28GHz has a wide spectrum but short distance, while 3.5GHz is the opposite. The two companies will build tech to utilise both, in order to increase data transfer rates and distances.
The two will also build tech to widen the coverage of 28GHz mmWave spectrum.
SK Telecom said these developments will help augmented reality, UHD videos, and autonomous vehicles services deploy seamlessly.
The South Korean telecommunications carrier was the first to announce its preferred bidders for 5G equipment; it chose Samsung, Nokia and Ericsson while excluding Huawei. Later, compatriot KT also chose the three companies, while LG Uplus included the Chinese vendors.
5G will unlock the potential of artificial intelligence, Samsung's network boss says, and the South Korean tech giant will invest $22 billion in the next-generation network to secure 20 percent market share by 2020.