Overview of SK Telecom
SK Telecom (SKT) is South Korea's largest mobile operator. In April 2019 it was the first operator to open a commercial 5G network. SKT is known for network technology and for putting AI into operator services.
For IoT, SKT connects devices over LoRa, LTE-M, NB-IoT, and 5G. Products such as T map and the NUGU assistant already use that connectivity. The AIX strategy treats AI and IoT as one line of development.
SK Telecom facts
- Founded: 1984
- Headquarters: Seoul, South Korea
- Users: About 31 million in South Korea (about 50% market share)
- Network: 4G LTE, 5G NR, NB-IoT, LTE-M, LoRa
- Milestone: First commercial 5G service, in 2019
- Parent: SK Group
Core Technical Capabilities
First commercial 5G
Commercial 5G opened on 3 April 2019, so SK Telecom has a long record of running a 5G network
AI platform NUGU
The in-house NUGU assistant controls IoT devices, including smart-home gear, by voice
Nationwide LoRa network
A nationwide LoRa network in South Korea, for places cellular IoT does not reach
Quantum-safe links
Quantum key distribution on the 5G network, used to protect IoT data
IoT products
IoT network services
ThingPlug platform
- Device access and management
- Data collection and analysis
- Rule Engine
- Developer API
5G private networks
- A dedicated 5G network for a factory
- MEC at the edge
- Network slicing services
- Ultra-low latency control
Network standards and coverage
| Technology | Band | Coverage | Role |
|---|---|---|---|
| 4G LTE | 800/1800/2100MHz | Nationwide in South Korea | Primary network |
| LoRa | 900MHz | Nationwide in South Korea | Low-cost sensors |
| NB-IoT | 800MHz | Major cities and expanding | Ultra-low power consumption |
| LTE-M | 1800MHz | Nationwide coverage | Mobile IoT devices |
| 5G NR | 3.5GHz/28GHz | Large-scale coverage in major cities | Used first for industrial IoT |
Industry Solutions
Semiconductor manufacturing
- Ultra-clean room 5G private network
- AI analysis of yield
- Predictive maintenance of equipment
- Machine-vision inspection
Smart city
- A city data platform with AI
- Traffic-flow optimization
- Public-safety monitoring
- Energy management
Drones and autonomy
- 5G drone management
- Autonomous-driving tests
- Port automation
- Remote control of robots
Media
- 5G AR/VR live streaming
- Immersive sports viewing
- Metaverse platform
- Cloud gaming services
Competitive Advantages
- 5G: The earliest commercial 5G network, with a long record of 5G IoT
- LoRa: A nationwide LoRa network, a lower-cost option for IoT
- AI: The NUGU platform is tied into IoT control
- Quantum security: Quantum encryption on the mobile network, for IoT traffic
- Manufacturing: Used by Korean manufacturers including Samsung, Hyundai, and LG
Development History and Milestones
SK Telecom was established in 1984, initially operating as Korea Mobile Telecom, and was renamed SK Telecom and integrated into the SK Group in 1994. In 1999, SKT was the first in the world to commercialize CDMA2000 1x EV-DO high-speed mobile data service, establishing its position as a technology leader. In 2011, SKT was the first in Korea to commercially launch an LTE network, once again leading the way.
Key milestones in the Internet of Things (IoT) field: In 2016, SKT built a nationwide LoRa LPWA network in Korea, becoming one of the first operators in the world to establish a national LoRa network; on April 3, 2019, SKT officially launched the world's first commercial 5G network service; in the same year, SKT applied Quantum Key Distribution (QKD) technology to 5G network security, becoming the world's first operator to commercialize quantum encryption for mobile networks; in 2021, SKT announced the spin-off of its semiconductor and ICT businesses to focus on core business areas such as AIoT (AI + IoT) and media.
ThingPlug
ThingPlug is SK Telecom's IoT open platform, built on the international standard oneM2M protocol, supporting full-process IoT services including device access, data collection, rule processing, and application development. The platform provides standardized APIs, allowing developers to quickly build IoT applications, and also supports data integration with third-party cloud platforms (such as AWS and Azure). ThingPlug has verified its stability and scalability in multiple fields, including smart cities, environmental monitoring, and industrial equipment management.
Support
Enterprise 5G Services
- 5G private network planning and consulting
- MEC edge node deployment
- Network slicing configuration
- An SLA
IoT platform support
- ThingPlug development documentation
- Developer test account
- IoT architecture consultation
- AI model integration support
Security services
- Quantum encrypted communication
- IoT device security authentication
- Network anomaly detection
- Data compliance consulting