Mobile operators are counting on Long Term Evolution (LTE) technology to handle surging demand for mobile data access. But LTE developers made some poor choices, cutting spectral efficiency and thus driving up operator costs.
LTE was envisioned as an all IP system, but the RF allocations follow the voice-centric approach of earlier generations. While LTE standards allow for either Frequency Division Duplexing (FDD) or Time Division Duplexing (TDD), all initial LTE equipment uses FDD. FDD requires two separate blocks of spectrum - one for each direction. FDD makes perfect sense for bi-directional voice traffic. It makes no sense for data. With the exception of peer-to-peer file sharing (which most mobile operators block), data traffic is very asymmetric. Sending data via FDD means one block of spectrum is fully utilized and the other, equal sized block, is dramatically under utilized. Result: the operator pays for almost twice the spectrum they actually use.
Verizon is deploying LTE in the 700 MHz C block which means they are using