Autonomous SCell Deactivation During SCG Change
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Solution Overview
Problem
In wireless communication systems, particularly in LTE, the existing technologies face challenges in efficiently managing Secondary Cells (SCells) during Secondary Cell Group (SCG) change procedures, leading to inefficiencies and potential service disruptions.
Innovation Solution
A method and device for User Equipment (UE) to autonomously deactivate SCells during SCG change procedures, ensuring seamless transitions and maintaining connectivity by managing SCell activation and deactivation timers and RRC signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE maintains all configured SCells during SCG change procedure, then the connectivity is preserved, but the service interruption increases and resource allocation becomes inefficient
Solution Approach 1:
The UE autonomously deactivates SCells before completing the SCG change procedure. By performing this action in advance, the UE prevents potential service interruptions and optimizes resource allocation during the transition, while still maintaining connectivity through the PCell and any remaining active SCells.
2Loss of time
If the UE autonomously deactivates SCells during SCG change, then the service interruption is minimized, but the complexity of managing SCell activation and deactivation increases
Solution Approach 1:
The UE performs autonomous deactivation of SCells without requiring explicit network control for each deactivation action. This self-service mechanism reduces service interruption by enabling proactive SCell management, while the UE handles the complexity internally through standardized procedures defined in the patent.
3Manufacturing precision
If the network controls every SCell activation and deactivation, then the control precision is high, but the procedure complexity increases and efficiency decreases
Solution Approach 1:
Instead of controlling every SCell activation and deactivation individually, the network provides high-level control through the SCG change procedure, allowing the UE to autonomously manage SCell deactivation. This partial action approach maintains sufficient control precision while significantly improving procedure efficiency and reducing complexity.
Data Source
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AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for deactivating SCells during SCG change procedure in the wireless communication system, the method comprising: configuring a PCell (Primary Cell) in a master base station (BS) and a PSCell (Primary-Secondary Cell) and one or more SCells (Secondary Cells) in a secondary BS; receiving an RRC (Radio Resource Control) reconfiguration message indicating a SCG (Secondary Cell Group) change procedure while maintaining a connection with the master base station; and deactivating the one or more SCells in the secondary BS if the PSCell is not changed by the SCG change procedure.