Bandwidth Part CSI Reporting Configuration for Wireless Systems
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Solution Overview
Problem
Current mobile communication systems face challenges in supporting high-speed data services due to resource shortages and the increasing demand for faster data transfer rates, larger numbers of connected devices, very low end-to-end latency, and high energy efficiency, necessitating advanced techniques such as small cell enhancement, dual connectivity, and non-orthogonal multiple access.
Innovation Solution
A method for communicating channel state information (CSI) is proposed, involving semi-persistent CSI configuration, activation/deactivation between bandwidth parts (BWP), and identification of CSI configuration related to time division duplexing (TDD) or slot format, allowing effective uplink resource allocation and distinguishing downlink control information without increasing the user equipment's (UE) blind decoding complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-persistent CSI configuration is implemented with BWP association, then resource usage efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the CSI configuration into multiple independent components: BWP configuration, reporting configuration, and resource configuration. Each component can be independently activated or deactivated based on BWP state, allowing fine-grained control over resource usage while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent implements dynamic activation and deactivation of CSI reporting configurations based on BWP state changes. The system transitions from static configuration to dynamic adaptation, where CSI reporting is automatically enabled when BWP is activated and disabled when BWP is deactivated, optimizing resource usage in real-time.
2Ease of operation
If downlink control information is distinguished without increasing blind decoding complexity, then ease of operation is improved, but information transmission overhead increases
Solution Approach 1:
The patent merges the BWP indication and CSI reporting activation into a single downlink control information message. By combining multiple control functions into one signaling structure, the system achieves easy identification of control information without proportionally increasing overhead, as the combined message is transmitted as a single unit.
Solution Approach 2:
The downlink control information structure is designed to serve multiple functions simultaneously: it indicates BWP activation state, triggers CSI reporting configuration, and provides resource allocation information. This multi-functional design reduces the need for separate signaling messages, maintaining ease of operation while controlling overhead.
Data Source
AI summary
Disclosed are a method for transmitting and receiving a radio signal in a wireless communication system and an apparatus therefor. Particularly, a method for performing, by a terminal, channel state information (CSI) reporting in a wireless communication system comprises the steps of: receiving, from a base station, bandwidth part (BWP) configuration information on a BWP for uplink and/or downlink transmission; receiving, from the base station, reporting configuration information including a reporting configuration for the CSI reporting; and performing the CSI reporting on the basis of the BWP configuration information and the reporting configuration information, wherein the reporting configuration is associated with the BWP, and whether or not the reporting configuration is activated may be determined on the basis of whether or not the BWP is activated.