5G satellite networks for Internet of Things: Offloading and backhauling,International Journal of Satellite Communications and Networking

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5G satellite networks for Internet of Things: Offloading and backhauling
International Journal of Satellite Communications and Networking ( IF 0.9 ) Pub Date : 2021-02-03 , DOI: 10.1002/sat.1394
Beatriz Soret ₁ , Israel Leyva‐Mayorga ₁ , Stefano Cioni ₂ , Petar Popovski ₁

Affiliation

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 extending the coverage and complementing 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 Next Generation NodeB (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 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.

中文翻译：

用于物联网的 5G 卫星网络：卸载和回程

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。考虑到全球范围内物联网设备的潜在数量，下一个飞跃是将非地面网络（NTN）集成到 5G 地面系统中，从而扩大覆盖范围并补充地面服务。本文侧重于将低地球轨道 (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卸载物联网流量，通常位于非常密集的区域。在后一种应用中，星座提供了一个多跳回程，将远程地面下一代 NodeB (gNB) 连接到 5G 核心网络。在概述了 3GPP 标准化进程的状态之后，我们对用户数据性能进行建模和分析，特别是在上行链路接入和卫星多跳星座路径中。碰撞评估、延迟和信息时代，以及地面和卫星接入网络的比较，为了解 LEO 星座在物联网流量卸载和回程方面的潜力提供了有用的见解。

更新日期：2021-02-03

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