Channel State Information Reporting via Segmented Reference Resources
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately transmitting and receiving channel state information between terminals and base stations, particularly in next-generation systems requiring enhanced mobile broadband, massive machine-type communications, and ultra-reliable low-latency communications, where existing methods do not provide sufficient accuracy and reliability.
Innovation Solution
A method is introduced where a terminal receives reference resources for channel state measurement and transport block size determination from a base station, determines channel state information based on these resources, and transmits it back, using independent reference resources for measurement and modulation and coding scheme determination, enabling more accurate reporting and reliable downlink data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single reference resource is used for both channel state measurement and transport block size determination, then the system structure is simpler, but the channel state information accuracy deteriorates
Solution Approach 1:
The patent divides the reference resource into two independent parts: a first reference resource for channel state measurement and a second reference resource for transport block size determination. This segmentation allows each reference resource to be optimized for its specific function, thereby improving channel state information accuracy without unnecessarily increasing system complexity.
2Measurement precision
If independent reference resources are configured for channel state measurement and transport block size determination, then channel state information accuracy is improved, but the signaling overhead increases
Solution Approach 1:
The network side device performs preliminary configuration of the first and second reference resources through downlink control information before the terminal needs to determine channel state information. This preliminary action eliminates the need for complex real-time calculations and reduces the signaling overhead required during actual channel state measurement and transport block size determination.
3Speed
If the terminal determines transport block size based on a single reference resource, then the processing is faster, but the downlink data transmission reliability deteriorates
Solution Approach 1:
The terminal uses the first reference resource to measure channel state information and the second reference resource to determine transport block size, then feeds back the channel state information to the network side device. This feedback mechanism enables the network to adjust downlink transmission parameters accordingly, thereby improving downlink data transmission reliability without significantly impacting processing speed.
Data Source
AI summary
Disclosed are a method for transmitting or receiving channel state information between a terminal and a base station, and a device for supporting the same. More particularly, disclosed are a method for more elaborately measuring channel state information and a method for transmitting or receiving channel state information based on the same.