Light Reading has and article that describes T-Mobile's wireless network evolution plans. T-Mobile plans to continue to make software upgrades to its HSPA network to improve its performance; however, the company will not make hardware upgrades. Instead it will move to LTE at that point.
With software upgrades, T-Mobile can boost its current 7.2 Mbps HSDPA network up to 14.4 Mbps on the downlink. Beyond that, HSPA Evolution (or HSPA+) can boost 3G network speeds to 28.8 Mbps or more but requires MIMO antennas. That is where T-Mobile draws the line.
T-Mobile also stated that it is considering deploying TD LTE in currently unused TD spectrum that it owns in Europe.
T-Mobile's approach makes sense. It will put them onto the OFDM track earlier than later.
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