Maximum Power Reduction for TX/RX Impairments Above 52.6 GHz
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for determining maximum power reduction (MPR) values in wireless communications do not adequately consider transmitter and receiver impairments, particularly phase noise and power amplifier non-linearity, leading to inefficient coverage and performance issues in carrier frequencies above 52.6 GHz.
Innovation Solution
A method to determine receiver impairment-maximum power reduction (RI-MPR) values that take into account both transmitter and receiver impairments, including phase noise and power amplifier non-linearity, and are dependent on subcarrier spacing to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing MPR determination methods are used, then device complexity is reduced, but reliability deteriorates due to inadequate consideration of TX and RX impairments
Solution Approach 1:
The patent changes the parameters used for MPR determination from generic values to specific impairment-based parameters. The gNB measures actual phase noise and power amplifier non-linearity characteristics, then determines MPR values based on these measured parameters rather than using fixed or standardized values, thereby improving reliability while managing complexity through targeted measurement approaches.
Solution Approach 2:
The patent implements a feedback mechanism where the gNB measures TX and RX impairments, determines appropriate MPR values, signals them to the UE, and the UE applies these MPR values in uplink transmissions. This closed-loop feedback system continuously adapts MPR settings based on actual channel conditions and device characteristics, improving link budget reliability.
2Area of stationary object
If MPR values are adjusted based on TX and RX impairments, then coverage is improved, but use of energy increases due to power adjustments
Solution Approach 1:
The patent applies partial power adjustment by determining MPR values that are specific to the measured impairment levels rather than applying maximum power reduction universally. The gNB signals partial MPR values that are sufficient to compensate for actual impairments without unnecessarily reducing transmit power below optimal levels, thereby maintaining coverage while managing energy consumption efficiently.
3Reliability
If impairment-based MPR values are implemented, then performance is optimized, but ease of operation deteriorates due to additional configuration requirements
Solution Approach 1:
The patent implements self-service by enabling the gNB to autonomously measure TX and RX impairments, determine appropriate MPR values, and signal them to the UE without requiring manual configuration or complex user intervention. The system automatically adapts MPR settings based on measured conditions, improving signal quality while maintaining operational simplicity through automated impairment compensation.
Data Source
AI summary
A method, apparatus, and a computer-readable storage medium are provided for transmission power handling with RF impairments. A method, apparatus, and a computer-readable storage medium are provided for adjusting maximum power reduction (MPR) values based on transmitter and receiver impairments. transmission power handling with RF impairments. In an example implementation, the method may include determining, by a user equipment, at least a first maximum power reduction (MPR) value for a radio link, the determining based at least on one or more receiver impairments associated with a receiver of the radio link; adjusting, by the user equipment, a transmit power and a quality of a signal being transmitted on the radio link based at least on the first MPR value; and transmitting, by the user equipment, the signal using the adjusted transmit power. In another example implementation, the method may include transmitting, by a gNB, a first MPR value or a parameter indicative of the first MPR value of a radio link to a user equipment; and receiving, by the gNB, a signal from the user equipment, wherein a transmit power and a quality of the signal is adjusted at the user equipment based at least on the first MPR value.