面向大规模卫星网络协议设计和性能评估的实时仿真系统设计及验证

doi:10.11959/j.issn.2096-8930.2023004

Abstract

Abstract:

Aiming at the problems above, a real-time network simulation test system named SiT4NET was studied and developed.Firstly, SiT4NET used container technique to solved the problem of large-scale network node deployment with limited resources on the basis of ensuring nodes’ independence, thus improved 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 were innovatively proposed to provided a strong foundation for real-time network simulation.And thirdly, through the standard high-level protocol interface, internal packet format and reconfi gurable mechanism of packet processing, SiT4NET reduced the complexity of conversion between the simulation implementation of the protocol and the target platform.Finally, by set up the same satellite network environment on SiT4NET and OPNET platforms, set up multiple groups of simulation scenarios, compared and analyzed the results, it showed that this method could met the performance requirements of large-scale satellite network.

Key words: container technology, real-time simulation, virtual packet transmission, graded data unit management

CLC Number:

TP927.2

Qixuan CAO, Yan SHI, Lianwei ZHOU, Xinwang DING. Design and Verifi cation of Real-Time Simulation System for Protocol Design and Performance Evaluation of Large-Scale Satellite Network[J]. Space-Integrated-Ground Information Networks, 2023, 4(1): 31-41.

Figures/Tables 14

References 14

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参数	值
卫星总数	144颗
发射机发包速率	1 Gbit/s
数据包大小	1 500字节
发包间隔	10 ms
仿真时间	100 s

仿真次数/次	OPNET平台测试平均时延/ms	SiT4NET平台测试平均时延/ms
20	62.701	62.882
40	62.701	62.881
60	62.701	62.881
80	62.701	62.884
100	62.701	62.883

仿真次数/次	OPNET测试平均吞吐量/(Mbit·s^-1)	SiT4NET测试平均吞吐量/(Mbit·s^-1)
20	1.144	1.129
40	1.144	1.128
60	1.144	1.129
80	1.144	1.129
100	1.144	1.129

Design and Verifi cation of Real-Time Simulation System for Protocol Design and Performance Evaluation of Large-Scale Satellite Network

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