CORESET Group TCI Updating for Multi-TRP Downlink Reception
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Solution Overview
Problem
The existing mobile communication systems face challenges in accommodating explosive data traffic, increasing transmission rates, supporting a large number of connected devices, reducing latency, and enhancing energy efficiency, particularly in next-generation wireless communication systems.
Innovation Solution
A method and apparatus for downlink transmission and reception in a wireless communication system that involves updating the TCI state for Multi-Transmission and Reception Points (M-TRP) based on a unified transmission configuration indicator (TCI) framework, including configuring and transmitting information for multiple CORESET groups with associated TCI states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple CORESET groups with multiple TCI states are configured for M-TRP, then the system can manage multiple transmission and reception points effectively and improve data transmission rates, but the device complexity and configuration overhead increase
Solution Approach 1:
The patent divides the control resource set into multiple CORESET groups, where each group can be independently configured with specific TCI states. This segmentation allows the system to manage multiple TRPs by organizing control resources into distinct groups, enabling independent configuration and management of transmission parameters for each TRP while maintaining overall system coordination
Solution Approach 2:
The patent introduces a group dimension by organizing CORESETs into multiple groups (e.g., first CORESET group, second CORESET group), each associated with different TCI states. This dimensional organization allows the system to handle multiple TRPs by adding a grouping layer to the existing CORESET structure, enabling more flexible and scalable TCI state management without fundamentally changing the underlying control resource framework
2Productivity
If multiple TCI states are updated for multiple CORESET groups, then the system can support explosive data traffic and increase transmission rate per user, but the latency and processing time increase
Solution Approach 1:
The patent performs preliminary configuration of multiple CORESET groups and their associated TCI states in advance. By pre-configuring the control resource groups and their transmission parameters before actual data transmission, the system reduces the processing time required during active communication, allowing for faster data transmission without incurring significant latency penalties during operation
Solution Approach 2:
The patent enables dynamic selection and updating of TCI states for different CORESET groups based on current channel conditions and traffic requirements. This dynamic approach allows the system to adaptively optimize transmission parameters for multiple TRPs, maintaining high transmission rates while minimizing latency by only updating necessary TCI states when conditions change
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 downlink reception 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 for two or more control resource set (CORESET) groups, each of the two or more CORESET groups including at least one CORESET; receiving, from the base station, information indicating two or more transmission configuration indicator (TCI) states; and based on the two or more TCI states, updating TCI state information for the two or more CORESET groups. Here, at least one of the two or more CORESET groups may include a specific CORESET associated with a plurality of TCI states.