Cell Configuration for Conditional Handover in Wireless Systems
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Solution Overview
Problem
Current methods lack an efficient approach for configuring target secondary cells during conditional handover in next-generation wireless communication systems, particularly when a user equipment (UE) has multiple serving cells, leading to increased handover failure rates and poor user experience due to delayed data transmission rate optimization.
Innovation Solution
A cell configuration apparatus and method that enables the UE to receive configuration information from a network device, allowing for the rapid configuration of target primary and secondary cells by satisfying specific conditions, thereby optimizing handover processes and reducing data transmission rate impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conditional handover is implemented with multiple serving cells, then handover reliability is improved, but device complexity increases due to the need to manage configuration information for multiple target cells
Solution Approach 1:
The patent segments the cell configuration information into separate parts: target PCell configuration information and target SCell configuration information. This segmentation allows the UE to process and manage each cell type independently, reducing the overall complexity while maintaining reliable handover with multiple serving cells
Solution Approach 2:
The patent applies preliminary action by pre-configuring the UE with both target PCell and target SCell configuration information before the handover is executed. This allows the UE to rapidly switch to multiple cells simultaneously when handover conditions are met, improving handover reliability without requiring complex real-time configuration management
2Productivity
If target secondary cells are configured rapidly during handover, then productivity is improved, but device complexity increases due to additional configuration management
Solution Approach 1:
The patent pre-configures target SCell information along with target PCell information before handover execution. This preliminary configuration enables the UE to rapidly activate multiple cells simultaneously, improving data transmission rate without requiring complex real-time configuration procedures
Solution Approach 2:
The patent provides configuration information for multiple potential target SCells beyond what may be immediately needed. This excessive configuration approach allows the UE to rapidly select and activate appropriate SCells based on current channel conditions, improving productivity while managing complexity through selective activation
Data Source
AI summary
A cell configuration apparatus and method. By receiving configuration information on candidate cells from the network device at the source side, when a candidate cell satisfies a condition for performing conditional handover, a target primary cell and target secondary cells are configured according to the configuration information; or, when or after handover is completed, information on cells having best quality or indication of the information on cells having best quality is transmitted to a network device at the target side, configuration information on target secondary cells is received from the second network device, and the target secondary cells are configured according to the configuration information.