CSI Reporting Across BWPs Using Measurement Gaps
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently reporting channel state information (CSI) for enhanced mobile broadband communication, massive machine type communications, and ultra-reliable low latency communications, particularly in multi-node systems where multiple nodes provide coordinated data transmission.
Innovation Solution
A method for reporting channel state information (CSI) in a wireless communication system, involving user equipment (UE) that measures CSI for control and data channels, receives feedback configurations, and reports measured CSI to a serving base station, with independent CSI reference resources for each channel, enabling efficient CSI reporting in multi-node systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If independent CSI reference resources are configured for control and data channels, then CSI measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the CSI reference resources into separate independent configurations for control channels and data channels. This segmentation allows each channel type to have its own dedicated reference resources, enabling precise measurement without interference, while the modular structure manages complexity through organized separation.
2Measurement precision
If multiple narrowbands are monitored for CSI measurement, then CSI reporting accuracy is improved, but processing time increases
Solution Approach 1:
The patent configures multiple narrowband CSI reference resources in advance before actual CSI measurement is needed. By pre-configuring these resources across multiple narrowbands, the system prepares measurement capabilities ahead of time, allowing faster CSI reporting when required without sacrificing accuracy from multiple narrowband measurements.
Data Source
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AI summary
A method for reporting a channel state in a wireless communication system according to an embodiment of the present disclosure may comprise the steps of: receiving a channel state report setting including an index of a first bandwidth part (BWP); receiving a trigger of a channel state report for a second BWP other than the first BWP; measuring a channel state in the second BWP in a measurement gap according to the trigger; and transmitting the measured channel state to a base station on an available uplink resource within a first activated BWP after the measurement gap.