The following is from KDDI Annual report which is available to download here.
FMC (Fixed and Mobile Convergence) enables a variety of services and contents anywhere, any time, regardless of different communication methods and access means, be it fixed or mobile. KDDI’s next-generation infrastructure concept, “Ultra 3G,” takes this convergence one step further, to FMBC (Fixed Mobile and Broadcast Convergence). This is an area where only KDDI, which has various access lines, can pursue potentials.
The following is an article and half from the same report on FMBC:
LTE in Unlicensed Spectrum (LTE-U)
2 hours ago