PUCCH Resource Allocation via Dynamic Payload-Based Selection
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Solution Overview
Problem
In future radio communication systems, determining uplink control channel resources for user terminals based on payload size is complicated due to limited numbers of PUCCH resources, leading to increased processing load and complexity.
Innovation Solution
Configuring uplink control channel resource sets with an appropriate number of resources by using higher layer signaling and downlink control information, allowing user terminals to select resources based on payload size, and associating certain field values in DCI with PUCCH resources to simplify the scheduler and reduce network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the number of PUCCH resources in a resource set is limited to a certain value or larger, then the processing load and complexity are increased, but the resource allocation capability is maintained
Solution Approach 1:
The patent applies dynamics by making the PUCCH resource set size adjustable rather than fixed. The resource set size is dynamically determined based on the payload size of uplink control information, allowing the system to adapt between small resource sets for small payloads and large resource sets for large payloads. This resolves the contradiction by enabling the system to maintain low processing load for common cases while preserving resource allocation capability when needed.
Solution Approach 2:
The patent changes the parameter of PUCCH resource set size based on the payload size parameter. By establishing a correspondence relationship between payload size ranges and resource set sizes, the system dynamically adjusts the number of resources allocated. This parameter change approach allows the system to optimize processing load according to actual communication needs while maintaining sufficient resource allocation capability.
2Adaptability or versatility
If multiple candidate PUCCH resource sets are pre-configured by higher layer signaling, then the resource selection flexibility is improved, but the signaling overhead is increased
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple PUCCH resource sets through higher layer signaling before actual resource allocation is needed. These pre-configured resource sets are then selected based on the payload size of the uplink control information. This approach provides resource selection flexibility without requiring dynamic signaling during each transmission, as the resource sets are already prepared in advance.
Solution Approach 2:
The patent segments the PUCCH resource allocation into multiple discrete resource sets, each suitable for specific payload size ranges. Instead of managing a single large resource set, the system divides resources into segmented sets (e.g., first resource set for small payloads, second resource set for large payloads). This segmentation allows flexible resource selection while reducing the complexity of resource management and signaling.
3Device complexity
If a fixed PUCCH resource set size is used for all payload sizes, then the configuration complexity is reduced, but the resource allocation efficiency is decreased
Solution Approach 1:
The patent transforms the fixed PUCCH resource set size into a dynamic configuration that varies with payload size. The system automatically selects appropriate resource set sizes based on the payload characteristics, eliminating the need for manual configuration of specific sizes. This dynamic approach maintains low configuration complexity while significantly improving resource allocation efficiency through automatic adaptation.
Solution Approach 2:
The patent implements self-service by enabling the system to automatically determine the appropriate PUCCH resource set size based on the payload size of uplink control information. The correspondence relationship between payload sizes and resource set sizes is established and maintained by the system itself, eliminating the need for external configuration or manual adjustment. This self-service mechanism reduces configuration complexity while optimizing resource allocation efficiency.
Data Source
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Figure 2A~2C
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AI summary
A user terminal includes a receiving section that receives, via higher layer signaling, configuration information related to a physical uplink control channel (PUCCH) resource set including one or more physical uplink control channel (PUCCH) resources, and a control section that determines a PUCCH resource associated with a value of a certain field in downlink control information. According to an aspect of the present disclosure, an uplink control channel resource set can be configured that includes an appropriate number of uplink control channel resources.