4G has not been built yet, why do we need 5G?
4G has not been built yet, why do we need 5G? What kind of experience can it bring?
Starting from a live broadcast of the game
July 8, 2018, Moscow Luzhniki Stadium, Russia World Cup finals.
You are not on the scene, you are on a business trip, holding a tablet to watch the live broadcast.
However, you don't look like watching a live broadcast, it's a bit like playing a PS live football game. You use your finger to swipe on the screen, and the live screen changes as your finger moves.
This is called a personalized experience of live sports events, as long as you move your finger, you can enjoy watching the game from any angle.
The traditional live view depends on the angle of a single broadcast lens, and the audience on the screen is very passive. If your favorite star is not in good shape during the game, you rarely see him. If you suddenly score a goal, you can only see the carnival of the goal hero, but can not see the frustrated expression of the defending player.
With this personalized service, how to watch the game is entirely up to you.
This is because a large number of high-definition cameras are installed around the stadium. These cameras are all connected to the 5G network. Massive video signals are transmitted from the distant Moscow to your tablet through the 5G network, perfect for an absolutely 360-degree view without dead ends.
This is by no means an unrealistic fantasy of the individual. In fact, I believe that 5G will definitely break out in a major international event, just like a young star. It became famous in the World Cup and it is famous. This explosion may be 2020. The Tokyo Olympics may also be advanced, such as the 2018 Moscow World Cup. . . . . .
What is 5G?
You may have this question, isn't it more than installing a few cameras to connect to the network? Can 4G not be realized? Why do you want 5G?
To answer this question, let's first take a look at how communication big cattle design 5G networks? The two figures below clearly show the definition and goals of 5G.
You are not engaged in communication, maybe you don't understand.
Simply put, 3G and 4G are designed to connect with humans, while 5G is designed to connect everything. 4G network will care about your online video is not clear? The flow is not smooth? But I don't care how to use my mobile phone to control my smart door handles, smart refrigerators, etc., and 5G is very concerned.
In order to connect everything, the network must be redesigned and optimized in three ways: capacity, speed, and latency.
According to the prediction of authoritative organizations, by 2020, 5G networks will need to accommodate 200 billion class equipment or machines. Just three smart cities, intelligent transportation and industrial automation will need to connect nearly 30 billion devices. With so many devices inrush, the network capacity must be infinite, and the rate must be high enough. Only in this way can the network be highly reliable. The connection person and the connection machine can be different. People can always be patient. The speed is slow, I am patient, etc. The signal is not good. I am looking for a mountain phone. The machine can not have such good patience. I can’t brush the red envelope because of the Spring Festival. Too much, traffic surges and the intelligent traffic in the entire city is rampant!
To ensure high network reliability, the network delay must be optimized. The 4G network is a 10ms network delay, and the 5G network is a 1ms end-to-end network delay. 10ms and 1ms, this difference is not felt when you go online, but the machine is different. We say that traffic accidents happen between one mind. If your driverless car response speed is 10ms, how many traffic accidents can you imagine?
What is driving 5G?
Smartphones are driving the rapid development of 3G and 4G networks. So, who will be the biggest push behind 5G? Just as no one expected the driving force of a smartphone so much, the biggest push behind 5G is hard to predict.
However, one thing is certain, 5G networks will extend the range of smartphones (or tablets) to more complex and broader applications. For example, smartphones connect smart homes, drones, robots or driverless, and these applications will be realized within five years.
The 5G network truly realizes the malleability, versatility and efficiency of the network. Although we can't predict who will be the biggest pusher of 5G networks, can we imagine what 5G will drive?
Take popular wearable devices as an example. The device is too small, which limits its computing power. If you rely on a high-speed, low-latency 5G network, the wearable device connects to the cloud service system through the 5G network. After the computing processing function is completed in the cloud, it is transmitted back to the wearable device. This provides a great product for the terminal product. Product design space and application design space. Maybe a smart watch only needs a display screen!
With the advancement of information technology, such imagination will be further expanded.
Moore's Law tells us that when the price is constant, the number of components that can be accommodated on an integrated circuit will double every 18-24 months, and performance will double.
Benefiting from Moore's Law, the 5G era will achieve an unprecedented level of convergence between communications and computing technologies.
Give another example. Wireless communication In theory, the more antennas, the higher the spectral efficiency and transmission reliability. Massive MIMO technology (multi-antenna technology) is recognized as one of the key technologies of 5G. In fact, 4G also uses multi-antenna technology, however, multi-antenna technology is limited by the size and cost of mobile terminals. However, as more and more components can be accommodated on an integrated circuit, the price becomes cheaper and cheaper, and it becomes easier to implement. Looking at the picture below, the 16 antennas can already be integrated in 5 mm.
In short, 5G will be a brand new wireless era, bringing unlimited imagination to human digital life, and even, it will add a new dimension to the whole world!
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