Space-air-ground integrated network (SAGIN) is envisioned as a promising solution to provide cost-effective, large-scale, and flexible wireless coverage and communication services. Since realworld deployment for testing of SAGIN is difficult and prohibitive, an efficient SAGIN simulation platform is requisite. In this article, we present our developed SAGIN simulation platform which supports various mobility traces and protocols of space, aerial, and terrestrial networks. Centralized and decentrallized controllers are implemented to optimize the network functions such as access control and resource orchestration. In addition, various interfaces extend the functionality of the platform to facilitate user-defined mobility traces and control algorithms. We also present a case study where highly mobile vehicular users dynamically choose different radio access networks according to their quality of service (QoS) requirements.

中文翻译：

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空空地面综合网络综合仿真平台

空空地面综合网络（SAGIN）被设想为一种有前途的解决方案，可提供具有成本效益的，大规模且灵活的无线覆盖和通信服务。由于在现实世界中部署用于测试SAGIN的困难且令人望而却步，因此必须有一个有效的SAGIN仿真平台。在本文中，我们介绍了我们开发的SAGIN仿真平台，该平台支持空间，空中和地面网络的各种移动轨迹和协议。实施集中式和分散式控制器以优化网络功能，例如访问控制和资源编排。另外，各种接口扩展了平台的功能，以促进用户定义的移动性跟踪和控制算法。