Nokia demos use of 3.5GHz LTE FDD-TDD for 3 carrier aggregation

Nokia Networks, Deutsche Telekom and Cosmote demonstrate first LTE-Advanced 3 carrier aggregation using band 3 FDD and band 42 TDD to prove feasibility of LTE-TDD on the 3.5 GHz band 42

Nokia demos use of 3.5GHz LTE FDD-TDD for 3 carrier aggregation

At Infocom World 2015 in Athens, Nokia Networks, Deutsche Telekom and its Greek subsidiary Cosmote have demonstrated the first use of LTE-Advanced 3 carrier aggregation combining LTE-FDD in band 3 (1.8 GHz) with LTE-TDD in band 42 (3.5 GHz).

The showcase confirmed the ability of 3.5 GHz LTE-TDD technology to increase mobile broadband capacity and improve the consumer experience. The importance of 3.5 GHz is that it provides 400 MHz of fresh TDD spectrum bandwidth available in many countries, meaning it can provide a good solution for capacity expansion to meet future demand based on LTE and LTE-A Pro technologies.

12 out of 62 commercially launched TD-LTE networks currently use the 3.5 GHz LTE-TDD spectrum, according to GSA (13 October 2015). The demonstration used Nokia’s Flexi Multiradio 10 base station for both LTE-FDD and -TDD technologies, along with its high-capacity TD-LTE-Advanced 8-pipe radio.

Rachid El Hattachi, SVP Technology Architecture & Blueprints, Deutsche Telekom, said: "Spectrum plays a fundamental role for mobile communications as we look to exploit opportunities to meet the growing demand for network capacity. The demonstration of FDD-TDD 3 carrier aggregation together with our partners, sets a benchmark for a completely new combination of technologies including the increasingly recognized band 42 which will be expected to be a mainstream TDD band."

Markus Borchert, Senior Vice President Europe at Nokia Networks, said: "We are proud and pleased to partner with Deutsche Telekom and Cosmote to demonstrate the world's first 3 carrier aggregation across LTE-FDD and -TDD using band 42. With Nokia Networks' expertise in LTE-Advanced, we will help the operator take full advantage of its LTE spectrum to deliver the data experience its subscribers deserve."

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