  While 5G is being tested worldwide and anticipated to be rolled out gradually
in 2019, researchers around the world are beginning to turn their attention to
what 6G might be in 10+ years time, and there are already initiatives in
various countries focusing on the research of possible 6G technologies. This
article aims to extend the vision of 5G to more ambitious scenarios in a more
distant future and speculates on the visionary technologies that could provide
the step changes needed for enabling 6G.
