Anyone heard of Vplus?
It seems to be a proposal by Alcatel to fit between VDSL2's 17a profile and G.fast, with the main focus on loops of up to 400m, giving aggregate speeds of 200-300Mbps.
One drawback of deploying G.Fast (in the future) is the fact that it has to avoid the 17MHz of spectrum used by VDSL2, so as to not interfere. Big problem...
Ironically, profile 30a of VDSL2 has a similar problem... it cannot work at the same time (in the same bundle) as 17a systems, because it uses frequencies in a different way (each tone is twice as wide as today's 4.3125 kHz). It'd probably interwork with today's 17a systems, but wouldn't work with tomorrow's vectoring systems.
Gplus overlays 17a with identical frequency use, and extends up to 30MHz. Of course it uses vectoring as standard.
I wonder if this will fly at all? Given the strong takeup of 17a systems, I suspect it could be a better step than adding the standard 30a profile. Might also be useful in FTTRN; I suspect line distances there will suit this better than G.fast.