PSCell Preconfiguration Coordination in MR-DC Dual Connectivity
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Solution Overview
Problem
In Multi-RAT Dual Connectivity (MR-DC) operations, there is a lack of effective coordination and resource management between the master node (MN) and secondary node (SN) for PSCell preconfiguration, leading to potential configuration conflicts and inefficiencies in managing conditional PSCell changes.
Innovation Solution
A cell management method and apparatus that enables collaborative management of candidate PSCells/SCGs between master and secondary nodes, allowing for conditional PSCell change (CPC) operations, including query, pre-configuration, and release of candidate PSCells/SCGs to optimize resource usage and reduce conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the SN performs local PSCell preconfiguration transparent to MN, then the PSCell change can be executed quickly, but the coordination and control between MN and SN deteriorates leading to configuration conflicts
Solution Approach 1:
The patent implements a feedback mechanism where the SN reports preconfigured PSCell information to the MN, and the MN provides guidance on whether to retain or release these configurations. This feedback loop ensures that local preconfiguration operations maintain proper coordination and avoid conflicts while preserving execution speed.
Solution Approach 2:
The patent introduces the MN as an intermediary that coordinates between the SN's local preconfiguration operations and the overall system state. The MN receives reports from SN, makes coordination decisions, and manages the release of PSCell configurations, ensuring that local actions do not create conflicts.
2Ease of operation
If the SN autonomously manages candidate PSCells without MN involvement, then the operational complexity for MN is reduced, but the resource management efficiency and conflict resolution capability deteriorates
Solution Approach 1:
The patent segments the PSCell management responsibilities: the SN handles local preconfiguration and reporting (operational simplicity), while the MN handles coordination, decision-making, and resource management (efficiency and conflict resolution). This segmentation allows each node to focus on appropriate tasks without excessive complexity.
3Adaptability or versatility
If PSCell preconfiguration is performed without MN knowledge, then the SN has greater autonomy, but configuration conflicts and resource waste increase
Solution Approach 1:
The patent enables the SN to perform preliminary PSCell preconfiguration actions autonomously, but requires the SN to report these configurations to the MN. The MN then coordinates the overall resource allocation, ensuring that preliminary actions taken by the SN do not lead to conflicts or waste while preserving the benefits of autonomous preconfiguration.
Data Source
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AI summary
Disclosed in the present specification are a cell management method and apparatus, a device and a storage medium. The cell management method is used in a first communication node and comprises: sending a first dual-connection control message to a second communication node, wherein the first dual-connection control message is used for instructing the second communication node to manage related information of a conditional candidate target PSCell; and receiving the related information of the conditional candidate target PSCell sent by the second communication node.