Aperiodic CSI-RS Resource Configuration for Multi-Node Interference Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently reporting channel state information using aperiodic channel state information-reference signals, particularly in multi-node systems where coordinated communication schemes require accurate and timely channel state reports to enhance data throughput and signal quality.
Innovation Solution
A method and apparatus for channel state reporting using aperiodic channel state information-reference signals (CSI-RS) in a wireless communication system, where a terminal receives multiple aperiodic CSI-RS resource configurations, calculates channel state information based on indicated CSI-RS, and reports it to a base station, incorporating antenna port information and control signals to optimize reporting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If aperiodic CSI-RS resources are used for channel state reporting in multi-node systems, then data throughput and signal quality are improved, but interference between nodes increases and reporting efficiency becomes challenging
Solution Approach 1:
The patent segments the channel state reporting process by introducing multiple aperiodic CSI-RS resource configurations with different parameters (resource blocks, antenna ports, scrambling codes). This segmentation allows different nodes to transmit CSI-RS on different resources, reducing mutual interference while maintaining high data throughput through selective resource allocation.
Solution Approach 2:
The patent implements dynamic resource allocation where the base station can selectively activate different aperiodic CSI-RS resource configurations based on current channel conditions and interference levels. This dynamic approach enables the system to adaptively optimize throughput while managing interference in multi-node coordinated communication.
2Measurement precision
If multiple aperiodic CSI-RS resource configurations are implemented, then channel state reporting accuracy is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent creates universal resource configuration templates that can be applied across multiple nodes and scenarios. The aperiodic CSI-RS resource configurations use standardized parameters (resource block assignments, antenna port structures, scrambling code patterns) that can be selectively instantiated, reducing the need for node-specific complex configurations while maintaining high measurement precision.
Solution Approach 2:
The patent manages complexity by changing key parameters (resource block indices, antenna port numbers, scrambling codes) of the CSI-RS configurations rather than creating entirely separate configuration structures. This parameter-based approach allows precise channel state measurement through multiple configurations while keeping the overall system structure manageable through systematic parameter variation.
Data Source
AI summary
Provided is a method for channel state report using an aperiodic channel state information-reference signal (CSI-RS) in a wireless communication system according to an embodiment of the present invention, the method performed by a terminal and comprising the steps of: receiving a plurality of aperiodic CSI-RS resource settings contained in a single CSI process; receiving an indicator which indicates an aperiodic CSI-RS according to one of a plurality of aperiodic CSI-RS resource settings; and calculating channel state information on the basis of the aperiodic CSI-RS indicated by the indicator when receiving a CSI request using an effective aperiodic CSI-RS and reporting the same to a base station, wherein the plurality of aperiodic CSI-RS resource settings may comprise parameters which are commonly applied to a plurality of CSI-RS resource settings in the single CSI process.