eUICC Architecture for Scalable eSIM Distribution and Management
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Solution Overview
Problem
Existing SIM card technologies face limitations such as supporting only a single SIM, requiring physical card exchange for different networks, and restricted access to network-specific entities, which hinders flexible and secure distribution and activation, especially for eSIMs.
Innovation Solution
The implementation of an electronic Universal Integrated Circuit Card (eUICC) and electronic Subscriber Identity Module (eSIM) that allows for multiple SIM emulation, secure transaction, and flexible distribution across devices, using a virtual or software-based approach with a secure eSIM broker network for scalable and secure eSIM management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional SIM card technology is used, then physical security and network authentication are ensured, but only a single SIM can be supported and physical card exchange is required for different networks
Solution Approach 1:
The patent creates a virtual copy of the SIM card functionality through software-based eSIM technology. Instead of requiring physical SIM cards, the system downloads and installs electronic SIM profiles that replicate all authentication and network access functions of traditional SIM cards in software form, enabling multiple SIMs to coexist virtually without physical exchange
Solution Approach 2:
The patent replaces the mechanical physical SIM card system with an electronic software-based system. The physical insertion and extraction of SIM cards is substituted by digital download, installation, and activation of eSIM profiles through wireless communication, eliminating the need for mechanical card handling while maintaining security and authentication functions
2Adaptability or versatility
If Dual-SIM devices are implemented, then multiple SIM support is achieved, but physical limitations and information consolidation issues persist
Solution Approach 1:
The patent implements a universal eSIM architecture where a single secure element in the device can host multiple SIM profiles simultaneously. This multi-functional system allows the device to switch between different network operators and SIM profiles without requiring multiple physical card slots, consolidating what would traditionally require separate physical SIM compartments into one unified software-based solution
Solution Approach 2:
The patent embeds multiple SIM profiles within a single secure element container. Rather than having separate physical SIM cards or slots for each network, the system nests multiple virtual SIM identities inside one secure hardware module, allowing hierarchical organization and management of multiple network credentials within a unified structure
3Reliability
If network-specific SIM activation is required, then secure authentication is maintained, but user flexibility and rapid deployment are restricted
Solution Approach 1:
The patent introduces an intermediary activation server that mediates between the user and network operators. This server securely manages SIM profile generation, encryption, and distribution, allowing users to activate service on multiple networks without directly contacting each operator. The intermediary maintains security protocols while enabling flexible, rapid deployment of eSIMs across different network providers
Solution Approach 2:
The patent implements preliminary provisioning of eSIM profiles before actual network activation is needed. SIM profiles can be pre-downloaded, pre-encrypted, and pre-configured in the device's secure element, ready for immediate activation. This allows users to have multiple network credentials prepared in advance, enabling rapid switching between networks without time-consuming activation procedures
Data Source
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AI summary
Methods and apparatus for large scale distribution of electronic access control clients, in one aspect, a tiered security software protocol is disclosed. In one exemplary embodiment, a server electronic Universal integrated Circuit Card (eUlCC) and client eUiCC software comprise a so-called "stack" of software layers. Each software layer is responsible for a set of hierarchical functions which are negotiated with its corresponding peer software layer. The tiered security software protocol is configured for large scale distribution of electronic Subscriber Identity Modules (eS!Ms).