LEO/MEO双层卫星网络的性能分析

1(清华大学计算机科学与技术系智能技术与系统国家重点实验室北京 100084) 2(中国科学院软件研究所北京 100080) (wfg02@mails.tsinghua.edu.cn)

Performance Analysis of a Double-Layered Satellite Network

1(National Key Laboratory of Intelligent Technology and Systems, Department of Computer Science and Technology, Tsinghua University, Beijing 100084) 2(Institute of Software, Chinese Academy of Sciences, Beijing 100080)

摘要: 基于模型方法和软件仿真方法，对一种低轨/中轨(LEO/MEO)双层卫星网络进行了性能分析.首先建立了双层卫星网络的广义随机Petri网(GSPN)模型，通过对模型进行分析和合理简化, 采用SPNP4.0软件进行了网络性能分析.然后, 将分析的结果与采用OPNET软件对LEO/MEO双层卫星网络模拟的结果进行比较, 验证了模型分析方法的正确性，同时得到了一些新的结论.
- LEO/MEO卫星网络 /
- GSPN模型 /
- 性能分析 /
- OPNET
Abstract: The performance evaluation on a LEO/MEO satellite network is carried out by model-based analysis and software simulation, respectively. Firstly, the GSPN model of a double-layered satellite network is constructed and simplified, and then used to evaluate the network performance with SPNP4.0 software package. Then, the effectiveness of the results obtained by model-based analysis is verified in comparison with those by network simulation using OPNET, and some results are derived that the performance of double-layered constellation is better than that of single-layered one because processing and waiting delay become the main delay under high traffic condition.
- LEO/MEO satellite network /
- GSPN model /
- performance analysis /
- OPNET