CSI Feedback Selection Under Multiple Spatial Assumptions
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Solution Overview
Problem
Existing wireless communication systems lack an efficient method for adapting spatial elements in Channel State Information (CSI) reports to reduce network energy consumption.
Innovation Solution
A terminal is equipped with a reception unit to receive CSI report configurations with multiple spatial assumptions, a control unit to perform measurements, and a transmission unit to transmit CSI reports based on these configurations, determining the feedback type to be reported to the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional CSI report methods are used, then measurement accuracy is maintained, but network power consumption increases
Solution Approach 1:
The patent applies dynamics by making the CSI report configuration adaptive rather than static. The base station dynamically adjusts spatial assumptions and feedback types based on current channel conditions and traffic requirements, allowing the system to optimize power consumption while maintaining measurement accuracy when needed. The terminal adapts its measurement and reporting behavior according to received configuration parameters.
Solution Approach 2:
The patent changes key parameters of the CSI report configuration, specifically spatial assumptions and feedback types. By modifying these parameters based on network conditions, the system can reduce measurement overhead and power consumption in scenarios where full-precision reporting is not necessary, while still maintaining adequate measurement accuracy for beam management and scheduling decisions.
2Adaptability or versatility
If multiple spatial assumptions are configured, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent segments the CSI report configuration into multiple spatial assumptions, each representing different beamforming scenarios. Instead of processing one complex configuration, the terminal handles multiple simplified spatial assumptions independently. This segmentation allows the system to explore different spatial configurations without overwhelming the terminal's processing capabilities.
Solution Approach 2:
The patent implements partial action by configuring multiple spatial assumptions but requiring the terminal to perform measurements and generate feedback only for the currently active or most relevant assumption. The terminal doesn't need to process all possible spatial configurations simultaneously, reducing complexity while maintaining adaptability when spatial conditions change.
Data Source
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AI summary
A terminal includes: a reception unit configured to receive, from a base station, a CSI (Channel State Information) report configuration in which a plurality of different spatial assumptions are applied; a control unit configured to perform measurement based on the CSI report configuration; and a transmission unit configured to transmit a CSI report to the base station, based on a result of the measurement. The control unit determines a feedback type to be reported to the base station, based on the CSI report configuration.