Physical layer secure transmission method in unmanned aerial vehicle assisted cognitive wireless network

A technology of cognitive wireless network and physical layer security, which is applied in the field of physical layer security transmission in UAV-assisted cognitive wireless network, and can solve problems such as less consideration of the impact of security transmission performance

Active Publication Date: 2021-03-26
BEIJING UNIV OF POSTS & TELECOMM
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the existing technologies provide various solutions for the secure transmission of cognitive wireless networks, there are still the following problems: On the one hand, there are few studies on the use of UAVs to transmit artificial noise to ensure the secure transmission of the phys

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Physical layer secure transmission method in unmanned aerial vehicle assisted cognitive wireless network
  • Physical layer secure transmission method in unmanned aerial vehicle assisted cognitive wireless network
  • Physical layer secure transmission method in unmanned aerial vehicle assisted cognitive wireless network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0214]In the simulation scene setting, the circular radius r composed of PR, SR and EVE is 200m, and the length of a slot is fixed to 2s, and the flight height of the drone is fixed to 150 m; Table 1 provides the remaining parameters.

[0215]The simulation results compare the algorithms taken by the present invention with two existing algorithms: The first solution is that the drone is only one secondary user in the cognitive wireless network, and dynamically access the main user channel by spectrum perception. Do not transmit artificial noise. The second solution is that the drone acts as a user without spectral perception, while transmitting the secondary signal and artificial noise, communicating with the ground node.

[0216]Table 1

[0217]

[0218]The relationship between the total secure transmission rate and the spectrum perception time τ, such asFigure 5 As shown, the safety transmission rate of the system has decreased after the change in the spectral perceived time. When the spectru...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a physical layer secure transmission method based on an unmanned aerial vehicle assisted cognitive wireless network, and belongs to the field of wireless communication. The method specifically comprises the following steps: establishing a wireless communication scene comprising an unmanned aerial vehicle, a primary user transmitter, a primary user receiver, a secondary userreceiver and an eavesdropper, and then, in a frequency spectrum sensing time tau of a time slot T, enabling the unmanned aerial vehicle to perform spectrum sensing, wherein the main user may perform data transmission, and calculates the safe transmission rate at the moment; meanwhile, in the data transmission time period Ta of the time slot T, enabling the unmanned aerial vehicle to judge the access state of the current main user channel based on spectrum sensing, selecting the current main user channel as a friendly interference unit or a secondary signal transmitter, and discussing a securetransmission model in four situations; based on this, formulating an optimization model of the total secure transmission rate; performing solving by using a particle swarm optimization algorithm; andenabling the unmanned aerial vehicle to perform signal physical layer safety transmission according to the obtained optimal parameters. According to the invention, the secure transmission of the primary and secondary users is considered, so that the secure transmission performance of the system is improved.

Description

Technical field[0001]The present invention belongs to the field of wireless communication, and in particular, the present invention relates to a physical layer safety transmission method based on the drone auxiliary cognitive wireless network.Background technique[0002]In recent years, the gradual application of the 5G network has driven the rapid development of the Internet of Things technology, and the terminal equipment used by people has grown a lot of trends in diversified development. However, due to the shortage of shortage of spectrum resources in the communication network, 5G and the development of the Internet of Things technologies are restricted. Therefore, it is necessary to introduce cognitive radio (CR) to improve wireless spectral utilization. Spectrum perception, spectrum sharing, and spectral switching, such as cognitive wireless networks, can effectively realize sharing and multiplexing of wireless spectrum resources, thereby improving the utilization of wireless s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04W12/65H04B17/382
CPCH04B17/382Y02T10/40
Inventor 李曦何旭峰纪红张鹤立
Owner BEIJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap