Security Enhancement Strategy Based on Hybrid Forwarding and Opportunistic Relay in Cooperative Communication System

A cooperative communication and opportunity technology, applied in transmission systems, wireless communication, radio transmission systems, etc., can solve the problem of not paying attention to the security of cooperative systems, and achieve the effect of small privacy interruption probability and significant performance difference

Active Publication Date: 2019-05-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are many literatures that consider relay nodes to participate in cooperation in the form of hybrid forwarding, they do not pay attention to the security issues in the cooperation system

Method used

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  • Security Enhancement Strategy Based on Hybrid Forwarding and Opportunistic Relay in Cooperative Communication System
  • Security Enhancement Strategy Based on Hybrid Forwarding and Opportunistic Relay in Cooperative Communication System
  • Security Enhancement Strategy Based on Hybrid Forwarding and Opportunistic Relay in Cooperative Communication System

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Embodiment

[0036] In this embodiment, the simulation area is set as a 3×3 square area. Without loss of generality, the source node S is fixed at (0,0), the destination node D is placed at the coordinates (0,3), and the eavesdropping node E is located at ( 3,0) point, K relays are distributed uniformly and randomly in a 3×3 square area. Assuming that the channel between nodes obeys block-flat Rayleigh fading, the average channel gain is determined by the distance between nodes and the path loss exponent. Because the proposed strategy focuses on the selection of the relay forwarding mode, and the selection of the relay forwarding mode is related to the location distribution of nodes, therefore, a total of 100 topologies were generated in the simulation, and Monte Carlo simulation was used. In order to verify the effectiveness of the present invention, the Monte Carlo simulation results were compared with the theoretical analysis values, and the specific results are as follows figure 2 Sh...

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Abstract

The invention provides a security enhancement strategy based on hybrid forwarding and opportunistic relaying in a cooperative communication system. All relay nodes are divided into amplify-forward (AF) relay nodes and decode-forward (DF) relay nodes based on the quality of channels between a source sending node and the relay nodes. When the relay node for cooperation is selected, one relay node capable of maximizing the instant private rate can be selected from the two types of relay nodes. The private interruption probability and the diversity order of the strategy provided by the invention are analyzed, and simulation verification is carried out on the validity of the provided strategy; a simulation result shows that in comparison with the conventional relay selection scheme in the AF or DF way, the private interruption probability of the security enhancement strategy based on hybrid forwarding and opportunistic relaying is smaller.

Description

Technical field: [0001] The invention relates to a mechanism for ensuring data transmission security in a wireless cooperative system, in particular to a security enhancement strategy based on hybrid forwarding and opportunistic relay in a cooperative communication system. Background technique: [0002] The rapid development of wireless communication technology has broken through the limitations of wired communication systems restricted by connections, making information exchange more convenient. The number of users accommodated in the wireless communication system increases rapidly, therefore, the system needs to be able to provide a higher data transmission rate. However, due to the broadcast characteristics of the wireless medium itself, compared with wired communication, data transmission in wireless communication faces severe security challenges. [0003] As one of the key technologies in 4G communication, cooperative relay has significant advantages in increasing cove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/155H04W40/12H04W40/22
CPCH04B7/15557H04W40/12H04W40/22Y02D30/70
Inventor 孙黎韩彩虹杜清河任品毅王熠晨
Owner XI AN JIAOTONG UNIV
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