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A resource allocation and flight route optimization method for unmanned aerial vehicle relay system

A relay system and flight route technology, applied in the field of communication, can solve problems such as the inability to adjust user weights and the inability to maximize the weighted sum of user rates, and achieve a wide range of applications

Active Publication Date: 2021-06-15
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the unmanned aerial vehicle in the communication field cannot adjust the user's weight according to the different QoS requirements of different users in the prior art, and cannot maximize the weighted sum of all user rates, the present invention provides an unmanned aerial vehicle relay Systematic Resource Allocation and Flight Route Optimization Method

Method used

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  • A resource allocation and flight route optimization method for unmanned aerial vehicle relay system
  • A resource allocation and flight route optimization method for unmanned aerial vehicle relay system
  • A resource allocation and flight route optimization method for unmanned aerial vehicle relay system

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Embodiment 1

[0106] Such as figure 1 As shown, a method for resource allocation and flight route optimization of an unmanned aerial vehicle relay system includes the following steps:

[0107] Step S1: Set the initial UAV flight trajectory Q l , let the initial objective function value Cycle times l=0, error threshold ε=10 -3 , the bandwidth is A, the transmit power is P, and the given bandwidth and transmit power are allocated as {A,P};

[0108] Step S2: Establish a model of the UAV relay system, use the given bandwidth and transmit power to allocate {A,P} and the initial UAV flight trajectory Q l Solve to get the optimal solution of UAV flight trajectory bandwidth and transmission power distribution {A l+1 ,P l +1};

[0109] Step S3: Use the given bandwidth and transmit power to allocate {A, P} to the UAV flight trajectory Q l Optimize and solve to get the optimal solution Q of UAV flight trajectory l+1 and get the objective function value

[0110] Step S4: make l=l+1; and ju...

Embodiment 2

[0198] Such as figure 2 As shown, in this embodiment, by jointly optimizing the power, bandwidth and trajectory respectively; given the flight trajectory of the UAV, optimize the power and bandwidth; In the three cases, the trend graph of the information throughput changing with the flight time in the three cases is obtained, and the average average transmit power p=10dBm.

[0199] Depend on figure 2 It can be seen that the optimization strategy of jointly optimizing power, bandwidth and trajectory proposed in this paper has obvious performance gain.

[0200] The same or similar reference numerals correspond to the same or similar components;

[0201] The terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be interpreted as limitations on this patent;

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Abstract

The present invention relates to the field of communications, and more specifically, to a resource allocation and flight route optimization method for a UAV relay system. Optimize the transmission power of the source / UAV and the flight trajectory and bandwidth allocation of the UAV to maximize the weighted sum of user rates, and adjust the weight of users according to the QoS requirements of different users, and allocate more to users with greater needs Bandwidth resource, which ultimately maximizes the weighted sum of all user rates, has a wide range of applications.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a method for resource allocation and flight route optimization of an unmanned aerial vehicle relay system. Background technique [0002] In recent years, due to its characteristics such as low cost, high mobility, and on-demand deployment, UAVs have been widely used in public safety, disaster management, surveillance, and secure communication. Compared with the traditional static relay, the UAV can adaptively adjust the flight path to obtain better channel conditions between itself and the target node. Using its freedom of movement, the UAV can significantly improve the communication end-to-end Throughput can also improve communication coverage and channel capacity. However, in the current prior art, drones cannot adjust user weights according to different QoS requirements of different users, and cannot maximize the weighted sum of all user rates. [0003] References "...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W16/22H04W52/24H04W52/26H04W52/36H04W72/08H04W72/54
CPCH04B7/18504H04W16/22H04W52/242H04W52/265H04W52/267H04W52/367H04W72/543
Inventor 张广驰刘天雨崔苗林凡
Owner GUANGDONG UNIV OF TECH