China Mobile, Nokia demo 3.5-GHz inter-band CA

15 Jul 2015
00:00

China Mobile and Nokia have used Mobile World Congress Shanghai 2015 to demonstrate 220Mbps peak transmission rates over interband TD-LTE carrier aggregation.

The companies conducted a live demonstration using existing an Nokia base station and a test device. For the trial the companies combined 2.5-GHz carriers with 3.5-GHz spectrum.

Nokia and China Mobile said the trial demonstrates that the 3.5-GHz band, which has 400 MHz of unused LTE spectrum, could be the key to allowing operators worldwide to keep up with demand for high-bandwidth mobile broadband.

“The mobile 4G market is developing very fast in China. On the one hand, millions of users are able to enjoy the convenience brought to them by mobile broadband; on the other hand, we feel the necessity to increase spectrum resources to meet the needs of fast growing data traffic,” China Mobile Research Institute vice president Huang Yuhong commented.

“The 3.5 GHz band is another important spectrum resource for 4G networks, which will be used in TD-LTE. This demo not only proves the commercial feasibility of the 3.5 GHz TD-LTE band, but also shows 3.5 GHz can be aggregated with current bands, enhancing 4G networks with more capacity.”

Currently 11 of the 54 commercially launched TD-LTE networks incorporate 3.5-GHz spectrum.

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