论文标题
使用高海拔平台生存的自由空间光学网络网络
Survivable Free Space Optical Mesh Network using High-Altitude Platforms
论文作者
论文摘要
自由空间光学（FSO）通信是指空间中光信号传播的信息传输技术。 FSO通信要求发射器和接收器直接彼此见面。已经提出了高空平台（HAP），用于在平流层中携带FSO收发器。具有FSO链接的多主HAP网络可以在接地FSO节点之间中继流量。在这项研究中，我们提出了一个端到端的切换模型，用于在HAP网络上转发大量的接地FSO节点之间的流量。采用了一种保护机制来改善云存在的沟通生存能力，这可能会破坏HAP和地面节点之间的视线（LOS）。我们提出了一种用于设计可生存的HAP网络拓扑的算法，给定了一组地面FSO节点。结果表明，即使具有生存能能的网络使用更多的资源，它们并不比在设备（即HAP和FSO设备）以及波长资源利用方面的生存能力的那些资源更昂贵。
Free space optical (FSO) communication refers to the information transmission technology based on the propagation of optical signals in space. FSO communication requires that the transmitter and receiver directly see each other. High-altitude platforms (HAPs) have been proposed for carrying FSO transceivers in the stratosphere. A multihop HAP network with FSO links can relay traffic between ground FSO nodes. In this study, we propose an end-to-end switching model for forwarding traffic between massive pairs of ground FSO nodes over a HAP network. A protection mechanism is employed for improving the communication survivability in the presence of clouds, which may break the line of sight (LoS) between HAPs and ground nodes. We propose an algorithm for designing the topology of the survivable HAP network, given a set of ground FSO nodes. The results demonstrate that, even though networks with survivable capacity use more resources, they are not necessary much more expensive than those without survivability in terms of equipment, i.e., HAPs and FSO devices, and in terms of wavelength resource utilization.
