Page 137 - DCAP307_PLANNING_AND_MANAGING_IT_INFRASTRUCTURE

Unit 7: Wireless Networks

7.5 Summary Notes

 Wireless communication is the transfer of information over a distance without the use of
electrical conductors or wires.

 Wireless communications encompasses various types of fixed, mobile, and portable two
way radios, cellular telephones, Personal Digital Assistants (PDAs) and wireless networking.

 Cellular systems provide two-way voice and data communication with regional, national,
or international coverage.
 Analog cellular services were introduced by AT&T in the 1970s and became widespread in
the 1980s. The primary analog service in the United States is called AMPS (Advanced
Mobile Phone Service).

 Wi-Fi, developed on IEEE 802.11 standards, is widely used technology advancement in
wireless communication.
 Wi-Fi is quicker than the conventional modem for accessing information over a large
network.
 Wi-Max technology is a telecommunications technology that offers transmission of wireless
data via a number of transmission methods; such as portable or fully mobile internet
access via point-to multipoints links.
 Wi-Max (802.16) technology often misinterpreted by the people by the names of mobile
Wi-MAX, 802.16d, fixed Wi-MAX and 802.16e.

7.6 Keywords

Communication Satellite: A communication satellite is an artificial satellite used specifically as
a communication transmitter/receiver in orbit.
Fixed Wi-Max: The fixed wi-max serves the stationary and pedestrian classes.
IR Wireless Communication: IR wireless communication communicates data or information in
devices or systems through infrared (IR) radiation.
Microwave Transmission: Microwave transmission involves the transfer of voice and data
through the atmosphere as super high-frequency radio waves called microwaves.

Mobile Wi-Max: A mobile wi-max network access system is one that can address the vehicular
class.
Wi-Fi: “Wi-Fi” is a type of wireless networking protocol that allows devices to communicate
without cords or cables.
Wi-Max: Wi-Max is based on IEEE 802.16 standards which is a telecommunications technology
that offers transmission of wireless data via a number of transmission methods.

Wireless Communication: Wireless communication is the transfer of information over a distance
without the use of electrical conductors or wires.

7.7 Review Questions

1. Explain the concept of wireless communication with examples. Also discuss the different
types of wireless communication.
2. Describe the use of cell phone services in wireless communication.

LOVELY PROFESSIONAL UNIVERSITY 131