| 标 题： |
5G Massive Machine Type Communication Performance in Non-Terrestrial Networks with LEO Satellites
低轨卫星在非地面网络中的5G大规模机器类通信性能 |
| 作 者： |
Jonas Sedin
Smriti Gopinath
Xingqin Lin
Olof Liberg
Talha Khan
Emre Yavuz
Sebastian Euler |
| 关键词： |
Non-Terrestrial network [非地面网络]
5G [5G]
IoT [物联网]
NB-IoT [NB-IoT]
LTE-M [LTE-M]
LEO [LEO] |
| 出版年： |
2021 |
| 文集名： |
2021 IEEE Global Communications Conference (GLOBECOM 2021)
2021年IEEE全球通信会议（GLOBECOM 2021） |
| 会议名： |
2021 IEEE Global Communications Conference (GLOBECOM 2021)
2021年IEEE全球通信会议（GLOBECOM 2021） |
| 届 次： |
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| 摘 要： |
An Internet of Things (IoT) non-terrestrial network (NTN) refers to an IoT network that utilizes airborne or spaceborne payload for communication. Using NTNs to serve IoT devices has the potential of further expanding the use cases as well as coverage for IoT. This has motivated the work in 3GPP on evolving Narrowband Internet of Things (NB-IoT) and Long Term Evolution for machine type communications (LTE-M) wireless access technologies to support NTN. While the topic of IoT over NTN has attracted much attention, the performance of IoT NTN has not been well studied. In this paper, we investigate the performance of IoT low Earth orbit (LEO) NTN utilizing LTE-M by evaluating the connection density. The evaluation results show that for a LEO satellite at 600 and 1200 km altitude, LTE-M can support 364 and 78 users per km~2 for a single narrowband in its coverage area, respectively. This implies that an LTE-M based LEO NTN can potentially serve IoT in remote areas, thereby complementing the coverage of terrestrial networks.
物联网（IoT）非地面网络（NTN）是指利用空中或航天载荷进行通信的物联网网络。通过NTN为物联网设备提供服务，有望进一步拓展物联网的应用场景和覆盖范围。这促使3GPP在演进窄带物联网（NB-IoT）以及机器类通信长期演进（LTE-M）无线接入技术方面开展研究，以支持NTN。尽管关于NTN上的物联网议题已引起广泛关注，但物联网在NTN中的性能研究仍不充分。本文通过评估连接密度，研究了基于LTE-M的低地球轨道（LEO）物联网NTN的性能。评估结果显示，在600公里和1200公里高度的LEO卫星上，LTE-M在单个窄带覆盖区域内每平方公里可支持364和78名用户。这意味着基于LTE-M的LEO物联网NTN有望为偏远地区提供物联网服务，从而弥补地面网络的覆盖不足。 |
| 中文内容为网络AI翻译，专业术语未必准确，仅供参考。 |
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