Method for positioning pseudo AP based on sensor data and signal difference value fusion

Abstract

The invention discloses a method for positioning a pseudo AP based on sensor data and signal difference value fusion. Apollonius circles are established through utilization of difference values of signals at different locations, and when it is discovered that the pseudo AP exists under the indoor condition, the pseudo AP is positioned precisely. According to the method, the problem that in the prior art, a transmitting power and a path loss parameter need to be known in advance when positioning is carried out through a path loss model is solved; the problem that the signals are influenced by an environment when the positioning is carried out through utilization of the received signal strength is solved; and the error accumulation problem of a PDR algorithm is solved. According to the method, the parameter of the loss model does not need to be known in advance, the transmitting power parameter can be eliminated and the current path loss parameter is calculated in real time in a detection process, so the positioning precision can be effectively improved; and the positioning is carried out by taking a ratio of the distance from different points to the pseudo AP as input, rather than directly calculating the distance.

Description

technical field [0001] The invention relates to the field of wireless network security, in particular to a method for locating a false AP based on sensor data and signal difference fusion. Background technique [0002] With the large-scale deployment of urban wireless local area networks, wireless local area network security has become particularly prominent and important, among which fake AP phishing attacks are one of the serious security threats in wireless networks. Restricted by various objective factors, many data are transmitted in clear text when transmitted on the WiFi network, such as general web pages, pictures, etc.; even when logging in to many websites or mail systems on the mobile phone, the account number and password are also transmitted in clear text Or just plain encrypted transmission. Therefore, in this case, once the network connected to the mobile phone is a fake AP set up by the attacker, various information transmitted through the fake AP, including...

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Problems solved by technology

[0008] In view of the above-mentioned problems or defects in the prior art, the purpose of the present invention is to provide a method for locating a false AP based on sensor data and signal difference fusion, which solves the need to know the transmit power in advance for path loss model positioning in the prior art. and path loss parameters, it solves the problem of the influence of the environment on the signal when using the strength of the received signal for positioning, and solves the problem of error accumulation in the PDR algorithm. Precise Positioning of False APs

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