Dual SIM UE Data Connection Management
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Solution Overview
Problem
Conventional dual SIM devices can only use one SIM card for packet switched services at a time due to modem limitations and high-level operating system constraints, limiting flexibility and user experience.
Innovation Solution
Implementing a user equipment (UE) with a processor and memory that determines desired operating characteristics and establishes simultaneous data connections using multiple always-on SIM cards, allowing dynamic selection and switching between primary and secondary data subscriptions for enhanced network utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional dual SIM devices use only one SIM card for packet switched services at a time, then modem limitations and operating system constraints are avoided, but flexibility and user experience are limited
Solution Approach 1:
The patent segments the data connection management by introducing separate data connection identifiers (first data connection identifier and second data connection identifier) for each SIM card. This allows independent management and selection of data connections from different SIM cards, enabling dual PS service support without requiring complex modem modifications or OS rewrites.
Solution Approach 2:
The patent introduces a data connection selection mechanism that acts as an intermediary between the application and the modem. This intermediary layer manages the complexity of multiple SIM cards and data connections, allowing the application to simply select a data connection while the intermediary handles the underlying complexity of modem limitations and OS constraints.
2Productivity
If dual SIM devices allow simultaneous use of multiple SIM cards for data connections, then user experience and load balancing are improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic data connection selection where the system can switch between different data connections based on real-time conditions. The data connection selection is not fixed but can be dynamically changed, allowing optimal load balancing and resource utilization across multiple SIM cards without requiring complex static configuration.
Solution Approach 2:
The patent changes the parameter of data connection availability by enabling multiple data connections to be simultaneously established and managed. Instead of a single fixed data connection, the system manages multiple data connections with different characteristics, allowing dynamic selection based on network conditions, user preferences, and load balancing requirements.
3Reliability
If always-on mode is used for SIM cards, then service availability is improved, but energy consumption increases
Solution Approach 1:
The patent enables periodic or on-demand activation of data connections rather than continuous operation. The system can establish data connections only when needed and maintain them in a ready state, allowing periodic service availability without requiring continuous energy consumption. The always-on mode can be activated periodically based on user needs rather than continuously.
Data Source
AI summary
Systems and methods are provided for enabling dual subscriber identity module (SIM) card usage for accessing packet switched services/networks. Each of the dual SIM cards operate in an always on mode and can be used to establish and maintain data connections over which the packet switched services/networks can be engaged. The dual SIM cards can be used in the aggregate or separately according to dynamic selection or fixed/mapped associations between an application requesting to access the packet switched services/networks and one or more of the dual SIM cards.