Dynamic TRP Switching via TCI Change Information
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Solution Overview
Problem
Current wireless communication systems face challenges in dynamically allocating uplink and downlink resources, particularly in environments with multiple TRPs sharing the same cell ID, which can lead to inefficient data transmission and increased latency due to static resource configurations.
Innovation Solution
A method for dynamically receiving information on Transmission Configuration Indicator (TCI) changes and performing physical downlink control channel (PDCCH) monitoring, allowing terminals to adjust resource allocations based on real-time traffic conditions across multiple TRPs with the same cell ID, enabling flexible and efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If static resource configurations are used in multiple TRP environments, then device complexity is reduced, but data transmission efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation by enabling terminals to monitor PDCCH from multiple TRPs with different TCI states and dynamically switch between them based on real-time channel conditions. This transforms the static resource configuration into a dynamic system that adapts to changing traffic demands and channel qualities, thereby improving data transmission efficiency without requiring complex manual configuration management.
Solution Approach 2:
The patent changes the TCI state parameter dynamically to optimize resource allocation. By allowing terminals to receive and apply different TCI states from multiple TRPs based on current channel conditions and traffic requirements, the system adjusts key transmission parameters in real-time, improving transmission efficiency while maintaining manageable complexity through standardized parameter switching mechanisms.
2Adaptability or versatility
If dynamic TCI switching is implemented, then adaptability to traffic conditions improves, but processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple TCI states and their associated resource allocations before actual data transmission. Terminals are equipped with multiple downlink configuration indexes (DCIs) in advance, each corresponding to a specific TCI state. When traffic conditions change, the terminal can immediately switch to the pre-configured appropriate DCI without requiring time-consuming real-time configuration setup, thus reducing processing time while maintaining high adaptability.
3Adaptability or versatility
If multiple TRPs with same cell ID are used, then resource allocation flexibility improves, but measurement and detection difficulty increases
Solution Approach 1:
The patent applies local quality by associating each TRP with a specific TCI state that carries identifying information about the transmitting TRP. Even though multiple TRPs share the same cell ID, each TRP's signal has distinct local characteristics encoded in its TCI state. Terminals can identify and measure signals from different TRPs by detecting their respective TCI states, thereby maintaining resource allocation flexibility while simplifying TRP identification and measurement through localized signal characteristics.
Data Source
AI summary
The present document provides a method for receiving information informing a transmission configuration indicator (TCI) change in a wireless communication system, the method performed by a user equipment (UE) and comprising: performing an initial access procedure with a network, receiving the information informing the TCI change from a first transmission reception point (TRP) in the network, performing a physical downlink control channel (PDCCH) monitoring based on the information informing the TCI change.