Space information network service system structure

Abstract

The invention provides a space information network service system structure, and aims at providing a service system structure which is clear in work division, good in comprehensiveness and high in transmission efficiency. The space information network service system structure is achieved through the following technical scheme that a backbone link and an access link achieve heterogeneous network protocol conversion by adopting BP transmission, routing and gateway protocols of a delay tolerant network (DTN)-based layered protocol system to build a space information network protocol system; traffic control is conducted by means of a base pointer, an instruction pointer (IP) and multiple virtual channel layers according to the node types and the link types, a space information network functionmodel is built from two dimensions of service-oriented functions and system-oriented functions, and a backbone network comprehensively controls space resources of the network, senses and transmits the states of the space resources, processes and allocates command control information of the space resources and assists in transmitting, processing and allocating information of sea-land-air user terminals; and an access network achieves random access and information transmission of various user terminals or function subnetwork gateways.

Description

technical field [0001] The invention relates to the field of space network communication for earth observation, satellite navigation, and deep space exploration. It can provide a unified platform for the acquisition, storage and distribution of space information, and can realize the unified management, efficient sharing and comprehensive utilization of space information network. Spatial information network service architecture of large space-time span network architecture. Background technique [0002] The space information network can acquire, transmit and process massive amounts of information generated by space platforms deployed in different space locations and performing different tasks in real time, such as various satellites, near-space vehicles, aircraft, etc., and corresponding ground facilities. The ability of data transmission can effectively realize the connection of land, sea, air, space, and ground multi-dimensional information systems. The space information t...

AI Technical Summary

Problems solved by technology

[0006] First of all, the single-layer network system is composed of dozens to hundreds of low-orbit satellites with multiple functions. It has the disadvantages of complex on-board processing equipment, a large number of satellite nodes, fast dynamic changes in the network topology of low-orbit satellites, and high construction costs. , a certain number of satellites need to be deployed in the early stage to meet the coverage requirements of the initial national territory and surrounding key areas

Each satellite has the functions of remote sensing, communication, navigation and reconnaissance, etc., and the requirements for on-board processing capacity are relatively high, and the single-layer network system cannot highlight the importance of information

Unable to meet the needs of global real-time information services

[0007] Secondly, in the architecture of the backbone network + access network in the two-tier network system, the access network and the various existing satellite systems cannot be distinguished and positioned, the system hierarchy is not clear, and there are gaps between the backbone network and the existing satellite systems. As a result, the protocol design of the space network system is complicated, the function realization method of the system is not clear, and there are logical defects in adapting to the service requirements of the space information network

Images