These comments that call for "I'd rather xyz was improved, why are they bothering with foo?" are silly. Very simply: the scientists who study xyz don't know a darn thing about foo.
Also 30 gigabits/second is so effing fast that they hopefully wouldn't need data caps at the 2 to 4 gig mark, but could go higher. Because, in theory, those data caps exist because that's the cell companies can reasonably provide to everyone. yeah I know I'm being way too hopeful given the nature of cell phone companies.
... improving the efficiency of spectrum utilization ...
Like by introducing 4g? OK, maybe that wasn't an intelligent response of me. What other techniques are there that increase spectrum effeciency?