Basically a function of lightRadio:
It's basically cloud computing for cellular architecture.
AT&T and Verizon have too much damn costs with running urban cell sites with very high utility (power) costs.
Instead of doing the signal processing coming off the tower panels right at that remote location with a mini-data-center-co-location box (you've seen those noisey boxes), why not farking consolidate ALL of that into AT&T/Verizon and who have you'es nearest Central Offices (CO)'es Data-centers... They already have the fiber from the regional aggregation point to the Metro packet core POP.
The industry has been going for this for a LONG TIME.
This is a very expensive version of a power over ethernet corporate solution instead using minimal power + CPRI fiber back-haul.
ALL of their base-band radio digital signal processing is consolidated into the carriers regional data-centers/COes/Exchanges/etc in a PROPER DATA-CENTER and CLUSTERED for MAXIMUM performance with algorithms to dynamically re-balance traffic across the cluster in their CO/data-center versus the remote cell site...
It's a BBU (base-band unit) and RRU (remote radio unit).
And considering T and VZ in their own ILEC markets have dark fiber to splice into this should be a piece of cake...
iPhone 4 on AT&T:
At the max distance of 25 miles this arrangement works at quite well for most suburban and urban areas. I hope the route the fiber takes from the cell site to the CO/data center/exchange etc.. isn't as convoluted like the route by POTS lines, that would defeat the purpose of "cloud computing" the cellular voice/data if it goes over 25 miles.