SK Telecom to strengthen LTE and LTE-A networks

SK Telecom today announced that it will build additional 1.8 GHz base stations to secure nationwide coverage for its LTE and LTE-Advanced networks by the end of this year, thereby enabling subscribers to enjoy 150 Mbps of speeds throughout the nation.

SK Telecom has already built a nationwide LTE network using 10 MHz in the 800 MHz frequency band in April, 2012, the nationwide rollout of this 20 MHz LTE will provide the company with an important edge in deploying nationwide “20 MHz (1.8GHz) + 10 MHz (800 MHz)” LTE-Advanced network that offers up to 225 Mbps of speed.

Moreover, the company also said that it gained approval to use 10 MHz bandwidth in the 2.1 GHz band for LTE. The company secured 30 MHz bandwidth in the 2.1 GHz band through a frequency auction in 2010.

With the newly added 10 MHz LTE bandwidth in the 2.1 GHz band, SK Telecom now secures LTE bandwidth in three different frequency bands – i.e. 10 MHz in 800 MHz band, 20 MHz in 1.8 GHz band and 10 MHz in 2.1 GHz band – thus moving one step closer to realizing LTE-Advanced tri-band carrier aggregation technology that supports up to 300 Mbps.

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 commercialization as soon as the supporting handsets come to market. At present, chipset that support 300Mbps of speed is being developed. Until then, SK Telecom will apply Multi Carrier technology to these 2.1 GHz base stations to relieve the burden of its existing LTE networks.

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