Joint Uplink Power Control for PUSCH and PUCCH Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power control for data and control channels, particularly in 5G/NR systems, which are crucial for supporting diverse applications and high data traffic demands.
Innovation Solution
The implementation of power control mechanisms for both physical uplink shared channels (PUSCH) and physical uplink control channels (PUCCH) using joint closed-loop power control adjustments, where a user equipment (UE) or base station determines and applies specific power levels for each channel based on transmit power control (TPC) commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate power control is used for PUSCH and PUCCH channels, then each channel can be controlled independently, but the system complexity increases and power efficiency decreases
Solution Approach 1:
The patent combines separate power control mechanisms for PUSCH and PUCCH channels into a unified joint closed-loop power control system. The base station transmits a single TPC command that simultaneously adjusts power for both channels, and the UE applies this single command to both channels, merging what were previously separate control loops into one integrated system.
2Productivity
If joint closed-loop power control is implemented for PUSCH and PUCCH, then power efficiency improves and system performance enhances, but the requirement for coordinated TPC command transmission and processing increases system synchronization demands
Solution Approach 1:
The patent implements a closed-loop feedback mechanism where the base station monitors uplink channel conditions and transmits TPC commands to adjust UE transmit power. The UE applies the TPC command and feeds back acknowledgments, creating a continuous feedback loop that enables dynamic power optimization while maintaining reliability through coordinated control.
Data Source
AI summary
Apparatuses and methods for power control for data and control channels. A method of operating a user equipment includes receiving information for a first transmission occasion for a physical uplink shared channel (PUSCH) and a second transmission occasion for a second physical uplink control channel (PUCCH) and receiving a first transmit power control (TPC) command. The method further includes determining a first power control adjustment state based on the first TPC command and a second power control adjustment state based on the first power control adjustment state. The method further includes transmitting the PUSCH in the first transmission occasion using the first power and the PUCCH in the second transmission occasion using the second power.