We will face a new world with 5G mobile telecommunication and AI (Artificial Intelligence) technologies, the core of the fourth industrial revolution. The center of the fourth industrial revolution technology must always be human, and technology must make people both beneficial and happy.
According to the Global System for Mobile communications Association (GSMA), 40 percent of the world's population will use the 5G service by 2025, and Korea, which leads 5G, will be the world's best at over 60 percent in the use rate. The commercialization of 5G and 802.11ax, which can replace wired lines through development of wireless communication technology, will have an unimaginable impact on life as all objects are connected to the Internet.
In the mobile era, individuals are satisfied with easily finding necessary information. In the IoT era, however, objects around us advice and recommend for us. It is the most important difference. The age that highly intelligent objects make advice is coming sooner than expected. According to Cisco, the number of objects connected to the Internet is expected to reach 50 billion by 2020. Nearly 10 objects will be connected to each person and about 200 objects will be connected to the Internet by 2035. A world that "everything is connected to the Internet" is just around the corner.
The technologies that change the new world are enabled by the upcoming wireless 5G and Wi-Fi 802.11ax technologies. First of all, ultra-fast speed of 5G technology is about 1,000 times faster than 4G (LTE). It is the speed at which a movie can be downloaded in just one second. The 3-D image service will be applied to VR (Virtual Reality) and AR (Augmented Reality), MR (Mixed Reality), which obtains merits of VR and AV (Audio and Video), and Hologram.
Secondly, the self-driving car, drone and remote robot control services are possible by reducing the service latency time from over 0.02 seconds(20㎳) from terminal to base station in the 4G to 0.001 second (1 ms), or one fifties in the 5G.
Thirdly, the super-connectivity of 5G technologies will advance the era of super-connections where people to people, people to things, and things to things are connected to the wireless Internet.
Wireless communication's Wi-Fi 802.11ax technology is called Wi-Fi 6 in easy terms with new standards. Mobile devices that are currently proliferating in terms of speed need to move rapidly to the cloud, and 802.11ac's Wi-Fi speed needs to be 10 times faster than 3.47Gbps to 30Gbps in order to provide a more speedier and reliable wireless Internet by accommodating numerous IoT devices.
The second is the technology that significantly improved the problem of slow or inaccessible wireless Internet access due to interference of numerous Wi-Fi devices in public places such as subways or airports in high-density wireless environments that anyone can experience. Although 802.11ac only improves the performance of 5GHz bands, 802.11ax provides performance improvements for both 2.4GHz and 5GHz bands.
Although most Wi-Fi users continue to focus on Wi-Fi at 5GHz, there are still many devices that support only 2.4GHz Wi-Fi on IoT. As a result, the performance improvement of 2.4㎓ was made at 802.11ax. Thirdly, the core technology of 802.11ax is an extension of battery life and the drastic reduction in power consumption of devices.
The world is changing faster than we can imagine owing to Information Technology (IT) and we are in the midst of the change. In the near future, AI robots could replace 60 percent of existing jobs, according to Incruit statistics. It is time to have wisdom to live a life ready for change.
By Kwon Tae-il, CEO of Bigsun Systems/Doctor of engineering(bigsun@bigsun.kr)
