4G and 5G air interface attack detection method based on signal and signaling fingerprint

An attack detection and fingerprinting technology, applied in the field of network security, can solve problems such as high hardware requirements, difficult daily implementation and deployment, and affecting normal communication of users, and achieve the effect of simple deployment, low cost, and easy deployment

Active Publication Date: 2021-09-03
INST OF INFORMATION ENG CAS
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Problems solved by technology

Due to the openness of 4G and 5G air interfaces, it is easy to implement signal interference attacks against air interfaces (such as fake base station attacks and jammer attacks).
[0003] In order to prevent air interface attacks (such as fake base stations and jammers that prevent users from using mobile communication networks) from affecting users' normal communication, a lar

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  • 4G and 5G air interface attack detection method based on signal and signaling fingerprint
  • 4G and 5G air interface attack detection method based on signal and signaling fingerprint

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[0019] A preferred example of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] The attack detection process of the present invention is figure 1 As shown, it includes.

[0021] 1. Signal and signaling fingerprint collection stages such as figure 2 Indicated.

[0022] 1) Search for the EARFCN, PCI; EARFCN (E-UTRA ABSOLUTE RADIOFREQUENCY CHANNEL NUMBER) in each protected area is the frequency range where the LTE system is located; the Physical Cell Identifier is a physical cell identity. , The only two parameters of PCI and EARFCN are unique to determine a frequency point.

[0023] 2) In a certain protected area, the PCI initiated a specific number of authentication requests within a fixed time interval. Obtain authentication signals and signal strength parameters (such as RSRP, RSRQ, RSSI) during the fixed time interval. , RINR, etc.) This cycle steps 1 and 2. Each time the authentication signal is reserved, through these...

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Abstract

The invention discloses a 4G and 5G air interface attack detection method based on signal and signaling fingerprints. The method comprises the following steps: 1) a signal and signaling fingerprint acquisition stage: searching EARFCN and PCI in each target protection area; for each group of searched EARFCN and PCI, generating a signaling fingerprint and a signal fingerprint corresponding to the group of EARFCN and PCI information; 2) an attack detection stage: searching EARFCN and PCI in a target protection area; for each group of searched EARFCN, the PCI obtains a corresponding signaling fingerprint and a corresponding signal fingerprint; Comparing the fingerprint with the corresponding signaling fingerprint and the signal fingerprint acquired in the step 1); and determining whether the air interface attack exists according to the comparison result. Signal attack detection of a certain area can be achieved only by installing drive test software on the terminal, and the air interface attack detection method is simple and easy to deploy.

Description

technical field [0001] The invention mainly relates to the field of network security, in particular to a 4G / 5G air interface attack detection method based on signal and signaling fingerprints. Background technique [0002] With the popularization of 4G and 5G mobile communication networks, whether mobile communication functions can be used normally has become a key factor affecting people's quality of life. Due to the openness of 4G and 5G air interfaces, signal interference attacks on air interfaces are easy to implement (such as fake base station attacks, jammer attacks), etc. Once implemented successfully, it will affect the normal communication of users, resulting in affecting the normal communication of users. [0003] In order to prevent air interface attacks (such as fake base stations and jammers that prevent users from using mobile communication networks) from affecting users' normal communication, a large number of solutions have been proposed, such as using fake b...

Claims

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Application Information

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IPC IPC(8): H04W12/121H04W12/122
CPCH04W12/121H04W12/122
Inventor 马璐萍范伟彭诚朱大立李雅
Owner INST OF INFORMATION ENG CAS
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