Master Node SCG Suspension Independent of MCG
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Solution Overview
Problem
Current wireless communication networks lack the ability to independently suspend or resume Secondary Cell Group (SCG) configurations, leading to inefficient resource management and potential connection interruptions due to SCG-related radio link failures.
Innovation Solution
A method and system that allow a Master Node (MN) to independently manage SCG operations, including suspension and resumption, without affecting Master Cell Group (MCG) configurations, enabling more efficient resource allocation and improved network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SCG configuration is suspended or resumed jointly with MCG operation, then connection stability is maintained, but resource management efficiency deteriorates and signaling overhead increases
Solution Approach 1:
The patent segments the cell group operations by introducing independent suspension and resumption mechanisms for SCG and MCG. The Master Node can now manage SCG configuration independently from MCG, allowing separate control decisions. This is achieved through independent indication messages sent to the UE for SCG suspension/resumption, distinct from MCG operations, thereby resolving the contradiction between connection stability and resource management efficiency.
2Productivity
If SCG operations are managed independently from MCG, then resource allocation efficiency improves and signaling overhead reduces, but system complexity increases
Solution Approach 1:
The patent introduces an intermediary indication mechanism where the Master Node sends specific indication messages to the UE to trigger independent SCG suspension or resumption. This intermediary approach allows independent SCG management without requiring complex coordination protocols between network nodes, as the UE autonomously processes the indication and executes the appropriate action, thus improving resource allocation efficiency while limiting system complexity growth.
3Device complexity
If joint suspension/resumption of SCG and MCG is used, then device complexity is minimized, but latency increases due to unnecessary operations
Solution Approach 1:
The patent applies segmentation by separating SCG suspension/resumption operations from MCG operations. The Master Node can now determine and execute SCG configuration changes independently based on specific conditions (e.g., radio link quality, resource availability) without being constrained by MCG state. This segmented approach eliminates unnecessary joint operations, reducing latency while maintaining manageable device complexity through standardized procedure extensions.
Data Source
AI summary
A Master Node (MN) 110 and a method therein for handling of a Secondary Cell Group (SCG) for a UE 120 operable in a dual connectivity mode with the MN and a Secondary Node (SN) 111 operating in a network 100. A Master Cell Group (MCG) is 5 associated with the MN and the SCG is associated with the SN. The MN decides to perform a first operation relating to a suspension or a resumption of the SCG independently from a second operation relating to a suspension or a resumption of the MCG. The MN transmits, to the UE, an indication indicating the first operation and indicating the second operation. Further, the MN transmits, to the SN, an indication 10 indicating the first operation relating to the suspension or the resumption of the SCG.