Joint HARQ-ACK and SR Multiplexing via PUCCH Format 0 or 1
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Solution Overview
Problem
Current wireless communication systems face limitations in efficiently and flexibly multiplexing uplink control information with different priorities, particularly in joint reporting of HARQ-ACK and SR using PUCCH formats 0 or 1, which restricts communication capacity and efficiency.
Innovation Solution
A user equipment (UE) and base station (gNB) system that determines and satisfies a multiplexing timeline for joint reporting of uplink control information with different priorities, multiplexing a low priority HARQ-ACK and a high priority SR using PUCCH format 0 or 1, and transmitting/receiving these signals with appropriate cyclic shifts and power boosting to enhance priority differentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If joint reporting of HARQ-ACK and SR with different priorities is implemented using PUCCH format 0 or 1, then communication capacity and efficiency are improved, but device complexity increases due to the need for multiplexing timelines and priority differentiation mechanisms
Solution Approach 1:
The patent merges HARQ-ACK and SR reporting into a single PUCCH transmission by multiplexing different priority levels of control information. The UE combines low-priority HARQ-ACK with high-priority SR in one uplink control information transmission, enabling simultaneous delivery of multiple control signals without requiring separate PUCCH transmissions, thus improving communication capacity while managing complexity through structured multiplexing.
Solution Approach 2:
The patent segments the uplink control information into different priority classes (high priority and low priority) and assigns them to different PUCCH formats or transmission occasions. By dividing the control information based on priority, the system can manage complexity through clear separation rules while still enabling joint reporting when conditions are met, balancing productivity improvement with device complexity management.
2Measurement precision
If priority differentiation is implemented through cyclic shifts and power boosting, then signal differentiation accuracy is improved, but energy consumption increases due to power boosting requirements
Solution Approach 1:
The patent applies different transmission parameters (cyclic shifts and power boosting) selectively to different priority levels of control information. Instead of uniformly applying power boosting to all PUCCH transmissions, the system applies power boosting only to high-priority SR signals or to specific portions of the multiplexed transmission, enabling accurate signal differentiation while minimizing overall energy consumption by avoiding unnecessary power boosting on low-priority transmissions.
Data Source
AI summary
A user equipment (UE) is described. The UE includes a processor configured to determine that joint reporting of uplink control information (UCI) with different priorities is configured and a multiplexing timeline is satisfied. The processor is also configured to multiplex a low priority hybrid automatic repeat request-acknowledgement (HARQ-ACK) and a high priority scheduling request (SR) with a physical uplink control channel (PUCCH) format 0 or a PUCCH format 1. The UE also includes transmitting circuitry configured to transmit the multiplexed HARQ-ACK and SR on a PUCCH.