Wireless CSI Reporting With CORESET-Indexed CSI-RS Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing demand for faster data services and higher capacity in wireless communication systems has led to challenges in efficiently managing channel state information (CSI) transmission and reception, particularly in next-generation mobile communication systems requiring advanced technologies like Dual Connectivity, Massive MIMO, and Non-Orthogonal Multiple Access, where existing methods are inadequate for optimal resource allocation and CSI configuration.
Innovation Solution
A method and apparatus for configuring antenna ports, codebook parameters, and CSI-reference signals (CSI-RS) are introduced, utilizing multiple CSI-RS resources associated with different Control Resource Set (CORESET) pool indices for enhanced CSI reporting and reception, enabling more accurate channel measurement and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple CSI-RS resources are configured for different CORESET pool indices, then channel measurement accuracy and resource allocation efficiency are improved, but system complexity and configuration overhead increase
Solution Approach 1:
The patent segments the CSI-RS resources by associating them with different CORESET pool indices, allowing separate channel measurement resources for different transmission reception points (TRPs). This segmentation enables independent measurement and reporting for each TRP, improving measurement accuracy while organizing complexity through structured resource separation.
Solution Approach 2:
The patent introduces an additional dimension for resource organization by mapping CSI-RS resources to multiple CORESET pool indices. This dimensional expansion allows the system to differentiate and measure channels from multiple TRPs simultaneously, enhancing measurement precision without fundamentally increasing processing complexity through structured resource allocation.
2Productivity
If multiple CSI-RS resources are configured for different CORESET pool indices, then resource allocation efficiency and adaptability are improved, but configuration overhead and signaling complexity increase
Solution Approach 1:
The patent implements multi-functionality by enabling the same CSI reporting mechanism to serve multiple TRPs through different CORESET pool indices. The UE can perform channel measurement and reporting for multiple TRPs using a unified CSI reporting framework, improving resource allocation efficiency across multiple transmission points without requiring separate reporting procedures for each TRP.
Solution Approach 2:
The patent utilizes parameter changes by varying the CORESET pool index parameter to differentiate between multiple CSI-RS resources. This parameter-based differentiation allows the system to efficiently allocate resources for multiple TRPs while minimizing configuration overhead, as the same resource structure can be reused with different parameter values.
3Reliability
If separate channel measurement resources are allocated for different TRPs, then CSI reporting accuracy is improved, but processing time and resource utilization overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple CSI-RS resources associated with different CORESET pool indices before actual channel measurement. This advance configuration allows the UE to efficiently perform measurements when needed, improving CSI reporting accuracy while minimizing processing time during actual operation, as the measurement framework is already established.
Data Source
AI summary
A method and an apparatus for transmitting and receiving channel state information (CSI) in a wireless communication system are disclosed. A method of performing CSI reporting by a user equipment (UE) in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving, from a base station, configuration information related to the CSI reporting; receiving, from the base station, a first CSI-reference signal (CSI-RS) and a second CSI-RS based on the configuration information; and transmitting, to the base station, CSI acquired based on the first CSI-RS and the second CSI-RS. In here, a channel measurement resource for acquiring the CSI may include a first resource for the first CSI-RS and a second resource for the second CSI-RS, and the first resource and the second resource may be respectively associated with different Control Resource Set (CORESET) pool indices.