PUCCH Repetition Resource Configuration Using PRB Offsets
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Solution Overview
Problem
Existing NR systems fail to properly operate PUCCH signals in specific environments like NTN due to insufficient SNR, necessitating enhancements in PUCCH resource configurations, particularly for PUCCH repetition transmissions.
Innovation Solution
Configuring independent resources for PUCCH repetition transmissions by adjusting PRB offsets and repetition factors, allowing for separate time and frequency allocations, and implementing these changes in the 3GPP specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUCCH repetition transmission is applied to enhance SNR in NTN environment, then signal reliability is improved, but device complexity increases due to additional resource configuration requirements
Solution Approach 1:
The patent segments the PUCCH resource configuration into separate initial resources and repetition resources. The base station configures initial PUCCH resources for Msg 4 HARQ-ACK transmission, and separately configures repetition resources with different PRB offsets for repeated transmissions. This segmentation allows the system to achieve repetition-based reliability enhancement while maintaining clear distinction between different transmission phases, reducing configuration confusion and managing complexity through structured resource allocation.
2Productivity
If independent resources are configured for PUCCH repetition transmission, then transmission effectiveness is improved, but system complexity increases due to additional PRB offset and repetition factor configurations
Solution Approach 1:
The patent applies parameter changes by introducing a PRB offset parameter that is specifically configured for repetition transmissions. The base station signals a PRB offset value that is added to the initial PUCCH resource frequency position for repeated transmissions. This parameter change enables independent resource configuration for repetition transmissions, improving transmission effectiveness through frequency diversity while managing complexity through a clear and straightforward parameter addition approach rather than complete resource redesign.
Data Source
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AI summary
According to various embodiments of the present disclosure, there is provided a method of operating a user equipment (UE) in a wireless communication system. The method includes receiving first information of an additional physical resource block (PRB) offset from a base station; receiving second information of multiple repetition factors from the base station; determining a specific PRB for a repetition transmission of a physical uplink control channel (PUCCH) by applying the additional PRB offset a specific number of times based on a specific repetition factor among the multiple repetition factors; and performing the repetition transmission of the PUCCH based on the specific PRB.