Introduction

• Wireless is use electromagnetic waves to communicate.

• Run faster than wired and DSL services today.

• No wires

• Convenience

• flexible

Wireless can be

Fixed wireless

• Mobile wireless

• Portable wireless

IR wireless

• IR(infrared) radiation : An infrastructure wireless network uses an access point (also known as a wireless router) that provides a secure and flexible connection.

Common examples of wireless

• Cellular phones and pagers

• Cordless computer peripherals

• Global Positioning System(GPS)

History of wireless network and Network devices

• Heinrich Herz discovered and first produced radio waves in 1888 and by 1894 the modern way to send a message over telegraph wires was first conducted.

• Marconi sent and received signals up to two miles using radio waves. Marconi became known as the “father of radio”.

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• During World War II, the United States Army first used radio signals for data transmission.

• This inspired a group of researchers in 1971 at the University of Hawaii to create the first packet based radio communications network called ALOHNET.

• This first WLAN consisted of 7 computers that communicated in a bi-directional star topology.

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• In 1990, the IEEE 802 Executive Committee established the 802.11 Working Group to create a wireless local area network (WLAN) standard.

The equipment

• Internet Connection – You must have an internet connection in order to use wireless on your laptop or desktop computer.

• Computer – Of course you must have a laptop, desktop, or some other computer device like a tablet in order to take advantage of your wireless equipment.

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• Wireless Router –It will connect to your DSL modem, your Cable modem, or any other Internet connection equipment you might have.

• Wireless Adapter – You need a wireless adapter in your laptop, your desktop or any other device that is going to connect to your wireless router.

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• Wireless Antennas- Access points and routers often utilize a Wi-Fi wireless antenna that significantly increase the communication range of the wireless radio signal. These antennas are optional and removable on most equipment.

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• Wireless Repeaters- A wireless repeater connects to a router or access point. Often called signal boosters or range expanders, repeaters serve as a two-way relay station for wireless radio signals, helping clients otherwise unable to receive a network's wireless signal to join.

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Pros of wireless Internet Technology

• Wireless internet provides super fast broadband speed with no wires and cables.

• Lot of computers can be attached at the same time with the help of router.

• Initial costs to the service provider too are reduced as they do not have to lay out expensive cables or pay highly for satellite transmission.

• Mobility supports productivity.

• Wireless solutions can provide users with access to real time information from more places in their organization.

Cones of wireless Internet Technology

• The technology can be unpredictable

• There are large chances of disturbance of wireless traffic and hacking up your connection

• Your neighbors can steal your intent off by sharing it and your connection becomes slowly hacked.