WIRELESS

NETWORKS

What Are Wireless Networks ?

A wireless network is any type of COMPUTER NETWORK that uses wireless data connections for connecting NETWORK NODES. You can also connect to internet through wireless media while you are away from home or office through wireless internet access.

SatelliteWi-Fi

Wi-Max Mobile Connection

InfraredRadio

Microwaves

TYPES..

Slide 4

Satellites..

Satellites are microwave relay stations

suspended in space. They are positioned in geosynchronous

orbits. Satellites use microwave signals to

transmit data to and from earth-based

microwave relay stations.

WI-MAX.. Wi-Max stand for WORLDWIDE

INTEROPERABILITY FOR MICROWAVE ACCESS, is a wireless technology to access the internet

at a very high speed. Wi-Max uses radio signals or microwaves links to transmit data

from one computer to another.

In case of mobile internet connection, the computing device is not continuously connected with base or central network. Instead you use mobile phone towers to access the internet on the go. There are 4 types of mobile connection 1G < 2G < 3G < 4G.

Mobile Connections

Infrared..

Infrared is a wireless transmission

medium that carries data via light beams.

Transmitter and receiver must be in line

of sight.An IrDA port is needed to use infrared

with a computer.

Slide 9

Radio.. Radio is a wireless transmission medium that

carries data via radio frequency signals. Wireless LANs in a home or business are one

type of radio technology. Radio signals can be long range (between

cities or regions) and short range (within a building).

Slide

Microwaves Microwaves are high-frequency radio waves.

Much of long-distance telephone service is carried

by microwaves. Microwaves travel in a straight line.

Microwave relay stations are built about 30 miles

apart.

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