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Optimization method of UAV data distribution under energy constraints

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: 2022-07-19
ARMY ENG UNIV OF PLA
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  • Abstract
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  • Claims
  • Application Information

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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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  • Optimization method of UAV data distribution under energy constraints
  • Optimization method of UAV data distribution under energy constraints
  • Optimization method of UAV data distribution under energy constraints

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Embodiment

[0128] Embodiment: A specific embodiment of the present invention is described below, the system simulation uses Matlab software, and the CVX software package is used to solve the optimization problem. The following examples examine the effectiveness of the UAV data distribution optimization method under the energy constraint designed by the present invention.

[0129] In this embodiment, as figure 2 As shown, the drone flies in the air and distributes data to IoT nodes on the ground. If there is no further explanation, consider K=3 ground nodes randomly distributed in 1000×1000m 2 In the square area of ​​​​the UAV, the flying height of the UAV is H=80m, the starting position and the ending position are (0, 0, 80) m and (1000, 1000, 80) m respectively, and the maximum flight speed V max = 30m / s, the maximum transmit power of the 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 =-4...

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Abstract

The invention proposes an optimization method for unmanned aerial vehicle data distribution under energy constraints. The steps of the method are as follows: modeling the optimization problem of UAV data distribution based on energy constraints; decoupling the original optimization problem 1 into a new optimization problem 2; problem 2 is divided into two sub-problems: trajectory optimization problem 3 and transmit power optimization Problem 4, trajectory optimization updates the UAV flight state by fixing the UAV launch power; transmission power optimization updates the UAV launch power distribution by fixing the UAV flight state; alternately solve the trajectory optimization problem three and the launch power optimization problem Four and output the results. In addition, the above method is improved, by replacing the objective function of the transmit power optimization problem 4, it is transformed into the problem 5, and then the problem 3 and the problem 5 are solved alternately and the result is output. The invention can better solve the problem of data distribution under the assistance of unmanned aerial vehicles when ground Internet of Things equipment cannot transmit information over a long distance and the communication stability is poor.

Description

technical field [0001] The invention belongs to the field of Internet of Things and unmanned aerial vehicle communication of wireless communication technology, in particular 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, exponentially increasing data demands and unstable 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. Because UAVs have the advantages of good flexibility, wide coverage, low cost, and on-demand deployment, UAVs can not only be used as wireless relays to improve the communication connection and coverage of g...

Claims

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Application Information

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Patent Type & Authority Patents(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