CSI Reporting With Interference Cancellation Capability
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Solution Overview
Problem
In wireless communication systems, especially in multi-node environments, existing methods fail to effectively report channel state information (CSI) with reflected interference cancellation capability, leading to suboptimal signal quality and interference management.
Innovation Solution
A method and apparatus for reporting CSI with interference cancellation capability, where a terminal receives interference configuration information and scheduling details from a serving cell, determines the interference cancellation capability for specific cells, and transmits CSI reflecting this capability, with the capability being restricted or performed by candidate cells indicated by physical cell identifiers or reference signal information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-node coordinated communication is used to increase data throughput, then system capacity and SINR are improved, but interference management complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where user equipment reports channel state information (CSI) that includes interference cancellation capability indicators. The base station uses this feedback to adjust scheduling decisions and interference management strategies, creating a closed-loop system that optimizes throughput while managing complexity through informed decision-making based on real-time channel conditions
Solution Approach 2:
The patent introduces new parameters in CSI reporting, specifically interference cancellation capability indicators and restricted scheduling information. These parameter changes enable the system to quantify and manage interference characteristics, allowing base stations to make more informed scheduling decisions that balance throughput optimization with interference management complexity
2Reliability
If interference cancellation capability is reported in CSI, then signal quality and interference management are improved, but reporting overhead increases
Solution Approach 1:
The patent extracts only the essential interference-related information from the complete channel state and reports it as separate indicators (interference cancellation capability and restricted scheduling information). This extraction approach allows the system to obtain necessary interference management data without reporting the entire channel state, thereby reducing reporting overhead while maintaining signal quality improvement
Solution Approach 2:
The CSI reporting is segmented into traditional channel state components and new interference-related components. This segmentation allows the interference cancellation capability to be reported as distinct indicators rather than embedding it within the complete CSI report, enabling selective processing and reducing the overall reporting overhead
Data Source
AI summary
A method for reporting channel state information (CSI) having reflected interference cancellation capability therein in a wireless communication system is performed by a terminal and includes receiving interference configuration information indicating a first group of cells corresponding to targets for which interference cancellation capability is reflected, and scheduling information of a serving cell, from the serving cell, receiving a specific sequence transmitted from a second group of cells, determining whether to reflect the interference cancellation capability for the first group of cells and the second group of cells, using the interference configuration information, the scheduling information or the specific sequence, and transmitting CSI having reflected the interference cancellation capability therein, wherein the second group of cells correspond to candidate cells capable of reflecting the interference cancellation capability other than the indicated cells.