I looked at 5G a lot about a year ago. Things have likely evolved from the information in this article, but I think this quote is telling.

The details of these proposed satellite systems are not currently well-known, as the development and deployment of satellite systems are highly proprietary and may take several years to finalize, during which time the operators hold details as highly confidential for obvious competitive reasons - SpaceX

http://spacenews.com/dish-network-battles-oneweb-and-spacex-for-ku-band-spectrum-rights/
http://archive.is/4MD9h