5G traffic expectations require not only the appropriate access infrastructure, but also the corresponding backhaul infrastructure to ensure well-balanced network scaling. Optical fiber and terrestrial wireless backhaul will hardly meet 100 percent coverage, and satellite must be considered within the 5G infrastructure to boost ubiquitous and reliable network utilization. This work presents the main outcomes of the SANSA project, which proposes a novel solution that overcomes the limitations of the traditional fixed backhaul. It is based on a dynamic integrated satellite- terrestrial backhaul network operating on the mmWave band. Its key principles are seamless integration of the satellite segment into terrestrial backhaul networks, a terrestrial wireless network capable of reconfiguring its topology according to traffic demands, and aggressive frequency reuse within the terrestrial segment and between terrestrial and satellite segments. The two technological enablers of SANSA are smart antenna techniques at mmWave and software defined intelligent hybrid network management. This article introduces these 5G enablers, which permit satellite communications to play a key role in different 5G use cases, from the early deployment of 5G services in sparse scenarios to enhanced mobile broadband in denser scenarios.

中文翻译：

---

由MmWave频段的智能天线启用的共享访问卫星-地面可重配置回程网络

5G流量的期望不仅需要适当的访问基础架构，还需要相应的回程基础架构，以确保均衡的网络扩展。光纤和地面无线回程几乎无法满足100％的覆盖范围，必须在5G基础架构中考虑使用卫星，以提高无处不在和可靠的网络利用率。这项工作介绍了SANSA项目的主要成果，该项目提出了一种新颖的解决方案，该解决方案克服了传统固定回程的局限性。它基于在mmWave频段上运行的动态集成卫星地面回程网络。它的关键原理是将卫星网段无缝集成到地面回程网络中，后者是一种能够根据流量需求重新配置其拓扑的地面无线网络，以及在地面部分以及地面和卫星部分之间进行积极的频率重用。SANSA的两个技术推动力是mmWave的智能天线技术和软件定义的智能混合网络管理。本文介绍了这些5G促成因素，这些促成因素使卫星通信可以在不同的5G用例中发挥关键作用，从稀疏方案中的5G服务的早期部署到密集型方案中增强的移动宽带。