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Unmanned aerial vehicle ground safety transmission power distribution method

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

Active Publication Date: 2019-11-08
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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  • Unmanned aerial vehicle ground safety transmission power distribution method
  • Unmanned aerial vehicle ground safety transmission power distribution method
  • Unmanned aerial vehicle ground safety transmission power distribution method

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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

The invention relates to an unmanned aerial vehicle ground safety transmission power distribution method, which dynamically divides a circular flight path where an unmanned aerial vehicle is located into a plurality of time slots in the flight process of the unmanned aerial vehicle, and distributes the lowest transmission power to the unmanned aerial vehicle regardless of the distance of the position of a safety user in each time slot; and correspondingly distributing power to other users according to the distances of the positions of the users. Therefore, it is ensured that the safe user is not eavesdropped, and maximization of the transmission rate of other users is achieved at the same time. In addition, the invention further provides an upper limit value of the transmission rate threshold of the safety user at various relative distance positions and a linear relation between the transmission rate of the common user and the transmission rate threshold of the safety user.

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 Applications(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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