PUCCH Power Control with Format-Specific Target SINR
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Solution Overview
Problem
Existing closed-loop power control methods for PUCCH cannot accurately adjust terminal uplink transmit power due to the use of a single fixed target SINR, leading to issues such as DTX occurrences, poor demodulation performance, and inefficient power consumption across different PUCCH Formats.
Innovation Solution
A method to determine the Format of a physical uplink control channel (PUCCH) and set specific target transmit powers for each Format, adjusting the transmit power within a hysteresis range to accommodate varying reception performances, and dynamically adjust target transmit powers based on environmental changes and communication metrics like DTX and downstream traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single fixed target SINR is used for closed-loop power control, then the control mechanism is simple, but the transmit power adjustment accuracy deteriorates because different PUCCH Formats have different reception performances
Solution Approach 1:
The patent applies local quality by assigning different target SINR values to different PUCCH Formats based on their specific reception performances. Instead of using a single uniform target SINR for all formats, the system determines format-specific target SINR values that are optimized for each format's characteristics, thereby improving power adjustment accuracy for each local case while maintaining overall system simplicity
Solution Approach 2:
The patent implements dynamics by making the target SINR value adaptable rather than fixed. The system dynamically determines the target SINR based on the detected PUCCH Format, allowing the power control mechanism to adjust to different operational conditions. This dynamic adaptation enables accurate power control across varying formats without requiring complex manual configuration
2Ease of manufacture
If closed-loop power control uses a fixed target SINR, then the implementation is straightforward, but DTX occurrences increase and demodulation performance deteriorates
Solution Approach 1:
The patent applies parameter changes by modifying the target SINR parameter based on the PUCCH Format. The system changes the target SINR value according to the detected format, which optimizes the power control for each format's specific requirements. This parameter adaptation improves demodulation performance and reduces DTX occurrences while maintaining implementation simplicity through automated format detection
3Device complexity
If a single target SINR is used for all PUCCH Formats, then the power control system is simple, but power consumption efficiency deteriorates
Solution Approach 1:
The patent applies local quality by optimizing the target SINR parameter for each specific PUCCH Format based on its reception characteristics. This format-specific optimization ensures that each format operates at the most efficient power level, avoiding unnecessary power consumption while maintaining reliable communication. The system achieves this without significantly increasing overall complexity through automated detection and configuration
Data Source
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AI summary
The present application discloses a transmit power adjustment method, a transmit power adjustment apparatus, a transmit power adjustment device, and a storage medium, and relates to the technical field of communications. The transmit power adjustment method includes: determining a Format of a physical uplink control channel, PUCCH, of a terminal device; determining a target transmit power for each Format; and adjusting the transmit power of each Format in the terminal device to within a hysteresis range of a corresponding target transmit power.