WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS ...

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Nov 21, 2013 (3 years and 11 months ago)

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2006 by Prentice Hall

9

Chapter


The Wireless
Revolution


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2006 by Prentice Hall


Identify the principal wireless transmission media
and devices, cellular network standards and
generations, and standards for mobile Web
access



Describe the major standards for wireless
networks and for wireless Internet access



Evaluate the role of m
-
commerce in business and
describe the most important m
-
commerce
applications

Management Information Systems

Chapter 9
The Wireless Revolution

OBJECTIVES

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2006 by Prentice Hall


Assess the business value of wireless technology
and describe important wireless applications in
business




Identify and describe the challenges posed by
wireless technology and management solutions

OBJECTIVES (Continued)

Management Information Systems

Chapter 9
The Wireless Revolution

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Challenge:

provide Internet access and services to
thousands of patrons in an historic one million square
foot building


Solution:
Develop 802.11b (Wi
-
Fi) network with 70
access points providing Internet access to patrons
using wireless laptops and PDAs


Extend wireless network to adjacent park and to
library staff to enhance service levels


Illustrates the importance of wireless networking to
service customers at reasonable costs

Management Information Systems

Chapter 9
The Wireless Revolution

Boston Public Library Case

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The Wireless Revolution


Mobile phones have become mobile platforms for
delivering digital data, used for recording and
downloading photos, video and music, Internet
access, and transmitting payments.



An array of technologies provides high
-
speed
wireless access to the Internet for PCs and other
wireless handheld devices and cell phones.



Businesses increasingly use wireless to cut costs,
increase flexibility, and create new products and
services.

THE WIRELESS COMPUTING LANDSCAPE


Management Information Systems

Chapter 9
The Wireless Revolution

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Wireless communication helps businesses easily
stay in touch with customers, suppliers, and
employees.



Wireless networking increases worker
productivity and output, as workers take less time
to establish contact with people and to access
information.

THE WIRELESS COMPUTING LANDSCAPE


Business Value of Wireless Networking

Management Information Systems

Chapter 9
The Wireless Revolution

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THE WIRELESS COMPUTING LANDSCAPE



Companies can save on wiring offices, moving,
and making network changes by using wireless
networks.



Wireless technology has also been the source of
new products, services, and sales channels in a
variety of industries, e.g. OnStar, Starbucks “hot
spots”.

Management Information Systems

Chapter 9
The Wireless Revolution

Business Value of Wireless Networking (Continued)

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Microwave systems transmit high
-
frequency
radio signals through the atmosphere.



Communication satellites are used for
geographically dispersed organizations.

THE WIRELESS COMPUTING LANDSCAPE


Wireless Transmission Media and Devices

Management Information Systems

Chapter 9
The Wireless Revolution

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THE WIRELESS COMPUTING LANDSCAPE


Devices for Wireless Transmission:


Paging systems



E
-
mail handhelds



Cellular telephones



Personal Digital Assistants (PDAs)



Smart phones

Management Information Systems

Chapter 9
The Wireless Revolution

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THE WIRELESS COMPUTING LANDSCAPE


Standards:



Global System for Mobile Communication (GSM)



Code Division Multiple Access (CDMA)

Cellular Network Standards and Generations

Management Information Systems

Chapter 9
The Wireless Revolution

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THE WIRELESS COMPUTING LANDSCAPE


Cellular Generations:


1G:

Analog cellular networks for voice
communication



2G:

Digital wireless networks, primarily for voice
communication; limited data transmission
capability

Management Information Systems

Chapter 9
The Wireless Revolution

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THE WIRELESS COMPUTING LANDSCAPE



2.5G:

Interim step toward 3G in the United States



3G:

High
-
speed; mobile; supports video and
other rich media; always
-
on transmission for e
-
mail, Web browsing, instant messaging

Management Information Systems

Chapter 9
The Wireless Revolution

Cellular Generations: (Continued)

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THE WIRELESS COMPUTING LANDSCAPE


Mobile Wireless Standards for Web Access


Wireless Application Protocol (WAP):

Uses Wireless
Markup Language (WML) and microbrowsers



I
-
mode:

Uses compact HTML and allows for
continuous connection

Management Information Systems

Chapter 9
The Wireless Revolution

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Wireless Application Protocol (WAP) versus I
-
mode

THE WIRELESS COMPUTING LANDSCAPE


Figure 9
-
4

Management Information Systems

Chapter 9
The Wireless Revolution

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WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS

The Institute of Electrical and Electronics Engineers (IEEE)
established a hierarchy of complementary standards for
wireless computer networks.

Global Wireless Network Standards:


IEEE 802.15 (Bluetooth) for the Personal Area
Network (PAN)



IEEE 802.11 (Wi
-
Fi) for the Local Area Network
(LAN)

Management Information Systems

Chapter 9
The Wireless Revolution

Table 9
-
2

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WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS


IEEE 802.16 (WiMax) for the Metropolitan Area
Network (MAN)



IEEE 802.20 (proposed) standard for the Wide
Area Network (WAN)

Management Information Systems

Chapter 9
The Wireless Revolution

Table 9
-
2 (Continued)

Global Wireless Network Standards: (Continued)

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WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS

Bluetooth


Can link up to 8 devices in 10
-
m area



Low power requirements

Management Information Systems

Chapter 9
The Wireless Revolution

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WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS

Wi
-
Fi


Three standards:

802.11a, 802.11b, 802.11g



Infrastructure mode:

Devices use access point to
communicate with wired network



Ad
-
hoc mode (peer
-
to
-
peer):

Wireless devices
communicate directly with each other

Management Information Systems

Chapter 9
The Wireless Revolution

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A Bluetooth Network (PAN)

WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS

Figure 9
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Management Information Systems

Chapter 9
The Wireless Revolution

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An 802.11 Wireless LAN

WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS

Figure 9
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Management Information Systems

Chapter 9
The Wireless Revolution

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M
-
COMMERCE AND MOBILE COMPUTING


M
-
commerce:

The use of the Internet for
purchasing goods and services and also for
transmitting messages using wireless mobile
devices



Mobile computing:

Enables internet
-
enabled cell
phones, PDAs, and other wireless computing
devices to access digital information on the
Internet from any location

Management Information Systems

Chapter 9
The Wireless Revolution

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Global M
-
Commerce Revenue, 2000

2005

M
-
COMMERCE AND MOBILE COMPUTING

Figure 9
-
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Management Information Systems

Chapter 9
The Wireless Revolution

Source:
Copyright 2005 Jupitermedia
Corporation. All rights reserved.

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M
-
COMMERCE AND MOBILE COMPUTING

M
-
Commerce Services and Applications


Information
-
based services:

Instant messaging,
e
-
mail, searching for a movie or restaurant using
a cell phone or handheld PDA



Transaction
-
based services:

Purchasing stocks,
concert tickets, music, or games; searching for
the best price for an item using a cell phone and
buying it in a physical store or on the Web

Management Information Systems

Chapter 9
The Wireless Revolution

Table 9
-
3

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M
-
COMMERCE AND MOBILE COMPUTING


Personalized services:
Services that anticipate
what a customer wants based on that person’s
location or data profile, such as updated airline
flight information or beaming coupons for nearby
restaurants

Management Information Systems

Chapter 9
The Wireless Revolution

M
-
Commerce Services and Applications (Continued)

Table 9
-
3 (Continued)

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M
-
COMMERCE AND MOBILE COMPUTING

Digital Payment Systems and M
-
Commerce


Micropayment system

o
Individual service providers run their own
separate payment systems

o
Small payments added on to single bill



Mobile Wallets (m
-
Wallets):

Store personal data to
use in online transactions

Management Information Systems

Chapter 9
The Wireless Revolution

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M
-
COMMERCE AND MOBILE COMPUTING

M
-
Commerce Challenges


Slow data transfer speeds on second
-
generation
cellular networks, resulting in higher costs to
customer



Limited memory and power supplies



Management Information Systems

Chapter 9
The Wireless Revolution

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M
-
COMMERCE AND MOBILE COMPUTING


More Web sites need to be designed specifically
for small wireless devices.



Keyboards and screens on cell phones are still
tiny and awkward to use.

Management Information Systems

Chapter 9
The Wireless Revolution

M
-
Commerce Challenges (Continued)

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WIRELESS TECHNOLOGY IN THE ENTERPRISE

Wireless Applications for Customer Relationship
Management



Access customer account records and
information at any time or location


Management Information Systems

Chapter 9
The Wireless Revolution

Wireless CRM enables sales and field service
professionals to:

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Update customer accounts and deal information
to update customer database instantaneously



Receive alerts to important events



Enter, perform, and update transactions and
product information

WIRELESS TECHNOLOGY IN THE ENTERPRISE

Management Information Systems

Chapter 9
The Wireless Revolution

Wireless Applications for Customer Relationship
Management (Continued)

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Wireless Supply Chain Management (SCM) and Radio
Frequency Identification (RFID)


Wireless supply chain management systems:
Provide simultaneous accurate information about
demand, supply, production, and logistics as
goods move among supply chain partners




Radio Frequency Identification (RFID) systems:

Provide a powerful technology for tracking the
movement of goods throughout the supply chain

WIRELESS TECHNOLOGY IN THE ENTERPRISE

Management Information Systems

Chapter 9
The Wireless Revolution

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How RFID Works

WIRELESS TECHNOLOGY IN THE ENTERPRISE

Figure 9
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Management Information Systems

Chapter 9
The Wireless Revolution

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Wireless Applications:


Electronic Medical Record (EMR) retrieval



Wireless note taking for patient charts



Lab test results



Prescription generation



Medical databases

WIRELESS TECHNOLOGY IN THE ENTERPRISE

Wireless in Health Care


Management Information Systems

Chapter 9
The Wireless Revolution

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MANAGEMENT OPPORTUNITIES, CHALLENGES, AND SOLUTIONS

Management Opportunities:

Wireless technology offers:



Flexible business processes



Business processes not limited by time or space



New channel for communicating with client



Source of new products and services

Management Information Systems

Chapter 9
The Wireless Revolution

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MANAGEMENT OPPORTUNITIES, CHALLENGES, AND SOLUTIONS

Management Challenges:


Integrating wireless technology into the firm’s IT
infrastructure




Maintaining security and privacy



Management Information Systems

Chapter 9
The Wireless Revolution

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MANAGEMENT OPPORTUNITIES, CHALLENGES, AND SOLUTIONS

Solution Guidelines:


Identifying areas in which wireless can provide
value



Creating a management framework for wireless
technology



Using a pilot program before full
-
scale rollout of
wireless systems


Management Information Systems

Chapter 9
The Wireless Revolution

The following are some of the guidelines for managing
mobile technology in the enterprise: