Looking back at the era when it was still the Big Brother, it seems like yesterday. Time passed too quickly, and the speed of technological development was too fast. When the Big Brother faded away from history, the era of feature phones led by Nokia emerged. Speaking of Nokia, we should all be familiar with it. In the 3G era, it was the era of smartphones led by Apple phones. In the era of smartphones, the development speed of communication technology was even faster. In a few years, communication networks developed from 3G to 4G and rapidly popularized, but the flow of 4G had just decreased, and 5G networks came again. So what is the 5G network? What's the difference?

If there is any difference, the biggest difference is that the speed is faster, which is the most intuitive and obvious difference we feel. Another difference is that 5G network is the foundation of the Internet of Things. 5G network is not only faster than 4G network, but also has more devices to connect to. Let's take routers as an example. Nowadays, routers can generally only connect to more than 200 devices, and 5G routers will be much more than this number. Of course, this is just an analogy. The real 5G network connected devices mainly refer to the devices connected to 5G base stations, such as smartphones, smartwatches, and even car networks.

But there has always been a problem that troubles everyone, even though 4G networks are fast, there are still frequent problems of no signal in elevators. As soon as you enter the elevator, you basically say goodbye to the network and phone, as if the whole world is clean. We also rarely see anyone in elevators who can keep making phone calls or play with their phones. Can 5G networks solve this problem? I think it is really possible to solve it, as there is a theoretical basis for it.

Firstly, the base stations of 5G networks are no longer large ones in the past, but many small ones. Basically, there is a small base station every 250 meters, and the previous large base stations only had a maximum of a dozen or so antennas, while these small base stations would have hundreds of antennas. Therefore, the density and number of antennas have increased by hundreds of times compared to the past, with the aim of achieving the interconnection of everything and being connected at all times. Therefore, even in a closed elevator, we can still connect to 5G signals, truly achieving uninterrupted network connection.