The Internet of Things from Space: Transforming LTE Machine Type Communications for Non-Terrestrial Networks

Abstract

Satellite communication is experiencing a new dawn thanks to low Earth orbit mega constellations being deployed at an unprecedented pace. Fueled by the renewed interest in non-terrestrial networks (NTNs), 3GPP is evolving 5G New Radio, Narrowband Internet of Things, and Long Term Evolution for machine type communications (LTE-M) for NTN operation. This article focuses on LTE-M and the essential adaptations needed to support satellite communication. Specifically, the major challenges facing LTE-M NTNs at the physical and higher layers are discussed, and potential solutions are outlined.