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Quick and slow link adaptive fusion based relay selection method

An adaptive, fast link technology, applied in electrical components, wireless communication, etc., can solve the problem of not considering fast and slow link adaptive technology, and achieve the effect of reasonable relay selection

Inactive Publication Date: 2015-06-10
GUANGXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Both fast and slow link adaptation methods can be used in secure cooperative networks and ordinary cooperative networks, but the influence of fast and slow link adaptive technologies is not considered in the relay selection of the two networks at present

Method used

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  • Quick and slow link adaptive fusion based relay selection method
  • Quick and slow link adaptive fusion based relay selection method
  • Quick and slow link adaptive fusion based relay selection method

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Embodiment Construction

[0025] Each link adopts a fast or slow adaptive transmission mode, the fast link adaptively determines the modulation mode according to the instant signal-to-noise ratio, and the slow link adaptively determines the modulation mode according to the average signal-to-noise ratio. Select to use the fast or slow link adaptation technology according to judging whether the channel changes frequently. In view of the close relationship between the moving speed and the channel change frequency, when the moving speed of the destination node is υ D ≤υ 0 When υ 0 D ≤υ 1 When , it is judged that the channel status of this link is an ordinary change, and in the security cooperative network, the corresponding link adaptation method is selected to maximize the channel secrecy capacity under the premise of only changing the link adaptation method, and in the ordinary cooperative network, only the change Under the premise of the link adaptive method, the corresponding link adaptive method is...

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Abstract

The invention discloses a quick and slow link adaptive fusion based relay selection method. The method comprises safe decoding-and-forwarding collaborative network relay selection and ordinary collaborative network relay selection. The method is characterized in that a channel state change frequency division method is put forward, a quick or slow link adaptive mode is selected according to the method, and accordingly, the system performance is improved, and the system complexity is reduced; (2) considering that reality system users link adaptive transmission generally, the method can be applied to reality systems and has realistic feasibility; (3) the secrecy capacity and whether the switching frequency between interference nodes is used are considered in security collaboration network relay selection, the relay selection is reasonable and meaningful by establishing relay selection in ordinary collaborative network on the basis of determining towards actual channels.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a relay selection method based on adaptive fusion of fast and slow links. Background technique [0002] In a secure collaborative network, due to the nature of the broadcast wireless medium, all users within the coverage area of ​​the system can eavesdrop on the source information. The performance of confidentiality of information in communication and the protection of communication links from eavesdropping by would-be eavesdroppers are becoming more and more important. Information privacy in traditional wireless networks is the domain of higher layer protocol stacks, using cryptographic security schemes. However, the information security achieved at the high level faces the challenge of increasing potential hidden dangers. Therefore, in order to further improve the security performance of the mobile communication system, people begin to pay attention to the inform...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22
CPCH04W40/22
Inventor 谭琛肖琨
Owner GUANGXI NORMAL UNIV
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