Dual-SIM MR-DC Coordinated Leave for Transceiver Resource Sharing
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Solution Overview
Problem
Existing wireless communication systems with multi-radio dual connectivity (MR-DC) face challenges in efficiently managing transceiver resources when multiple connections are active, leading to a need for coordinated release of connections to enable further connections, particularly in scenarios involving multiple USIMs and different radio access technologies like 4G E-UTRAN and 5G NR.
Innovation Solution
A terminal device apparatus with a processor and memory, configured to transmit coordinated leave information to a network device, indicating the release of one of the two connections, using RRC messages or SCG-Failure-Information, allowing for temporary resource freeing and potential bearer remapping or suspension, enabling efficient use of transceiver resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple connections are maintained in MR-DC configuration, then connection diversity and service reliability are improved, but transceiver resource availability deteriorates
Solution Approach 1:
The system dynamically switches between dual connectivity and single connectivity modes based on resource availability requirements. The terminal device can transition from maintaining two simultaneous connections (improving reliability) to releasing one connection (freeing transceiver resources) through coordinated leave procedures, allowing adaptive resource management.
Solution Approach 2:
The invention changes the connectivity state parameter from dual connection to single connection through coordinated leave mechanisms. By modifying the connection state parameter, the system can free transceiver resources while maintaining service continuity through proper bearer remapping and suspension procedures.
2Adaptability or versatility
If one connection is released to free transceiver resources, then resource availability for further connections is improved, but connection diversity and service reliability deteriorate
Solution Approach 1:
The system performs preliminary actions to maintain service reliability before releasing connections. This includes bearer remapping to ensure data continuity, suspension of secondary cell groups with proper state saving, and coordination between master and secondary nodes to prevent service interruption during the transition from dual to single connectivity.
3Productivity
If coordinated leave procedures are implemented, then transceiver resource management efficiency is improved, but system complexity increases
Solution Approach 1:
The invention introduces coordinated leave information as an intermediary signaling mechanism between terminal device and network devices. This intermediary message enables automated resource management decisions, reducing manual intervention complexity while improving resource management efficiency through structured information exchange about connection release requirements.
Data Source
AI summary
Dual SIM operations with one SIM configured for Multi-radio dual connectivity. On request of a first SIM, the second SIM with dual connectivity, releases one of the two connections, by issuing an appropriate request to the network node.