论文标题
通过多连通性进行航空车辆的超级低延迟通信
Ultra-Reliable Low-Latency Communication for Aerial Vehicles via Multi-Connectivity
论文作者
论文摘要
航空车（AV），例如电动垂直起飞和降落（EVTOL），使航空客运运输成为城市环境中的现实。但是，他们的沟通连通性仍在研究中，以实现他们的安全和全尺度操作，这需要严格的端到端（E2E）可靠性和延迟。在本文中，我们评估了AVS下行链路通信的可靠性和延迟，即AVS的远程驾驶，控制/遥测流量。我们研究直接空对地面（DA2G）和空对空地（A2A）通信技术，以及高空平台（HAPS），以探索在回程链路上满足要求的多连通性（MC）选项如何满足苛刻的E2E连接需求的条件。由于与AVS的下行链路控制通信的性质，我们认为的用例是有限区块长度（FBL）制度下的超级低延迟通信（URLLC）。在我们的数值研究中，我们发现，由于视线（LOS）干扰和下降地面基站（BS）天线的增益减少，因此通过与AVS的单个连通性提供要求非常具有挑战性。我们还发现，即使有非常有效的干扰减轻，为地面用户设计的现有蜂窝网络也无法满足要求MC解决方案的URLLC要求。
Aerial vehicles (AVs) such as electric vertical take-off and landing (eVTOL) make aerial passenger transportation a reality in urban environments. However, their communication connectivity is still under research to realize their safe and full-scale operation, which requires stringent end-to-end (E2E) reliability and delay. In this paper, we evaluate reliability and delay for the downlink communication of AVs, i.e., remote piloting, control/telemetry traffic of AVs. We investigate direct air-to-ground (DA2G) and air-to-air (A2A) communication technologies, along with high altitude platforms (HAPs) to explore the conditions of how multi-connectivity (MC) options satisfy the demanding E2E connectivity requirements under backhaul link bottleneck. Our considered use case is ultra-reliable low-latency communication (URLLC) under the finite blocklength (FBL) regime due to the nature of downlink control communication to AVs. In our numerical study, we find that providing requirements by single connectivity to AVs is very challenging due to the line-of-sight (LoS) interference and reduced gains of downtilt ground base station (BS) antenna. We also find that even with very efficient interference mitigation, existing cellular networks designed for terrestrial users are not capable of meeting the URLLC requirements calling for MC solutions.
