Predicted CSI Reporting Timing for Multi-Instance Channel Measurement
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting channel state information (CSI) due to the lack of a standardized method for predicting and reporting CSI, leading to inefficiencies in signal transmission and reception.
Innovation Solution
A method and device for a user equipment (UE) to transmit predicted CSI to a base station (BS) by receiving a control signal, measurement resources, and measuring CSI for multiple time instances, with the minimum time interval determined by a measurement window size based on the number of channel measurement resources (CMRs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If predicted CSI is transmitted for multiple time instances, then communication performance is improved, but processing time and complexity increase
Solution Approach 1:
The UE performs channel measurements on multiple CMRs in advance during a measurement window before the CSI reporting time. This preliminary measurement action allows the UE to have measurement data ready, reducing the processing time required at the moment of CSI reporting while still enabling prediction of CSI for multiple future time instances.
Solution Approach 2:
The measurement window size is dynamically adjusted based on the number of CMRs. When more CMRs are configured, the measurement window is extended to provide sufficient time for measurements. This dynamic adjustment optimizes the balance between measurement accuracy and processing time requirements.
2Measurement precision
If measurement window size is increased to accommodate more CMRs, then measurement accuracy is improved, but time resources are consumed
Solution Approach 1:
The system changes the parameter of measurement window size based on the number of CMRs. By establishing a relationship between these two parameters, the system adapts the measurement window duration to the actual measurement requirements, ensuring sufficient accuracy while minimizing unnecessary time consumption.
3Speed
If minimum time interval is reduced for faster CSI reporting, then reporting speed is improved, but measurement accuracy deteriorates
Solution Approach 1:
By performing measurements in advance during the measurement window and using prediction algorithms to estimate CSI for multiple time instances, the system can report CSI faster without compromising measurement accuracy. The preliminary measurement action decouples the measurement process from the reporting time constraint.
Data Source
AI summary
The present disclosure relates to a method by which a user equipment (UE) transmits prediction channel status information (CSI) in a wireless communication system. In particular, the method comprises the steps of: receiving, from a BS, a control signal for a prediction CSI report; receiving, from the BS, at least one measurement resource on the basis of the control signal for the prediction CSI report; measuring at least one prediction CSI related to one or more time instances on the basis of the at least one measurement resource; and transmitting, to the BS, the at least one prediction CSI, wherein a first minimum time interval until the at least one prediction CSI is transmitted after the control signal for the prediction CSI report is received is determined on the basis of the size of a measurement window, and the size of the measurement window is determined on the basis of the number of channel measurement resources (CMRs) from among the at least one measurement resource.