宽带非地球静止轨道卫星通信系统：研究挑战与关键机遇
Broadband Non-Geostationary Satellite Communication Systems: Research Challenges and Key Opportunities
AI总结：
本文系统梳理了宽带NGSO卫星通信系统在星座架构、频谱共存、资源管理和组网等方面的关键挑战，并展望了未来研究方向。
摘要：
除了传统的地球静止轨道（GSO）卫星宽带通信服务外，非地球静止轨道（NGSO）卫星被设想用于支持来自众多行业的各种新型通信用例。这些新场景带来了许多前所未有的挑战，本文将与若干潜在的未来研究机遇一并讨论。与GSO卫星相比，NGSO系统以多种优势而闻名，包括低成本、更低的传播时延、更小的体积以及更低的损耗等重要特性。然而，仍有许多部署挑战需要解决，以确保其不仅与GSO系统无缝集成，而且还能与地面网络无缝集成。在本文中，我们讨论了若干关键挑战，包括卫星星座与架构设计、在频谱接入和监管问题方面与GSO系统的共存、资源管理算法以及NGSO组网需求。此外，还讨论了通过NGSO系统提供安全通信的最新进展。最后，本文指出了多个重要的开放问题和研究方向，以激励面向下一代卫星网络的进一步研究。
英文摘要：
Besides conventional geostationary (GSO) satellite broadband communication services, non-geostationary (NGSO) satellites are envisioned to support various new communication use cases from countless industries. These new scenarios bring many unprecedented challenges that will be discussed in this paper alongside with several potential future research opportunities. NGSO systems are known for various advantages, including their important features of low cost, lower propagation delay, smaller size, and lower losses in comparison to GSO satellites. However, there are still many deployment challenges to be tackled to ensure seamless integration not only with GSO systems but also with terrestrial networks. In this paper, we discuss several key challenges including satellite constellation and architecture designs, coexistence with GSO systems in terms of spectrum access and regulatory issues, resource management algorithms, and NGSO networking requirements. Additionally, the latest progress in provisioning secure communication via NGSO systems is discussed. Finally, this paper identifies multiple important open issues and research directions to inspire further studies towards the next generation of satellite networks.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
