PDCCH Blind Detection Configuration for Flexible CORESET Scheduling
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Solution Overview
Problem
The existing 5G NR system limits the maximum number of blind detections for multiple Control Resource Sets (CORESETs) to 44, affecting scheduling flexibility for terminal devices, particularly in Ultra-Reliable Low Latency Communication (URLLC) services.
Innovation Solution
A terminal device reports its capability for PDCCH monitoring to a network device, allowing for flexible configuration of target resource regions and blind detection numbers based on different time-domain and frequency-domain lengths, ensuring efficient demodulation of downlink control channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the maximum number of blind detections for multiple CORESETs is limited to 44, then the terminal device complexity is controlled, but the scheduling flexibility is reduced
Solution Approach 1:
The patent introduces dynamic configuration of blind detection numbers for different CORESETs based on their specific characteristics (time-domain length, frequency-domain length). Instead of a fixed limit of 44 for all CORESETs, the system dynamically adjusts the blind detection number according to the actual resource region requirements, allowing higher numbers for CORESETs with longer time-domain lengths while maintaining lower numbers for shorter ones, thus improving scheduling flexibility without uniformly increasing terminal complexity
Solution Approach 2:
The patent changes the parameter of blind detection number from a fixed maximum value (44) to a variable value that depends on the time-domain length and frequency-domain length of each CORESET. By introducing these parameter changes, the system can optimize the blind detection number for each specific CORESET configuration, enabling better resource utilization and scheduling flexibility while keeping the terminal device complexity manageable through standardized parameter relationships
2Quantity of substance
If the time for blind detection is extended to accommodate more blind detections, then the number of blind detections increases, but the latency increases
Solution Approach 1:
The patent applies local quality by assigning different blind detection numbers to different CORESETs based on their specific time-domain and frequency-domain characteristics. Instead of uniformly increasing blind detection time for all CORESETs, the system locally optimizes each CORESET's blind detection number according to its actual requirements, allowing longer detection times for CORESETs with longer time-domain lengths while keeping detection times short for CORESETs with shorter time-domain lengths, thus increasing the total number of blind detections without proportionally increasing overall latency
Data Source
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AI summary
Disclosed are an information transmission method and apparatus, a terminal device, and a network device. The method comprises: a terminal device sends a first message to a network device, the first message comprising a parameter for the terminal device to perform a blind detection on a downlink control channel within a target resource area.