South Korea launched the world’s first nationwide 5G mobile networks. Until now, no mobile networks have offered nationwide 5G access. Three top telecom providers—SK Telecom, KT, and LG Uplus—began their 5G services two days early despite previously announcing the launch date would be April 5.
About:
5G is the 5th generation mobile network.
It will take much larger role than previous mobile network generations (1G, 2G, 3G, and 4G)
1G delivered analog voice.
2G introduced digital voice (e.g., CDMA).
3G brought mobile data (e.g., CDMA2000).
4G LTE ushered in the era of mobile Internet.
5G vs 4G:
Supports new services: While 4G LTE focused on delivering much faster only, 5G also support new services such as mission-critical communications and Internet of Things (IoT).
5G uses spectrum better than 4G: 5G will also get the most out of every bit of spectrum — from low bands below 1 GHz to high bands known as millimetre-wave.
5G is faster than 4G: 5G will be delivering up to 20 Gigabits-per-second peak data rates and 100+ Megabits-per-second average data rates.
5G has more capacity than 4G: 5G will support a 100x increase in traffic capacity and network efficiency.
5G has lower latency than 4G: 5G has the potential to deliver more instantaneous, real-time access: a 10x decrease in end-to-end latency down to 1ms.
Working:
Like 4G LTE, 5G is also OFDM-based and will operate based on the same mobile networking principles.
However, the new 5G NR (New Radio) air interface will further enhance OFDM to deliver a much higher degree of flexibility and scalability.
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