Channel State Information Reporting for Cooperative Network Communication
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Solution Overview
Problem
In wireless communication systems, particularly in cooperative network communication environments, there is a need for efficient reporting of channel state information between terminals and base stations, which current methods fail to address effectively, leading to increased payload and complexity in channel state information management.
Innovation Solution
A method where a terminal receives first and second information for generating and reporting channel state information associated with multiple base stations, using non-coherent joint transmission (NC-JT), and transmits this information after receiving reference signals from the base stations, allowing for efficient CSI reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If channel state information is reported for multiple base stations in cooperative network communication, then the accuracy and completeness of channel state information improves, but the payload size and system complexity increase
Solution Approach 1:
The patent segments channel state information reporting into two distinct parts: first information for CSI generation (received before reference signals) and second information for CSI reporting (received after reference signals). This segmentation allows the terminal to process and report CSI for multiple base stations efficiently, improving measurement precision while managing payload size through structured information organization.
2Measurement precision
If channel state information is reported for multiple base stations in cooperative network communication, then the accuracy and completeness of channel state information improves, but the payload size increases
Solution Approach 1:
The patent divides CSI reporting information into two segments: first information received before reference signals for CSI generation, and second information received after reference signals for CSI reporting. This segmentation optimizes payload size by organizing information chronologically and functionally, allowing efficient transmission of comprehensive CSI for multiple base stations without excessive payload overhead.
3Reliability
If non-coherent joint transmission is configured for multiple base stations, then the coverage and reliability of wireless communication improves, but the complexity of channel state information management increases
Solution Approach 1:
The patent implements segmentation of CSI management processes into distinct phases: receiving first information before reference signal transmission, receiving second information after reference signal transmission, generating CSI based on reference signals, and reporting CSI using the second information. This segmented approach simplifies management complexity while supporting reliable non-coherent joint transmission across multiple base stations.
Solution Approach 2:
The patent applies preliminary action by having the terminal receive and store first information for CSI generation before the actual reference signal transmission occurs. This preliminary preparation enables efficient CSI calculation when reference signals are received, reducing real-time processing complexity while maintaining high reliability for coordinated multi-point transmission.
Data Source
AI summary
A communication technique for merging, with IoT technology, a 5G communication system or supporting a data transmission rate higher than that of a 4G system; and a system therefor is provided. The disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security, and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. A method and an apparatus for reporting channel state information for network cooperative communication are disclosed.