论文标题
综合地面和非事物网络中的无人机通信
UAV Communications in Integrated Terrestrial and Non-terrestrial Networks
论文作者
论文摘要
随着对整合地面网络（TNS）和非事务网络（NTN）的兴趣越来越多，一个关键问题是，这种新的范式是否也可以被机会性地利用，以增强城市地区的服务。我们在集成的TN-NTN的背景下评估了这种可能性，其中包括与低地球轨道（LEO）卫星星座配对的地面细胞部署，可为地面用户（GUES）和未驾驶的航空车辆（UAVS）提供低于6 GHz的连接。我们的研究表明，将无人机流量卸载到NTN节段，大幅度将无人机的下行链路断电从70％降低到几乎零，只要Leo卫星星座足以保证最小的高度高度，也可以提高其上链接信号质量。将无人机卸载到NTN还受益于共存的GUE，以防止上行链路的停机约12％，而GUE将会产生。尽管带宽有限的带宽低于6 GHz，但即使在巴塞罗那的大小的区域，每个单元格的大小都有多达一个活跃的无人机，但NTN销售的无人机满足命令和控制率要求。较小的无人机种群产生的速率较高，可能实现空中宽带应用。
With growing interest in integrating terrestrial networks (TNs) and non-terrestrial networks (NTNs) to connect the unconnected, a key question is whether this new paradigm could also be opportunistically exploited to augment service in urban areas. We assess this possibility in the context of an integrated TN-NTN, comprising a ground cellular deployment paired with a Low Earth Orbit (LEO) satellite constellation, providing sub-6 GHz connectivity to an urban area populated by ground users (GUEs) and uncrewed aerial vehicles (UAVs). Our study reveals that offloading UAV traffic to the NTN segment drastically reduces the downlink outage of UAVs from 70% to nearly zero, also boosting their uplink signal quality as long as the LEO satellite constellation is sufficiently dense to guarantee a minimum elevation angle. Offloading UAVs to the NTN also benefits coexisting GUEs, preventing uplink outages of around 12% that GUEs would otherwise incur. Despite the limited bandwidth available below 6 GHz, NTN-offloaded UAVs meet command and control rate requirements even across an area the size of Barcelona with as many as one active UAV per cell. Smaller UAV populations yield proportionally higher rates, potentially enabling aerial broadband applications.
