But Femto BTSs (the home base stations thats catching-up) are using the public internet for backhauling. But maybe since you’re talking about 1-2 users only the public IP network is OK (?)
I fully agree though, that for a macro BTS with say 12 radios per sector an IP backhaul and using public IP doesn’t sound logical.
Another solution that vendors are using to save on the backhaul is the Abis compression technique in case their IP backhaul solution is not ready.
RK