  Motivated by the increasing variance of suggested Internet of Things (IoT)
applications and the lack of suitability of current wireless technologies in
scalable, long range deployments, a number of diverging Low Power Wide Area
(LPWA) technologies have been developed. These technologies promise to enable a
scalable high range network on cheap low power devices, facilitating the
development of a ubiquitous IoT. This paper provides a definition of this new
LPWA paradigm, presents a systematic approach to defined suitable use cases,
and undertakes a detailed comparison of current LPWA standards, including the
primary technologies, upcoming cellular options, and remaining proprietary
solutions.
