5G networks are expected to become the main infrastructure for security verticals such as disaster relief, humanitarian aid, and governmental and defense communications. In the case of defense services, especially, there are complex areas where coverage and connectivity are not reliable or are completely absent. Thus, the deployment of drones as mobile base stations (BSs) also needs a system designed for reliable backhaul based on satellites. However, a baseband unit (BBU) [devoted to baseband signal processing at the radio access network (RAN)] on drones is not a flexible solution and may require great power supply and processing capabilities, which a drone can hardly host.

中文翻译：

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基于 CubeSat 的 5G 云无线电接入网络：随时随地按需连接的新范例

5G 网络有望成为救灾、人道主义援助以及政府和国防通信等安全垂直领域的主要基础设施。特别是在国防服务的情况下，存在覆盖和连接不可靠或完全不存在的复杂区域。因此，将无人机部署为移动基站 (BS) 还需要一个专为基于卫星的可靠回程而设计的系统。然而，无人机上的基带单元（BBU）[致力于无线接入网络（RAN）的基带信号处理]不是一个灵活的解决方案，可能需要强大的电源和处理能力，而无人机几乎无法承载。