Method and device for detecting pilot attack, electronic equipment and storage medium

Abstract

Embodiments of the present invention provide a method and a device for detecting a pilot attack, electronic equipment and a storage medium. The method for detecting the pilot attack is applied to a legal user side and comprises the following steps of sending a first pilot signal to a transmitting end in an uplink stage of pilot training in order to make the transmitting end obtain each first peakvalue corresponding to a spatial spectrum function of each first pilot signal sent by each user side; receiving each first peak value sent by the transmitting end in a downlink stage of pilot trainingand each second pilot signal transmitted by the transmitting end and other user sides in order to obtain a spatial spectrum function of each second pilot signal about a scanning angle of the legal user side; obtaining each second peak value corresponding to the spatial spectrum function; and determining the first peak value corresponding to a minimum difference as a spatial spectrum of the legaluser side, determining the second peak value corresponding to the minimum difference as a spatial spectrum of the transmitting end, and determining the remaining peak values as the spatial spectrums of the malicious user sides respectively. According to the embodiments of the invention, a purpose of identifying the malicious user side is achieved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device, electronic equipment and storage medium for detecting pilot attack. Background technique [0002] Due to the openness of wireless transmission, other users within the effective transmission range can interfere or eavesdrop on wireless signals, so information security is an important topic in the field of wireless communication. In recent years, physical layer security has gained widespread attention. Physical layer security mainly uses the characteristics of physical layer (such as uniqueness and reciprocity of channels) to ensure the safe transmission of information. [0003] The physical layer security model proposed by Wyner is composed of a transmitter, a legal user and an eavesdropping user. Normally, before information transmission, the legal user transmits a pilot signal to the transmitter, and the transmitter estimates the channel with th...

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Problems solved by technology

[0005] However, this method of detecting pilot attacks does not take into account the fact that malicious users send pilot signals to legitimate users in the downlink phase, making the final detection of pilot attacks inaccurate.

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