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
CN106789322AActive Publication Date: 2017-05-31TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2017-05-31

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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.
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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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