A Rate Control Based Security Throughput Optimization Method for Relay System

A relay system and rate control technology, applied in relay system monitoring, transmission system, transmission monitoring, etc., can solve the problems of low transmission efficiency, optimization, and lack of transmission rate of communication nodes in the relay system

Active Publication Date: 2020-06-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing physical layer security transmission technology mainly considers how to improve the security of relay transmission, and lacks the optimization of the transmission rate of communication nodes. Therefore, when the legal channel experiences deep fading, the transmission efficiency of the relay system is low.

Method used

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  • A Rate Control Based Security Throughput Optimization Method for Relay System
  • A Rate Control Based Security Throughput Optimization Method for Relay System
  • A Rate Control Based Security Throughput Optimization Method for Relay System

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Embodiment Construction

[0036] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0037] A rate control-based security throughput optimization method for relay systems, the system structure diagram is as follows figure 1 Shown: Consider a three-node two-hop multi-antenna relay system, including a source node S, a multi-antenna relay node R, and a destination node D. After successfully receiving the source signal, the relay node stores the data in the buffer, and then judges whether to send or receive according to the state of the two-hop link. When the relay is sending and receiving at the same time, it is in full-duplex mode. When relay node R sends to node D, it receives N E monitoring of eavesdropping nodes (1 in this embodiment).

[0038] The method is based on figure 2 The given flowchart considers the relay system of a single eavesdropping node. After the relay node collects the statistical channel state information of...

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Abstract

The invention discloses a relay system safety throughput optimization method based on rate control. The method comprises the following steps: firstly, for a relay system distributed with eavesdroppingnodes, establishing a relay security transmission system framework based on buffer area characteristics of the relay nodes; establishing a rate control problem aiming at maximizing the relay securitythroughput while ensuring that the security interruption probability is lower than a certain threshold; emphatically designing an initial point selection method in the problem solving process, and finally solving the sending rate and the safety rate of the node through a convex optimization method on the basis of the obtained initial point. The method is based on the statistical channel state information, optimizes the safety throughput of the relay system through the control rate, is low in communication overhead, is suitable for an eavesdropping channel scene, and can effectively improve the efficiency of physical layer safety transmission of the relay system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to the technical field of security in wireless communication, and in particular relates to a method for optimizing the security throughput of a relay system based on rate control. Background technique [0002] Due to the open nature of wireless channels, signals sent by legitimate nodes may be monitored by eavesdroppers, which has aroused widespread concern about security issues. Because the physical layer secure transmission technology can achieve security in the sense of information theory, it has become a research hotspot in secure communication. [0003] A typical relay system can ensure effective and reliable transmission between a pair of sending and receiving nodes, but it does not take into account that the relay node may be eavesdropped by other nodes, so the security cannot be guaranteed. Therefore, it is necessary to design a reasonable relay transmission ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/02H04W28/14H04B17/391H04B17/40
CPCH04B17/3911H04B17/40H04W28/0236H04W28/0257H04W28/14
Inventor 陈惠芳谢磊赵越王匡
Owner ZHEJIANG UNIV
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