Terminal CSI Reporting for Non-Serving Cells
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Solution Overview
Problem
Current radio communication systems, particularly in the context of Next-Generation Mobile Communication Systems like NR, face challenges in performing appropriate Channel State Information (CSI) reporting for non-serving cells, as existing solutions have not fully studied L1 CSI reporting with synchronization signal blocks of non-serving cells.
Innovation Solution
A terminal equipped with a receiving section to receive separate CSI report configurations for serving and non-serving cells, and a control section to manage CSI reporting accordingly, allowing for distinct or combined CSI report configurations for both types of cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate CSI report configurations are provided for serving and non-serving cells, then CSI reporting accuracy for non-serving cells is improved, but system complexity increases
Solution Approach 1:
The patent divides CSI report configurations into separate configurations for serving cells and non-serving cells. Each configuration type has specific parameters and reporting requirements tailored to its purpose, allowing precise control over CSI reporting for each cell type without mixing configuration parameters.
Solution Approach 2:
The patent applies different configuration qualities and parameters locally to serving and non-serving cells. Serving cell configurations include parameters for detailed channel state feedback, while non-serving cell configurations focus on specific measurement and reporting aspects, optimizing each for its specific function.
2Reliability
If L1 CSI reporting with SSB of non-serving cell is implemented, then mobility and handover performance is improved, but specification complexity and implementation difficulty increase
Solution Approach 1:
The patent configures L1 CSI reporting parameters and SSB measurement settings in advance through higher-layer signaling before mobility events occur. This preliminary configuration enables the UE to perform accurate CSI reporting for non-serving cells during handover scenarios without requiring complex real-time specification interpretation.
3Reliability
If distinct CSI report configurations are used for serving and non-serving cells, then communication reliability is improved, but control signal overhead increases
Solution Approach 1:
The patent designs CSI report configurations that can serve multiple purposes. Certain configuration parameters and reporting structures are made universal and can be applied to both serving and non-serving cells where appropriate, reducing the need for completely separate configuration sets while maintaining reliability.
Data Source
AI summary
It is possible to perform appropriate CSI reporting for a non-serving cell. A terminal according to one aspect of the present disclosure includes a receiving section that receives separate channel state information (CSI) report configurations for respective reference signals of a reference signal of a serving cell and a reference signal of a non-serving cell or that receives one CSI report configuration including both a reference signal of the serving cell and a reference signal of the non-serving cell, and a control section that controls CSI reporting on the basis of the separate CSI report configurations or the one CSI report configuration.