Design method of flexible node model for spatial information network

Abstract

The invention provides a flexible node model of a space information network. The flexible node model of the space information network aims to provide a flexible node model that has strong expansibility, can enhance the service ability of the space system, can reduce the construction cost of the spatial information system, and has a multi-dimensional elastic node model. The invention is realized by the following technical scheme: in the model node, the functional service module is divided into a software service sub module and a hardware service sub module including a software algorithm library; the network system module adopts the physical layer, data link layer, network layer, transport layer and application layer which are five ISO protocol network configuration layers corresponding to the space physical platform, so as to use as a parent model of the virtual composition and virtual function; all nodes in the space network realizes different platforms from the spatial information network backbone nodes, indirect access nodes, direct access nodes and functional subnet nodes derived by the parent model through functional interfaces. The lexible node model of the space information network enhances the service ability of the space system through the function decoupling spatial physical platform.

Description

technical field [0001] The invention relates to a design method of a flexible node model of a space information network in the field of space information networks. Background technique [0002] The space information network is a network system that acquires, transmits and processes space information in real time using space platforms, such as geostationary satellites or medium- and low-orbit satellites, stratospheric balloons, and manned or unmanned aircraft. The complex heterogeneous network composed of networks and the development of space information network are limited by resources such as spectrum and orbit. It is difficult to expand the space-time coverage by increasing the number of space nodes and improving node capabilities. The highly dynamic movement of space nodes, the complex spatio-temporal behavior of the network, and the large difference in business types require the space network to be reconfigurable and scalable. The difficulty lies in the fact that conven...

AI Technical Summary

Problems solved by technology

There are certain defects in this design method: First, the design based on function cannot highlight the form of node network, that is to say, this node design method still starts from the perspective of traditional satellites, not from the perspective of spatial information network. Consider, showing a networked view of nodes

Secondly, this design method leads to a rigid node structure, that is, the platform and functions are tightly coupled, resulting in poor flexibility and scalability of the node form, which in turn leads to a lack of flexibility in the overall structure of the spatial information network. Difficult to maintain and manage

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