T-Mobile USA recently completed an eight-city spectrum-interference study (click here to check it out) with the goal of convincing the federal government to relinquish a massive chunk of bandwidth that--if all goes to plan--T-Mobile might use to build an LTE network. And though T-Mobile still faces a range of challenges in its bid for the spectrum (and may not even use it for LTE) the situation does give the carrier yet another option in its efforts to maintain equal footing with rivals in the mobile broadband game. Article