Terminal CSI Reporting for Multi-TRP and Multi-Panel Radio
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Solution Overview
Problem
The configuration and reporting of channel state information (CSI) for multi-TRP/multi-panel in future radio communication systems, such as NR, have not been sufficiently studied, leading to potential degradation in communication throughput and quality.
Innovation Solution
A terminal equipped with a receiving section to measure CSI from multiple transmission/reception points (TRPs) and a control section to manage CSI reporting, enabling appropriate CSI reporting for multi-TRP/multi-panel scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CSI reporting is not properly configured for multi-TRP/multi-panel, then device complexity is reduced, but communication throughput and quality degrade
Solution Approach 1:
The patent segments the CSI reporting configuration into separate components: a first section for single-TRP CSI reporting and a second section for multi-TRP CSI reporting. This segmentation allows the terminal to handle complex multi-TRP scenarios by dividing the configuration into manageable parts, each with specific parameters (e.g., first CSI-RS resources for single TRP, second CSI-RS resources for multiple TRPs), thereby enabling proper CSI reporting without overwhelming complexity.
Solution Approach 2:
The patent implements dynamic CSI reporting configuration where the terminal can adaptively select between different reporting modes (single-TRP or multi-TRP) based on the actual communication scenario. The control section dynamically determines which CSI reporting configuration to use, allowing the system to optimize communication throughput by switching between simplified single-TRP reporting and comprehensive multi-TRP reporting as needed.
2Reliability
If multi-TRP/multi-panel CSI reporting is implemented, then communication quality improves, but configuration complexity increases
Solution Approach 1:
The patent divides the CSI reporting configuration into distinct segments: a first CSI reporting configuration for single-TRP scenarios and a second CSI reporting configuration for multi-TRP scenarios. Each segment contains specific parameters tailored to its purpose (e.g., first CSI-RS resources, second CSI-RS resources, first CSI resources, second CSI resources), which simplifies the overall configuration process by organizing complex parameters into structured groups.
Solution Approach 2:
The patent creates a universal CSI reporting mechanism that can handle both single-TRP and multi-TRP scenarios through a unified control section. The control section universally manages both configuration types, determining which one to apply based on the communication scenario. This multi-functional approach ensures communication quality improvement for multi-TRP while avoiding the need for completely separate configuration systems.
3Productivity
If comprehensive multi-TRP CSI measurement is performed, then communication performance enhances, but measurement resources are consumed
Solution Approach 1:
The patent implements dynamic resource allocation for CSI measurement where the terminal adapts the measurement scope based on the communication scenario. When single-TRP transmission is detected, the terminal uses only the first CSI-RS resources for measurement. When multi-TRP transmission is detected, the terminal switches to using both first and second CSI-RS resources. This dynamic adjustment optimizes communication performance by using comprehensive multi-TRP measurement only when necessary, conserving measurement resources otherwise.
Solution Approach 2:
The patent applies partial measurement action by configuring the terminal to measure CSI from only the relevant TRPs based on the actual transmission scenario. Instead of always performing comprehensive multi-TRP measurement, the terminal performs partial measurement (single-TRP only) when appropriate, and only performs excessive measurement (multi-TRP) when the scenario requires it. This approach enhances communication performance when needed while avoiding unnecessary resource consumption.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes: a receiving section that receives information of a plurality of resources corresponding to a plurality of transmission/reception points (TRPs) for measurement of channel state information (CSI); and a control section that controls reporting of the CSI, based on the information. According to one aspect of the present disclosure, it is possible to appropriately perform CSI reporting for multi-TRP/multi-panel.