CSI Report Configuration for Multi-TRP Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks with multiple transmission points, existing methods face inefficiencies and excessive communication overhead due to the need for extensive channel state information feedback, particularly in multi-TRP configurations, which complicates the reporting of CSI feedback and increases computational burden.
Innovation Solution
The proposed solution involves configuring channel state information report settings that include indications for multiple transmission points, allowing for the identification of transmission hypotheses such as single-point and multi-point joint transmissions, and mapping CSI fields into subreports using a priority function to optimize the reporting process, thereby reducing overhead and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If extensive channel state information feedback is used for multiple transmission points, then transmission reliability is improved, but communication overhead increases
Solution Approach 1:
The patent segments the channel state information feedback into multiple parts: first CSI feedback for first transmission point(s) and second CSI feedback for second transmission point(s). This segmentation allows the system to obtain reliable channel state information for multiple transmission points while reducing the overhead of transmitting all CSI data simultaneously by enabling separate feedback transmissions.
2Adaptability or versatility
If channel state information report configuration includes multiple transmission points, then transmission versatility is improved, but device complexity increases
Solution Approach 1:
The patent introduces dynamic parameters including a first parameter indicating a first transmission hypothesis for first transmission point(s) and a second parameter indicating a second transmission hypothesis for second transmission point(s). These dynamic parameters allow the system to adapt to different transmission scenarios (single-point or multi-point transmission) without requiring complex static configuration, thereby improving versatility while managing device complexity through dynamic adaptation.
3Measurement precision
If comprehensive channel state information is reported for all transmission points, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent employs periodic feedback mechanisms where the user equipment transmits first CSI feedback and second CSI feedback in different feedback opportunities. This periodic action allows comprehensive channel state information to be collected over time with high precision while distributing the feedback transmission across multiple time instances, thereby reducing the time loss associated with transmitting all CSI data in a single feedback round.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for CSI report configuration. One method includes receiving at least one CSI reporting setting. The at least one CSI reporting setting includes at least one CSI RS resource setting, and the CSI reporting setting includes an indication of CSI feedback reporting for multiple transmission points in a mobile communication network. The method includes identifying a set of transmission hypotheses based on the CSI reporting setting. The hypotheses include a combination of single-point transmission from at least one TRP, or multi-point joint transmission from two TRPs. The method includes receiving at least one CSI reference signal resource transmitted from the mobile communication network based on the CSI reference signal resource setting. The method includes generating a set of at least one CSI report based on the CSI reporting setting.