Multi-Layer TCI State Mapping for Higher Data Transmission Performance
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Solution Overview
Problem
The existing communication systems are limited by low transmission performance due to the inability to indicate multiple TCI states, restricting terminals to a single TCI state for data transmission.
Innovation Solution
A method and device that enable a terminal to receive multiple TCI states through a first message, determining K TCI states based on a correspondence relationship combination in the TCI configuration information, allowing data transmission across multiple layers to improve performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the indication information of the TCI state indicates only one TCI state, then the terminal can be kept simple in structure, but the transmission performance of the terminal is relatively low
Solution Approach 1:
The patent segments the TCI state indication by introducing multiple correspondence relationship combinations (first, second, third, fourth) that map TCI state indication information to different TCI states for different transmission layers. This allows the terminal to determine multiple TCI states from a single indication message, improving transmission performance without requiring complex additional hardware structures.
2Reliability
If the indication information of the TCI state indicates only one TCI state, then the signaling overhead can be reduced, but the transmission performance of the terminal is relatively low
Solution Approach 1:
The patent merges multiple TCI state indications into a single TCI state indication information field by establishing correspondence relationships between the indication information and multiple TCI states through different correspondence relationship combinations. This combining approach enables the terminal to derive multiple TCI states from one indication message, thereby improving transmission performance while avoiding additional signaling overhead.
3Reliability
If multiple TCI states are indicated, then the transmission performance of the terminal is improved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple correspondence relationship combinations (first, second, third, fourth correspondence relationships) between TCI state indication information and TCI states for different transmission layers. When data transmission occurs, the terminal simply needs to select the appropriate correspondence relationship combination based on the indication information, which simplifies the real-time processing complexity while enabling multi-TCI state operation for improved transmission performance.
Data Source
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AI summary
A data transmission method, a terminal and a network side device are provided. The data transmission method includes: receiving, by a terminal, a first message, where the first message includes first transmission configuration indicator (TCI) state indication information; determining, by the terminal, K TCI states of K transmission layers indicated by the first TCI state indication information, according to a first correspondence relationship combination included in pre-acquired TCI configuration information, where the TCI configuration information at least includes a correspondence relationship combination configured to indicate correspondence relationships between TCI states of a plurality of transmission layers and the first TCI state indication information, the first correspondence relationship combination is configured to indicate the correspondence relationship between the TCI states of the K transmission layers and the first TCI state indication information, K is a quantity of layers used for data transmission; performing, by the terminal, data transmissions in the K transmission layers according to the K TCI states respectively.