Dual-SIM Wireless Communication Control for Multi-Network Registration
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Solution Overview
Problem
Existing wireless communication devices with multiple SIMs cannot simultaneously connect to networks of different communication carriers due to a lack of a specific mechanism for managing connections to multiple networks.
Innovation Solution
A wireless communication device and method that enables simultaneous connection to multiple networks by managing registration processes through a management device, allowing the device to switch between networks based on priority and roaming agreements, and utilizing a state management system to handle transitions and notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a UE includes only one transmission/reception unit, then the device complexity is reduced, but the UE cannot be simultaneously connected to networks of different communication carriers
Solution Approach 1:
The patent segments the network connection management by introducing a management device that handles multiple networks independently. The UE maintains a single transmission/reception unit but the management device segments the control plane connections to multiple networks, allowing simultaneous connectivity without duplicating hardware.
Solution Approach 2:
The management device acts as an intermediary between the UE and multiple communication networks. It receives paging information from different networks, manages registration states, and coordinates network switching, enabling the UE with a single transmission/reception unit to interact with multiple networks simultaneously through this mediating component.
2Reliability
If the UE is mounted with two SIMs and can be connected to two networks, then the adaptability is improved, but the UE cannot receive paging from another network while being connected to one network
Solution Approach 1:
The management device serves as an intermediary that consolidates paging information from multiple networks. Instead of requiring the UE to monitor multiple networks simultaneously (which would need multiple transmission/reception units), the management device receives paging from all networks and forwards relevant paging information to the UE through the single active connection.
Solution Approach 2:
The management device provides multi-functional capabilities by handling registration management, paging information aggregation, and network coordination for multiple communication carriers simultaneously. This universal management approach allows the system to maintain reliable paging reception across multiple networks without increasing UE hardware complexity.
3Reliability
If networks share paging information, then the paging reception reliability is improved, but the mechanism for managing UE connection to multiple networks is insufficient
Solution Approach 1:
The management device acts as a centralized intermediary that implements the paging information sharing mechanism. It receives paging from multiple networks, processes the information, and manages UE registration states across networks. This intermediary approach provides the missing connection management mechanism while maintaining reliable paging reception through information sharing.
Data Source
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AI summary
A wireless communication device (100) according to the present disclosure includes a control unit (140). The control unit (140) acquires a first PLMN list (40) on the basis of information stored in a first subscriber identity module (30A), selects a home PLMN from the first PLMN list (40), acquires a second PLMN ID on the basis of information stored in a second subscriber identity module (30B), performs a first registration request to a first management device (10A) which belongs to the home PLMN and manages registration of the wireless communication device (100) in a case where the second PLMN ID is not included in the first PLMN list (40), and performs, to the first management device (10A), a second registration request with information regarding the second PLMN included therein in a case where the second PLMN ID is included in the first PLMN list (40).