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Feature Selection Method for Wireless Protocol Frames Based on Improved Mutual Information

A feature selection method and wireless protocol technology, applied in wireless network protocols, wireless communications, instruments, etc., can solve the problems of easy accumulation, poor recognition effect, and difficulty in capturing wireless network application layer data, and achieve the effect of recognition.

Active Publication Date: 2021-08-03
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It is difficult to capture wireless network application layer data, while existing wireless protocol identification stays at the signal level, signal parameter errors are easy to accumulate, and the identification effect is poor

Method used

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  • Feature Selection Method for Wireless Protocol Frames Based on Improved Mutual Information
  • Feature Selection Method for Wireless Protocol Frames Based on Improved Mutual Information
  • Feature Selection Method for Wireless Protocol Frames Based on Improved Mutual Information

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Before detailing the feature selection method of wireless protocol frames based on improved mutual information, the recognition framework applied by this algorithm is firstly introduced.

[0022] The unknown protocol recognition framework based on the wireless network includes five modules. The data cutting module identifies the synchronization code by analyzing the position of the synchronization code in the protocol data, and cuts the bit stream data according to the synchronization code to obtain the frame-based data. Unknown protocol communication data. The segmented data frames are analyzed, and the positional relationship of the features is analyzed by association rules, spliced, and feature selected, and finally the original features...

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Abstract

The invention discloses a wireless protocol frame feature selection method based on improved mutual information, comprising the following steps: S1: initializing all the features contained in the original set, and the target set is an empty set; S2: calculating the correlation degree of the features in the original set, and The feature with the largest correlation is added to the target set, and the feature is removed from the original set; S3: calculate the formula value after the normalization of the remaining features, and select the feature with the largest formula value; S4: judge whether the formula value meets the standard, reach The criterion is to move the feature from the original set to the target set, return to S3, otherwise go to S5; S5: output the target set. This application uses the mutual information correlation theory in information theory, and considers the correlation and redundancy of features according to the idea of ​​normalization to perform feature selection. The main purpose is to further screen and verify the initially extracted features to improve the accuracy of the feature set.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular, it can be applied to the feature selection method of the data link layer in the field of wireless communication. Background technique [0002] Since the 21st century, computer network technology has developed rapidly, devices connected to the Internet have become diversified, and the scale of network applications has shown explosive growth. As a very important network access method in contemporary society, wireless network has been widely used in contemporary society due to its advantages of mobility and flexibility. In today's highly informatized world, it is becoming more and more important to ensure the security of wireless network transmission. Traditional network security technology research focuses on the application layer, and technologies such as firewalls, virus protection, and intrusion detection have been developed quite proficiently. However, there is no good sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62H04W80/12
CPCH04W80/12G06F18/21G06F18/22
Inventor 刘治国张江梅任长庆
Owner DALIAN UNIV