CSI Reference Resource Separation in Wireless Communication
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Solution Overview
Problem
In wireless communication systems, there is a challenge in efficiently transmitting channel state information (CSI) due to the complexity of interference and signal measurements, particularly when multiple interference/signal measurement sets are present, which affects the accuracy and reliability of CSI reporting.
Innovation Solution
A method and apparatus for determining and transmitting CSI reference resources in a wireless communication system, where the CSI reference resource is identified using a measurement set including interference and signal measurement sets, and resources for interference or signal measurement are separated if the CSI reference resource is repeatedly contained in multiple sets, allowing for accurate CSI reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple interference measurement sets and signal measurement sets are used to improve measurement comprehensiveness, then the accuracy of CSI reporting is improved, but the complexity of resource allocation and measurement separation increases
Solution Approach 1:
The patent divides the measurement resources into distinct interference measurement sets and signal measurement sets, with clear separation of CSI reference resources from measurement resources. This segmentation allows the UE to accurately measure both interference and signal components without contamination, improving CSI reporting accuracy while managing complexity through structured organization.
Solution Approach 2:
The patent extracts and separates the CSI reference resource from the measurement resources by defining that the CSI reference resource shall not be included in the interference measurement set or signal measurement set. This extraction ensures that the reference resource used for channel state measurement is independent from the measurement resources, preventing measurement contamination and improving accuracy.
2Adaptability or versatility
If the CSI reference resource is repeatedly contained in multiple measurement sets to enhance measurement coverage, then the comprehensiveness of measurement is improved, but the reliability of measurement separation deteriorates
Solution Approach 1:
The patent explicitly extracts the CSI reference resource from the measurement sets by defining that the CSI reference resource shall not be included in the interference measurement set or signal measurement set. This ensures reliable separation even when the reference resource is repeatedly contained in multiple measurement sets, maintaining measurement separation reliability while preserving measurement coverage.
Solution Approach 2:
The patent performs preliminary separation of the CSI reference resource from measurement resources in the configuration stage. By pre-defining that the reference resource is excluded from measurement sets, the system ensures reliable measurement separation before actual measurement occurs, preventing any potential contamination.
3Measurement precision
If resources for interference or signal measurement are separated from the CSI reference resource to improve measurement accuracy, then the precision of CSI measurement is improved, but the complexity of resource configuration increases
Solution Approach 1:
The patent defines a universal rule that applies to all interference measurement sets and signal measurement sets: the CSI reference resource shall not be included in any of these sets. This universal definition simplifies the configuration process by providing a single clear guideline rather than requiring separate complex configuration rules for each measurement set type.
Solution Approach 2:
The patent segments the resource configuration into distinct categories: CSI reference resources and measurement resources (interference and signal). This segmentation is clearly defined in the configuration parameters, making it easier to manage and reducing configuration complexity while maintaining measurement precision through clear resource separation.
Data Source
AI summary
The present invention relates to a method for allowing a terminal to transmit cone or more pieces of channel state information (CSI) in a wireless communication system, and the method for transmitting the CSI comprises the steps of: determining CSI reference resources from a subframe which is to transmit the one or more pieces of CSI; and transmitting the one or more pieces of CSI measured in the CSI reference resources wherein the determination of the CSI reference resources uses measurement sets which include one or more interference measurement sets and one or more signal measurement sets, and if the CSI reference resources are included in an overlapping manner in two or more of the one or more interference measurement sets and the one or more signal measurement sets, a resource for measuring interference or a signal is separated within the CSI reference resources.