptability or versatility
If brand-specific data is stored on SIM/UICC cards, then customer service requirements are met, but development and storage costs increase significantly
Solution Approach 1:
The patent segments data storage between the identification data module and the central unit. Only essential authentication data is stored on the card, while brand-specific and service-related data are managed centrally, reducing card storage requirements and development costs.
Solution Approach 2:
The patent makes the identification data module universal by removing the need for brand-specific customization. A single card design can serve multiple network operators and services, with brand-specific data being downloaded as needed from the central unit.
3Reliability
If data is stored locally on SIM/UICC cards, then data is available offline, but data loss occurs when cards are lost or defective
Solution Approach 1:
The patent implements beforehand cushioning by creating complete memory images of the identification data module and storing them in the central unit before any loss or damage occurs. This backup mechanism ensures data recovery is possible even if the original card is lost or becomes defective.
4Ease of operation
If individual data parameters are updated using OTA methods, then some data can be modified remotely, but access to stored data remains limited
Solution Approach 1:
The patent introduces a bidirectional communication intermediary that enables comprehensive data access between the identification data module and the central unit. This intermediary architecture allows both remote updates and complete data retrieval, overcoming the limitations of traditional unidirectional OTA methods.
Data Source
Figure 1
AI summary
A characteristic module is provided in a mobile terminal (20) e.g. mobile telephone for bidirectional data synchronization with a central unit (30) via telecommunication network. The necessary data for authentication of user of mobile terminal is provided in universal integrated circuit card (UICC) (10). The communication between UICC card and mobile terminal is established by bearer independent protocol. The communication between UICC card and central unit is established by card application toolkit transport protocol (CAT-TP). Independent claims are included for the following: (1) mobile terminal; (2) telecommunication network; and (3) application for data alignment.