Conditional PSCell Mobility Updates for Secondary-Node Cell Selection
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing conditional mobility, particularly in scenarios involving PSCell changes, leading to suboptimal user experience during SN mobility procedures.
Innovation Solution
The proposed solution involves modifying the configuration related to conditional PSCell mobility by improving the process for selecting a suitable SN cell, ensuring a smoother service experience during mobility procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conditional mobility configuration is maintained as is, then the mobility procedure can be completed, but the user experience deteriorates due to suboptimal cell selection
Solution Approach 1:
The network configures conditional mobility parameters in advance before the actual mobility event occurs. The UE evaluates candidate cells against pre-configured criteria and prepares mobility execution beforehand, ensuring optimal cell selection while maintaining procedure reliability.
Solution Approach 2:
The conditional mobility configuration allows dynamic adjustment of mobility parameters based on real-time radio conditions. The UE can selectively apply different conditional mobility configurations for different candidate cells, adapting to changing network conditions to improve user experience.
2Ease of operation
If the conditional mobility configuration is modified to improve cell selection, then the user experience improves, but the configuration complexity increases
Solution Approach 1:
The mobility configuration is segmented into multiple independent conditional mobility configurations, each associated with specific candidate cells or cell groups. This allows granular control over cell selection without requiring complex global reconfiguration, simplifying the overall system while improving user experience.
Solution Approach 2:
The invention modifies specific mobility parameters (such as cell selection criteria, measurement thresholds, and execution conditions) within the conditional mobility configuration to optimize cell selection. These targeted parameter changes improve user experience without requiring complete redesign of the mobility framework.
3Adaptability or versatility
If multiple conditional mobility configurations are supported, then adaptability to different scenarios improves, but the device complexity increases
Solution Approach 1:
The conditional mobility configuration framework is designed with universal structures that can accommodate multiple scenarios using the same basic mechanism. Different scenarios are handled by configuring different parameters within the same framework rather than requiring separate mechanisms, thereby improving adaptability while controlling complexity.
Data Source
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AI summary
The present disclosure relates to modifying configuration related to conditional mobility in wireless communications. According to an embodiment of the present disclosure, a method performed by a master node (MN) serving a wireless device with a secondary node (SN) in a dual connectivity (DC) in a wireless communication system comprises: transmitting, to the wireless device, a conditional primary serving cell (PSCell) mobility command for a first cell in the SN; transmitting, to the SN, a message for requesting a modification of the conditional PSCell mobility command for the first cell, wherein the message comprises an identity (ID) of the wireless device, a target cell ID of the first cell for which the conditional PSCell mobility is to be modified, and an indication to modify the conditional PSCell mobility command for the first cell; receiving, from the SN, an acknowledgement (ACK) message for the modification of the conditional PSCell mobility command for the first cell; and transmitting, to the wireless device, information related to the modification of the conditional PSCell mobility command for the first cell.