面向大规模卫星网络设计和性能评估的实时仿真系统设计及验证

摘要/Abstract

摘要：

大规模星座网络具有结构复杂、拓扑动态变化的特点，OPNET、QUALNET、NS3 等商业或开源仿真软件，不仅无法有效模拟大规模网

络场景下的真实数据传输，且难以支持从仿真实现到目标平台实现的快速转换。针对当前仿真工具的这些问题，我们研究并开发了实时网

络仿真测试系统 SiT4NET。首先，SiT4NET 利用容器技术在保证节点独立性的基础上、解决了有限仿真资源实现大规模网络节点部署问题，提升了仿真系统的资源利用率。其次，创新地提出了基于数据单元的节点间分组传输和系统级数据单元申请/回收机制，为网络的实时仿真提供核心支撑。然后，通过标准高层协议接口和内部分组格式及可重构的分组处理机制，降低了协议的仿真实现与目标平台之间转换复杂度。最后，通过比较 SiT4NET 和 OPNET 平台搭建相同的卫星网络环境，设置多组仿真场景，对仿真结果进行比较和分析，说明本方法可以满足大规模卫星网络性能需求。

关键词:

容器技术, 实时仿真, 虚拟分组传输, 分级数据单元管理

Abstract: Large-scale constellation networks have the characteristics of complicated structureand dynamic topology. Thosecommercial or open-source simulation platforms, such as OPNET, QUALNET and NS3,are not only unable to effectively simulate the real data transmission in large-scale networks, but also difficult to support fast conversion from simulation implementation to target platform implementation.Aiming at the problemsabove, we studied and developed a real-time network simulation test system named SiT4NET.Firstly,SiT4NET usescontainer technique to solve the problem of large-scale network node deployment with limited resourceson the basis of ensuring nodes’ independence, thus improving the resource utilization of the simulation system. Secondly, the packet transmission between nodes based on data units and the mechanism for requesting/retrieving system-level data units are innovatively proposed to provide a strong foundation for real-time network simulation. And thirdly, through the standard high-level protocol interface, internal packet format andreconfigurable mechanism of packet processing, SiT4NET reduces the complexity of conversion between the simulation implementation of the protocol and the target platform. Finally, by setting up the same satellite network environment on SiT4NET and OPNET platforms, setting up multiple groups of simulation scenarios, comparing and analyzing the results, it shows that this method can meet the performance requirements of large-scale satellite networks.

Key words:

Real-time Simulation, Container Technology, Virtual Packet Transmission, Data Unit Management

曹琦轩, 史琰, 周连伟, 丁新旺.

面向大规模卫星网络设计和性能评估的实时仿真系统设计及验证

[J]. 天地一体化信息网络.

CAO Qixuan, SHI Yan, ZHOU Lianwei, DING Xinwang.

Research on areal-time simulation system for protocol design and performance evaluation of large-scale satellite networks

[J]. Space-Integrated-Ground Information Networks.

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