What is WiFi? How does WiFi work?

WiFi is a term that gets thrown around a lot, but what does it mean?

WiFi is a form of local area networking and wireless Internet access used by people around the world to connect their devices to the Internet without cables.

This article will help you understand what WiFi means, how it works, and some other useful information.

What does WiFi stand for?

WiFi is often thought to stand for Wireless Fidelity, but in fact the term WiFi was created as a result of an effort to find a catchier name for the newly invented wireless technology, IEEE 802.11b Direct Sequence, which is still used today.

According to Wikipedia and some other sources, the term WiFi has no meaning. It is simply a name created by the branding consultancy, Interbrand, after contracting with the WiFi Alliance, to name their new wireless technology, and is not a shortened form of Wireless Fidelity.

There is, however, an explanation for the misconception about what WiFi stands for. The misconception arose because of the advertising slogan used by the WiFi Alliance shortly after the name WiFi was adopted: “The Standard for Wireless Fidelity.”

Next, let's move on to the definition of this term.

What is WiFi?

WiFi is a networking technology that allows you to connect to the Internet wirelessly . It is also known as 802.11, which is the IEEE standard for wireless local area networks (WLAN) .

WiFi networks operate in the unlicensed 2.4GHz and 5GHz frequency bands, which means they don't interfere with other nearby wireless networks operating on the same frequencies (or bandwidth).

How does WiFi work?

Modern WiFi networks work just like wired Ethernet local area networks (LANs) . The only difference is that they use unlicensed spectrum frequencies to transmit data over short distances at high speeds, much like mobile broadband does for cell phones.

The WiFi standard was developed by the Society of Electrical and Electronics Engineers (IEEE) to provide wireless access in a local area, typically within a home or office building.

For WiFi to work, there must be an access point (base station) with a wired connection to connect WiFi devices. WiFi devices communicate with the access point using radio frequency (RF) signals, just like a cordless phone.

Types of WiFi connections

Your home wireless options are growing as cellular networks expand into the realm of home Internet. Like Internet service, each type of wireless connection has its pros and cons, such as speed and signal strength. Here are some of the different types of WiFi connections.

Line/router

Most homes today use a wireless router to access the Internet. The advantages include ease of setup, mobility within the range of the WiFi access point (router), and the ability to connect multiple devices. The disadvantages include limited bandwidth and reduced speeds due to multiple devices connected to the same WiFi network, as well as potential interference from other electromagnetic devices in the home.

Mobile hotspot or jetpack

Mobile and dedicated hotspots are becoming a more popular way to stay connected securely on the go. Two popular hotspot devices are smartphones and jetpacks. Almost any smartphone or tablet can be used as a temporary hotspot these days, and are a great option if you need it occasionally. It’s easy to use and doesn’t require any additional equipment, but it can drain your battery and data pretty quickly.

The jetpack, on the other hand, acts as a dedicated mobile hotspot, picking up signals from cell towers in your area just like a smartphone. More devices can connect to it, and the WiFi range it provides is also greater. And since it’s a separate device, your smartphone’s battery won’t be affected. The downside is that you have to buy the jetpack and a separate pack.

LTE Home Internet

If you live in a rural area where Internet options are limited, 4G LTE Home Internet is worth considering. It offers high-speed Internet service delivered via cell towers and cellular networks, with average download speeds of around 25Mbps. The advantage of LTE over satellite is better speed and reliability, depending on your service provider.

5G Home Internet

5G Home Internet (Fixed Wireless Access) is now available in more places across the country. Even with multiple connected devices, it is reliable and fast enough to power your entire home. Fixed wireless access has a simple plug-and-play setup, meaning no messy wiring and no need to wait for a technician to come to your home to set it up.

Some popular WiFi connection standards

Technically, WiFi signals operate by sending and receiving data at frequencies of 2.5GHz to 5GHz, which is much higher than the frequencies of mobile phones, radios, etc. Therefore, WiFi signals can contain a lot of data but are limited in transmission range - distance. What about other types of waves, although low in frequency, can be transmitted over very long distances???

Wifi waves use the 802.11 connection standard in the IEEE (Institute of Electrical and Electronics Engineers) library , this standard includes 4 smaller standards: a/b/g/n. (You often see these symbols on modems and routers)

• The 802.11b standard is the weakest version, operating at 2.4GHz and can handle up to 11 megabits per second .
• The 802.11g standard is slightly better than the b standard , although it also operates at 2.4GHz frequency , it can handle 54 megabits per second.
• The 802.11a standard transmits at a higher frequency of 5GHz and has a processing speed of 54 megabits per second .
• Finally, there is the 802.11n standard , which operates at 2.4GHz but has a processing speed of up to 300 megabits per second .

How is WiFi used?

WiFi provides a wireless alternative to wired networks for sharing data between devices in the same building or area, such as laptops and smartphones connected to an Internet router to share files.

WiFi also replaces the cable that runs from your computer directly to your router or Internet modem, allowing you to access the Internet via WiFi through WiFi Hotspots.

What is WiFi Hotspot?

A WiFi Hotspot is a location with a wireless Internet access signal, usually free of charge. You can often find these hotspots in cafes or restaurants that provide internet services for the convenience of customers.

WiFi networks are also found in airports, hotels, and other public spaces where they are provided for the convenience of customers. Some WiFi hotspots are provided by WiFi providers that allow you to connect for a fee, while others are free WiFi connections.

WiFi has become an important element in our lives. In this article, Quantrimang.com has presented the basic knowledge about WiFi and how it works. Hopefully you have got the necessary information!

Good luck!

See more articles below:

• How to view saved Wifi passwords on Windows 7/8/10
• How to use Command Prompt to manage wireless networks on Windows 10?
• When you find someone using your Wifi for free, follow these steps to stop them: