Secondary Node Change Using UE History in Dual Connectivity
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Solution Overview
Problem
In existing 5G network deployment, the decision for secondary node change in dual connectivity scenarios relies solely on signal quality, lacking comprehensive information for optimal selection, which can lead to suboptimal network performance.
Innovation Solution
Implementing an information management method that records and transmits history information for user equipment, allowing the secondary node to select a better target node based on historical data, enhancing the robustness of the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If secondary node change decision is made based only on signal quality, then the decision process is simple and fast, but the network performance and stability are suboptimal
Solution Approach 1:
The patent applies preliminary action by recording history information for user equipment in advance before secondary node change decisions are made. The master node collects and stores historical data including signal quality metrics, handover history, and user equipment behavior patterns prior to needing making a node change decision. This pre-collected information is then utilized when selecting a target secondary node, enabling more informed decisions without increasing the complexity of the decision-making process itself.
Solution Approach 2:
The patent implements feedback by continuously monitoring and recording history information about user equipment performance and behavior. The master node maintains a feedback loop where historical data from previous secondary node operations is fed back into the node selection process. This feedback mechanism allows the system to learn from past performance and make progressively better decisions about secondary node selection, improving network reliability while managing information complexity through structured data collection.
2Reliability
If history information is recorded and transmitted during secondary node change, then the robustness of dual connectivity system is improved, but the signaling overhead and processing load increase
Solution Approach 1:
The patent applies the taking out principle by extracting only the essential and most relevant history information from the complete set of available data. Instead of transmitting all possible historical parameters, the master node selectively extracts key metrics such as signal quality trends, handover success rates, and user equipment stability indicators. This extraction approach maintains system robustness by including the most critical information while reducing signaling overhead by excluding redundant or less important data elements.
Solution Approach 2:
The patent implements partial action by transmitting a subset of history information rather than complete historical records. The master node sends selectively relevant historical data that is sufficient for making robust secondary node change decisions without the excessive burden of complete information transfer. This partial information approach achieves the necessary level of system robustness while minimizing the energy consumption and signaling overhead associated with full data transmission.
Data Source
AI summary
An information management method, a secondary node (SN) changing method, a node and a non-transitory computer-readable storage medium are disclosed. The information management method may include: recording, after a secondary node is added to user equipment, history information for the user equipment by the secondary node.