CSI Frequency Unit Segmentation for 6G Coverage and Feedback
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Solution Overview
Problem
The development of 6G communication systems faces challenges in securing signal transmission distance and coverage due to severe path loss and atmospheric absorption in terahertz bands, necessitating advanced technologies for improved spectral efficiency and network performance.
Innovation Solution
A method and apparatus for transmitting and receiving channel state information (CSI) using a plurality of frequency units of CSI reference signals, enabling channel measurements and reports to optimize beam management and signal coverage in 6G communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terahertz band frequencies are used to achieve high data rates in 6G communication, then spectral efficiency and data rate are improved, but path loss and atmospheric absorption increase severely
Solution Approach 1:
The patent segments the wide bandwidth into multiple frequency units (subbands) and performs channel measurements on each segment separately. This allows the system to operate in terahertz band for high data rates while managing path loss by selecting optimal frequency units for transmission, thus resolving the contradiction between achieving high productivity and minimizing energy loss.
2Measurement precision
If multiple frequency units are used for channel measurements, then channel state information accuracy is improved, but measurement complexity and processing time increase
Solution Approach 1:
The patent divides the channel measurement process into multiple frequency unit segments, allowing parallel processing and independent optimization of each segment. This segmentation improves measurement precision by capturing frequency-selective fading characteristics while managing complexity through structured processing of individual units.
Solution Approach 2:
The patent changes the measurement parameters by configuring different frequency unit granularities and selecting appropriate subsets of frequency units for reporting. This allows the system to adjust between measurement precision and complexity based on channel conditions and service requirements.
3Productivity
If comprehensive channel measurements across all frequency units are performed, then spectral efficiency is improved, but feedback overhead and signaling complexity increase
Solution Approach 1:
The patent extracts only the most relevant frequency unit information for feedback reporting, rather than reporting all frequency unit measurements. This selective extraction maintains spectral efficiency by providing sufficient channel state information while significantly reducing feedback overhead by omitting redundant or less critical measurement data.
Data Source
AI summary
The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method comprises receiving, from a base station, configuration information including information on a plurality of frequency units of a channel state information (CSI) reference signal (RS), performing a channel measurement based on the plurality of frequency units of the CSI RS and transmitting, to the base station, a CSI report including a channel measurement result of the channel measurement, wherein the channel measurement result is associated with at least one frequency unit among the plurality of frequency units.