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Method, system and device for detecting wiretapping pilot signal sent by illegal user

A technology of illegal users and detection methods, applied in baseband systems, transmission systems, digital transmission systems, etc., can solve communication information security threats and other issues, achieve the effect of improving confidentiality capacity and avoiding the risk of secondary fraud

Active Publication Date: 2018-11-06
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, illegal users will still get some information. If the decryption technology is strong enough, the security of communication information will still be threatened.

Method used

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  • Method, system and device for detecting wiretapping pilot signal sent by illegal user
  • Method, system and device for detecting wiretapping pilot signal sent by illegal user

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0046] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that when an element is referred to as being "connected" or "coupled" to another el...

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Abstract

The invention discloses a method, system and device for detecting a wiretapping pilot signal sent by an illegal user. The method comprises the following steps: receiving pilot signals sent by a legaluser and an auxiliary user in a first time slot, receiving a pilot signal sent by the legal user in a second time slot, and receiving a pilot signal sent by the auxiliary user in a third time slot; respectively calculating reverse channel estimation results according to the pilot signals received in the first, the second and the third time slots; and according to the calculated reverse channel estimation results, determining a channel of the legal user and whether the illegal user sends the wiretapping pilot signal or not. The method, system and device provided by the invention has the advantages that the deceitful pilot signal and the illegal user can be detected, so that wiretapping of the illegal user can be prevented, and high information security of the legal user can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a detection method, system and device for an illegal user transmitting an eavesdropping pilot. Background technique [0002] Traditional wireless communication security is based on cryptography, using various encryption algorithms to ensure data security. With the improvement of computing power, it is necessary to continuously increase the amount of calculation for password cracking, which causes a great burden on the system. Therefore, the concept of physical layer security is proposed. It uses the uniqueness and reciprocity of physical channels to realize information encryption, generate passwords, and identify legitimate users. It appears as a supplement to upper layer security, which can greatly enhance the security performance of the entire system. [0003] However, physical layer security is still in the initial research stage as a new communication securi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04K1/00H04K3/00
CPCH04K1/003H04K3/825H04L25/0224
Inventor 李斌刘筱明崔绍华赵成林
Owner BEIJING UNIV OF POSTS & TELECOMM
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