Terminal PDCCH Reception via CORESET Pool Index Linkage
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Solution Overview
Problem
In future radio communication systems, the reception of a physical downlink control channel (PDCCH) based on PDCCH and control resource set (CORESET) configuration is unclear, leading to potential communication quality and throughput reductions.
Innovation Solution
A terminal that receives information about CORESET pool indices, transmission configuration indication states, and search space sets linked to each other, and uses this information to control the reception of a physical downlink control channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PDCCH/CORESET configuration is implemented for future radio communication systems, then communication capacity and data rates are improved, but reception performance and communication quality deteriorate due to unclear reception methods
Solution Approach 1:
The invention applies preliminary action by pre-configuring linkage information between search space sets and CORESET pool indices before PDCCH reception. The terminal receives and stores this configuration information in advance, which enables proper reception control when multiple TRPs and TCI states are involved, thus preventing reception failures while maintaining high communication capacity.
2Productivity
If multiple TRPs and TCI states are configured for high data rates, then communication throughput is improved, but reception control becomes complex and uncertain
Solution Approach 1:
The invention introduces linkage information as an intermediary element that connects search space sets with CORESET pool indices. This intermediary provides a clear reference relationship that simplifies reception control in multi-TRP scenarios, allowing the terminal to determine which CORESET pool index to use based on the linked search space set, thus reducing reception control complexity while supporting multiple TRPs and TCI states.
3Reliability
If PDCCH repetition is implemented for reliability, then communication robustness is improved, but reception method clarity deteriorates without proper configuration guidance
Solution Approach 1:
The invention implements feedback by providing the terminal with linkage information that explicitly indicates the relationship between search space sets and CORESET pool indices. This feedback mechanism ensures the terminal has clear reception method guidance for PDCCH repetition, knowing which CORESET pool index corresponds to each search space set, thus maintaining both reliability and reception method clarity.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives information related to at least two of a control resource set (CORESET) pool index associated with a CORESET, two transmission configuration indication (TCI) states associated with the CORESET, and two search space sets linked to each other, and a control section that controls, on the basis of the information, reception of a physical downlink control channel. According to one aspect of the present disclosure, it is possible to appropriately perform reception on the basis of PDCCH/CORESET configuration.