Master Cell Group Reconfiguration for Secondary Cell Group Changes
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Solution Overview
Problem
Current 5G network configurations, particularly in multi-radio dual connectivity scenarios, lack efficient mechanisms for coordinating and optimizing the management of master and secondary cell group configurations, leading to suboptimal resource utilization and potential service interruptions.
Innovation Solution
Introduce new indicators in the UE Context Modification Request message to signal SCG addition, modification, or release events between the master node and the secondary node, enabling the master node to adjust its configuration accordingly and optimize resource allocation based on changes in the secondary cell group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If new indicators are introduced in UE Context Modification Request message to signal SCG addition, modification, or release events, then resource management efficiency and network performance are improved, but message complexity and signaling overhead increase
Solution Approach 1:
The patent segments the SCG configuration management by introducing specific indicators (scg-ToAddList, scg-ToReleaseList, scg-ToModifyList) that separately identify different types of SCG changes. This segmentation allows the master node to process different SCG modification scenarios independently, improving resource management efficiency while keeping each indicator's function simple and well-defined.
Solution Approach 2:
The patent introduces an intermediary signaling mechanism where the master node sends indicators to the secondary node, which then processes the actual SCG configuration changes. This intermediary approach allows complex SCG management operations to be coordinated through standardized indicators, improving overall system efficiency while distributing the complexity across multiple nodes rather than concentrating it in one message.
2Reliability
If the master node adjusts its configuration in response to SCG changes, then service continuity and network reliability are improved, but configuration management complexity and processing time increase
Solution Approach 1:
The patent implements a feedback mechanism where the master node receives indicators about SCG changes and automatically adjusts its configuration in response. This closed-loop feedback ensures service continuity by maintaining coordinated configurations between master and secondary nodes, while the automated nature of the feedback process reduces the need for complex manual configuration management.
Solution Approach 2:
The patent enables preliminary configuration adjustments by the master node before actual SCG changes take effect. By receiving advance indicators about upcoming SCG additions, modifications, or releases, the master node can prepare its configuration in advance, ensuring seamless service continuity while simplifying the actual change execution process.
3Productivity
If real-time monitoring of SCG configuration changes is implemented, then resource allocation optimization and network performance are improved, but signaling overhead and processing load increase
Solution Approach 1:
The patent extracts only the essential SCG configuration change information into compact indicators (scg-ToAddList, scg-ToReleaseList, scg-ToModifyList) that are transmitted between nodes. By taking out only the critical change data rather than transmitting complete configuration sets, the system achieves real-time monitoring capability for resource optimization while minimizing signaling overhead to only the necessary update information.
Data Source
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AI summary
According to some embodiments, a network node (QQ160) including a master node-distributed unit, MN-DU, and a MN-centralized unit, MN-CU, in communication with each other is provided. The network node (QQ160) includes processing circuitry (QQ170) configured to receive, at the MN-DU, first signalling that request for a master cell group, MCG, configuration associated with a wireless device (QQ110) to be modified, the first signalling indicating that the request for the MCG configuration modification is based at least on a change in secondary cell group, SCG, configuration associated with the wireless device (QQ110), and modify, at the MN-DU, the MCG configuration based at least on the change in the SCG configuration associated with the wireless device (QQ110).