April 5, 2019
South Korea launches commercial 5G NR
South Korean carriers opened commercial 5G NR service nationwide on April 5, 2019 — the first large-scale rollout of fifth-generation cellular data.
What it was for
5G NR targets gigabit-class peak speeds, lower latency, and denser small-cell deployment — assumptions behind cloud gaming on phones, ARAugmented reality — overlaying digital graphics on the real world through a camera view. prototypes, and edge compute experiments. SK Telecom, KT, and LG Uplus beat rival launch clocks by days, but the lasting impact is a new radio generation developers benchmarkA standardized test suite for comparing systems — ImageNet, MLPerf, and SPEC define industry scoreboards. against for real-time mobile apps.
Why it's here
South Korea's April 2019 launch was the first nationwide commercial 5G NR deployment.
Why it mattered
It marked the cellular generation built for machine-to-machine and high-bandwidth mobile workloads.
What it solved
LTELong-Term Evolution — 4G cellular data standard delivering mobile broadband speeds. alone could not meet projected demand for ultra-low latency and multi-gigabit mobile traffic.
Related
- First commercial LTE networks launchDecember 14, 2009