A method of unmanned aerial vehicle-to-ground safe transmission power distribution

A technology for safe transmission and UAV, applied in the field of UAV-to-ground safe transmission power distribution, which can solve the problems of high eavesdropping risk and increased eavesdropping rate.

Active Publication Date: 2020-09-25
湖南红船科技有限公司
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Problems solved by technology

This makes the eavesdropping rate increase sharply when the channel condition of the security user is very poor (the farthest position among all legitimate users), resulting in a high risk of eavesdropping

Method used

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  • A method of unmanned aerial vehicle-to-ground safe transmission power distribution
  • A method of unmanned aerial vehicle-to-ground safe transmission power distribution
  • A method of unmanned aerial vehicle-to-ground safe transmission power distribution

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example 1

[0046] In a non-orthogonal multiple access UAV network with K=4 users, one security user and one eavesdropper, the network side length of the square area is 560m. The UAV flies around the center of the network in a circular trajectory with a radius of 200m, and its flight height is 80m. In addition, we assume that the channel between the UAV and the communication user obeys Rician fading, where the Rician channel power reference gain is ρ 0 =-30dBm, Rice parameter K 0 =5, Gaussian additive noise distribution variance is σ 2 =10 -23 mW.

[0047] first, figure 2 , image 3 , Figure 4 The power allocation scheme in the present invention is compared with the UAV communication network deploying traditional non-orthogonal multiple access in terms of the transmission rate of the security user, the eavesdropping rate and the transmission rate of other users. In the communication process, the transmission rate threshold of ordinary users is r=3.5bit / s / Hz, and the total power thr...

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Abstract

A UAV-to-ground safe transmission power distribution method, the method is to dynamically divide the circular flight trajectory of the UAV into several time slots during the flight process, and in each time slot, regardless of the location of the safe user The lowest transmission power is assigned to both near and far; for other users, the power is allocated according to the distance of their location. In this way, it is ensured that the security user is not eavesdropped, and at the same time, the transmission rate of other users is maximized. In addition, this patent also provides the upper limit of the transmission rate threshold of security users at various relative distance positions, and the linear relationship between the transmission rate of ordinary users and the transmission rate threshold of security users.

Description

technical field [0001] The invention belongs to the technical field of UAV multi-user wireless communication network security, and relates to a user power allocation strategy for UAVs with circular trajectories to ensure the information security of safe users, and specifically refers to a UAV-to-ground safe transmission power Allocation method. Background technique [0002] Due to its advantages of high mobility, convenient deployment and low cost, UAV has become a research focus of cutting-edge communications. In addition, the shortage of channel resources is an increasingly prominent contradiction in the communication industry. With the explosive growth of information in modern society, the exponential increase of mobile terminals and data transmission traffic, the resources of transmission frequency bands are becoming more and more precious. This is also a bottleneck problem that hinders the current and future communication industry from hindering user growth and informa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/40H04W28/22H04W72/04
CPCH04W72/0473H04W4/025H04W4/40H04W28/22H04W72/51
Inventor 陈新颖赵楠邹德岳刘鑫陈炳才
Owner 湖南红船科技有限公司
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