Dual-Connectivity UE Control for Fast SCG Deactivation
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Solution Overview
Problem
The existing 3GPP standard for dual connectivity (DC) in mobile communication systems faces challenges in promptly disabling wireless communication using a secondary cell group (SCG) when its wireless quality deteriorates, leading to resource and power consumption wastage due to delayed detection and deactivation.
Innovation Solution
User equipment (UE) and nodes are equipped with mechanisms to autonomously measure and evaluate wireless quality conditions, allowing for immediate deactivation of the SCG when quality thresholds are met, using notifications to synchronize with the network for efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the existing 3GPP standard procedure is used for SCG deactivation, then the network can control deactivation through RRC messages, but the deactivation time is delayed causing resource and power consumption wastage
Solution Approach 1:
The patent applies preliminary action by having the UE continuously monitor wireless quality against pre-configured thresholds before deactivation is needed. The UE autonomously evaluates whether deactivation conditions are met based on advance preparation of quality assessment mechanisms, enabling faster response without waiting for network instructions.
Solution Approach 2:
The patent implements self-service by enabling the UE to autonomously determine when SCG deactivation is necessary based on its own wireless quality measurements. The UE independently evaluates quality conditions and triggers deactivation without requiring continuous network control, thereby reducing the delay between quality deterioration and deactivation execution.
2Productivity
If the UE continuously monitors wireless quality, then faster deactivation can be achieved, but measurement and evaluation processes consume additional resources
Solution Approach 1:
The patent applies parameter changes by establishing specific wireless quality thresholds (such as reference signal received power or signal to interference plus noise ratio values) that trigger deactivation. By defining clear quantitative criteria, the system optimizes the balance between continuous monitoring and resource consumption, activating deactivation only when measured parameters cross predefined thresholds.
Data Source
AI summary
A user equipment performs wireless communication with a master node and a secondary node by using dual connectivity in a mobile communication system. The user equipment includes: a receiver configured to receive, from the master node, information indicating a wireless quality condition required for the user equipment when deactivation processing is performed for a secondary cell group of the secondary node; and a controller configured to measure wireless quality for the secondary cell group and evaluate whether the wireless quality condition is met. The controller performs the deactivation processing for the secondary cell group in response to the wireless quality condition being met.