PUCCH Resource Mapping for BWP Throughput
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Solution Overview
Problem
In next-generation mobile communication systems, the introduction of Bandwidth Parts (BWPs) for uplink communications poses a challenge in selecting appropriate PUCCH resources, leading to potential declines in communication throughput and spectral efficiency due to the lack of proper resource selection methods.
Innovation Solution
The proposed solution involves assigning PUCCH resource indices based on the configuration of the UL BWP, allowing for flexible control by selecting indices from the end of the active UL BWP's frequency and applying inter-slot frequency hopping, thereby enabling UE-specific and BWP-specific PUCCH resource mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If BWP-based control is implemented for uplink communications, then spectral efficiency and resource allocation flexibility are improved, but communication throughput may decline due to lack of proper PUCCH resource selection methods
Solution Approach 1:
The patent applies local quality by making PUCCH resource selection BWP-specific rather than uniform across the entire uplink bandwidth. Each BWP can have its own PUCCH resource indices and configurations, allowing optimized resource allocation tailored to local BWP characteristics such as bandwidth size, frequency location, and active state, thereby maintaining throughput while enabling flexible BWP-based control
Solution Approach 2:
The patent introduces dynamic PUCCH resource selection that adapts to the currently active UL BWP. When the UE switches between different UL BWPs, the PUCCH resource indices are dynamically selected from the corresponding BWP configurations, enabling the system to respond flexibly to changing communication conditions while maintaining optimal throughput performance
2Device complexity
If PUCCH resources are selected without proper BWP-based methodology, then system simplicity is maintained, but spectral efficiency and communication performance deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple PUCCH resource sets corresponding to different UL BWP configurations before actual communication occurs. The network configures PUCCH resources for each possible BWP in advance, so when the UE activates a specific BWP, the corresponding pre-configured PUCCH resources are automatically selected, eliminating the need for complex real-time resource selection while ensuring optimal spectral efficiency
Solution Approach 2:
The patent segments the PUCCH resource configuration into multiple BWP-specific resource sets. Instead of using a single unified PUCCH resource pool, the total PUCCH resources are divided into separate sets, each associated with a specific UL BWP configuration. This segmentation allows each BWP to have optimized PUCCH resources tailored to its specific characteristics, improving spectral efficiency without requiring complex cross-BWP resource management
Data Source
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Figure 3A~3B
AI summary
A user terminal, according to one aspect of the present invention, has a transmitting section that transmits uplink control information by using an uplink control channel resource in a certain bandwidth part (BWP), and a control section that determines an association between the uplink control channel resource and a certain index based on certain information, and specifies the uplink control channel resource. According to one aspect of the present invention, it is possible reduce the decline in communication throughput and the like even when BWP-based control is implemented.