5G Terminal Channel State Information Reporting Overlap Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G wireless communication systems, the transmission of URLLC data can contaminate channel state information when CSI-RS is configured in advance, leading to inaccurate channel measurements and reduced system performance.
Innovation Solution
A method for determining resource overlaps between CSI-RS and URLLC transmission resources, allowing the terminal to generate and report channel state information without contamination, involving a transceiver and controller in both the terminal and base station to manage resource usage and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If URLLC data is transmitted on pre-configured CSI-RS resources, then low latency and high reliability transmission is achieved, but channel state information becomes contaminated and measurement precision deteriorates
Solution Approach 1:
The patent segments the resource allocation by introducing a specific indicator field in DCI format 6-1 that identifies whether URLLC data is transmitted on CSI-RS resources. This segmentation allows the system to distinguish between normal CSI-RS transmission and URLLC transmission, enabling the terminal to selectively process or discard channel state information based on the transmission type, thereby preventing contamination while maintaining URLLC reliability
Solution Approach 2:
The patent introduces an intermediary mechanism (the indicator field in DCI and the corresponding processing logic at the terminal) that mediates between URLLC transmission requirements and CSI-RS measurement requirements. This intermediary allows the system to coordinate the conflicting demands by providing explicit signaling about transmission intent, enabling the terminal to adjust its channel state information processing accordingly
2Loss of time
If URLLC data transmission is prioritized over CSI-RS, then low latency is achieved, but channel state information reporting accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by configuring the terminal in advance with specific instructions on how to handle channel state information when URLLC data is detected on CSI-RS resources. The terminal is pre-programmed with the logic to check the indicator field and selectively discard or process channel state information based on the transmission type, enabling immediate response to URLLC requirements without compromising future measurement accuracy
3Productivity
If the terminal reports channel state information based on contaminated reference signals, then reporting frequency is maintained, but information reliability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the terminal reports channel state information only when the reference signals are determined to be uncontaminated. The base station receives this selective feedback and uses it for scheduling decisions, creating a closed-loop system that maintains reporting productivity while ensuring the reliability of reported information through intelligent filtering based on the indicator field
Data Source
AI summary
Disclosed is a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE. According to an embodiment of the present invention, a method for reporting channel state information of a terminal in a wireless communication system comprises the steps of: determining whether a resource for transmitting a reference signal for channel measurement overlaps with a resource for a specific type of transmission; generating channel state information on the basis of the determination result; and transmitting the generated channel state information to a base station.