Multipoint CSI Reporting for CoMP Interference Management
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Solution Overview
Problem
Existing channel state information report methods in CoMP technology are limited to single transmission points, unable to support multiple transmission points reporting channel state information under different interference assumptions.
Innovation Solution
Configuring pairs of reference signal resources and report modes for user equipment to enable reporting of channel state information under multiple interference assumptions, allowing for separate channel and interference measurement reference signals to be allocated and configured for each transmission point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing channel state information report methods are used, then single transmission point reporting is supported, but multiple transmission points reporting under different interference assumptions cannot be supported
Solution Approach 1:
The patent segments the channel state information reporting by configuring separate reference signal resources and report modes for each transmission point. Each transmission point is assigned dedicated downlink reference signals for channel measurement and downlink reference signals for interference measurement, allowing independent reporting configurations for multiple transmission points while maintaining manageable complexity through structured resource allocation.
2Measurement precision
If separate reference signal resources are allocated for each transmission point, then accurate channel state information reporting under different interference assumptions is enabled, but configuration and management complexity increases
Solution Approach 1:
The patent extracts and separates the reference signal resources for different functions - downlink reference signals for channel measurement are configured independently from downlink reference signals for interference measurement. This extraction allows each type of reference signal to be optimized for its specific purpose, improving measurement precision while the independent configuration manages complexity by clearly defining separate resource pools for different measurement objectives.
Data Source
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AI summary
Disclosed are a multipoint channel state information reporting method and device. The technical solution of the embodiments of the present invention can be applied to configure a corresponding reporting mode for a reference signal resource pair composed of a channel sounding reference signal resource and an interference sounding reference signal resource which are allocated to a terminal device or configure a plurality of channel state information reporting configurations containing corresponding reporting modes, and allocate to each channel state information reporting configuration a reference signal resource pair composed of a channel sounding reference signal resource and an interference sounding reference signal resource; then, the terminal device report channel state information about corresponding reference signal resource pairs according to corresponding report modes, thereby achieving the purpose that the terminal device reports the channel state information for the one or more transmission points on one or more interference assumptions.