Information sharing method and device in space information network

Abstract

The invention provides a method and a device for information sharing in a spatial information network. The method comprises the following steps that a current satellite obtains a current credit value of a target satellite; the current satellite judges whether the target satellite is reliable based on the credit value of the current satellite and the current credit value of the target satellite; if the target satellite is judged to be reliable, the current satellite carries out sharing negotiation with the target satellite; when a received sharing negotiation result which is fed back by the target satellite is to carry out sharing, the current satellite carries out physical layer information sharing with the target satellite; and after the current satellite carries out information sharing with the target satellite, the credit value of the current satellite is updated. According to the method, the propagation of the false physical layer information in a spatial network can be effectively prevented, the influence of the false physical layer information on the network is reduced, and a technical problem of larger probability of the false information which is provided when the information between the satellites is shared in the existing spatial network is alleviated.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to an information sharing method and device in a space information network. Background technique [0002] With the increase of satellite business, the traditional single-satellite transmission mode can no longer meet the requirements. In order to improve the transmission efficiency of satellites, it is necessary to communicate between satellites and satellites, and to communicate between satellites and ground stations. The traditional ground network for high-speed moving satellites is no longer applicable. With the development of satellite technology and the increase in the number of satellites, new requirements are put forward for satellite networking technology. Information sharing in satellite space network is a part of satellite networking technology. In the space network, the link information and channel conditions between satellites (such as relay satellites) ...

AI Technical Summary

Problems solved by technology

However, once malicious nodes (that is, satellites) appear to obtain additional bandwidth or reduce delay, they will generate false channel or link information. In the existing space network, the probability of satellites providing false information is relatively high

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