文章概述

随着天空地一体化网络（SAGIN）的发展，学术界和产业界对能够处理复杂、动态拓扑并提供深度分析的卫星互联网仿真工具提出了日益迫切的需求。然而，现有的仿真平台面临着诸多挑战，譬如如何处理需要实时响应的网络需求，如何实现复杂的卫星网络层以及物理层仿真，以及仿真平台的灵活性与可扩展性等问题。为了解决这些问题，我们设计了面向天空地一体化网络的数字孪生系统，Plotinus。在下面的视频报告中，我们将详细介绍Plotinus的架构和设计细节。具体而言，Plotinus采用了基于云原生的模块化架构设计，主要包括真实数据导入模块、核心模块、接入模块和用户界面组成。以物理层模块为例，研究者可以通过重写物理层插件以仿真不同的星座或飞行器并分析频率干扰和系统容量。Plotinus支持多种路由和路径计算算法的替换，从而简化了算法的测试和部署。此外，随着系统计算能力的增加，Plotinus也支持大规模的卫星星座导入和卫星数量的增加，拥有强大的可扩展性。值得一提的是，Plotinus支持现实网络流量的实时接入，我们将通过基于真机实测的Demo演示来展示这一过程。评估结果表明，Plotinus可以有效仿真动态卫星网络中的真实设备，具备适应多种信道模型和路由算法测试的能力，凸显了Plotinus在SAGIN系统开发和分析中的重要作用，为跨层、实时和可扩展的大规模卫星互联网数字孪生系统提供了有力支持。

英文解读

中文解读

Yue Gao, Kun Qiu, Zhe Chen, et al. Plotinus:A Satellite Internet Digital Twin System[J]. Journal of Communications and Information Networks, 2024, 9(1): 24-33

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Plotinus:A Satellite Internet Digital Twin System 

作者简介

Yue Gao received his Ph.D from the Queen Mary University of London, UK, in 2007. He is a Chair Professor at the School of Computer Science, Director of the Intelligent Networking and Computing Research Centre at Fudan University, China, and a Visiting Professor at the University of Surrey, UK. His research interests include smart antennas, sparse signal processing and cognitive networks for mobile and satellite systems. He is a Fellow of the IEEE.

Kun Qiu[corresponding author] received his B.Sc. from Fudan University in 2013 and his Ph.D from Fudan University in 2019. He works for Intel as a software engineer from 2019 to 2023. He joined Fudan University in 2023 as an Assistant Professor in the School of Computer Science at Fudan University. His research interests include computer networks and computer architecture. He is a member of IEEE, ACM, and CCF.

Zhe Chen received his Ph.D in Computer Science from Fudan University, China, with a 2019 ACM SIGCOMM China Doctoral Dissertation Award. He is an Assistant Professor in the School of Computer Science at Fudan University and the Co-Founder of AIWiSe Ltd. Inc. Before joining Fudan University, he worked as a research fellow at NTU for three years, and his research achievements, along with his efforts in launching products based on them, have thus earned him 2021 ACM SIGMOBILE China Rising Star Award recently.

Wenjun Zhu received his master's degree from Nanjing University of Posts and Telecommunications, China, in 2020. He works for Intel as a software engineer from 2020 to 2023. Now, he joined Fudan University in 2023 as a software engineer. His research interests include computer networks and computer architecture.

Qi Zhang earned his B.Eng. degree from Henan University, China, in 2020 and his M.Eng. in Computer Science and Technology from Soochow University, China in 2023. He is currently pursuing his Ph.D at Fudan University. He has made significant contributions to the field of edge computing. His research primarily focuses on routing optimization in integrated space-air-ground networks, a cutting-edge area with vast potential applications.

Handong Luo received his bachelor's degree in Computer Science from Hangzhou Dianzi University, Hangzhou, China, in 2023. He is working toward a master's degree with the School of Computer Science, Fudan University, Shanghai, China. His research interests include satellite network routing and scalability.

Quanwei Lin received his bachelor's degree in Engineering Management from Nanjing Audit University, Nanjing, China, in 2021. He is working toward a master's degree with the School of Computer Science, Fudan University, Shanghai, China. His research interests include satellite network routing and link quality management.

Ziheng Yang earned his bachelor’s degree in communication engineering from Nanjing University of Posts and Telecommunications in 2022. He is pursuing his master's degree at the School of Computer Science, Fudan University, Shanghai, China. His research interests include satellite communication and beam hopping.

Wenhao Liu received his bachelor’s degree in Computer Science from Fudan University, Shanghai, China, in 2023. He is working toward a PhD at the School of Computer Science, Fudan University, Shanghai, China. His research interests include satellite network scalability and resilient architecture.