UAV Relay Path Selection for Disaster Packet Transmission
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Solution Overview
Problem
UAVs are unable to immediately transmit disaster relief video packets to base stations due to the collapse of base stations and abnormal communication networks during disasters.
Innovation Solution
A UAV network system comprising a child UAV group and a mother UAV, where the mother UAV selects travel points based on response times from child UAVs to create an optimized packet transmission path, reducing power dissipation and enabling immediate packet transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base stations are used for packet transmission, then communication coverage is provided, but base stations collapse sequentially during disasters causing transmission failure
Solution Approach 1:
The patent introduces UAVs as intermediary relay nodes between video packets and base stations. When base stations are unavailable, UAVs form an ad-hoc network to transmit packets, serving as a mediator that bridges the communication gap during disasters.
Solution Approach 2:
The system dynamically switches between base station transmission and UAV relay transmission based on real-time base station availability. The mother UAV dynamically selects travel points from child UAVs based on response times, adapting the transmission path as conditions change.
2Reliability
If multiple child UAVs are used for packet transmission, then transmission reliability is improved, but power consumption increases
Solution Approach 1:
The mother UAV changes the parameter of selecting travel points based on response time thresholds. By adjusting which child UAVs are selected as travel points according to their response performance, the system optimizes the balance between transmission reliability and power consumption.
Solution Approach 2:
The system implements feedback through response time measurement. The mother UAV sends test packets to child UAVs, measures their response times, and uses this feedback to dynamically select the most efficient travel points, ensuring reliable transmission while minimizing power consumption.
3Loss of time
If immediate packet transmission is required, then response time is reduced, but transmission path optimization is compromised
Solution Approach 1:
The system performs preliminary actions by pre-establishing the mother UAV and child UAV network structure before disaster occurs. When transmission is needed, the system only needs to dynamically select travel points rather than building the entire transmission infrastructure from scratch, reducing transmission time while maintaining optimization.
Data Source
AI summary
A UAV network system and an optimizing method of packet transmission path are provided, and the optimizing method of packet transmission path is performed by the UAV network system. The optimizing method of packet transmission path includes: receiving a target packet and obtaining a target base station from the target packet; transmitting a test packet to a first class child UAV second class child UAVs to obtain a first response signal and second response signals; according to the first response signal and the second response signals, generating a first response time and second response times; according to the first response time and the second response times, selecting at least one from the second class child UAVs as a travel point, and creating a travel list including the travel point; according to the travel list, transmitting the target packet to the target base station.