SK Telecom on Monday took another step towards rolling out 300-Mbps LTE-A after it received permission to use additional frequencies for three-band carrier aggregation (CA).
The operator plans to combine 10 MHz of 800-MHz spectrum with 20 MHz of 1800-MHz spectrum and 10 MHz of 2.1-GHz spectrum.
It has already launched LTE-A using 10 MHz each of 800-MHz and 1800-MHz spectrum. In November it was given permission to add a further 10 MHz of 1800-MHz spectrum into the mix, bringing the maximum speed of its LTE-A network up to 225 Mbps. On Monday it got the green light for using the 2.1-GHz band as well.
"SK Telecom will begin building base stations for LTE in the 2.1-GHz band in the second quarter of 2014, making the network available for commercialisation as soon as the supporting handsets come to market," said the company, in an official statement.
In addition, SK Telecom said it plans to build additional 1800-MHz base stations in a bid to reach nationwide coverage for both its LTE and LTE-A networks by the end of this year.
SK Telecom in 2013 became the first operator in the world to commercially deploy LTE-A carrier aggregation and it is keen to stay ahead of the game. At next week's Mobile World Congress in Barcelona, it will demonstrate three-band CA using 20 MHz per carrier, which is capable of peak speeds of 450 Mbps.