Nokia and SK Telecom announced they have achieved a world record 3.78 Gbps downlink speed using carrier aggregation to converge TDD and FDD spectrum.
The demonstration involved aggregating a whopping 10 different spectrum frequencies for a combined 200 MHz of bandwidth.
Nokia used its Single RAN offering including its Flexi Multiradio 10 base station, using software upgraded to support TDD/FDD carrier aggregation and LTE-A MIMO technology.
The 3GPP's CA specifications foresee the aggregation of five carriers for 100 Mbps of total bandwidth. This trial doubled those specifications.
To put the speed in context, the companies said that with a downlink speed of 3.78 Gbps, a user could download a 5GB HD movie in just 11 seconds.
Nokia added that combining TDD and FDD LTE spectrum resources has the potential to increase an operator's capacity for downlink and uplink intensive applications, and to eliminate the need for supplementary downlink.
Word of the trial came days after Huawei and LG U+ announced they had completed the first live trial of tri-band carrier aggregation on a commercial LTE network. Huawei also recently completed a test of 300Mbps LTE-A Category 6.