天空地融合网络架构与传输优化技术

doi:10.11959/j.issn.2096-8930.2023020

Abstract

Abstract:

With the continuous expansion of application requirements, how to provide efficient networking services in a heterogeneous networking environment integrating space, space and ground have become a new problem.Through the analysis of the application scenarios and technical requirements of the future space-air-ground integrated network, a space-air-ground integrated network architecture based on a software-defined network was proposed to met the requirements of rapid response and collaborative processing.At the same time, it briefly expounded on its main components and transmission optimization technology.Then, the development trends and challenges of the software-defined space-air-ground integrated network architecture were summarized and prospected, which provided a reference for the future development of an space-air-ground integrated network.

Key words: space-air-ground integrated network, network architecture, software-defined network

CLC Number:

TN92

Siqi HUANG, Deze ZENG, Yuepeng LI, Liangyu ZHANG, Feng GAO. Space-Air-Ground Integrated Network Architecture and Transmission Optimization Technology[J]. Space-Integrated-Ground Information Networks, 2023, 4(2): 62-70.

Figures/Tables 4

References 12

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约束条件	误码率	通信状态	RTT	上下行链路带宽比	链路丢包原因	通信硬件性能	数据传输性能
近地通信	小于10^-10	无间断	毫秒级	1:1	数据拥塞	高性能	吞吐量大，高可靠
卫星通信	10^-8～10^-4	间断	时延长	10:1到1000:1	多方面	低性能	最大的链路利用率
提升方案	对链路丢包响应；SNACK；包头压缩	允许数据间断传输	新窗口调整方案和定时器	控制速率；压缩；减少确认平均率	对不同数据缺失方式提供SCMP信号	提前对数据处理；设置记录临界值	新的窗口控制算法；丢包较多时使用SNACK

Space-Air-Ground Integrated Network Architecture and Transmission Optimization Technology

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