Active non-contact identity authentication method based on WiFi channel state information

Abstract

The invention discloses an active non-contact identity authentication method based on the WiFi channel state information. The user body type, habits and other features contained in the human body behaviors are extracted through the WiFi channel state information. The first application of the WiFi channel state information on an identity recognition direction is utilized, the features are extracted by reasonably and effectively denoising the channel state information CSI in a WiFi signal extensively utilized at this stage; the waveform data related with the actions is segmented according to the extraction result; the user behavior recognition and the user identity related information (action direction, speed, user body type and others) extraction are further performed on the segmented data; and then the feature results are used for recognizing the user identity, and meanwhile, the reality of the whole mechanism is guaranteed.

Description

technical field [0001] The invention relates to a user identity identification system based on WiFi channel state information, which is mainly used to solve the problem of identifying people by using WiFi signals to extract human body behavior characteristics in a WiFi environment. Background technique [0002] Through research in wireless perception in recent years, human activities based on wireless signals of existing commercial equipment, gesture recognition and indoor positioning have been proven to be feasible with good recognition results and accuracy. At the same time, with the popularization of Wi-Fi devices and related research progress in this field, there are new research requirements for security issues. These security issues are mainly divided into two categories: [0003] (1) New privacy protection issues arising under the technical background of wireless perception; [0004] (2) The application of wireless sensing technology in some existing security issues....

AI Technical Summary

Problems solved by technology

[0005] The first type of problem is aimed at how to hide the correct CSI information while ensuring normal data transmission through non-destructive interference to the wireless signal, so that the wireless sensing system cannot obtain the physical data in the CSI signal, so as to achieve Purpose of Privacy Protection

The focus of the second type of problem is how to apply wireless sensing technology to security issues, for example: using the CSI information of mobile devices to make wireless APs filter illegal access devices

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