UAV Ground Image Transmission Module With Buffer-Based Rate Control
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Solution Overview
Problem
Existing unmanned aerial vehicle systems face challenges in quickly and stably uploading files to various modules due to varying and fluctuating transmission bandwidths among links.
Innovation Solution
A ground image transmission module that receives data packets in parallel from terminal equipment, adjusts transmission rates based on buffer queue sizes, and optimizes data distribution across communication channels to utilize bandwidth efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data is transmitted through multiple modules with different communication links, then data can reach multiple destinations, but transmission bandwidth fluctuates greatly and stability deteriorates
Solution Approach 1:
The ground image transmission module monitors the data size in its buffer queue and uses this feedback to dynamically adjust transmission rates. When buffer data size exceeds a threshold, the module reduces transmission rate to prevent overflow and packet loss, ensuring stable transmission across fluctuating bandwidth conditions
Solution Approach 2:
The system implements dynamic transmission rate adjustment based on real-time buffer status. The transmission rate is not fixed but adapts continuously to changing network conditions and buffer occupancy, allowing the system to maintain reliability while handling variable bandwidth scenarios
2Productivity
If transmission rate is increased to improve upload speed, then productivity improves, but packet loss increases due to bandwidth fluctuations
Solution Approach 1:
The ground image transmission module continuously monitors buffer queue depth and uses this information to adjust transmission rates. This feedback mechanism ensures that transmission speed matches actual bandwidth capacity, maximizing productivity while preventing packet loss from overwhelming the buffer
Solution Approach 2:
The system changes the transmission rate parameter dynamically based on buffer occupancy levels. When buffer data size is within acceptable thresholds, higher transmission rates are used to maximize speed; when thresholds are exceeded, rates are reduced to ensure reliable delivery, thus optimizing both productivity and reliability
Data Source
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AI summary
The embodiments of the present invention disclose a data transmission method, device and system of an unmanned aerial vehicle system and a ground image transmission module. The data transmission method includes: receiving, by the ground image transmission module, at least two data packets sent in parallel by terminal equipment, each data packet in the at least two data packets corresponding to one module in the unmanned aerial vehicle system; and then, transmitting, by the ground image transmission module, the data packets corresponding to the modules to the modules through a communication channel between the modules corresponding to the data packets in the unmanned aerial vehicle system. That is, according to the embodiments, the transmission of the data packet corresponding to each module is rapidly realized by utilizing the link bandwidth between the terminal equipment and the ground image transmission module as well as the link bandwidth between the modules.