User Equipment CORESET Configuration via Common PDCCH
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Solution Overview
Problem
In future radio communication systems, user terminals may fail to appropriately configure a Control Resource Set (CORESET), leading to inadequate detection of Downlink Control Information (DCI) during procedures such as handover, random access, and cell addition.
Innovation Solution
The user terminal receives CORESET configuration information included in PDCCH-ConfigCommon, which is used to configure cell-specific downlink control channel parameters, allowing the user terminal to appropriately configure the CORESET.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CORESET configuration information is transmitted only in UE-specific PDCCH configuration information, then the configuration can be customized for each user terminal, but the user terminal may fail to appropriately configure the CORESET during procedures such as handover and random access
Solution Approach 1:
The patent applies universality by transmitting CORESET configuration information through both UE-specific PDCCH configuration information and common PDCCH configuration information (PDCCH-ConfigCommon). This multi-channel approach ensures that the configuration is universally accessible during all procedures including handover, random access, and normal operation, while still allowing UE-specific customization when needed.
Solution Approach 2:
The patent implements preliminary action by providing CORESET configuration information in advance through common PDCCH configuration information before procedures like handover or random access occur. This ensures that the user terminal has the necessary configuration ready beforehand, eliminating configuration failures during these critical procedures.
2Device complexity
If CORESET configuration is simplified for common use, then system complexity is reduced, but DCI detection accuracy during critical procedures deteriorates
Solution Approach 1:
The patent applies segmentation by dividing CORESET configuration information into two segments: common PDCCH configuration information for general use and UE-specific PDCCH configuration information for customized requirements. This segmentation allows the system to maintain low complexity for common operations while ensuring high detection accuracy through UE-specific configurations when needed.
Solution Approach 2:
The patent implements local quality by providing different configuration qualities to different user terminals or different procedures. Common PDCCH configuration information provides basic configuration for all terminals, while UE-specific configuration information provides enhanced, tailored configuration for specific terminals during critical procedures, ensuring optimal DCI detection accuracy where needed.
Data Source
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AI summary
A user terminal according to an aspect of the present disclosure includes a receiving section that receives configuration information of a control resource set, included in common configuration information used to configure a cell-specific downlink control channel parameter, and a control section that controls configuration of the control resource set, based on the configuration information.