Channel Measurement Resource Configuration for Multi-TRP CSI
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Solution Overview
Problem
Current communication systems lack effective measurement resource configuration methods for coherent joint transmission (CJT), which is crucial for improving channel and interference measurement accuracy in multi-TRP scenarios.
Innovation Solution
A method and apparatus for configuring a channel measurement resource set with distinct groups for channel and interference measurement, enabling accurate CSI reporting by considering interference within the same resource set, thereby reducing the need for additional interference measurement resources and overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate interference measurement resources are configured for each TRP, then interference measurement accuracy is improved, but resource overhead increases
Solution Approach 1:
The patent merges interference measurement resources across multiple TRPs by configuring a single interference measurement resource that can be used for interference measurement from any TRP. The terminal device determines interference information based on this unified resource, eliminating the need for separate interference measurement resources for each TRP while maintaining measurement accuracy.
Solution Approach 2:
The interference measurement resource is designed with universal functionality to serve multiple TRPs. The same resource configuration can be used for interference measurement in coordinated sets involving different TRPs, making the resource versatile and applicable across various multi-TRP transmission scenarios without requiring TRP-specific dedicated resources.
2Measurement precision
If channel measurement resources are configured for each TRP, then channel measurement accuracy is improved, but resource overhead increases
Solution Approach 1:
The patent combines channel measurement resources across TRPs by configuring a single channel measurement resource that can be used for channel measurement from any TRP. The terminal device determines channel information based on this unified resource, reducing the need for separate channel measurement resources for each TRP while maintaining measurement accuracy.
3Measurement precision
If interference measurement is performed for all TRPs, then CSI accuracy is improved, but measurement time increases
Solution Approach 1:
The patent extracts the interference measurement function from individual TRP-specific resources and consolidates it into a shared interference measurement resource. This allows the terminal device to obtain interference information from the coordinated set without requiring separate measurement procedures for each TRP, thereby reducing overall measurement time while maintaining CSI accuracy.
Data Source
AI summary
A network device sends first configuration information to a terminal device, to configure a channel measurement resource set for the terminal device, where the channel measurement resource set includes at least one channel measurement resource. After receiving the first configuration information, the terminal device determines channel state information CSI, and sends the CSI to the network device. The CSI is associated with a first group of channel measurement resources and a second group of channel measurement resources in the channel measurement resource set. The first group of channel measurement resources is used for channel measurement, the second group of channel measurement resources is used for interference measurement, and the first group of channel measurement resources is different from the second group of channel measurement resources.