TCI State Determination for Multi-TRP Wireless Reception
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Solution Overview
Problem
In wireless communication systems, determining a transmission configuration indication (TCI) state for multi-transmission point (TRP) communications is challenging, especially when multiple TRPs transmit different data, requiring efficient methods to manage throughput and reliability.
Innovation Solution
A method and device for determining a TCI state by receiving a configuration message indicating quasi co-location (QCL) parameters, where the device checks if it is within a scheduling threshold duration to decode downlink control information (DCI), and based on this, it configures the TCI state for receiving data from multiple TRPs using the QCL parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple TRPs transmit different data to the same UE, then throughput is improved, but determining the correct TCI state becomes more complex and challenging
Solution Approach 1:
The system configures multiple TCI states in advance through RRC signaling before multi-TRP transmission occurs. The UE is pre-provided with a TCI state list that includes QCL parameters for multiple TRPs, enabling rapid selection during data reception without real-time computation complexity
Solution Approach 2:
The patent introduces DCI as an intermediary mechanism that carries TCI state indication information. The DCI dynamically points to the appropriate TCI state from the pre-configured list, simplifying the UE's determination process by providing a direct mapping rather than requiring complex multi-TRP parameter analysis
2Productivity
If the UE determines TCI state based on lowest CORESET ID within scheduling threshold, then data reception efficiency is improved, but the scheduling threshold duration constraint limits flexibility
Solution Approach 1:
The system dynamically adjusts TCI state selection based on the scheduling offset parameter. When the scheduling offset is within the threshold duration, the UE uses the lowest CORESET ID's TCI state for efficient reception. This dynamic adaptation allows the system to optimize for speed when resources are tightly scheduled while maintaining correctness
Solution Approach 2:
The patent changes the TCI state parameter selection criteria based on the scheduling threshold condition. By monitoring whether the scheduling offset falls within the threshold duration, the system switches between different TCI state determination methods, optimizing performance for the specific scheduling scenario
Data Source
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AI summary
Aspects of the disclosure relate to determining a transmission configuration indication (TCI) state for receiving a multi-transmission point (TRP) communication. A receiving device receives a configuration message indicating a lowest control resource set identifier (CORESET ID) for receiving one or more downlink control information (DCI) and determines whether a state of the receiving device is within a scheduling threshold duration for decoding DCI. The receiving device then determines a TCI state for receiving data based on a TCI state associated with the lowest CORESET ID if the state of the receiving device is within the scheduling threshold duration, wherein the TCI state associated with the lowest CORESET ID indicates one or more sets of quasi co-location (QCL) parameters. The receiving device then receives the data from one or more transmission points (TRPs) based on the one or more sets of QCL parameters.