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A wireless communication method and system based on backscatter antenna array

A backscattering and wireless communication technology, applied in the field of wireless communication, can solve the problems of low security and high hardware cost, and achieve the effects of low hardware cost, small size and strong operability

Active Publication Date: 2020-09-08
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a wireless communication method and system based on backscatter antenna array, aiming to solve the problems of high hardware cost and low security in the traditional method of preventing wireless devices from being attacked by outsiders

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  • A wireless communication method and system based on backscatter antenna array
  • A wireless communication method and system based on backscatter antenna array
  • A wireless communication method and system based on backscatter antenna array

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] refer to figure 1 , a backscatter antenna array-based wireless communication method provided by an embodiment of the present invention includes the following steps:

[0045] (1) Distribute the backscatter circuit tags around the AP, build an antenna array, and use the reflection of the tags on the wireless signal to construct the multipath propagation characteristics of the wireless signal;

[0046] Such as figure 2 As shown, when a legitimate wireless device is pairing or sharing data with a wireless access point, an active attacker equipped with an omnidirectional or directional antenna...

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Abstract

The invention discloses a wireless communication method and system based on a backscattering antenna array. By attaching a backscattering circuit label with low power consumption, small size and low price to APs to construct multipath propagation characteristics of wireless signals, extract The representative characteristics of the backscattered signal obtained by the reflection of the transmitted signal through the backscattering circuit label, and the distance search algorithm is used to compare the similarity between the representative features, and the propagation feature vector is constructed. Finally, the machine learning algorithm is used based on the propagation feature vector The similarity classifies the identity of attackers and legitimate wireless devices without using expensive antenna arrays or making any hardware modifications to existing devices. The hardware cost is low, the operability is strong, and the system's ability to identify active attackers is greatly improved. accuracy and efficiency.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically, relates to a method and system for wireless communication based on a backscattering antenna array. Background technique [0002] The Internet of things (IoT) has become the third technological innovation in the development of the world's information industry after computers and the Internet because of its powerful wireless communication capabilities and its great advantages in overcoming problems such as cost, energy consumption, and mobility. . With the continuous development of the information age, the diversification of user application requirements, and the use of massive IoT devices have greatly promoted the vigorous development of IoT technology, and also spawned a large number of IoT technologies that meet different needs. [0003] Continuous advancements in low-power wireless communication technologies and lightweight communication protocols are driving the ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/12H04B7/22G06K9/62H04W12/126
Inventor 王巍屈俊江涛骆志青
Owner HUAZHONG UNIV OF SCI & TECH
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