Dynamic PUCCH Resource Selection for Variable UCI Payloads
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Solution Overview
Problem
The existing wireless networks face challenges in efficiently handling varying payload sizes of channel state information (CSI) parts on physical uplink control channels (PUCCH), leading to potential resource wastage or performance degradation due to semi-static resource allocation that does not accommodate dynamic changes in payload sizes.
Innovation Solution
The proposed solution involves configuring a first PUCCH resource and a set of associated second PUCCH resources, allowing for the transmission of UCI parts based on payload size, with options for time or frequency multiplexing and dynamic indication through DCI, ensuring optimal resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If semi-static resource allocation is used for PUCCH, then resource configuration is simple, but resource utilization efficiency deteriorates when payload sizes vary dynamically
Solution Approach 1:
The patent applies dynamics by transitioning from semi-static resource allocation to dynamic resource selection. The UE dynamically selects from multiple PUCCH resources based on the actual payload size of UCI part 2, allowing the system to adapt to varying data demands and optimize resource utilization in real-time.
Solution Approach 2:
The patent changes the parameter of resource selection from fixed to variable. By introducing a selection mechanism that varies based on payload size (e.g., selecting different PUCCH resources based on whether payload is small, medium, or large), the system optimizes resource efficiency without excessive complexity.
2Device complexity
If a single PUCCH resource is configured, then device complexity is low, but reliability deteriorates when payload sizes vary causing resource wastage or performance degradation
Solution Approach 1:
The patent segments the PUCCH resource configuration into multiple resources (first PUCCH resource and second PUCCH resource) with different capabilities. This segmentation allows the system to match specific resources to specific payload sizes, preventing resource wastage and ensuring reliable transmission for varying UCI sizes.
Solution Approach 2:
The patent introduces dynamic selection between segmented resources based on payload characteristics. The UE determines which resource to use based on the actual payload size, ensuring reliable transmission while avoiding the complexity of over-configuring all possible scenarios.
3Reliability
If PUCCH resources are allocated to accommodate maximum payload size, then reliability is improved for large payloads, but resource wastage increases for small payloads
Solution Approach 1:
The patent applies local quality by providing different PUCCH resources with different characteristics tailored to specific payload sizes. Each resource is optimized for its intended use case (e.g., one resource for small payloads, another for large payloads), ensuring efficient resource utilization across all scenarios rather than over-allocating for maximum capacity.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to optimized uplink transmission. A device may receive a configuration of a first physical uplink control channel (PUCCH) resource and a set of second PUCCH resources associated with a first PUCCH resource. The device may transmit a first uplink control information (UCI) part on the first PUCCH resource. The device may select a second PUCCH resource from the set of second PUCCH resources based on a payload size of a second UCI part determined from the first UCI part. The device may transmit the second UCI part on the selected second PUCCH resource.