Span-Based Control Resource Thresholds for Low-Latency Scheduling
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Solution Overview
Problem
The existing 4G and 5G mobile communication systems face challenges in supporting ultra-high reliability and ultra-low delay transmission due to insufficient blind detection and non-overlapping control resource element thresholds, particularly in handling multiple occasion locations for control channels, which limits the ability to support high aggregation levels.
Innovation Solution
A method and apparatus for determining threshold values and resources based on span patterns, allowing for increased threshold values tailored to user equipment capabilities, ensuring that terminal processing complexity is not increased and scheduling flexibility is enhanced without exceeding system capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blind detection number threshold and non-overlapping control resource element number threshold are increased to support high aggregation levels in multiple occasion locations, then ultra-high reliability and ultra-low delay transmission are improved, but terminal processing complexity increases
Solution Approach 1:
The patent segments the time domain into multiple spans within a slot, each span having its own threshold value for blind detection and control resource elements. This segmentation allows the terminal to process resources in smaller, manageable units rather than handling all resources simultaneously, thereby supporting high aggregation levels across multiple occasion locations while controlling processing complexity at each span level
Solution Approach 2:
The patent introduces dynamic threshold values that can be independently configured for each span pattern. The threshold values are not fixed but can be adjusted based on specific service requirements, terminal capabilities, and network conditions. This dynamic approach enables the system to adaptively balance reliability requirements with terminal processing capabilities
2Adaptability or versatility
If the blind detection number threshold and non-overlapping control resource element number threshold are increased to support high aggregation levels, then scheduling flexibility is improved, but system complexity increases
Solution Approach 1:
The patent applies different threshold values to different spans within a slot based on local requirements. Each span can have customized threshold configurations tailored to specific service types (e.g., eMBB, URLLC, NB-IoT) and terminal capabilities. This local quality approach enables fine-grained scheduling flexibility without requiring uniform high thresholds across the entire system, thereby controlling overall system complexity
3Loss of time
If multiple occasion locations are provided within a slot to reduce waiting time, then ultra-low delay transmission is improved, but the number of control channel elements required increases
Solution Approach 1:
The patent divides the slot into multiple spans, each containing occasion locations for control channels. By segmenting the time domain, the system can provide multiple transmission opportunities within the same slot without requiring all control channel elements to be available simultaneously. The terminal processes each span independently, reducing the peak resource requirement while maintaining multiple occasion locations for low latency
Data Source
AI summary
Provided are a threshold value determination method and apparatus, a resource determination method and apparatus, a network device, and a storage medium. The threshold value determination method includes: a first threshold value is determined according to a preset rule, where the first threshold value is a threshold value of each span in a span pattern. The resource determination method includes: a resource that should be reserved or dropped is determined by utilizing a threshold value of a span; where the resource includes a candidate set, or all candidate sets within a search space, or all candidate sets of the search space within a current span, or candidate sets of all search spaces within the span.