CSI Resource Pair Configuration for Multi-TRP Interference Management
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately transmitting and receiving channel state information (CSI) due to resource limitations and interference, particularly in multi-transmission reception point (TRP) environments, which affect data rate, latency, and energy efficiency.
Innovation Solution
The method involves configuring a resource pair including two channel measurement resources (CMRs) within the same slot, using different quasi co-location (QCL) types for CSI-reference signals (RS), and setting antenna port indices for each rank indicator (RI), allowing for improved CSI calculation and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple CMRs are configured in the same slot for multi-TRP CSI measurement, then CSI accuracy and data rate are improved, but inter-CMR interference and resource conflict increase
Solution Approach 1:
The patent segments the time domain by configuring CMRs in different slots or different time positions within slots, separating interfering measurements in time while maintaining spatial diversity through multiple TRPs
Solution Approach 2:
The patent dynamically adjusts CMR configuration based on channel conditions, TRP locations, and interference levels, optimizing the balance between measurement accuracy and interference avoidance for each specific scenario
2Reliability
If resource pair with two CMRs is configured for NCJT, then CSI reliability is improved, but resource overhead and system complexity increase
Solution Approach 1:
The patent merges CMR configurations from multiple TRPs into unified resource pairs, allowing the system to achieve diverse measurements while maintaining a standardized, manageable configuration structure
Solution Approach 2:
The patent creates universal CMR resource pair configurations that can be applied across different multi-TRP scenarios and NCJT modes, reducing the need for scenario-specific complex configurations
3Reliability
If QCL-TypeD RS is configured for CMR to reduce interference, then measurement reliability is improved, but time domain resource flexibility is reduced
Solution Approach 1:
The patent applies QCL-TypeD relationships selectively to specific CMR pairs based on their spatial and temporal characteristics, providing interference protection where needed while maintaining flexibility in other time domain configurations
Data Source
AI summary
The present specification proposes a method for transmitting and receiving CSI in a wireless communication system, and a device therefor. The method performed by a terminal can comprise the steps of: receiving information relating to a CSI-RS resource set, wherein the information relating to the CSI-RS resource set comprises information relating to a resource pair, and the resource pair comprises a first channel measurement resource (CMR) and a second CMR configured in the same slot as the first CMR; receiving at least one CSI-RS on the basis of the first CMR and second CMR; and transmitting CSI on the basis of the at least one CSI-RS.