WiFi will be replaced in the future, what do you think?

WIFI is really going to be replaced! But it's not 5G, it's the new LiFi technology: as long as there is light, there is a signal

Recently, there has been a 5G craze in China again. Both mobile phone manufacturers and network operators are ready to go. Although we are still mainly using 4G networks, with the upcoming 5G networks, many netizens are wondering whether WiFi will be replaced by 5G networks in the future.

On the surface, 5G network is not only much faster than 4G network, but also much faster than WiFi. It is reported that the download speed in 5G network environment can reach several G per second, far exceeding the current 4G network and WiFi. Indeed, judging from the gorgeous data of 5G network, it is just around the corner to replace WiFi. But in fact, for consumers, although 5G has a great advantage in network speed, the current high traffic usage fees may not make many people interested in 5G network. Everyone will still choose WiFi network as much as possible.

However, in addition to 5G networks, last year, a US company called LightPointe announced a blockbuster technology: LiFi (visible light wireless communication) technology, which is also the first time that LiFi (visible light wireless communication) technology has appeared in people's vision. LiFi (visible light wireless communication) is the abbreviation of Light Fidelity, referred to as "light fidelity technology". This is a new wireless transmission technology that uses visible light spectrum (such as light emitted by LED bulbs) to transmit data. The working principle of LiFi is to use the visible light spectrum (such as light emitted by bulbs) for data transmission. The new wireless transmission technology, visible light is the emission source in the entire information transmission system, and the controller is used to control the on and off of the light source, so as to control the information transmission between the terminal receivers. This technology was first created by German physicist Professor Harald Hass.

Simply put, "Light Fidelity Technology" uses the already installed equipment (ubiquitous LED lights) and implants chips in LED bulbs to form a device similar to a WiFi hotspot (AP), allowing consumers to join the network anytime and anywhere. According to laboratory data, LiFI's maximum transmission speed reaches 100GB, which is not only nearly 100 times faster than WIFI's transmission rate, but also much faster than 5G networks. The speed is stronger and the signal connection will be better, which is also the most unique advantage of the current LIFi technology core. With the further maturity of the technology, it may replace WiFi in the next few years and become people's new Internet tool.

Although LiFI is a new network transmission medium that uses light for transmission, it does not require network cables or routers, which is relatively more convenient and more stable. This new technology can be used wherever there is light. However, LiFI also has a fatal flaw. Since it needs light to transmit, it must be used in places with light, and the brightness of the light will also affect the normal transmission of LiFi, causing signal deterioration and slow transmission rate. It is not as flexible as WiFi technology, which can penetrate walls or other substances. This is also the most fatal flaw of this new WiFi technology.

Summary: LiFi has two major advantages over WiFi: strong security and fast speed. However, LiFi technology is not mature enough: it is not suitable for two-way information transmission, has weak anti-interference ability, communication distance, lacks relatively mature chips, and interferes with the environment (blocking light sources), etc. On the whole, LiFi technology is indeed a better data transmission technology than WiFi, but this emerging technology is not particularly perfect at present, which is one of the reasons that limit its full promotion. Although from the current point of view, LiFi technology does have many shortcomings, I believe that in the near future, this superior transmission speed and safe and environmentally friendly performance will completely change our lives, and popularizing or even replacing WiFi may only be a matter of time.