#From https://www.everythingrf.com/community/what-is-terragraph

   Mar 8, 2019


   Terragraph, is a project started by facebook to reduce the time
   and cost for service providers to deploy high speed connectivity
   through the use of millimeter wave technology. It is a 60 GHz
   multi-hop multi-point wireless network that delivers gigabit
   speeds in dense urban areas. The aim of the project is to create
   a mm-Wave wireless network within a city and to deliver fiber-like
   connectivity at a lower cost than fiber. 

   Terragraph radios are based on the WiGig standard and can be
   deployed on street poles or rooftops.

   The Terragraph network operates in the unlicensed 60 GHz
   'V' band and uses the cloud for intensive data processing and
   self-organization. The 60 GHz band has over 7 GHz of bandwidth
   available for use (some countries like US are even expanding it
   to 14 GHz), making it the largest commercial radio band ever
   used.

   The technology employs a TDD/TDMA MAC structure which enables
   extremely efficient use of this spectrum even in highly congested
   scenarios. The radios are able to inter-connect to form a Layer
   3 mesh which can be scaled over large geographic areas and
   provides redundant and reliable connectivity between end-points.

   Terragraph radio nodes can be deployed on a number of physical
   assets such as street furniture to provide last-mile gigabit-per-second