Dual Mobile Terminations With Coordinated PLMN Registration
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Solution Overview
Problem
Existing mechanisms for traffic steering and switching between 3GPP and non-3GPP access networks are inadequate due to network congestion, coverage limitations, and technical issues, leading to suboptimal user experience and limited data transmission efficiency.
Innovation Solution
A dual-MT device configured for dual registration and Multi-Access Steering Switching and Splitting (MASSS) with primary and secondary MTs, enabling coordinated PLMN selection, mobility management, and inter-MT communication for efficient network registration and updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single MT is used for network registration and traffic steering, then the device complexity is reduced, but the reliability and service availability are insufficient when facing network congestion, coverage limitations, or technical issues
Solution Approach 1:
The patent divides the mobile termination function into multiple independent MTs (first MT and second MT), each capable of independent network registration and traffic steering. This segmentation allows one MT to fail over to another without affecting the entire device, thereby improving service availability while maintaining manageable complexity through modular design
Solution Approach 2:
The patent introduces dynamic parameters for MT activation and deactivation based on network conditions. The system can change the operational state of MTs according to factors like network congestion, coverage quality, and technical issues, enabling flexible adaptation to varying service requirements without permanent complex configuration
2Adaptability or versatility
If multiple access networks are supported for traffic steering, then the adaptability and user experience are improved, but the coordination complexity between MTs increases
Solution Approach 1:
The patent introduces an inter-MT coordination function as an intermediary component that manages communication and coordination between multiple MTs. This mediator handles the complexity of coordinating traffic steering decisions, registration updates, and network selection across MTs, thereby enabling multi-network adaptability without proportionally increasing overall system complexity
Solution Approach 2:
The patent implements preliminary configuration and pre-establishment of MT roles and coordination protocols. By preparing the coordination framework in advance through configuration parameters and predefined interaction protocols, the system reduces real-time coordination complexity while maintaining high adaptability to different access network conditions
3Productivity
If automatic PLMN selection is implemented, then the productivity and registration speed are improved, but the measurement precision and selection accuracy may be compromised
Solution Approach 1:
The patent implements feedback mechanisms in the automatic PLMN selection process where MTs exchange information about network conditions, signal quality, and selection criteria. This feedback loop allows the system to maintain high registration speed through automation while improving selection accuracy by continuously adjusting decisions based on real-time network measurements and conditions
Data Source
AI summary
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products are provided for selecting mobile networks for two mobile terminations (MTs) in a device. For example, the first MT, having primary status, selects a mobile network and requests registration. It then activates the second MT, of secondary status, and provides it with information. The second MT selects one or more candidate mobile networks based on this information and provides data indicative of the candidate network to the first MT. The first MT provides additional information to the second MT, which then selects a mobile network based on this information and requests registration. The method also includes performing registration updates with the mobile networks, which can be triggered by a time period elapsing or an event occurring. Communications between the MTs may be performed using an inter-MT coordination function of the device.