Great, we all want 5G mobile broadband. Now just how are we gonna wire it all up?

Asking for a friend (the UN's standards bods at the ITU)

The UN's International Telecommunication Union (ITU) has set up a new focus group to look at how today's landline networks can be adapted to provide the backhaul for 5G. In other words, how to use today's cabling to link high-speed 5G phone masts to carrier networks and the wider internet."