Russia’s MTS Demonstrates the Value of Hybrid TDD and FDD-LTE Networks

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4Q 2013 | IN-1017268

 

Hybrid Solutions Now Viable

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Back in the early 2000s, a number of 3G licenses were issued that had frequency division duplex (FDD) and time division duplex (TDD) spectrum. For example, Vodafone UK secured 1x5 MHz of unpaired spectrum to go with its 2x15 MHz of paired spectrum. In Finland, TeliaSonera, Elisa, and DNA all received TDD spectrum. The underlying principle was that the TDD 3G WCDMA spectrum was intended for non-time critical data applications such as e-mail, content, and game downloads. As it turned out, the TDD service was too visionary for its time.

Roll on 6 years, and another attempt was made with WiMAX. Certainly a number of WiMAX licenses were issued (around 220 WiMAX 16e licenses in addition to fixed wireless WiMAX 16d licenses), but subscriber adoption has been constrained and looking dim for the future. “Traction” in the market was achieved in Japan (UQ Communications), the United States (Clearwire), South Korea (Korea Telecom), and Russia (Yota)....

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