Simulated USIM Ad Hoc Subscription Management
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Solution Overview
Problem
Users face high roaming charges when traveling outside their primary cellular network coverage area, as existing Subscriber Identity Module (SIM) technologies restrict access to local networks unless they are part of the primary or secondary network provider's core coverage, limiting subscription options and failing to provide dynamic ad hoc connectivity.
Innovation Solution
A wireless device system that allows ad hoc subscription management by accepting new credentials from local networks, using a simulated Universal Subscriber Identity Module (USIM) and Service Fulfillment Server System (SFSS) to connect to local mobile server systems, enabling access to local networks without roaming charges and providing customizable subscription plans based on user preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a SIM card is configured with credentials from a primary network provider, then the device can access the primary network reliably, but the user incurs high roaming charges when traveling outside the primary network coverage area
Solution Approach 1:
The SIM card is configured to store multiple sets of credentials (primary network provider credentials and alternative network provider credentials), enabling the device to access multiple different wireless networks. This multi-functionality allows the SIM to serve as both a primary network access card and an alternative network access card, eliminating the need to pay roaming charges when the primary network is unavailable.
2Object-affected harmful factors
If the SIM card stores multiple credentials for different network providers, then the user can access alternative networks without roaming charges, but the device complexity increases
Solution Approach 1:
The SIM card's credential storage is segmented into distinct credential sets, with each set containing authentication information for a specific network provider. The SIM card includes multiple credential storage areas that can be independently managed, allowing the device to select and use the appropriate credential set based on network availability and user preferences without requiring complex reconfiguration.
3Adaptability or versatility
If the system allows ad hoc subscription to local networks, then users gain flexible access options in coverage areas, but the subscription management system becomes more complex
Solution Approach 1:
The system pre-configures the SIM card with alternative network provider credentials before the user travels. The device includes pre-established subscription profiles that contain authentication information and service parameters for alternative networks. When the device detects that the primary network is unavailable, it automatically activates one of the pre-configured subscription profiles without requiring real-time subscription negotiation or complex management decisions during travel.
Data Source
AI summary
Herein disclosed is an embodiment of a system for connecting a wireless device to a local network of local mobile server systems on an ad hoc basis after the wireless device has left the manufacturer. The system may have instructions, which when invoked cause the implement a process including at least receiving, at the wireless device, credential data from the local network of local mobile server systems. The system may also write the credential data to a device memory system, wherein the credentials are received on an ad hoc basis after the wireless device has left the manufacturer.