The Koreans once again stood in the spotlight.
In early July, South Korea's largest mobile operator SK Telecom President He Chengyu announced that he will launch the fifth generation (5G) mobile communication at the PyeongChang Winter Olympics in South Korea in 2018, and strive to be the first commercial 5G in the world in 2020.
This announcement is somewhat bold. Although research institutions and groups including the European Union, China, Japan, and the United States generally predict that 2020 will be the time node for 5G commercial use, so far, 5G has not yet formed a molding technology or standard, but a vague concept.
Only half a year ago, Chairman of China Mobile, Guo Guohua, also conservatively predicted that it would take at least 10 years for the 5G to go from concept to commercial scale, that is, 2024. At least four years away from South Korea.
South Korea is the first 4G service in the world, with the world's highest 4G penetration rate and ARPU value. In May of last year, South Korea's Samsung demonstrated 5G to achieve a transmission speed of more than 1 Gbps per second and a communication coverage distance of up to 2 kilometers in a UHF bandwidth of 28 GHz (gih, communication frequency unit).
This result caused a sensation. Samsung and South Korea behind it are considered to be the strongest creators of 5G.
But this achievement has recently been refreshed by Ericsson. In the early July, Ericsson 5G Lab staff demonstrated the quasi-5G technology in real-time in the wireless environment, achieving a throughput rate of 5 Gbps per second on the 15 GHz spectrum, witnessed by NTT DOCOMO, the largest operator in Japan, and SK Telecom executives in South Korea.
This rate is five times that of Samsung, which is 250 times faster than the current 4G LTE network speed. This means that if you use 5G, you can even download five HD movies in one second.
More and more countries, operators and equipment vendors have joined the war. ZTE recently proposed the Pre 5G concept, that is, some technologies in 5G can be directly applied to 4G, and even without changing the air interface standard, it can be realized directly by using 4G terminals. This allows the user to get a user experience similar to 5G in advance.
The 5G business schedule is likely to move forward at any time.
5G core
The 5G rate is comparable to fiber, but this is not the full meaning of 5G.
A general expectation for 5G speed is that after the technology matures, it needs to support a data rate of about 10 Gbps. In urban and suburban environments, rates above 100 Mbps should generally be reached, and should be at least a few Mbps in any other location, including remote rural and deep indoor environments.
However, 5G's service target will not only be limited to connecting people, but tens of billions of low-cost devices and sensors will be connected to this network. From home appliances to medical devices, from roads to fields, 5G networks will support anything. The connection between them. Such a vision and goal requires 5G networks to meet more complex access needs, such as ultra-high traffic density, ultra-high connection density and ultra-low latency.
In addition, to manage these interconnected things, 5G still needs to achieve a hundred times lower bit cost reduction. According to estimates, 5G can support 1000 times the current traffic, and the traffic demand will also increase significantly. If wireless networks want to carry so much traffic in a reasonably priced and sustainable way, the cost per bit and energy consumption is much lower than it is today.
Ultra-high-speed, versatile network service capabilities and ultra-low deployment costs can be considered as the ultimate goal of 5G networks. All roads lead to Rome. Around these three goals, different manufacturers, research institutions and countries are studying and proposing technical paths and forming mature technical standards as soon as possible.
The EU-led 5G PPP, China's IMT-2020, South Korea's 5G Forum and Japan's 2020 and Beyond AdHoc are stepping up the process. The members of the 5G research organizations led by these countries and regions generally include national organization partners, market representative partners, and individual members with operators and equipment vendors as the main members. In the next step, these national or regional standards, if they are to be promoted globally, need to submit technical standards proposals to the ITU (ITU) to compete for international standards.
An international standard requires at least two years from submission to approval as a standard, and it needs to be continuously maintained and improved in the next three to five years. Being approved as an international standard requires recognition from 189 countries and more than 600 industrial organizations and numerous manufacturers.
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