PUCCH Resource Selection for Multiplexed High-Priority HARQ-ACK
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Solution Overview
Problem
The reliability of high-priority HARQ-ACK codebooks cannot be ensured after multiple HARQ-ACK codebooks are multiplexed, leading to inconsistent understanding between the base station and the UE regarding the used PUCCH resource.
Innovation Solution
Determine the PUCCH resource after multiplexing by using the PRI value from the last DCI corresponding to the HARQ-ACK codebook with higher priority, ensuring consistent resource allocation and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple HARQ-ACK codebooks are multiplexed into a designated PUCCH resource, then resource utilization efficiency is improved, but the complexity of resource determination increases
Solution Approach 1:
The patent changes the parameter used for PUCCH resource determination by introducing a new indication method in DCI format 1_1 or 1_2. Instead of using separate PRI fields for each codebook, the patent uses a single PRI field that indicates a PUCCH resource for multiplexed transmission, thereby simplifying the resource determination process while maintaining support for multiple codebooks.
2Device complexity
If separate PUCCH resources are allocated for each HARQ-ACK codebook, then resource determination is simplified, but resource waste increases
Solution Approach 1:
The patent merges multiple PUCCH resource allocations into a single designated PUCCH resource that can carry multiple HARQ-ACK codebooks simultaneously. This is achieved by configuring a PUCCH resource indicator in the DCI that points to a resource capable of multiplexing acknowledgments from different codebooks, thereby eliminating the need for separate resource allocations and reducing resource waste.
3Adaptability or versatility
If PUCCH resources are dynamically selected from a codebook set, then adaptability is improved, but the risk of resource conflict increases
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of a PUCCH resource indicator field in the DCI that mediates between the need for dynamic resource selection and conflict avoidance. The network configures a set of candidate PUCCH resources and uses the indicator to select and assign a specific resource for multiplexed transmission, ensuring that resource conflicts are avoided while maintaining adaptability to different transmission scenarios.
Data Source
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AI summary
The present application provides resource determining and receiving methods and devices, an electronic device, and a storage medium. The resource determining method comprises: multiplexing a plurality of hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebooks into a designated physical uplink control channel (PUCCH) resource, wherein the designated PUCCH resource at least comprises one of the following: a PUCCH resource determined according to a PUCCH resource indicator (PRI) in tail downlink control information (DCI) in DCI corresponding to a physical downlink shared channel (PDSCH) corresponding to a high-priority HARQ-ACK codebook among the plurality of HARQ-ACK codebooks, and a PUCCH resource corresponding to the high-priority HARQ-ACK codebook among the plurality of HARQ-ACK codebooks.