CSI Reference Signal Resource Pairs for High-Speed Channels
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Solution Overview
Problem
In high-speed wireless communication environments, existing technologies face challenges in effectively managing channel state information (CSI) due to rapid changes in signal conditions, leading to suboptimal data transmission and reception.
Innovation Solution
The implementation of channel state information reference signal resource pairs, where each pair is identified by specific identifiers, allows for improved CSI measurement and feedback, enabling better coordination between transmission and reception points, particularly in scenarios involving high-speed user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional single reference signal resources are used for CSI measurement, then the system complexity is low, but the CSI measurement precision deteriorates in high-speed environments due to rapid signal changes
Solution Approach 1:
The patent divides a single reference signal resource into multiple segmented reference signal resources (first CSI-RS resource and second CSI-RS resource), each carrying different channel state information. This segmentation allows the system to capture rapid signal changes in high-speed environments by measuring different segments of the channel, thereby improving CSI measurement precision without requiring a complete redesign of the reference signal structure
Solution Approach 2:
The patent introduces a new dimension to CSI measurement by configuring multiple CSI-RS resources with different time-domain and frequency-domain parameters. This dimensional expansion allows the system to measure channel states from multiple perspectives simultaneously, capturing the dynamic nature of high-speed channels while maintaining manageable system complexity through structured resource configuration
2Reliability
If multiple CSI-RS resources are configured for high-speed scenarios, then the CSI reporting accuracy improves, but the signaling overhead and resource management complexity increase
Solution Approach 1:
The patent performs preliminary configuration of multiple CSI-RS resources and their associated parameters (time-domain offsets, frequency-domain offsets, resource configurations) before actual CSI measurement. This advance setup allows the UE to efficiently manage multiple reference signal resources without requiring complex real-time decisions, reducing signaling overhead while ensuring accurate CSI reporting for high-speed scenarios
Solution Approach 2:
The patent implements dynamic resource selection where the UE can adaptively choose which CSI-RS resources to measure and report based on current channel conditions and UE mobility state. This dynamic approach allows the system to maintain high CSI reporting accuracy by selecting the most relevant reference signal resources while minimizing unnecessary signaling overhead for resources that would not contribute to accurate measurements
3Adaptability or versatility
If CSI measurement resources are increased to track rapid signal changes, then the adaptability to high-speed environments improves, but the resource consumption and processing load increase
Solution Approach 1:
The patent designs the multiple CSI-RS resources to serve multiple functions simultaneously: channel estimation, interference measurement, and mobility detection. Each CSI-RS resource is configured with parameters that allow it to contribute to different aspects of channel state information, thereby improving adaptability to high-speed environments without proportionally increasing the total quantity of reference signal resources required
Solution Approach 2:
The patent utilizes parameter changes in the CSI-RS resource configuration (such as time-domain periodicity, frequency-domain spacing, and resource allocation patterns) to optimize the balance between adaptability and resource consumption. By carefully adjusting these parameters, the system can achieve high adaptability to rapid signal changes in high-speed environments while controlling the quantity of reference signal resources to manageable levels
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for channel state information reference signal resource pairs. One method (600) includes transmitting (602) information indicating: at least one pair of channel state information reference signal resources; wherein the information comprises one or more identifiers, and each identifier of the one or more identifiers corresponding to the at least one pair of channel state information reference signal resources.