Joint Channel State Information Reporting for 5G Beam Optimization
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Solution Overview
Problem
Existing 5G communication systems face challenges in jointly reporting channel state information across both analog and digital domains, especially in scenarios with multiple base stations and panels, due to independent feedback mechanisms that fail to consider self-interference and mutual-interference, leading to suboptimal beam combinations.
Innovation Solution
A method and apparatus for jointly reporting channel state information by configuring reference signals and channel state information sets, including precoding matrix indicators and channel quality indicators, to enable effective feedback across both domains, allowing for improved beam selection and spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If independent feedback mechanisms are used for analog and digital beams, then feedback complexity is reduced, but beam combination optimality deteriorates due to inability to consider self-interference and mutual-interference
Solution Approach 1:
The patent merges independent analog beam feedback and digital beam feedback into a unified joint feedback mechanism. The network device configures both analog beam reference signals and digital beam reference signals, and the terminal device jointly determines and feeds back beam combination information considering both domains together, enabling optimization of beam combinations while accounting for self-interference and mutual-interference across the entire system.
2Productivity
If joint reporting of channel state information for multiple base stations and panels is implemented, then spectrum efficiency is improved, but system complexity increases due to coordination requirements
Solution Approach 1:
The patent segments the channel state information feedback into distinct types (first type for analog beam parameters, second type for digital beam parameters) with specific reporting configurations for each. This segmentation allows the system to manage complex multi-base station and multi-panel scenarios by organizing feedback information into structured, manageable categories while still achieving joint optimization across all components.
Solution Approach 2:
The patent introduces configurable parameters including first type reporting configuration signaling and second type reporting configuration signaling that control how channel state information is reported. These parameter changes enable flexible adaptation to different system configurations (single base station, multiple base stations, single panel, multiple panels) while maintaining a unified joint feedback framework that optimizes spectrum efficiency.
Data Source
AI summary
Provided are channel state information reporting method and apparatus, and channel state information receiving method and apparatus. The channel state information reporting method includes: receiving a reference signal sent by a second communication node; and determining, according to a first type reporting configuration signaling associated with the reference signal, at least one of a first type channel state information set or a second type channel state information set, and reporting the at least one of the first type channel state information set or the second type channel state information set to the second communication node. The first type channel state information set includes at least one of a reference signal resource index, a reference signal resource set index, a reference signal resource setting index, a reporting configuration index, a reference signal port group index, a reference signal port group set index, a port index, or rank indicator information. The second type channel state information set comprises at least one of precoding matrix indicator information, channel quality indicator information, an amplitude coefficient, a phase coefficient, or a reference signal received power.