High-Capacity SIM Memory Controller Partitioning
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Solution Overview
Problem
Current technologies do not enable mobile network operators (MNOs) to remotely and independently control the memory usage on high-capacity SIM cards, which are integrated with the SIM card function, lacking direct connection and stand-alone memory management capabilities.
Innovation Solution
Implementing a high-capacity SIM card with a memory controller that allows for dynamic partitioning and remote control of access modes, enabling MNOs to define and change partition usage profiles, including read, write, and execute permissions, independent of host device software, through a mobile network connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a high-capacity SIM card is provided with large memory storage, then the storage capacity is improved, but the cost increases
Solution Approach 1:
The memory storage area of the high-capacity SIM card is divided into multiple partitions, each with distinct usage profiles and access control characteristics. This segmentation allows selective allocation of storage resources based on different operational requirements, enabling cost-effective utilization of the increased capacity.
Solution Approach 2:
The invention introduces the concept of usage profiles that can be dynamically changed for different partitions. By modifying parameters such as read/write/execute permissions and allocation ratios, the system optimizes the cost-performance ratio of the enhanced storage capacity without requiring proportional increases in hardware cost.
2Quantity of substance
If memory storage area is increased on SIM card, then the storage capacity is improved, but the control capability by MNO deteriorates
Solution Approach 1:
By dividing the enlarged memory storage into multiple partitions, each partition can be independently controlled and managed by the MNO through usage profiles. This segmentation maintains and enhances MNO control capability despite the increased total storage capacity.
Solution Approach 2:
The system implements remote control mechanisms where the MNO can monitor and adjust partition usage profiles in real-time. This feedback capability ensures that MNO maintains full control over memory usage patterns, allowing dynamic optimization of the expanded storage capacity.
3Adaptability or versatility
If partition usage profiles are made changeable remotely, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The memory controller is designed with multi-functionality, handling both local memory management operations and remote control functions through a unified architecture. This universal design enables remote profile changes without proportionally increasing device complexity.
Solution Approach 2:
The invention introduces a communication interface and control protocol that acts as an intermediary between the MNO's remote system and the SIM card's memory controller. This intermediary layer simplifies the overall system architecture by abstracting the complexity of remote control mechanisms.
4Productivity
If direct connection between SIM card and storage device is established, then the control efficiency is improved, but the device complexity increases
Solution Approach 1:
The invention merges the SIM card functionality with the memory storage control functions into a single integrated unit. By combining these previously separate components, the system achieves direct control connections and improved efficiency while managing complexity through functional integration rather than adding separate control modules.
Data Source
AI summary
A high-capacity SIM card includes: memory having at least one partition and a memory controller configured: to control at least two modes of access to one partition of the partitions, only one of the modes being a currently-active mode; and to allow the currently-active mode to be operationally changed remotely. Preferably, the memory controller controls operability of reading data, writing data, erasing data, and/or executing code, according to the currently-active mode. Preferably, the memory controller also controls storage of data in the card based on access-control data delivered to the card. Preferably, the memory controller is configured to reversibly operationally change, for one partition, which mode is the currently-active mode. Preferably, the memory controller prohibits change of the currently-active mode by a host device of the card.