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Cooperative network security transmission method

A technology of secure transmission and collaborative network, which is applied in the field of secure transmission of collaborative network based on branch handover and resident merge technology, can solve the problems affecting the stable transmission of system data and heavy system burden, so as to improve security, reduce implementation complexity, Conducive to the effect of stable transmission

Inactive Publication Date: 2013-09-04
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the optimal branch selection technology needs to estimate the channel parameters of the two branches in each transmission frame, which brings a heavy burden to the system.
In addition, the optimal branch selection frequently switches between the two branches, seriously affecting the stable transmission of system data

Method used

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  • Cooperative network security transmission method
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  • Cooperative network security transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, this embodiment records a collaborative network security transmission method, and the method includes the following steps:

[0034] S1: If the previous frame uses a direct link for data communication, go to step S2; if the previous frame uses a relay link, go to step S3;

[0035] S2: Estimate the channel parameters of the direct link in the current frame, and judge whether the direct link can provide secure communication. If yes, the branch of the direct link resides and enters step S4; otherwise, perform branch switching to estimate the channel parameters of the current frame relay link. Channel parameters, enter step S4;

[0036] S3: Estimate the channel parameters of the current frame relay link, and judge whether the relay link can provide secure communication. If so, the relay link branch resides and enters step S4; otherwise, branch switching is performed to estimate the direct link of the current frame channel parameter of the road, e...

Embodiment 2

[0048] In the collaborative network security transmission method described in this embodiment, under the Matlab simulation environment, a Monte Carlo computer is used to simulate the security interruption probability of the method proposed in the present invention. In the simulation experiment, the link between the system nodes obeys Rayleigh fading, the average strength of the direct link is 0.5, and the average strength of the two-hop relay link is 1, the link between the source node and the relay node and the eavesdropping node The average intensity is all 0.1. The additive Gaussian white noise at each node of the system has a mean of zero and a variance of 1. The safe data transfer rate of the system is R S is 0.1bps, the threshold T of branch switching is The sending power at the source node is P, and the sending power at the relay node is P R . Considering the randomness of the channel and noise, run 10 independently 9 cycle and average the results.

[0049] For e...

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Abstract

The invention discloses a cooperative network security transmission method, which comprises the following steps: 1, if a previous frame uses a direct link for data communication, entering a step 2, and if the previous frame uses a relay link, entering a step 3; 2, estimating a channel parameter of a direct link of the current frame, judging whether the direct link can provide secure communication, if so, keeping the direct link branch and entering a step 4, otherwise, performing branch switching, estimating a channel parameter of a relay link of the current frame and entering the step 4; 3, estimating the channel parameter of the relay link of the current frame, judging whether the relay link can provide secure communication, if so, keeping the relay link branch and entering the step 4, otherwise, performing branch switching, estimating the channel parameter of the direct link of the current frame and entering the step 4; and 4, transmitting data to a target node by a source node through the selected branch until the data transmission is finished. By the cooperative network security transmission method, reliable and secure data transmission can be provided and the complexity for implementing a system is reduced.

Description

technical field [0001] The invention relates to the technical field of cooperative wireless communication, in particular to a method for secure transmission of a cooperative network based on branch switching and resident combining technology. Background technique [0002] In recent years, cooperative relay technology has received extensive attention and attention. The application of cooperative relay technology in the field of wireless communication can not only improve the reliability of communication, but also effectively use spectrum resources, save signal transmission power, and facilitate the planning of communication systems. In view of the above advantages, cooperative relay technology has been adopted by standards such as IEEE802.11s-WLAN, 802.16j-WMAN, and 802.20-MBWA, and has broad engineering application prospects. However, when the eavesdropping node appears in the collaborative network, the eavesdropping node can also listen to the signal sent by the source nod...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04W36/00
Inventor 范立生周雯李旭涛
Owner SHANTOU UNIV
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