Terminal Search Space Configuration for Wideband PDCCH Monitoring
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Solution Overview
Problem
In wideband operation of wireless communication systems, user terminals face challenges in monitoring the downlink physical control channel due to increased complexity when conventional CORESET configurations are used across multiple subbands, leading to inadequate monitoring capabilities.
Innovation Solution
A terminal configuration that receives configuration information for multiple search spaces with common parameter values across control resource sets, allowing the user terminal to monitor the downlink physical control channel using designated frequency domain resources from all or a part of the control resource sets, thereby simplifying the monitoring process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional CORESET configurations are used across multiple subbands, then data transmission can be performed in each subband, but the complexity of the user terminal increases and monitoring capability deteriorates
Solution Approach 1:
The patent merges multiple CORESET configurations into a unified search space structure. Instead of configuring separate CORESETs for each subband, the invention creates a single search space that spans multiple subbands, allowing the terminal to monitor PDCCH across all subbands using a unified configuration, thereby reducing complexity while maintaining data transmission capability
Solution Approach 2:
The patent makes the search space structure universal across multiple subbands. A single search space configuration serves multiple subbands simultaneously, enabling the terminal to use one unified monitoring configuration for all subbands rather than requiring separate configurations for each subband, thus reducing terminal complexity
2Productivity
If conventional CORESET configurations are used across multiple subbands, then data transmission can be performed in each subband, but monitoring capability of downlink physical control channel deteriorates
Solution Approach 1:
The patent merges multiple CORESET configurations into a unified search space structure. Instead of configuring separate CORESETs for each subband, the invention creates a single search space that spans multiple subbands, allowing the terminal to monitor PDCCH across all subbands using a unified configuration, thereby reducing complexity while maintaining data transmission capability
Solution Approach 2:
The patent segments the search space into multiple parts corresponding to different subbands, where each part has its own frequency domain resources. This segmentation allows the terminal to monitor different subbands independently within a unified search space structure, improving monitoring capability while maintaining simplicity
Data Source
AI summary
A terminal including: a reception unit configured to receive, from a base station apparatus, configuration information of a plurality of search spaces each of which is associated with a control resource set, wherein, between a plurality of control resource sets associated with the plurality of search spaces, values of parameters of a part of a plurality of parameters that each control resource set has are common, and the reception unit monitors a downlink physical control channel using a frequency domain resource designated by all of or a part of the plurality of control resource sets.