Dynamic VPLMN List Selection for Roaming Quota Optimization
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Solution Overview
Problem
Current methods for updating a list of preferred networks in a terminal's secure element over-the-air are inflexible, leading to potential misuse or underuse of roaming quotas due to periodic updates and lack of real-time adjustments.
Innovation Solution
A computer-implemented method where an OTA platform receives location data and a set of preferred networks with associated weighting factors, selects one list using location data and random values, and sends an encrypted list to the terminal, utilizing optimization functions and machine learning to adjust weighting factors based on actual and target roaming quota usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single VPLMN list is provisioned in the OTA server with periodic updates (every several hours), then the system maintains operational simplicity and fast response at terminal registration, but it leads to misuse or underuse of roaming quotas due to inability to adjust in real-time
Solution Approach 1:
The patent applies dynamics by transitioning from a static, periodically updated VPLMN list to a dynamic selection mechanism. Multiple VPLMN lists are maintained in the OTA server, each with different validity periods and weighting factors. The system dynamically selects which list to provide to terminals based on current time, location data, and weighting factors, enabling real-time adaptation to changing roaming quota conditions while maintaining fast response at registration.
Solution Approach 2:
The patent changes the parameter of list selection by introducing weighting factors associated with different VPLMN lists. Instead of providing a single fixed list, the system uses location data and weighting factors to determine which list should be provided to each terminal. This parameter-based selection enables flexible, real-time optimization of roaming quota usage without requiring periodic system-wide updates.
2Device complexity
If the SoR device refreshes VPLMN lists periodically with several hours interval, then the system reduces computational complexity and network load, but it causes quota misuse due to lack of real-time quota status reflection
Solution Approach 1:
The patent applies preliminary action by pre-computing multiple VPLMN lists with different validity periods and weighting factors before they are needed. The SoR device prepares these lists in advance based on predicted or target quota usage scenarios, rather than reacting to real-time conditions. This allows the OTA server to quickly select from pre-prepared lists based on current location and weighting factors, maintaining low computational complexity while improving quota optimization accuracy.
3Adaptability or versatility
If multiple VPLMN lists with different validity periods are maintained in the OTA server, then the system enables flexible and optimized selection based on location and weighting factors, but it increases the complexity of list management and selection logic
Solution Approach 1:
The patent applies feedback by using location data as input to the selection function, which then chooses the appropriate VPLMN list based on current conditions. The weighting factors associated with each list provide feedback mechanisms that guide the selection process. This feedback-based approach enables flexible adaptation to different locations and conditions while maintaining a systematic, rule-based selection process that manages complexity through structured decision logic.
Data Source
AI summary
Provided is a method for manufacturing a metal smart card comprising a metal insert having a peripheral edge extending to the peripheral edge of the card and at least one printed cover sheet. The method comprises the steps of assembling a printed support sheet and at least one insert using an assembly tray comprising elements for positioning the support sheet and each insert, and extracting each metal smart card from the printed support sheet by cutting or machining the sheet around a periphery of the insert. Other embodiments disclosed.