Unmanned aerial vehicle data distribution optimization method under energy constraint

A data distribution and energy-constrained technology, applied in wireless communication, radio transmission system, power management, etc., can solve problems such as poor communication stability and short communication distance

Active Publication Date: 2020-01-24
ARMY ENG UNIV OF PLA
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AI Technical Summary

Problems solved by technology

[0005] In view of the short communication distance and poor communication stability of ground IoT devices, this invention proposes a method based on UAV data distribution

Method used

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  • Unmanned aerial vehicle data distribution optimization method under energy constraint
  • Unmanned aerial vehicle data distribution optimization method under energy constraint
  • Unmanned aerial vehicle data distribution optimization method under energy constraint

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Embodiment

[0128] Embodiment: A specific embodiment of the present invention is described as follows, the system simulation adopts Matlab software, and the solution of the optimization problem adopts CVX software package. The following examples examine the effectiveness of the UAV data distribution optimization method designed in the present invention under energy constraints.

[0129] In this example, if figure 2 As shown, the drone flies in the air and distributes data to the IoT nodes on the ground. If not further stated, consider K = 3 ground nodes randomly distributed in 1000×1000m 2 In the square area of ​​, the flying height of the drone is H=80m, the starting position and the ending position are (0,0,80)m and (1000,1000,80)m respectively, and the maximum flying speed V max =30m / s, the maximum transmission power of UAV is P max =900mw, the maximum energy budget ε=40kJ; the channel model parameters are as follows: the channel bandwidth is B=1MHz, μ 0 =-40dB, σ 2 =-170dBm, b=1...

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Abstract

The invention provides an unmanned aerial vehicle data distribution optimization method under energy constraint. The method comprises the following steps: modeling based on an optimization problem ofunmanned aerial vehicle data distribution under an energy constraint; decoupling and converting the original optimization problem I into a new optimization problem II; dividing a problem 2 into two sub-problems: a trajectory optimization problem 3 and a transmitting power optimization problem 4, and updating the flight state of the unmanned aerial vehicle through trajectory optimization by fixingthe transmitting power of the unmanned aerial vehicle; the emission power optimization updates the emission power distribution of the unmanned aerial vehicle by fixing the flight state of the unmanned aerial vehicle; and alternately solving a trajectory optimization problem 3 and a transmitting power optimization problem 4, and outputting a result. Besides, the method is improved, the objective function of the fourth transmitting power optimization problem is replaced to be converted into the fifth problem, then the third problem and the fifth problem are alternately solved, and a result is output. According to the invention, the problems that ground Internet of Things equipment cannot transmit information remotely and data distribution is carried out under the assistance of an unmanned aerial vehicle when the communication stability is poor can be well solved.

Description

technical field [0001] The invention belongs to the field of Internet of Things and unmanned aerial vehicle communication of wireless communication technology, and specifically relates to an optimization method for unmanned aerial vehicle data distribution under energy constraints. Background technique [0002] In recent years, IoT technology has brought us into a new realm where connectivity, computing, and communication are ubiquitous. However, with the increase of users, the exponential growth of data requirements and the instability of communication quality also bring great challenges. At the same time, drone technology is also booming, and the application of drone technology to the Internet of Things has gained widespread attention and is seen as a promising solution to the above challenges. Due to the advantages of UAVs such as good flexibility, wide coverage, low cost, and on-demand deployment, UAVs can not only be used as wireless relays to improve the communication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/26H04W52/28H04W52/24H04B7/185
CPCH04W52/267H04W52/283H04W52/242H04B7/18504H04B7/18506
Inventor 丁国如谷江春王海超徐以涛徐煜华
Owner ARMY ENG UNIV OF PLA
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