CoMP Channel Feedback Configuration via Independent Measurement Subsets
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Solution Overview
Problem
Existing CoMP technologies lack a unified structural design for channel state information feedback, failing to provide individual channel state information for each cell or transmission point, limiting the ability to serve multiple transmission points or cells effectively.
Innovation Solution
A method is introduced where each base station and coordinated transmission point are configured with independent measurement subsets for channel state information feedback, allowing for precise and flexible CSI measurement across multiple cells, reducing interference and overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a unified structural design for feedback information is not used, then channel feedback information cannot serve multiple transmission points or cells effectively, but implementing individual channel state information feedback configuration for each cell or transmission point increases system complexity
Solution Approach 1:
The patent segments the feedback configuration by introducing individual measurement subset configurations for each cell or transmission point. Each transmission point can have its own measurement subset (e.g., first measurement subset for first cell, second measurement subset for second cell), allowing channel feedback information to be specifically tailored and applied to each transmission point or cell, thereby enabling the feedback information to serve multiple transmission points or cells effectively.
2Measurement precision
If individual channel state information feedback is configured for each cell or transmission point, then measurement precision and flexibility are improved, but downlink overhead increases
Solution Approach 1:
The patent applies local quality by configuring measurement subsets specifically for each cell or transmission point based on local conditions. Each transmission point can have its own measurement subset configuration that is optimized for its specific scenario (e.g., ABS patterns, interference conditions), thereby improving measurement precision and flexibility for each local context without requiring a completely separate feedback mechanism for each point.
Data Source
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AI summary
Embodiments of the present invention provide a measurement method for channel state information, user equipment and a base station. The measurement method comprises: selecting one or more coordinated transmission points for coordinated multipoint transmission by the base station for user equipment; and independently configuring a measurement subset used for channel state information feedback for each base station and each coordinated transmission point, so that the user equipment performs measurement according to the measurement subset. With the embodiments of the present invention, channel state information feedback configuration is performed to each cell or transmission point participated in coordination, and a unified structural design for feedback information may be used, so that channel feedback information for multiple transmission points or multiple cells can serve for not only transmission of a single cell, but also transmission of multiple cells.