---
title: 5G/6G Network Infrastructure
type: technology
url: "https://www.envisioning.com/research/substrate/south-korea__5g-6g-network-infrastructure"
hub: substrate
summary: "Korea launched the world's first commercial 5G network in 2019 and now leads 6G research with Samsung, SK Telecom, and KAIST targeting 2030 commercialization and terahertz frequency bands."
---

# 5G/6G Network Infrastructure

Korea launched the world's first commercial 5G network in 2019 and now leads 6G research with Samsung, SK Telecom, and KAIST targeting 2030 commercialization and terahertz frequency bands.
- Technology Readiness Level: 8/9
- Impact: 4/5
- Investment: 4/5
South Korea became the first country to launch commercial 5G services in April 2019, and by 2025 has over 30 million 5G subscribers — roughly 60% of its mobile user base. SK Telecom, KT, and LG Uplus operate dense 5G networks with coverage across all major cities. Samsung Networks is a global 5G equipment supplier, competing with Ericsson, Nokia, and Huawei.

Korea's 5G deployment serves as a national testbed for applications that other countries are still theorizing about: cloud gaming, AR navigation, smart factory connectivity, autonomous vehicle communication, and real-time holographic calls. The high subscriber density provides Korean companies with real-world data and usage patterns that inform next-generation network design.

The 6G research program, coordinated by the Ministry of Science and ICT, targets 2030 commercialization with peak data rates of 1 Tbps (50x faster than 5G), sub-millisecond latency, and support for holographic communication. Samsung Research has demonstrated sub-terahertz wireless links, and KAIST is developing 6G-native AI architectures. Korea aims to set international 6G standards, as it did for 5G, leveraging first-mover deployment to influence global specifications.

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Source: Envisioning — Technology Research Institute (https://www.envisioning.com/research/substrate/south-korea__5g-6g-network-infrastructure)