PDCCH Repetitive DCI Handling in Multi-TRP NR Scheduling
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Solution Overview
Problem
The reliability of physical downlink control channel (PDCCH) repetitive transmission is not adequately supported in multi-Transmission Reception Point (TRP)/multi-panel scenarios within wireless communication networks, particularly in New Radio (NR) access technology.
Innovation Solution
The method involves determining a first DCI subset with repetitive DCI and a second DCI subset with non-repetitive DCI, using configured correlations and high-layer signaling rules to identify repetitive DCI, and adjusting the downlink assignment index (DAI) and redundancy version (RV) based on these subsets to ensure accurate demodulation and scheduling of resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDCCH repetitive transmission is implemented in multi-TRP/panel scenarios, then communication reliability is improved, but the system complexity and difficulty of detecting and measuring repetitive DCI increase
Solution Approach 1:
The patent segments the DCI set into multiple subsets (first DCI subset containing repetitive DCI, second DCI subset containing non-repetitive DCI) based on detection results. This segmentation allows the system to handle repetitive and non-repetitive DCI differently, reducing detection complexity while maintaining reliability in multi-TRP/panel scenarios
Solution Approach 2:
The patent performs preliminary classification of DCI into repetitive and non-repetitive categories before further processing. By identifying repetitive DCI in advance through the configured correlation and applying preliminary actions (setting DAI to 0, adjusting RV values), the system simplifies subsequent detection and measurement operations
2Reliability
If repetitive DCI is identified and scheduled using configured correlations, then PDCCH transmission reliability is enhanced, but the device complexity increases due to additional processing requirements
Solution Approach 1:
The patent implements dynamic adjustment of downlink assignment index (DAI) and redundancy version (RV) based on whether DCI is identified as repetitive or non-repetitive. The system dynamically modifies processing parameters (DAI set to 0 for repetitive DCI, RV adjusted based on subset) rather than using fixed processing, optimizing the balance between reliability and complexity
Solution Approach 2:
The patent changes key parameters (DAI value, RV value) based on the identification of repetitive DCI. By modifying these critical parameters conditionally, the system enhances transmission reliability through appropriate redundancy and scheduling while avoiding the need for complex overall processing architecture
Data Source
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AI summary
Provided are an information enhancement method and apparatus, a device and a storage medium. The information enhancement method includes determining a first DCI subset in a downlink control information (DCI) set and a second DCI subset in the DCI set, where the first DCI subset includes N pieces of repetitive DCI, and the second DCI subset includes M-N pieces of nonrepetitive DCI, where N is an integer greater than 1, and M is an integer greater than N; and determining correlated information about DCI in the DCI set according to the N pieces of repetitive DCI.