What is a WiFi Technology & How Does It Work?

Wi-Fi is a popular wireless networking technology. Wi-Fi stands for “wireless fidelity”. Wi-Fi was invented by NCR Corporation/AT&T in the Netherlands in 1991. By using this technology we can exchange information between two or more devices. Wi-Fi has been developed for mobile computing devices, such as laptops, but it is now extensively using for mobile applications and consumer electronics like televisions, DVD players, and digital cameras. There should be two possibilities in communicating with the Wi-Fi connection that may be through an access point to the client connection or client to client connection. Wi-Fi is one type of wireless technology. It is commonly called a wireless LAN (local area network). WiFi technology allows local area networks to operate without cable and wiring. It is making a popular choice for home and business networks. A computer’s wireless adaptor transfers the data into a radio signal and transfers the data into an antenna for users.

WiFi Technology Working Principle

Wi-Fi is a high-speed internet connection and network connection without the use of any cables or wires. The wireless network is operating three essential elements that are radio signals, antenna, and router. The radio waves are keys that make Wi-Fi networking possible. The computers and cell phones are ready with Wi-Fi cards. Wi-Fi compatibility has been using a new creation to constituent within the ground connected with community network


WIFI Technology
WIFI Technology

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The actual broadcast is connected in sequence in fact it is completed by way of stereo system surf as well as the worth of wires with the monitor to classification prone. Wi-Fi allows the person in order to get access to the web any place in the actually provided area. You can now generate a system within Resorts, library, schools, colleges, campus, personal institutes, as well as espresso stores as well as on the open public spot to help to make your company much more lucrative as well as interact with their own customer whenever.

Wi-Fi compatibility can make surf with stare to the company using their inspiring cable television much a smaller amount force down. The radio signals are transmitted from antennas and routers that signals are picked up by Wi-Fi receivers, such as computers and cell phones that are ready with Wi-Fi cards. Whenever the computer receives the signals within the range of 100-150 feet for the router it connects the device immediately.

The range of the Wi-Fi is depended upon the environment, indoor or outdoor ranges. The Wi-Fi cards will read the signals and create an internet connection between the user and the network. The speed of the device using Wi-Fi connection increases as the computer gets closer to the main source and the speed is decreased the computer gets further away.

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WI-FI Connections
WI-FI Connections

Many new laptops, mobile phones have inbuilt Wi-Fi cards you don’t have to do anything which is one of the best things. If it is a free-based type of network connection the user will be prompted with a login id and password. The free base network connections also well in some areas. The Wi-Fi network connection is creating hot spots in the cities. The hot spots are a connection point of the Wi-Fi network. It is a small box that is hardwired into the internet. There are many Wi-Fi hot spots available in public places like restaurants, airports, and hotels offices, universities, etc.

Security

Security is an important element in Wi-Fi technology. Security is our personal decision but having a wireless connection we should pay attention to protect our private details. We can connect easily to unsecured wireless routers. The problem is anyone is connected to your wireless router using the data like download games, download apps and planning terrorist activities, shirring illegal music and movie files, etc. So it is necessary to provide security to the wireless technologies based devices.

How to Make the Security?

All routers have a web page that you can connect to configuring the Wi-Fi security. And turn on WEP (Wired Equivalence Privacy) and enter a password and remember this password. Next time when you will connect your laptop Wi-Fi router will ask you to enter the connection password and you enter that password.

What is a Wireless Router?

A wireless router is one kind of hardware device which is commonly used in homes. It is the heart of the wireless network. This device is mainly used by the providers of internet service to connect their internet cable. Sometimes, it is also called a WLAN device (wireless local area network). A wireless network is also named a WiFi network.

The main function of this router is to unite the network functions of a router and a wireless access point. Similar to a network based on wire, the hub is a middle location where all the computers are connected to it for providing network access to computers. At present, the wireless hubs which are available will work like routers but these are gateways.

WiFi Router for Desktop

The most common method for users to unite to the Internet wirelessly is possible with a desktop Wi-Fi router. These routers are small in size and look like boxes including an antenna. This device broadcasts the signal at the workplace or home. When the user is far away from the base WiFi router then the signal will be weak. So several wireless routers like range extenders are arranged in the workplace. The range extender of Wi-Fi is located in an array to boost otherwise expand the coverage of the Internet.

What is a Mobile Hotspot/WiFi Hotspot?

In every smartphone, a mobile hotspot is a normal feature. Once the hotspot in the mobile phone is turned ON then the mobile operator can share the network connection wirelessly through other devices to allow the Internet. A handy wifi hotspot is a mobile hotspot that is attained throughout a carrier of the cell phone. It is a portable device that uses cellular towers to broadcast signals.

The different devices like laptops, iPods can be connected wirelessly toward the device which connects toward the Internet wherever you travel. Like a smartphone, the monthly cost of the moveable hotspot depends on the usage of the data plan you choose. This kind of hotspot is more consistent to allow the Internet by searching for stationary public WiFi hotspots.

Types of WiFi Technologies

Currently, they are the four major types of WIFI technologies.

  • Wi-Fi-802.11a
  • Wi-Fi-802.11b
  • Wi-Fi-802.11g
  • Wi-Fi-802.11n

802.11a is one of a series of wireless technology. That defines the format and structure of the radio signals sent out by WI-FI networking routers and antennas.

Wi-Fi-802.11b

802.11b is one of a series of wireless technology. 802. 11b support bandwidth 11mbps. The signal in the unregulated frequency spectrum around 2.4 GHz. This is a low frequency compared with Wi-Fi-802.11a means it is working a reasonable distance. It is interference with micro owns cordless phones and other appliances.  It is low-cost; the signal range is good using the home appliances.

Wi-Fi-802.11g

In 2002 and 2003, This Technology supporting newer slandered products. It is the best technology of 802.11a and 802.11b. The 802.11 b support bandwidth upto 54mbps and it use a 2.4 GHz frequency for greater range. This cost is more than 802.11b. It is fast accessing and maximum speed.

Wi-Fi-802.11n

The 802.11n is the newest WIFI technology. It was designed to improve on 802.11g.The amount of bandwidth supported by utilizing multiple wireless signals and antennas instead of one. It supports 100 Mbps bandwidth and increased signal intensity.

Elements of Wi-Fi

The elements of wifi include the following.

Wireless Access Point

A wireless access point is used to allow wireless devices for connecting to the wireless network. A wireless network like Cisco will make the new devices easy by bringing them online & provides good support for mobile users. The function of the wireless access point in the network is similar to the function of an amplifier within a home stereo.

An access point uses the bandwidth to stretch so that several devices can travel on the network from a far distance. However, a wireless access point gives very useful data regarding the devices over the network to provide security as well as used for practical purposes.

WiFi Cards

These cards allow the wireless signal as well as the information of the relay that can be internal or external. Wifi cards are also known as adapters

Safeguards

Firewalls as well as protect networks like antivirus software’s from uninvited users and keeps the information secure.

Limitations of WiFi

The limitations of WiFi include the following.

  • Range is limited
  • Interference from other devices like microwave ovens, telephones, etc
  • Power consumption is high
  • Risks of data security

WiFi Technology Advantages & Disadvantages

The advantages of WiFi technology include the following.

  • A wireless laptop can be moved from one place to another place
  • Wi-Fi network communication devices without wire can reduce the cost of wires.
  • Wi-Fi setup and configuration is easy than the cabling process
  • It is completely safe and it will not interfere with any network
  • We can also connect internet via hot spots
  • We can connect internet wirelessly

The disadvantages of WiFi technology include the following.

  • Wi-Fi generates radiations which can harm the human health
  • We must disconnect the Wi-Fi connection whenever we are not using the server
  • There are some limits to transfer the data, we cant able to transfer the data for long-distance
  • Wi-Fi implementation is very expensive when compared to the wired connection

Applications of WiFi Technology

The applications of WiFi include the following.

  • Mobile applications
  • Business applications
  • Home applications
  • Computerized application
  • Automotive segment
  • Browsing internet
  • Video conference

Thus, this is all about an overview of WiFi technology. WiFi technology is simple as well as a cost-effective method for connecting to the internet without using wires. Day by day it is enhancing due to the reducing cost as well as the freedom it provides to the users. Here is a question for you, what is LiFi?

10 Comments

  1. http://mywifiext.local says:

    very nice post, i certainly love this website, carry on it

  2. vigneshwaran says:

    Super sir. Nice.
    Do you have any WhatsApp no. For contact in case of doubt sir.

  3. shama parween says:

    sir, how can I prepare for the wifi technology in interview questions

  4. Sir, I have a doubt, Can someone hack a WiFi even if the security system is modified to provide internet access only to registered MAC address?

  5. sazzeb sam says:

    Please Sir

    can have project material on Wifi Working Principle Types and Application

  6. N.kasthuri says:

    it’ s very helpfull in this topic

    1. Tarun Agarwal says:

      Hi Kasthuri,

      Thank you for your appreciation. It really helps us to work hard.

      Suvarna (Mobile: +91 9959178000)

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