Master Node Reference Configuration Generation for Signaling Overhead Reduction
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Solution Overview
Problem
In Dual Connectivity scenarios, the coordination of reference configurations between network nodes is complex, particularly during Selective Activation of Primary Secondary Cells (SAPC), leading to increased signaling overhead and potential invalidity of delta configurations.
Innovation Solution
The Master Node (MN) acts as an anchor point for generating and maintaining reference configurations, based on cell configurations received from secondary nodes, and transmits these along with delta configurations to terminal devices or serving secondary nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If each secondary node independently manages its own reference configuration for candidate PSCells, then each node can autonomously configure cells, but signaling overhead increases and coordination complexity increases
Solution Approach 1:
The patent merges the reference configuration management function to a single master node, which generates and distributes the reference configuration to all secondary nodes. This eliminates the need for each secondary node to independently manage reference configurations, thereby reducing signaling overhead and coordination complexity while maintaining autonomous cell configuration capabilities.
Solution Approach 2:
The master node acts as an intermediary that generates the reference configuration and distributes it to all secondary nodes. This intermediary approach centralizes the configuration management, reducing the signaling overhead that would otherwise be required for distributed configuration management among multiple secondary nodes.
2Adaptability or versatility
If multiple secondary nodes prepare candidate PSCells with different reference configurations, then cell preparation flexibility increases, but delta configuration validity decreases
Solution Approach 1:
The patent ensures that all secondary nodes use the same reference configuration (generated by the master node) when preparing candidate PSCells. This homogeneity in reference configuration across all nodes ensures that delta configurations remain valid and reliable, while still allowing flexibility in which candidate PSCell is selected and activated based on network conditions.
3Productivity
If reference configuration is distributed to all secondary nodes, then each node can independently prepare cells, but coordination complexity increases
Solution Approach 1:
The master node serves as an intermediary that generates and distributes the reference configuration to all secondary nodes. This centralized approach simplifies coordination by having a single point of control for reference configuration management, reducing the coordination complexity that would arise from distributed configuration management while maintaining efficient cell preparation capabilities.
Data Source
AI summary
Embodiments of the present disclosure relate to apparatuses, methods, and computer readable storage media for master node centric reference configuration generation. In the methods, a master node receives, from at least one secondary node, respective cell configurations of one or more cells prepared as candidate primary secondary cells for a terminal device. Then, the master node generates a reference configuration for the one or more cells based on the respective cell configurations, and obtains respective delta configurations for the one or more cells. A delta configuration represents a difference between a cell configuration of a respective cell and the reference configuration. Moreover, the master node transmits the reference configuration and the respective delta configurations to at least one of the terminal device, or a serving secondary node of the terminal device. Thereby, the proposed solutions can advantageously minimize the signaling overhead.