Random sampling learning type caching method for physical layer security

A physical layer security, random sampling technology, applied in secure communication devices and key distribution, can solve the problem of the impact of cache on the security of the relay network, but there is little research, to reduce the average security interruption probability, optimize cache placement, The effect of improving transmission performance

Active Publication Date: 2020-04-24
GUANGZHOU UNIVERSITY
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  • Description
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Problems solved by technology

However, while the impact of caching on relay performance has been well studied by the aforementioned works, little research has been done on the impact of caching on the security of relay networks

Method used

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  • Random sampling learning type caching method for physical layer security
  • Random sampling learning type caching method for physical layer security
  • Random sampling learning type caching method for physical layer security

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] figure 1 It is a flowchart of a physical layer security-oriented random sampling learning caching method provided by an embodiment of the present invention, and the method includes:

[0042] S101. Determine the file transmission method according to the location of the file cache, the file transmission method includes a first transmission method and a second transmission method, the first transmission method includes sending the file to the destination node, ...

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Abstract

The invention discloses a random sampling learning type caching method for physical layer security, and the method comprises the following steps: determining a file transmission mode according to a file caching position, wherein the first transmission mode comprises a mode of sending a file to a destination node, and the second transmission mode comprises a mode of forwarding the file from a source node to the destination node through a relay node; if a file is cached in the relay node, adopting a first transmission mode, otherwise, adopting a second transmission mode; obtaining main channel average gains of the two transmission modes respectively, determining the optimal channel quality relay node, and obtaining a closed function and a progressive function of the average security interruption probability of the file according to file popularity distribution; taking the system security interruption probability as an optimization index, and obtaining an optimal strategy of cache placement between the relay nodes, the system security interruption index being the sum of the security interruption probabilities of the files. According to the invention, the network average security interruption probability can be reduced, and the transmission performance is improved.

Description

technical field [0001] The invention relates to the field of time communication, in particular to a random sampling learning cache method oriented to physical layer security. Background technique [0002] Due to the nature of broadcasting, wireless transmissions can be eavesdropped by unintended receivers, which poses a serious information leakage problem. Therefore, the protection of wireless networks from the physical layer to the application layer is very important. Compared with complex encryption and decryption algorithms, the complexity of physical layer security (PLS) is low and easy to implement. Therefore, it can be a great addition to application layer security. PLS goes back to Shannon's work, and the classic wiretapping model proposed by Wyner in . Based on this model, the researchers studied the security of wireless networks from the perspectives of confidentiality data rate and confidentiality outage probability. [0003] In recent years, wireless caching h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L29/08
CPCH04L9/0869H04L67/06H04L67/568
Inventor 夏隽娟范立生陈庆春徐艳吴会军
Owner GUANGZHOU UNIVERSITY
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