什么是5G, 它是如何工作的英文作文400字
For most people 5g must have been heard even if they didn't understand it. But isn't the 4G era just a few years old? Is it a little early to say the next generation of wireless communication technology? It's true but time flies technology development is not waiting for people. 5g mobile communication may come to us soon. It's good to know some knowledge in advance.
Maybe you can e some business opportunities in this article. Let's start with some terms. There is no long descxxxxription of wordiness here. You can take it at ea.First let's brow a few key words with Lei Feng's IOT Technology Review: 3G:the third generation mobile communication network. If you don't want to expo your age don't admit that you have come allthe way from "my site" becau 3G was born after that era and its reprentative NOUN is HSPA or HSPA +. 4G: speaking of 4G network you must be familiar with the term LTE. In fact LTE LTE advanced and LTE advanced Pro all belong to 4G. They all have one characteristic - speed.
5g: in fact it's a term ud in the industry to describe the next generation of wireless communication network but the industry has not yet t relevant standards for it but the speed is 10 times faster than 4G. Millimeter wave: millimeter wave refers to the electromagnetic wave with the wavelength of millimeter and its frequency is generally above 6GHz. Nowadays the commonly ud frequency band below 5GHz is very crowded. Where to find new spectrum resources? All major manufacturers come up with the same idea of using millimeter wave technology. Mbps / Gbps: the two terms reprent network speed. 4G network must reach 100Mbps 5g requires 1Gbps. However the two standards have little effect on end urs becau they are only ideal values. Wireless operator: it's easy to explain. As long as it can provide wireless network it's a wireless operator. In China it's mobile Unicom and Telecom.
Spectrum: that is electromagnetic spectrum in Hertz including radio microwave VHF UHF etc. Delay: that is the propagation speed of information between two points. In the age
of 5g the delay will be further reduced (less than 1ms). Internet of things (IOT): another lo
usy term. As the name suggests IOT is the Internet connected with things. However from smart phones to refrigerators to smart bracelets to cars it will become apart of the Internet of things.
