Dynamic Retry Rate Adjustment for UAV Data Link Reliability
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face limitations in communication range due to wireless signal degradation and interference, which affects the reliability of data transmission, particularly in outdoor and far-range operations.
Innovation Solution
The method involves dynamically varying the retry rates and Forward Error Correction (FEC) values based on transmission statistics to optimize data transmission efficiency between UAVs and end points, using a processor and memory to analyze and adjust the transmission configuration to improve data packet delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless communication is used for real-time data transmission between UAV and ground control unit, then data can be transmitted in real time, but communication range is limited due to signal degradation and interference
Solution Approach 1:
The patent applies dynamics by making the retry rate variable rather than fixed. The system dynamically adjusts the retry rate based on real-time communication conditions, transitioning from a static configuration to an adaptive one that responds to changing signal quality and interference levels, thereby resolving the contradiction between transmission speed and reliability
Solution Approach 2:
The patent implements feedback mechanisms where transmission statistics are monitored and used to adjust the retry rate. The system receives feedback about communication performance and modifies its behavior accordingly, creating a closed-loop control system that balances speed and reliability based on actual conditions
2Reliability
If retry rate is increased to improve data packet delivery, then data integrity is improved, but bandwidth waste increases
Solution Approach 1:
The system dynamically adjusts the retry rate based on actual communication conditions rather than using a fixed high retry rate. This allows the system to achieve necessary reliability while minimizing bandwidth waste by only retrying when truly necessary, adapting the retry rate to match the actual signal quality and interference levels
Solution Approach 2:
The patent changes the parameter of retry rate from a fixed value to a variable parameter that is adjusted based on transmission statistics and communication conditions. This parameter change allows the system to optimize the balance between reliability and bandwidth efficiency by selecting appropriate retry rates for different operational scenarios
3Reliability
If Forward Error Correction (FEC) value is increased to reduce packet loss, then data integrity is improved, but transmission efficiency decreases
Solution Approach 1:
The system dynamically adjusts the FEC value based on communication conditions and transmission statistics. Rather than using a consistently high FEC value that would reduce transmission efficiency, the system adapts the FEC level to match actual signal quality, achieving necessary data integrity while maintaining optimal transmission efficiency for each operational scenario
Data Source
AI summary
Methods and apparatuses for enhancing vehicle range in a unmanned aircraft system is disclosed herein. An implementation of the method includes establishing a wireless communication channel between an unmanned aircraft and an end point and transmitting data from the unmanned aircraft to the end point over the wireless communication channel. This transmission is done in accordance with a transmission configuration, which defines a Forward Error Correction (FEC) value and a retry rate. The method further includes receiving transmission statistics related to transmitting the data and modifying the transmission configuration at least in part in response to the transmission statistics. The method also includes transmitting further data from the unmanned aircraft to the end point over the wireless communication channel in accordance with the modified transmission configuration.