Wireless network

1. Introduction
• Wireless is use electromagnetic waves to
communicate.
• Run faster than wired and DSL services today.
• No wires
• Convenience
• flexible

2. 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.

3. Common examples of
wireless
• Cellular phones and pagers
• Cordless computer peripherals
• Global Positioning System(GPS)

4. 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”.

5. .
• 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.

6. .
• In 1990, the IEEE 802 Executive Committee
established the 802.11 Working Group to
create a wireless local area network (WLAN)
standard.

7. 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.

8. .
• 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.

9. .
• 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.

10. .
• 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.

11. .

12. 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.

13. 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.