UE Small Data Transmission Signaling for Inactive-State Uplink
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Solution Overview
Problem
In inactive states, user equipment (UE) frequently requires multiple data transmissions, leading to inefficient spectrum usage and network performance degradation due to infrequent beam measurement and reporting, resulting in failed transmissions and excessive signaling interactions.
Innovation Solution
The UE indicates associated information during small data transmission (SDT) about data to be transmitted, such as resource allocation intervals, data amounts, and channel quality, allowing the base station to optimize resource allocation and improve network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE in inactive state performs multiple data transmissions using original beam, then data transmission can be maintained, but transmission fails when beam conditions change affecting spectrum efficiency and network performance
Solution Approach 1:
The UE performs beam measurement and reports measurement results to the network before data transmission occurs. This preliminary action ensures that the network has current beam information ready, allowing it to select the appropriate beam for data transmission without waiting for transmission failures to occur.
Solution Approach 2:
The UE continuously measures beam quality and provides feedback to the network through measurement reports. This feedback mechanism allows the network to dynamically adjust beam selection based on current channel conditions, ensuring reliable transmission while maintaining spectrum efficiency.
2Measurement precision
If the UE frequently measures and reports beam measurement results, then beam selection accuracy improves, but signaling overhead increases
Solution Approach 1:
The UE performs beam measurement more frequently than minimum requirements, but only reports measurements when significant changes occur or when triggered by specific events. This partial reporting approach maintains measurement precision while avoiding excessive signaling overhead from reporting every measurement result.
Solution Approach 2:
The measurement reporting behavior changes based on UE state transitions and beam quality thresholds. When the UE transitions from inactive to connected state, or when beam quality deteriorates below a threshold, the UE initiates measurement reporting. This dynamic parameter adjustment optimizes the balance between measurement accuracy and signaling overhead.
Data Source
AI summary
A method for uplink data transmission, a user equipment (UE), and a storage medium are provided. The method is performed by a UE. The method includes: indicating in small data transmission (SDT) associated information of data to-be-transmitted when the UE is in an inactive state and has the data to-be-transmitted.