Space Environment Data Transmission System Based On BBR Congestion Control Algorithm

Space environment monitoring is the basis of space weather research and forecast,and monitoring of space environment is an important way to obtain information and data of space environment.The space environment monitoring network can provide monitoring information of sun,cosmic rays,magnetism,ionosphere,middle and upper atmosphere,and other elements of space environment.Space environment monitoring data are transmitted to CSERF(the Center for Space Environment Research and Forecast)in real time via a space environment data transmission system,which is used for research and forecast of space environment.At present,space environment data are transmitted on WAN.The high loss rates and large delay of WAN influence the normal operation of the space environment data transmission system.WAN acceleration is to solve the performance problems of WAN transmission by means of technology under the existing network conditions.The main technologies include data cache,data compression,application optimization and transport protocol optimization.In this paper,the transport protocol optimization and application optimization are used to solve the transmission problem of space environment data on WAN.The main work of this article is as follows:(1)Investigated and researched the TCP congestion control mechanism.Representative TCP congestion control algorithms are analyzed,and the Reno,CUBIC and BBR congestion control algorithms are tested for data transmission.Analyzed the experiment results and proved that BBR algorithm,compared with the other two algorithms,perform better in WAN links of large delay,high loss rates.(2)Abstracted the physical process of space environment data transmission,and modelled the business process of space environment data transmission based on BBR congestion control algorithm.In order to reduce the difficulty of modeling,a hierarchical modeling method is adopted.In order to verify the correctness of the model,we used Visual Object Net++ modeling and simulation software to simulate the model,and verified that the space environment data transmission model established in this paper accords with space environment data transmission physical process.(3)Based on the Petri net model of space environment data transmission,according to the idea of SOA component model,a space environment data transmission system architecture based on BBR congestion control algorithm is established,and a space environment data transmission system based on BBR congestion control algorithm is implemented.A data transmission experiments are conducted to verify the efficiency and reliability of the system.It is proved that the space environment data transmission system based on BBR congestion control algorithm can improve the efficiency of space environment data transmission in WAN.