Conditional Handover Configuration Using Reference and Delta Cells
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Solution Overview
Problem
The execution procedure for setting processing using a common reference configuration and delta configurations for conditional handover or secondary cell addition/change in wireless communication systems is unclear, necessitating an efficient method for managing connection configuration information.
Innovation Solution
A method involving a base station apparatus and a terminal apparatus that utilize obtaining, providing, and instructing means to efficiently manage reference and delta configurations for conditional handover or secondary cell addition/change, using identification information to reduce data amounts and optimize setting information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If setting processing is executed using a common reference configuration and delta configurations for conditional handover or secondary cell addition/change, then data transmission efficiency is improved, but the execution procedure becomes unclear and complex
Solution Approach 1:
The configuration information is segmented into a common reference configuration (applicable to multiple cells) and cell-specific delta configurations. This segmentation allows the terminal to process only the relevant delta configuration for the target cell rather than receiving complete configuration sets for all candidate cells, thereby improving setting processing efficiency while maintaining clear execution procedures through structured information organization.
Solution Approach 2:
The reference configuration serves as a universal template that can be applied to multiple candidate cells for conditional handover and secondary cell addition/change operations. This multi-functional reference configuration reduces redundant data transmission and simplifies the execution procedure by providing a standardized base that works across different cell scenarios.
2Manufacturing precision
If complete configuration information is transmitted for each candidate cell, then configuration accuracy is improved, but data transmission volume increases
Solution Approach 1:
The patent extracts only the cell-specific differences (delta configurations) from the complete configuration information, separating them from the common reference configuration. This extraction approach ensures that the terminal receives minimal necessary data for accurate configuration while significantly reducing the overall data transmission volume compared to sending complete configurations for each candidate cell.
Solution Approach 2:
Instead of providing uniform complete configurations for all candidate cells, the patent applies local quality by transmitting only the specific delta configurations that are relevant to each individual cell. This targeted approach maintains configuration accuracy for each cell while minimizing redundant data transmission, as each cell receives only its specific configuration differences rather than full configuration sets.
Data Source
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AI summary
A base station apparatus obtains information for generating setting information related to a plurality of cells for a conditional handover (CHO) or a conditional secondary cell addition or change (CPAC) in a terminal apparatus that is currently connected to the base station apparatus, the information including a reference configuration, which is common to two or more cells among the plurality of cells and to which identification information uniquely specifying the reference configuration is allocated, delta configurations that are respectively specific to the two or more cells, and the identification information of the reference configuration to be combined with the delta configurations, provides the terminal apparatus with the information and a condition under which the CHO or the CPAC is to be executed, and in a case where at least one configuration among the reference configuration and the delta configurations is to be deleted or changed, designates the at least one configuration and issues an instruction for the deletion or the change to the terminal apparatus.