CORESET Frequency Resource Configuration for Small-Bandwidth NR Terminals
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Solution Overview
Problem
In new radio (NR) systems, terminals with smaller system bandwidths face reduced transmission resources for physical downlink control channels (PDCCH), leading to poor coverage due to insufficient available resources and adherence to integer multiple constraints of physical resource blocks (PRBs) for control resource sets (CORESETs).
Innovation Solution
A method for resource configuration that determines and adjusts the frequency domain resources of CORESETs based on specific conditions, allowing for flexible configuration and resource utilization, including the use of virtual resources when actual resources do not meet requirements, ensuring adequate coverage and efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the system bandwidth is reduced to enable terminals with smaller bandwidth support, then the adaptability of the system is improved, but the available transmission resources for PDCCH are reduced, resulting in poor coverage
Solution Approach 1:
The patent divides the frequency domain resources into multiple control resource sets (CORESETs), where each CORESET can be independently configured with different resource allocation modes. This segmentation allows the system to optimize resource usage for different terminal types simultaneously, enabling both small-bandwidth and large-bandwidth terminals to access adequate control resources without compromising overall system adaptability or coverage
Solution Approach 2:
The patent introduces dynamic resource allocation mechanisms where the resource configuration of CORESETs can be adjusted based on terminal capabilities, channel conditions, and traffic requirements. This dynamic approach allows the system to flexibly allocate more resources to small-bandwidth terminals when needed, thereby maintaining both adaptability and sufficient transmission resources for PDCCH coverage
2Ease of manufacture
If the number of PRBs for CORESET is constrained to integer multiples, then the resource allocation standardization is improved, but the resource utilization efficiency deteriorates due to wasted resources
Solution Approach 1:
The patent applies different resource allocation strategies to different CORESETs based on local requirements. While maintaining the integer multiple constraint for standardization, the system can configure specific CORESETs with optimized PRB quantities according to terminal capabilities and channel conditions. This localized optimization minimizes resource waste while preserving allocation standardization through the consistent application of integer multiple rules across different CORESET configurations
Solution Approach 2:
The patent changes the parameter of PRB quantity from a fixed integer multiple constraint to a flexible configuration that can be adjusted within defined ranges. By modifying this parameter, the system can allocate resources more efficiently to match actual transmission needs while still maintaining reasonable standardization through configured minimum and maximum bounds, thereby improving resource utilization without completely abandoning allocation rules
Data Source
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AI summary
The present disclosure relates to a resource configuration method and apparatus, and a storage medium, relating to the technical field of communications and used to provide resource configuration flexibility. The method comprises: determining a resource configuration requirement, the resource configuration requirement indicating a requirement that a frequency domain resource comprised by the first control resource set configured for a terminal shall meet; configuring the first control resource set on the basis of the resource configuration requirement.