5G is coming, don't know anything, this knowledge will always be useful.

I believe everyone wants to know, what is 5G? How fast is 5G technology? Why do you have the experience of the future "super-interconnected" era? Today, we will take you to 5G common sense, and learn to steal it!

1. What is 5G?
   First of all, what is 5G? Simply put, 5G is the fifth generation of communication technology.

Three major features of 5G: large bandwidth, low latency, and all things connected.

The main features of 5G: the wavelength is millimeter.

1. How fast is 5G?
   American chip maker Qualcomm believes that 5G can achieve 10 to 20 times faster browsing and download speeds under actual (rather than laboratory) conditions. In other words, you can download a high-definition movie in about 1 minute.
   And we are talking about the 5G network built on the existing 4G LTE network, just the first generation 5G modem; the future 5G chip is likely to be faster.

Independent 5G networks can operate at very high frequencies (such as 30 GHz), making it easy to achieve gigabit or higher browsing speeds. However, this scene is unlikely to appear within a few years.

3, 5G faster than 4G
At present, the fastest 4G mobile network provides a network speed of about 45Mbps (megabits per second), compared to 5G.
The 5G transmission rate will be 1Gb/s, which is more than ten times faster than the current 4G. This means that downloading a 1GB HD movie using 5G technology takes only 10 seconds to complete, and a "Big Lord" trilogy with a longer Blu-ray of more than 70 GB is about 1 minute.

5G's large bandwidth transmission capability, even if you look at 4K HD video, 360-degree panoramic video and VR virtual reality experience, there will be no Karton situation.

4, 5G can dry up
So, what can 5G do? Speaking out will really scare you.

5G will bring fiber-like "zero" delay access rate, and will increase the network energy efficiency by a hundred times, reduce the bit cost by more than 100 times, and close the distance between people and all things, and finally achieve "all things can be reached." and".
In fact, in addition to the above, 5G can bring more new business that we can't predict. For example, 5G will bring more high-definition video and higher energy efficiency to driverless cars, augmented reality AR/virtual reality VR, drone work group, etc., and make the city more intelligent Internet of Things.

In general, if you are a gamer, then with 5G, the delay between pressing the controller button and displaying the effect on the screen will be shorter. Video playback on mobile terminals is faster and more stable. Video chat quality will be clearer and smoother.

1. Is 5G radiation large?
   First of all, it can be affirmed that under the daily life scene, the 5G mobile phone will not increase the radiation of the body. Mobile phone manufacturers must go through various rigorous audits and tests before they can list new mobile phones. They need to meet relevant national standards before they can go public.
   The 5G frequency band requires a more dense base station, so the radiation is large. This understanding is misunderstood. On the contrary, the radiation from 2G to 3G to the 4G base station is getting smaller and smaller. In the 2G era, a base station is tens of kilometers apart, and a base station of a few hundred meters in a 4G radius has a larger number of base stations in the 5G era. Due to the power control, the denser the base station, the smaller the radiation.

6, 5G key wireless technology
So, what are the key wireless technologies for 5G? This involves professional knowledge, let us know.
5G key wireless technologies: large-scale antenna, ultra-dense networking, flexible duplex, full-duplex, spectrum sharing, advanced modulation and coding, terminal straight-through technology, full spectrum access, new multi-access, and new multi-carrier.

SDR: Universal hardware + software is upgradeable.

MIMO: multi-antenna transmission, multi-antenna reception + boost channel capacity.

CCFD: Simultaneously transmit and receive electromagnetic wave signals at the same frequency to improve spectrum efficiency.

OFDM: Orthogonal Frequency Division Multiplexing.

7, how much is 5G mobile phone
Since 5G mobile phones support more modes, standards, and frequency points than 4G mobile phones, new technologies such as "millimeter wave" and "MIMO multi-antenna", chips, structural components, and RF components will all bring about an increase in hardware costs.
The 5G mobile phones that are listed on the market will be placed on the high-end models, and the price is expected to be more than 5,000 yuan. Looking back at the price of 4G mobile phones, almost all the way down, the current hundred yuan machine has fully supported 4G. In the 1-2 years after 5G commercial use, the number of models will increase rapidly, and the price of 5G mobile phones will also enter the thousand yuan file.

8, 5G arrived
Most countries are unlikely to launch 5G services by 2020, but Qatar's Ooredoo said it has launched commercial services, while South Korea plans to start next year, and South Korea's three largest network operators agree to start services at the same time. China is also striving to launch 5G services in 2019.
At the same time, regulators around the world have been busy auctioning spectrum to telecommunications companies that have been experimenting with the new business with handset manufacturers.
9, 5G mobile phone arrives
In order, 5G baseband chips are required before the 5G main processor chip, and finally the 5G mobile phone.
It is expected that there will be a "trial version" mobile phone in the middle of 2019, and a "commercial machine" will be listed in the second half of the year, that is, everyone can buy a real 5G mobile phone. It is expected that after full commercial use in 2020, 5G mobile phone brands and models will gradually become more abundant.

1. What brands are there for 5G mobile phones?
   Vivo, OPPO, Huawei, glory, Xiaomi and other "head brands" will be the first to launch 5G mobile phone terminals. As for which one will go first, it depends on which mobile phone brand support and closeness, and also the progress of product layout planning, maturity and mass production. The first-out is not representative of the R&D strength.
   In addition, only 5G chip research and development capabilities are only Qualcomm, Huawei, MTK MediaTek, Zhan Rui, Intel and other small chip manufacturers, the right to speak at the time of the market is concentrated in these chip vendors.

iPhone (Intel baseband): 5G will not be supported next year, and the replacement will wait until 2020

Huawei (Huawei baseband): The first 5G mobile phone is expected to be released in the first quarter of 2019

Samsung, Xiaomi, OPPO, vivo, Moto (Qualcomm baseband): the flagship product can be seen in the first half of 2019

It’s about 2019, the era of technological change, if you still don’t know 5G? That can't be said. Therefore, the basic knowledge of 5G compiled above, everyone should understand!