User Terminal CORESET Configuration via Frequency Range Parameter Selection
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Solution Overview
Problem
User terminals in future radio communication systems, such as NR, face challenges in configuring a control resource set for a common search space due to uncertainty in referencing parameters from the MIB or cell-specific configuration information, leading to inappropriate configuration of the control resource set.
Innovation Solution
A user terminal receives a master information block (MIB) and determines the control resource set for the common search space based on the frequency range of the cell and a value derived from a parameter in the MIB, specifically using the Ssb-subcarrierOffset to decide between configuration parameters in the MIB or cell-specific configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE refers to parameters in MIB or cell-specific configuration information to determine CORESET for common search space, then the configuration can be established, but the UE cannot appropriately determine which parameter to reference leading to improper configuration
Solution Approach 1:
The patent applies parameter changes by using the frequency range as a changing condition to select between different parameter sets. When the frequency range is FR1, the UE uses parameters from MIB; when the frequency range is FR2, the UE uses parameters from cell-specific configuration information. This dynamic parameter selection based on frequency range resolves the ambiguity in parameter reference and ensures appropriate CORESET configuration.
2Ease of operation
If the UE uses a unified parameter reference method for all frequency ranges, then the determination process is simplified, but the configuration becomes inappropriate for certain frequency ranges
Solution Approach 1:
The patent applies local quality by tailoring the parameter reference method to specific frequency ranges. Instead of a unified approach, the system uses different parameter references for FR1 (MIB parameters) and FR2 (cell-specific configuration parameters). This localized approach ensures that each frequency range uses the most appropriate parameters for its specific characteristics, improving configuration appropriateness while maintaining clear operational guidelines.
Data Source
AI summary
A user terminal includes a receiving section that receives a master information block (MIB) in a cell, and a control section that determines the MIB or cell-specific configuration information about a downlink control channel to configure a control resource set for a common search space, based on a frequency range of the cell and a value determined based on a first parameter in the MIB.