Dynamic PDSCH Repetition Scheduling via DCI Format Segmentation
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in efficiently managing and optimizing the repetitive transmission of downlink data channels, particularly in terms of time domain resource allocation and control information scheduling, which affects the overall performance and efficiency of data transmission.
Innovation Solution
The proposed solution involves a method and apparatus where a user equipment (UE) and a base station exchange configuration information for time domain resource allocation of a physical downlink shared channel (PDSCH), including repetition numbers, through higher layer signaling, and transmit/receive downlink control information (DCI) to schedule the PDSCH based on specific DCI formats, enabling flexible and efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single repetition number configuration is used for all DCI formats, then the system complexity is reduced, but the adaptability to different transmission scenarios deteriorates
Solution Approach 1:
The patent implements dynamic selection of repetition numbers based on DCI format type. The UE determines whether to apply first or second repetition numbers based on the received DCI format, allowing the system to adapt transmission parameters dynamically to different scheduling scenarios while maintaining clear configuration management through separate lists for different DCI formats.
2Adaptability or versatility
If multiple repetition number configurations are maintained for different DCI formats, then the adaptability to different transmission scenarios is improved, but the configuration management complexity increases
Solution Approach 1:
The patent segments the repetition number configurations into two separate lists: first repetition numbers associated with first DCI formats and second repetition numbers associated with second DCI formats. This segmentation allows independent optimization for different transmission scenarios while maintaining organized and manageable configuration structures through clear association rules.
3Productivity
If dynamic adjustment of repetition numbers based on DCI formats is implemented, then the data transmission efficiency is improved, but the processing complexity at UE increases
Solution Approach 1:
The UE autonomously determines which repetition number configuration to apply based on the received DCI format type, without requiring additional network control or complex coordination. This self-service mechanism enables dynamic adaptation to different transmission scenarios while keeping UE processing complexity manageable through straightforward format-based selection logic.
Data Source
AI summary
The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure relates generally to operations of a terminal and a base station in a wireless communication system. Specifically, the present disclosure relates to a method and apparatus for repetitive transmission of a downlink data channel in a wireless communication system.