Terminal Uplink Power Allocation for Uneven Antenna Path Loss
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Solution Overview
Problem
In wireless communications, particularly with multi-antenna terminals, uneven uplink path losses across different antennas result in suboptimal uplink transmission performance due to conventional power allocation methods that do not account for varying signal attenuations.
Innovation Solution
A power configuration method that dynamically allocates transmit power across multiple ports of a terminal device based on signal-to-noise ratio (SNR), received signal strength indicator (RSSI), reference signal receiving power (RSRP), and channel path loss, ensuring maximum power utilization and improved uplink performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal device evenly allocates uplink transmit power to multiple uplink ports according to conventional technology, then the power allocation is simple and uniform, but optimal uplink transmission performance cannot be obtained due to different path losses of different ports
Solution Approach 1:
The patent applies local quality by allocating different transmit powers to different uplink ports based on their specific channel conditions. Each port's power is determined by its individual path loss characteristics, allowing the system to optimize performance for each port's specific environment rather than applying a uniform power allocation across all ports.
Solution Approach 2:
The patent implements dynamics by making the power allocation adaptive and variable. The terminal device dynamically adjusts the transmit power of each uplink port based on real-time channel conditions and path loss measurements, enabling the system to respond to changing environmental conditions and maintain optimal performance.
2Productivity
If the terminal device allocates more power to ports with better channel conditions, then uplink transmission performance is improved, but the power allocation becomes more complex and requires additional measurements and calculations
Solution Approach 1:
The patent applies feedback by using measured path loss values from each uplink port to determine power allocation decisions. The terminal device measures the path loss for each port, uses this feedback information to calculate appropriate transmit powers, and adjusts power allocation accordingly, creating a closed-loop system that continuously optimizes based on actual channel conditions.
Solution Approach 2:
The patent implements parameter changes by varying the transmit power parameter for each uplink port based on measured path loss parameters. The system changes the power allocation parameters dynamically according to the specific channel conditions of each port, allowing optimization of uplink throughput through parameter adaptation.
3Productivity
If the terminal device uses multiple transmit antennas for MIMO transmission, then spectral efficiency and system capacity are improved, but the total transmit power requirement increases and power management becomes more difficult
Solution Approach 1:
The patent applies local quality by assigning different power levels to different antenna ports based on their individual path loss characteristics. Instead of uniformly increasing power across all antennas, the system selectively allocates power to ports with better channel conditions, improving spectral efficiency while managing total power consumption more effectively.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the transmit power parameters of individual antenna ports based on measured path loss values. This allows the MIMO system to adapt its power distribution to current channel conditions, optimizing the balance between spectral efficiency and total power consumption.
Data Source
AI summary
This application provides a power configuration method and an apparatus, so that a terminal device is enabled to allocate as much uplink transmit power as possible to a first port, and allocate first transmit power as transmit power of a second port, so that total transmit power of the terminal device reaches calculated transmit power indicated by a network device for sending; or both the first port and the second port are enabled to be used to perform sending by using respective maximum transmit power supported by the first port and the second port, so that receive power of the network device to receive an uplink signal is maximized, thereby improving uplink performance.