CSI Reporting for Clear TRP Mapping in Multi-Point Transmission
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Solution Overview
Problem
Existing technologies fail to accurately reflect the relationship between channel state information (CSI) and transmission points (TRP) during coordinated multi-point transmission, leading to unreliable network performance.
Innovation Solution
A method for acquiring and reporting CSI that includes resource configuration information for channel measurement, determining reporting configurations, and sending target CSI to a network device, which indicates recommended resources and transmission modes, ensuring a clear correspondence between CSI and TRP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CSI measurement is performed for multiple target reference points, then transmission diversity is improved, but the correspondence relationship between CSI and selected TRP cannot be reflected
Solution Approach 1:
The patent introduces a mapping relationship as an intermediary element that connects resource sets to TRPs and CSI to transmission schemes. This mapping relationship serves as a mediator that preserves the correspondence information between CSI and selected TRP while enabling diverse transmission scenarios, thus resolving the information loss problem while maintaining transmission diversity.
2Quantity of substance
If resource sets are used as common-mode ratio for multiple TRP, then measurement coverage is improved, but the mapping between resources and TRP becomes unclear
Solution Approach 1:
The patent segments the resource set into multiple subsets, where each subset corresponds to a specific TRP. This segmentation approach maintains comprehensive measurement coverage by including all resources while establishing clear, unambiguous mapping relationships between resources and TRPs through the subset structure, thereby reducing mapping complexity.
3Adaptability or versatility
If terminal calculates CSI according to different transmission scheme assumptions, then transmission mode flexibility is improved, but the reliability of network transmission cannot be guaranteed
Solution Approach 1:
The patent implements a feedback mechanism where the terminal reports not only CSI values but also the corresponding transmission scheme assumptions and selected TRP information back to the network. This feedback loop enables the network to understand which transmission scheme the terminal prefers, allowing for reliable network transmission decisions while maintaining transmission mode flexibility.
Data Source
AI summary
An information reporting and receiving method, a terminal device and a network device are provided in the present disclosure. The information reporting method, performed by the terminal device, which includes: acquiring resource configuration information for channel measurement, where the resource configuration information indicates at least two resource groups and resources included in each resource group; determining reporting configuration of channel state information (CSI); acquiring at least one CSI according to the resource configuration information and the reporting configuration; sending a target CSI to a network device according to the at least one CSI, where the target CSI includes first information, and the first information indicates a target resource and a type of transmission mode recommended by a terminal, where the target resource includes: at least one resource or a combination of at least two resources.