Chance relay-selection method for cooperative communication network under tapping environment

A cooperative communication and network technology, applied in the field of communication, can solve the problems of inability to guarantee the security and privacy of information transmission, and achieve the effect of good security interruption probability performance, easy implementation, simple relay selection and power allocation method

Inactive Publication Date: 2015-01-28
XIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

The relay selection method of the traditional collaborative communication network only selects the best relay for information forwarding based on the channel condition...

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  • Chance relay-selection method for cooperative communication network under tapping environment
  • Chance relay-selection method for cooperative communication network under tapping environment
  • Chance relay-selection method for cooperative communication network under tapping environment

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The opportunistic relay selection method of the cooperative communication network under the eavesdropping environment of the present invention, firstly, establish as figure 1 The wireless cooperative communication network with eavesdropping users is shown, and the wireless cooperative communication network includes a source node S, a destination node D, and M candidate relay nodes R 1 , R 2 ,...,R M , and an eavesdropping user E; all nodes have only a single antenna, and the transmission process adopts the decoding and forwarding protocol for information transmission; due to the influence of obstacles and other factors, there is no Direct communication links, information transmission must rely on the help of relay nodes; because the nodes use half-duplex communication, the relay nodes cannot receive and transmit information at the sa...

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Abstract

The invention discloses a chance relay-selection method for a cooperative communication network under tapping environment. The chance relay-selection method comprises: establishing a wireless cooperative communication network which includes a source node S, a target node D, M standby relay nodes R1, R2, ..., RM, and a tapping user E; transmitting information by a decode forwarding protocol during a transmitting process, wherein the whole transmitting process includes two phases: in the first phase, the source node S broadcasts information to the standby relay nodes, and in the second phase, the optimal relay selection and power distribution are performed, and the selected optimal relay node forwards information to the target node D. The chance relay-selection method for a cooperative communication network under the tapping environment is simple in relay selection and power distribution methods and easy to implement, comprehensively considers channel status information of legal users and the tapping user, can obtain better safe outage probability performance, and is relatively high in practical value.

Description

technical field [0001] The invention belongs to the communication field, and relates to an opportunistic relay selection method, in particular to an opportunistic relay selection method for a collaborative communication network under an eavesdropping environment. Background technique [0002] With the wide application of wireless communication technology in various fields, the security and privacy of wireless transmission have been paid more and more attention. The broadcast characteristics of wireless transmission determine that its data exchange is extremely vulnerable to eavesdropping and attacks by illegal users. Therefore, how to ensure the security and privacy of data transmission has become a very important research topic in the field of wireless communication. That is to say, in the process of data transmission, we should not only ensure that legitimate users can receive information correctly, but also ensure that eavesdropping users cannot correctly decode the tran...

Claims

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Application Information

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IPC IPC(8): H04W40/22H04W52/46
CPCH04W40/22H04W52/24H04W52/245H04W52/30H04W52/46Y02D30/70
Inventor 惠鏸吴亚丽李维勤
Owner XIAN UNIV OF TECH
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