Wi-Fi basic knowledge learning

What's a WiFi?

Simply put, WiFi is connected to each other. At home, WiFi can be shared with mobile phones, computers, players and other devices-no cables are needed. Whether you're in an office, an airport or a café, you can work from WiFi to Internet anytime, even if you're far away from home. Now you can imagine that everything will be simple and convenient, and no longer need to worry about finding a wired network. This is wifi.

How does WiFi work?

WiFi network delivers secure, reliable, and fast wireless connectivity through 802.11 wireless technologies. WiFi networks are available for electronic devices and electronic devices, the Internet, and wired network connections using Ethernet technology. WiFi networks work on 2.4 and 5G two frequencies, and some WiFi devices can use two bands simultaneously (dual band). The real experience of WiFi networks is similar to that of wired networks.

is WiFi tailor-made for me?

Large companies and schools use enterprise-class information technology and WiFi-certified products to extend standard wired networks to public areas, such as conference rooms, training rooms, and large auditorium halls. Many companies also provide wireless networks at home or in remote offices for employees who work outdoors or are working from a distance. Large companies and schools often use WiFi to achieve interconnection between buildings.

Small companies also use WiFi networks to communicate with their mobile office salespeople, fixed office workers, investors behind them, and financial staff.

Home Office has benefited from WiFi technology. Working at home is very comfortable, you can only have a simple access point for computers, printers, scanners, functional mobile phones, audio devices and other wireless devices are interconnected, so your desk will not have a variety of cables below.

WiFi Technology

Today WiFi products can do everything from sending mail to transmitting video and conference calls. Can even connect 100 feet of wireless network, of course, the connection distance will be reduced because of the lobby block. A variety of shapes and forms of WiFi products can meet all your needs, some even very cheap.

WiFi can come today is the result of the concerted efforts of countless companies, technicians and engineers. In the 90, experts from many companies worked together through the International Federation of IEEE, to develop new industry standards for the mutual connectivity of new wireless products. The Wi-Fi Alliance was born from this partnership and has a worldwide development test lab that detects whether products meet availability and safety standards.

Band

WiFi products work through radio waves, like mobile phones, sensor doors, televisions, radios, GPS and microwaves. Each radio wave product has a frequency band for the corresponding spectrum.

Examples of wireless bandwidth

AM Broadcast (530-1610 kHz)

HF frequency band (5.9-26.1 MHz)

Private Band (26.965-27.405 MHz)

TV channel 2-6 (54-88 MHz)

FM Radio frequency band (88-108 MHz)

Wi-Fi (2.4GHz or 5GHz)

WiFi products work at 2.4GHZ or 5GHZ bands. These bands are not authorized by the Government, individuals can be used free of charge, unlike television and radio must use the authorized frequency band. It is because of the free WiFi band that ensuring the availability of the product through the WiFi Alliance is more important to the manufacturer. Because these products and non-WiFi products share frequency bands, such as remote control toys, certification tests to ensure that the WiFi products will not interfere with other products, but also will not be interfered with other products.

Availability of

Availability means that products from different companies can work together, so users are not limited to one brand of WiFi products. WiFi for more than 400 WiFi affiliate companies means you have a large selection of products to choose from, without worrying about the compatibility of the products.