SK Telecom tests LTE-A five-band carrier aggregation on its commercial network

February 27, 2017 // By Jean-Pierre Joosting
SK Telecom has successfully tested LTE-Advanced (LTE-A) five-band carrier aggregation (CA) on its commercial network. Bandwidth resources were: 10-MHz bandwidth in the 800 MHz band, 20-MHz bandwidth in the 1.8 GHz band, 10-MHz bandwidth in the 2.1 GHz band, 10-MHz + 20-MHz bandwidths in the 2.6 Ghz band.

Since June 1, 2016, SK Telecom has been providing 500 Mbps LTE-A Pro service by applying 256 QAM technology to its tri-band LTE-A CA network. Also, the company has acquired additional spectrum in the 2.6 GHz band in May 2017, securing the basis for LTE-A five-band CA.

In addition, SK Telecom has successfully demonstrated the application of MIMO to its tri-band CA network, thereby securing the capability to provide 900 Mbps data speeds.

With the application of 4X4 MIMO – a technology that doubles the transmission speed – to a 20-MHz bandwidth of a frequency band, users will be able to download data at maximum rate of 400 Mbps per frequency band.

SK Telecom and Samsung Electronics are demonstrating this LTE-A Pro technology at Mobile World Congress, and plan to commercialize it within the first half of 2017.

"Through the demonstration of LTE-A Pro with SK Telecom, we have proven that it is not long before we realize the commercialization of 1 Gbps mobile communication, a dream speed in LTE," said Park Dong-soo, Executive Vice President of the Network Business at Samsung Electronics.