Terminal CSI Measurement for Multi-Panel TRP Systems
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Solution Overview
Problem
In next-generation mobile communication systems, particularly in NR specifications like Rel. 15, there is a lack of clear methods for performing CSI measurement and reporting when using multi-panel/TRP configurations, leading to potential system performance degradation and decreased throughput.
Innovation Solution
A terminal is equipped with a control section to determine resources for interference measurement based on channel measurements from multiple transmission/reception points, and a transmitting section to report channel state information accordingly, enabling appropriate CSI measurement and reporting for multi-panel/TRP scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-panel/TRP transmission is implemented without clear CSI measurement and reporting methods, then system capacity and data rates are improved, but system performance degrades and throughput decreases
Solution Approach 1:
The patent segments the CSI measurement and reporting process into distinct components: channel measurement resources (CMR) are separately defined from interference measurement resources (IMR), and further segmented into zero-power (ZP) and non-zero-power (NZP) types. This segmentation allows independent optimization of each measurement aspect, enabling accurate CSI acquisition for multi-panel/TRP transmissions while maintaining system performance through structured resource allocation.
2Speed
If multi-panel/TRP configuration is used, then high speed data rates are increased, but CSI measurement and reporting becomes unclear
Solution Approach 1:
The patent introduces intermediary measurement resources that bridge the gap between multi-panel/TRP transmission and CSI reporting. Specifically, ZP-IMR and NZP-IMR resources act as intermediaries that enable the terminal to measure interference from specific TRPs or panels indirectly, while CMR resources serve as intermediaries for channel quality measurement. This intermediary mechanism resolves the information loss problem by providing structured measurement paths in complex multi-panel scenarios.
3Reliability
If appropriate CSI measurement and reporting is performed, then system performance is maintained, but resource configuration complexity increases
Solution Approach 1:
The patent creates universal resource configuration mechanisms that serve multiple functions simultaneously. The CMR and IMR resources are designed to be universally applicable across different multi-panel/TRP configurations, serving both channel measurement and interference measurement needs. The association rules between CMR and IMR resources provide a universal framework that works for various TRP numbers and panel configurations, reducing the need for separate specialized configurations for each scenario.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes: a control section that determines a first resource for interference measurement corresponding to a first transmission/reception point or a second resource for interference measurement corresponding to a second transmission/reception point, based on at least one of a first resource for channel measurement corresponding to the first transmission/reception point and a second resource for channel measurement corresponding to the second transmission/reception point; and a transmitting section that transmits a channel state information report, based on the first resource for interference measurement and the second resource for interference measurement. According to one aspect of the present disclosure, it is possible to appropriately perform measurement and report of CSI for multi-panel/TRP.