PUCCH Resource Indicator for Dynamic Repetition Factor Across Multiple Types
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Solution Overview
Problem
Current wireless communication systems face challenges in dynamically indicating a Physical Uplink Control Channel (PUCCH) repetition factor applicable to multiple PUCCH types, leading to increased overhead signaling and inefficiencies, particularly for ACK/NACK feedback, periodic CSI, and SPS.
Innovation Solution
A configuration that includes a Physical Uplink Control Channel (PUCCH) resource indicator (PRI) indicating a repetition factor, allowing dynamic switching across different PUCCH resource groups, enabling the repetition factor to be applied to multiple PUCCH types such as ACK/NACK, periodic CSI, and SPS feedback, reducing overhead signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate indication mechanisms are used for each PUCCH type, then each PUCCH type can have optimized control parameters, but signaling overhead increases significantly
Solution Approach 1:
The patent creates a universal indication mechanism where a single PUCCH resource indicator (PRI) field in downlink control information can indicate PUCCH repetition factors applicable to multiple PUCCH types simultaneously. This multi-functional approach allows ACK/NACK feedback, periodic CSI, and SPS feedback to share common indication resources, reducing signaling overhead while maintaining type-specific optimization capabilities through configured associations between PRI values and PUCCH type parameters
2Adaptability or versatility
If dynamic indication of PUCCH repetition factor is implemented, then system flexibility and adaptability improve, but complexity of resource management increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring associations between PRI field values and PUCCH repetition factors before actual PUCCH transmission occurs. The network pre-establishes mapping relationships between downlink control information resources and uplink PUCCH resource configurations, including repetition factors. This allows dynamic adaptation during transmission without requiring complex real-time calculations, reducing device complexity while maintaining flexibility
Solution Approach 2:
The patent utilizes parameter changes by allowing the PRI field to dynamically indicate different PUCCH repetition factors based on current system conditions. The repetition factor parameter can be changed through the PRI indication to adapt to varying channel conditions, traffic types, and quality requirements for different PUCCH types (ACK/NACK, CSI, SPS feedback), achieving dynamic optimization without complex management overhead
Data Source
AI summary
This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for supporting a physical uplink control channel (PUCCH) resource indicator (PRI). In some aspects, a PUCCH repetition factor is dynamically indicated that is applicable to multiple PUCCHs or multiple PUCCH types. For example, an apparatus receives downlink control information (DCI) that schedules a first PDSCH and includes a PRI indicating a repetition factor of a first PUCCH associated with the first PDSCH and at least one additional PUCCH. In some other aspects, the PRI includes a repetition indicator associated with a repetition factor, such as a PUCCH repetition factor. In one aspect, a repetition indicator associated with a repetition factor is included in DCI and the repetition indicator is associated with multiple PUCCH types.