NR Search Space Configuration for CORESET Association
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Solution Overview
Problem
Current search space configurations in future radio communication systems, such as NR, lack definitions for detailed types of search spaces, leading to unnecessary communication traffic and degradation in communication throughput and frequency use efficiency.
Innovation Solution
A user terminal with a control section that determines the type of search space based on specific information in the search space configuration, and a receiving section that monitors a control resource set (CORESET) using the particular search space, allowing appropriate association between search spaces and CORESETs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If detailed types of search space are not defined in current search space configurations, then the system is simpler to implement, but communication traffic increases unnecessarily and communication throughput degrades
Solution Approach 1:
The search space is segmented into different types (common search space and UE-specific search space) with distinct configurations. Each type has specific parameters optimized for its purpose, allowing the system to reduce unnecessary traffic by directing different traffic types to appropriate search space types, thereby improving communication throughput without excessive complexity
Solution Approach 2:
Different configuration parameters are applied to different search space types based on their specific requirements. The common search space uses configurations optimized for system-wide messages, while UE-specific search spaces use configurations optimized for individual user traffic, improving overall system efficiency and throughput
2Productivity
If detailed types of search space are not defined, then configuration and operation are simpler, but frequency use efficiency degrades
Solution Approach 1:
The search space configuration is divided into distinct types with specific parameters for each type. This segmentation allows the system to optimize frequency usage for different traffic patterns while maintaining clear, manageable configuration procedures through standardized parameter sets for each search space type
Solution Approach 2:
Different parameter sets are defined for different search space types, allowing the system to adjust configuration parameters based on the specific requirements of each search space type. This improves frequency use efficiency by matching parameters to actual usage patterns while keeping the configuration process systematic and manageable
3Productivity
If search spaces are not appropriately associated with CORESETs, then the system is easier to implement, but communication throughput and frequency use efficiency degrade
Solution Approach 1:
The search space configuration acts as an intermediary that links CORESET resources to specific search space types. This intermediary structure enables appropriate association between search spaces and CORESETs, optimizing communication throughput by ensuring that control information is transmitted through the most efficient paths without requiring complex direct mapping mechanisms
Data Source
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AI summary
A terminal comprising a receiving section configured to receive a search space configuration including search space type information, which indicates one out of a common search space and a User Equipment, UE,-specific search space and includes one or more parameters explicitly indicating one or more downlink control information, DCI, formats; and a control section configured to determine a type of a search space based on the search space type information, wherein the receiving section configured to monitor, in the search space, physical downlink control channel, PDCCH, candidates for the one or more DCI formats explicitly indicated by the one or more parameters. Also provided are a radio communication method, a base station and a system.