WiFi technology originated from the decision of the United States Federal Communications Commission (FCC, 1985) to open up several bands of the wireless spectrum for use without a government license. These strips have already been used for all kinds of equipment such as microwave ovens. To operate at these frequencies, devices must use spread spectrum technology. Thanks to this technology, the radio signal spreads over a wider frequency range, making the signal less susceptible to interference and difficult to intercept.
Do you know everything about Wi-Fi?The practice of our work in the field of providing services for configuring and installing wireless networks shows that the vast majority of people simply do not know what Wi-Fi or a wireless network really is. We very often communicate with clients and acquaintances, and all the time they have to explain that Wi-Fi is not really the Internet, but a trademark saying that by buying equipment with a Wi-Fi sticker we are purchasing a certified product that has no problems will work with the same wireless devices.
Scope of applicationIn most cases, wireless networks (using access points and routers) are built commercially to attract revenue from customers and tenants. Employees of Get Wi-Fi have experience in the preparation and implementation of the following projects for the implementation of network infrastructure based on wireless solutions:
WiFi and InternetThe term WiFi was coined by the WiFi Alliance (WiFi Alliance also known as the "Wireless Ethernet Compatibility Alliance" - WECA). Initially, the term sounded "IEEE 802.11b-compliant", but the WiFi Alliance decided that the name was too long and difficult to remember. The term WiFi was not deciphered in any way and had only a name consonant with Hi-Fi for consumers. Later, WiFi came to stand for Wireless Fidelity - wireless fidelity.
Most likely, the secret of this delusion lies in the initially incorrect advertising campaign of suppliers of equipment and platforms equipped with wireless Wi-Fi modules. Throughout history, there have been enough massive advertising campaigns, after which it turned out that people called everything that was associated with the advertised product by its name. A clear example is Xerox. Until now, all copiers (no matter what company they are) are called "copiers".
Much the same thing happened with Wi-Fi networks. At first, there were no Internet providers that used wireless networks to provide Internet access to their customers, although manufacturers and dealers promoted their products under such slogans as "Mobile Internet Wi-Fi in your laptop", etc. On the one hand , this is a valid expression, since if, for example, you have the Internet at home and an access point is installed, then you will still receive the mobile Internet. But if you look from the other side, it turns out that buying a laptop with a Wi-Fi sticker does not guarantee you access to the Internet anywhere.
Now, of course, this is no longer there, but it is clearly fixed in the minds of consumers that Wi-Fi is the Internet. And so it happens: when people learn about our field of activity, the response follows: "Oh, class, I just need to connect to Wi-Fi!" (implying the need to connect to the Internet).
Find out once and for all what Wi-Fi is!In this article, we will try to tell you in simple terms what wireless Wi-Fi networks are and how they work.
First, about the Wi-Fi equipment itself. Today there are a large number of companies that produce wireless equipment. The main types of devices are Access Point and Wireless Router, in other words, a multifunctional access point.
On the other hand, there are quite a few companies that make really good devices with stable firmware. During my work, I had to face and test different devices, and if we take the class of equipment for building small corporate networks as an example, then we can list several reliable manufacturers: Cisco-Linksys, Asus. True, you should not rush and buy equipment with the logos of these companies. To get started, read and study what they write about the device you need (unfortunately, reliable manufacturers also have "mistakes"), or contact the professionals.
As a result, a Wi-Fi access point is just a device, and in order to get exactly the Internet via Wi-Fi, you first need to connect to some provider and only then install wireless equipment on this connection. In this case, you will have wireless Internet access. If you have a lot of networks displayed on your laptop at home, then most likely these are the networks of your neighbors who have already connected to the Internet through a cable provider and installed Wi-Fi equipment.
There are also providers who build Wi-Fi networks by installing wireless access points on their local networks and thus provide Internet access to their customers.
Now, when it is already more or less clear what Wi-Fi equipment is, it is possible, without going too deep into the technical side, to talk about how it all works.A radio module is installed in the access point, which performs the functions of receiving and transmitting data. The same module is installed in a computer or laptop. These modules are manufactured by different companies based on different chips. The Wi-Fi standard was adopted specifically to ensure that Wi-Fi equipment from different manufacturers was compatible with each other. Those. so that when you see the Wi-Fi sticker on the box from the access point, you can be sure that it will work with your laptop.
After that, a cable from the Internet provider is connected to the access point, and the corresponding equipment and computer are configured. As a result, you get access to the Internet, only not through a cable, but through a Wi-Fi network. It turns out that the access point or router serves as some kind of wireless "gateway" between your computer and the provider.
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