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Method and device for determining key node in space information network

A technology of spatial information network and network node, applied in data exchange network, radio transmission system, digital transmission system and other directions, can solve the problem of unable to realize quantitative analysis of network key nodes, and achieve the effect of accurate determination

Active Publication Date: 2017-05-31
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for determining key nodes in a spatial information network, so as to alleviate the technical problem that the quantitative analysis of key nodes in the network cannot be realized in the prior art

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  • Method and device for determining key node in space information network
  • Method and device for determining key node in space information network
  • Method and device for determining key node in space information network

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Embodiment 1

[0025] According to an embodiment of the present invention, an embodiment of a method for determining a key node in a spatial information network is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0026] figure 1 is a flow chart of a method for determining key nodes in a spatial information network according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0027] Step S102, calculating the effective betweenness of network nodes in the space network, wherein the effective betweenness represents the number of paths passing through the network node, and the number of network nodes is at least one.

[00...

Embodiment 2

[0082] The embodiment of the present invention also provides a device for determining a key node in a spatial information network, the device for determining a key node in a spatial information network is mainly used to perform the determination of a key node in a spatial information network provided by the above content of the embodiment of the present invention method, the device for determining key nodes in a spatial information network provided by an embodiment of the present invention will be specifically introduced below.

[0083] Figure 4 is a schematic diagram of a device for determining key nodes in a spatial information network according to an embodiment of the present invention, such as Figure 4 As shown, the device for determining key nodes in the spatial information network mainly includes a calculation unit 41, an acquisition unit 42, a first determination unit 43, a second determination unit 44 and a third determination unit 45, wherein:

[0084] The calculat...

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Abstract

The invention provides a method and device for determining a key node in a space information network, and relates to the technical field of satellite communication. The method comprises the steps of calculating an efficient berweenness of at least one network node in a space network, wherein the efficient berweenness represents the quantity of paths passing through the network node; obtaining usability value of the network node, wherein the usability value represents the effective probability of the network node; determining an expected berweenness of the network node according to the usability value and the effective berweenness; determining a network transmission capacity model of the network node according to the expected berweenness; and determining the network key node in the network node according to the network transmission capacity model, so that the technical problem that quantitative analysis of the network key node cannot be achieved in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method and device for determining key nodes in a space information network. Background technique [0002] Due to the inherent open space environment of the space information network, satellite payloads and equipment are naturally exposed, which may cause network nodes to face interference from space radiation, illegal interception and interference of signals, destruction or blinding of kinetic energy weapons and laser weapons, impact of space debris, Threats such as cyber attacks. When the spatial information network system is damaged or attacked by intrusion, its distributed and highly dynamic characteristics will greatly affect its basic communication capabilities. Therefore, it is necessary to design a space information network security defense strategy that has flexibility, security, self-healing capabilities, and smooth communication in an intrusion attack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04B7/185
Inventor 任勇张泽琦姜春晓王景璟郭强王新
Owner TSINGHUA UNIV
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