论文标题
5G物联网的卫星网络：卸载和回程
5G satellite networks for IoT: offloading and backhauling
论文作者
论文摘要
5G蜂窝网络的主要驱动力之一是为各种物联网（IoT）设备提供连接服务。考虑到全球范围内的物联网设备的潜在体积，下一个飞跃是将非事物网络（NTN）集成到5G陆生系统中，从而扩展了覆盖范围并补充地面服务。本文着重于使用低地球轨道（LEO）卫星星座用于两个特定目的：卸载和回程。前者允许从拥挤的地面网络（通常位于非常密集的区域）中卸载IoT流量。在后一种应用程序中，星座提供了多跳回程，将远程陆地GNB连接到5G核心网络。在提供了3GPP标准化过程状态的概述之后，我们对用户数据性能进行建模和分析，特别是在上行链路访问和卫星多跳星路径中。对碰撞的评估，信息的延迟和年龄以及陆地和卫星访问网络的比较提供了有用的见解，以了解LEO星座在物联网流量的卸载和撤退的潜力。
One of the main drivers of 5G cellular networks is provision of connectivity service for various Internet of Things (IoT) devices. Considering the potential volume of IoT devices at a global scale, the next leap is to integrate Non-Terrestrial Networks (NTN) into 5G terrestrial systems, thereby extend the coverage and complement the terrestrial service. This paper focuses on the use of Low-Earth Orbit (LEO) satellite constellations for two specific purposes: offloading and backhauling. The former allows offloading IoT traffic from a congested terrestrial network, usually in a very dense area. In the latter application, the constellation provides a multi-hop backhaul that connects a remote terrestrial gNB to the 5G core network. After providing an overview of the status of the 3GPP standardization process, we model and analyze the user data performance, specifically in the uplink access and the satellite multi-hop constellation path. The evaluation of the collisions, the delay and the Age of Information, and the comparison of the terrestrial and the satellite access networks provide useful insights to understand the potential of LEO constellations for offloading and backhauling of IoT traffic.
