Terminal PUCCH Resource Mapping for Multi-Panel UL Control
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Solution Overview
Problem
In future radio communication systems, the appropriate control of uplink (UL) transmission using multiple panels (or beams) for simultaneous transmission is not adequately addressed, leading to potential degradation in system performance such as reduced throughput.
Innovation Solution
A terminal is equipped with a receiving section to obtain configuration information for channel state information (CSI) and simultaneous transmission of physical uplink control channels (PUCCHs) using multiple panels. The control section determines the PUCCH resource to which multiple CSIs in the same time domain are mapped based on the received configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous UL transmission using multiple panels is implemented, then UL throughput and reliability are improved, but system performance degradation occurs due to insufficient control mechanisms
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting PUCCH resource allocation parameters and CSI reporting parameters based on the simultaneous transmission configuration. The base station configures specific PUCCH resources for each panel and adjusts CSI reporting timing and content parameters to optimize the simultaneous UL transmission while preventing system performance degradation.
Solution Approach 2:
The patent implements dynamics by enabling flexible and dynamic control of PUCCH resources and CSI reporting based on actual transmission conditions. The system can adaptively allocate PUCCH resources to different panels dynamically and adjust CSI reporting behavior according to the simultaneous transmission configuration, allowing the system to respond to changing channel conditions and traffic requirements.
2Adaptability or versatility
If multiple PUCCHs are transmitted simultaneously using multiple panels, then UL control capability is enhanced, but resource mapping complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the PUCCH resource allocation into separate, independent resource sets for each panel. Each panel is configured with its own dedicated PUCCH resources, and CSI reports are mapped to specific panels based on their spatial relationships. This segmentation simplifies the overall resource mapping by treating each panel's resources independently rather than managing a single complex shared resource pool.
Solution Approach 2:
The patent uses the panel concept as an intermediary layer between the base station and the PUCCH resources. The panel acts as a mediator that organizes and manages the relationship between multiple PUCCH transmissions and their corresponding CSI reports. This intermediary structure simplifies resource mapping by providing a clear hierarchical relationship: base station configures panel-specific resources, which then map to specific CSI reports based on spatial relationships.
3Reliability
If CSIs from multiple panels are mapped to PUCCH resources, then transmission reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies local quality by associating specific CSI reports with specific panels based on their spatial relationships. Each panel's PUCCH resources are optimized for that panel's specific transmission characteristics and channel conditions. This localized approach improves reliability by ensuring that each panel's CSI feedback is transmitted through the most appropriate resources, while the overall complexity is managed by treating each panel's resource allocation as a separate, localized problem.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives first configuration information related to a plurality of channel state informations (CSIs) and second configuration information related to simultaneous transmission of physical uplink control channels (PUCCHs) using a plurality of panels, and a control section that determines, based on the first configuration information and the second configuration information, a PUCCH resource to which the plurality of CSIs in a same time domain are mapped. According to one aspect of the present disclosure, even when UL transmission is performed by using a plurality of panels, it is possible to appropriately control the UL transmission.