CSI Domain Mapping in Uplink Control for Accurate PMI Feedback
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Solution Overview
Problem
The existing precoding technologies in wireless communication lack an effective method for mapping precoding matrix indicator (PMI) information to uplink control information, specifically in the processing of channel state information (CSI) domains.
Innovation Solution
A method is provided to map one or more information domains of channel state information to specific fields within uplink control information, dividing these into a first partial field and a second partial field, and generating corresponding bit sequences to facilitate accurate feedback of CSI components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If precoding matrix indicator information is fed back in traditional ways, then channel state information can be transmitted, but the mapping processing method is lacking and resource overhead is high
Solution Approach 1:
The patent segments the uplink control information into multiple fields, including a first field for PMI information, a second field for CQI information, and a third field for additional CSI feedback. This segmentation allows systematic mapping of different CSI components to specific fields, resolving the complexity of traditional mapping methods while maintaining feedback accuracy.
Solution Approach 2:
The patent introduces a mapping mechanism that acts as an intermediary between the channel state information domains and the uplink control information fields. This mapping mechanism systematically transforms and positions CSI data into the appropriate fields, eliminating the lack of effective mapping methods while reducing resource overhead through structured organization.
2Reliability
If more CSI domains are feedback, then communication performance improves, but resource overhead increases
Solution Approach 1:
The patent applies local quality by assigning different fields to carry different types of CSI information with appropriate precision and detail. The first field carries PMI information with specific bit allocation, the second field carries CQI information, and the third field provides additional feedback only when needed. This localized approach ensures communication performance is optimized without uniformly increasing resource overhead across all feedback components.
Data Source
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AI summary
Provided are an information mapping method, an information acquisition method, a terminal device, and a network device. The information mapping method includes mapping at least one information domain of channel state information to at least one field of uplink control information, dividing the at least one field into a first partial field and a second partial field, generating a first bit sequence based on the first partial field, and generating a second bit sequence based on the second partial field.