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Design method of intelligent reflecting surface assisted high-energy-efficiency unmanned aerial vehicle communication system

A design method and technology of communication system, applied in wireless communication, advanced technology, energy consumption reduction and other directions, can solve the problem of energy efficiency of UAV air-ground wireless network and other issues

Active Publication Date: 2021-11-12
西安桓煜数字科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of energy efficiency of the UAV air-ground wireless network assisted by intelligent reflectors

Method used

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  • Design method of intelligent reflecting surface assisted high-energy-efficiency unmanned aerial vehicle communication system
  • Design method of intelligent reflecting surface assisted high-energy-efficiency unmanned aerial vehicle communication system
  • Design method of intelligent reflecting surface assisted high-energy-efficiency unmanned aerial vehicle communication system

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Embodiment Construction

[0095] In order to better understand the above technical solutions, a specific analysis is given below in conjunction with the accompanying drawings and specific implementation manners.

[0096] A design method for an intelligent reflector-assisted high-efficiency unmanned aerial vehicle communication system, comprising the following steps:

[0097] In the first step, make the following specific settings:

[0098] (1) The horizontal coordinates of base station and ground user are respectively q B = [0,0] and q G =[0,400]m, the height of the base station is 20m, the flying height of the UAV is 120m, and the horizontal coordinates of the initial point and the final point are q 0 =[-200,0]m and q F =[200,400]m. Channel bandwidth W=1MHz, transmission power of base station P=20dBm, path loss index κ=4 from base station to user, channel gain at reference point ρ=-30dB, noise power σ 2 =-110dBm.

[0099] (2) Other parameters related to UAV flight are set to flight time slot δt ...

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Abstract

The invention provides a design method of an intelligent reflecting surface assisted high-energy-efficiency unmanned aerial vehicle communication system, and belongs to the field of energy efficiency optimization of an unmanned aerial vehicle communication network. The communication process comprises two parts of transmission links, one part is an information source which is directly sent to an information sink, the other part is reflected and transmitted through an intelligent reflecting surface attached to the unmanned aerial vehicle, and the two parts exist at the same time. On the basis of the thought of block iteration, an original problem is decomposed into three sub-problems to be solved, and a non-convex optimization problem is converted into a solvable concave-convex score planning problem by using a continuous convex approximation technology. The invention provides a design method for jointly optimizing passive beamforming of an intelligent reflecting surface, active beamforming of a base station and a flight path of an unmanned aerial vehicle. According to the method, an optimal network design can be generated according to model parameters so as to maximize system energy efficiency.

Description

technical field [0001] The invention belongs to the field of energy efficiency optimization of unmanned aerial vehicle communication network, and relates to a design scheme for combining an unmanned aerial vehicle and an intelligent reflective surface to realize high-energy-efficiency communication. The beamforming of the antenna at the transmitting end, the phase shift matrix of the smart reflector and the method of the flight trajectory of the drone, so as to maximize the energy efficiency of the system. Background technique [0002] With the deployment of the fifth-generation mobile communication network and the development of intelligent mobile terminals, people's demand for improving wireless communication performance is becoming more and more urgent. However, the existing ground communication cannot meet the coverage of the whole area or provide reliable transmission in some scenarios, and people begin to use Unmanned Aerial Vehicle (UAV) to construct new communication...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W16/22H04W24/02
CPCH04W16/18H04W16/22H04W24/02Y02D30/70H04W16/26H04W16/28H04B7/18504H04B7/0617H04B7/145
Inventor 苏宇华赵楠逄小玮蒋旭邹德岳
Owner 西安桓煜数字科技有限公司
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