UAV Transmit Power Control via Dynamic Margin Adjustment
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Solution Overview
Problem
Unmanned aerial vehicle (UAV) control systems face challenges in controlling transmit power effectively, leading to reduced CNPC link availability and increased interference with adjacent channels due to the use of dynamic channels and propagation delays.
Innovation Solution
A method and apparatus for controlling transmit power in UAV control systems, which involves connecting the UAV to a ground radio station via mission and non-mission data links, checking maximum transmit power, calculating a margin value, and determining the required transmit power to minimize interference and ensure link availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the unmanned aerial vehicle transmits signals with maximum transmit power to increase CNPC link availability, then the link availability is improved, but interference with adjacent channels increases and unnecessary transmit power is consumed
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the transmit power of the unmanned aerial vehicle based on channel conditions, margin values, and power control commands. Instead of using fixed maximum power, the system modifies the power parameter adaptively to maintain link availability while reducing interference and power consumption when full power is not needed.
2Device complexity
If power control command accuracy is reduced due to propagation delay, then system complexity is decreased, but transmit power control precision deteriorates
Solution Approach 1:
The patent applies preliminary action by calculating and applying margin values in advance to compensate for propagation delay effects. The margin value is determined based on channel characteristics before the power control command is executed, allowing the system to pre-correct for the delay without adding complex real-time compensation mechanisms.
3Adaptability or versatility
If the unmanned aerial vehicle uses dynamic channels for communication, then channel utilization is improved, but control over transmit power becomes more difficult
Solution Approach 1:
The patent applies feedback by implementing a closed-loop power control system where the ground radio station sends power control commands based on received signal quality, and the unmanned aerial vehicle adjusts its transmit power accordingly. This feedback mechanism enables effective power control on dynamic channels by continuously adapting to changing channel conditions without requiring overly complex open-loop control algorithms.
Data Source
AI summary
Disclosed is a method and apparatus for transmitting data of an unmanned aerial vehicle control system. According to an embodiment of the present disclosure, provided is a method of transmitting data of an unmanned aerial vehicle control system, the method including: connecting an unmanned aerial vehicle to a ground radio station via a mission data link and a non-mission data link; checking a maximum transmit power of the non-mission data link; checking a margin value of the non-mission data link considering a state of the unmanned aerial vehicle; checking a required transmit power of the non-mission data link by applying the margin value of the non-mission data link; and determining a transmit power of the non-mission data link by comparing the maximum transmit power with the required transmit power.