PUCCH Resource Multiplexing for HARQ-ACK and UCI Transmission
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Solution Overview
Problem
The increasing number of user equipment (UEs) and the limited radio resources in base stations (BSs) pose a challenge for efficient data and control information transmission in wireless communication systems, necessitating a method to effectively utilize high-density nodes or UEs for communication, while also addressing latency issues.
Innovation Solution
A method for transmitting hybrid automatic repeat request (HARQ)-ACK information by determining a third physical uplink control channel (PUCCH) resource for multiplexing uplink control information (UCI) and HARQ-ACK payloads, allowing efficient transmission of HARQ-ACK and UCI in a specific PUCCH resource, while the remaining HARQ-ACK payloads are transmitted in their respective resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of UEs served by a BS is increased to meet high data throughput demand, then the data throughput capacity is improved, but the radio resources become insufficient for efficient transmission
Solution Approach 1:
The patent merges multiple PUCCH resources that overlap in the time domain into a single third PUCCH resource. This combines multiple HARQ-ACK payload transmissions with UCI transmission into one unified resource, allowing the BS to receive both types of information simultaneously without requiring separate resources for each transmission type.
Solution Approach 2:
The third PUCCH resource is designed to serve multiple functions: it can transmit both HARQ-ACK information and UCI (uplink control information) simultaneously. This multi-functional resource eliminates the need for separate dedicated resources for each transmission type, thereby increasing resource utilization efficiency.
2Reliability
If multiple PUCCH resources are allocated for HARQ-ACK and UCI transmission, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple overlapping PUCCH resources into a single third PUCCH resource, reducing the number of resources the UE must manage. This merging process simplifies resource allocation and transmission procedures while maintaining the ability to transmit both HARQ-ACK and UCI information reliably.
Solution Approach 2:
The patent segments the transmission process into two parts: HARQ-ACK information is transmitted in the third PUCCH resource, while UCI is also transmitted in the same resource. This segmentation allows for organized management of different transmission types within a unified resource structure, reducing complexity.
3Productivity
If a third PUCCH resource is determined for multiplexing UCI and HARQ-ACK payload, then the resource utilization efficiency is improved, but the determination process complexity increases
Solution Approach 1:
The patent performs preliminary identification of overlapping PUCCH resources before determining the third PUCCH resource for multiplexing. By pre-identifying which resources overlap in the time domain, the system can systematically determine the appropriate third resource without complex real-time calculations, thereby reducing determination complexity.
Solution Approach 2:
The patent uses an intermediary selection process to determine the third PUCCH resource. Instead of directly calculating the optimal resource, the system uses intermediate rules and criteria (such as selecting from a set of candidate resources) to arrive at the final third PUCCH resource, simplifying the determination process.
Data Source
AI summary
The present specification relates to a wireless communication system, and to a method and a device therefore, the method comprising: determining, in a state in which a first PUCCH resource related to a first UCI overlaps, in a time domain, a plurality of PUCCH resources related respectively to a plurality of HARQ-ACK payloads, a third PUCCH resource for multiplexing a first HARQ-ACK payload and the first UCI on the basis of the first UCI and the first HARQ-ACK payload related to one (a second PUCCH resource) of the plurality of PUCCH resources; and transmitting the first HARQ-ACK payload and the first UCI on the third PUCCH resource.