PUCCH Resource Set Configuration for Dynamic Repetition Factor Indication
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Solution Overview
Problem
Current wireless communication systems face limitations in dynamically indicating a Physical Uplink Control Channel (PUCCH) repetition factor without increasing the length of the PUCCH resource indicator or reducing flexibility in resource selection.
Innovation Solution
A method and apparatus for configuring a PUCCH resource set with a first subset of PUCCH resources having a repetition factor per resource and a second subset without a repetition factor, allowing dynamic indication of the repetition factor based on the resource set configuration for both user equipment and base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the PUCCH resource indicator length is increased to dynamically indicate repetition factor, then the flexibility in indicating different repetition factors is improved, but the signaling overhead and complexity increase
Solution Approach 1:
The PUCCH resource set is divided into multiple subsets, where each subset corresponds to a specific repetition factor. The base station indicates which subset to use through the PUCCH resource indicator, allowing dynamic repetition factor indication without increasing the indicator length. This segmentation enables the system to convey additional information (repetition factor) using the existing indicator structure.
Solution Approach 2:
Instead of encoding the repetition factor directly in the PUCCH resource indicator (which would increase its length), the patent introduces a new dimension - the subset index. The repetition factor is indicated by selecting which subset the PUCCH resource belongs to, effectively moving the information from the indicator itself to the structure of the resource set organization.
2Device complexity
If the PUCCH resource indicator length is kept short, then the signaling overhead is reduced, but the ability to dynamically indicate different repetition factors is limited
Solution Approach 1:
The base station pre-configures multiple PUCCH resource subsets, each associated with a specific repetition factor, before actual PUCCH transmission. This preliminary organization of resources allows the system to dynamically indicate different repetition factors using only the subset selection, maintaining a compact indicator length while achieving adaptability.
Solution Approach 2:
The PUCCH resource subset acts as an intermediary between the base station's scheduling decision and the UE's transmission configuration. By organizing resources into subsets and indicating the relevant subset, the system indirectly conveys the repetition factor information without requiring direct encoding in the resource indicator.
3Manufacturing precision
If PUCCH resources are configured with per-resource parameters, then the precision of resource configuration is improved, but the configuration complexity and overhead increase
Solution Approach 1:
Per-resource parameters such as repetition factor are applied locally to each PUCCH resource within a subset, rather than uniformly across all resources. This allows precise control of transmission parameters for each resource while maintaining configuration efficiency through the subset structure, reducing overall configuration overhead.
Solution Approach 2:
The patent changes the parameter organization from individual per-resource configuration to subset-based parameter assignment. By associating parameters like repetition factor with subsets rather than individual resources, the system achieves precise resource configuration while significantly reducing configuration overhead and complexity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a physical uplink control channel (PUCCH) resource set configuration including a first subset of PUCCH resources and a second subset of PUCCH resources, wherein PUCCH resources in the first subset of PUCCH resources are configured with a parameter per PUCCH resource, and wherein PUCCH resources in the second subset of PUCCH resources do not include a parameter per PUCCH resource. The UE may identify a parameter to be used for transmitting a PUCCH communication based at least in part on the PUCCH resource set configuration. The UE may transmit one or more repetitions of the PUCCH communication based at least in part on the parameter. Numerous other aspects are described.