Ch09 Wireless Revolution

8/3/2019 Ch09 Wireless Revolution

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9.1 2006 by Prentice Hall

9Chapter

The WirelessThe Wireless

RevolutionRevolution

The WirelessThe Wireless

RevolutionRevolution


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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 SystemsManagement Information SystemsChapter 9Chapter 9 The Wireless RevolutionThe Wireless Revolution

OBJECTIVES


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Challenge:provide Internet access and services tothousands of patrons in an historic one million squarefoot building

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

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

Illustrates the importance of wireless networking toservice customers at reasonable costs


Boston Public Library Case


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The Wireless RevolutionThe Wireless Revolution

Mobile phones have become mobile platforms for

delivering digital data, used for recording and

downloading photos, video and music, Internetaccess, 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



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Mobile Versus Fixed-line Subscribers Worldwide

Figure 9-1



Source: International TelecommunicationsUnion, 2002 and 2003, and authors.


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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.


Business Value of Wireless NetworkingBusiness Value of Wireless Networking



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Companies can save on wiring offices, moving,

and making network changes by using wirelessnetworks.

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.


Business Value of Wireless Networking (Continued)


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All wireless media rely on various parts of the

electromagnetic spectrum.

Microwave systems transmit high-frequency

radio signals through the atmosphere.

Communication satellites are used for

geographically dispersed organizations.


Wireless Transmission Media and DevicesWireless Transmission Media and Devices



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Frequency Ranges for Communications Media and

Devices


Figure 9-2



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Amocos Satellite Transmission System


Figure 9-3



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Devices for Wireless Transmission:

Paging systems

E-mail handhelds

Cellular telephones

Personal Digital Assistants (PDAs)

Smart phones



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Standards:

Global System for Mobile Communication (GSM)

Code Division Multiple Access (CDMA)

Cellular Network Standards and GenerationsCellular Network Standards and Generations



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Cellular Generations:

1G: Analog cellular networks for voicecommunication

2G: Digital wireless networks, primarily for voice

communication; limited data transmission

capability



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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


Cellular Generations: (Continued)


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Mobile Wireless Standards for Web Access

Wireless Application Protocol (WAP): Uses WirelessMarkup Language (WML) and microbrowsers

I-mode: Uses compact HTML and allows for

continuous connection



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Wireless Application Protocol (WAP) versus I-mode


Figure 9-4



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WIRELESS COMPUTER NETWORKS AND INTERNET ACCESS

The Institute of Electrical and Electronics Engineers (IEEE)The Institute of Electrical and Electronics Engineers (IEEE)

established a hierarchy of complementary standards forestablished a hierarchy of complementary standards for

wireless computer networks.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)


Table 9-2


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IEEE 802.16 (WiMax) for the Metropolitan AreaNetwork (MAN)

IEEE 802.20 (proposed) standard for the WideArea Network (WAN)


Table 9-2 (Continued)

Global Wireless Network Standards: (Continued)


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Bluetooth

Can link up to 8 devices in 10-m area

Low power requirements



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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



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A Bluetooth Network (PAN)


Figure 9-5



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An 802.11 Wireless LAN


Figure 9-6



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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 mobiledevices

Mobile computing: Enables internet-enabled cell

phones, PDAs, and other wireless computingdevices to access digital information on the

Internet from any location



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Global M-Commerce Revenue, 20002005


Figure 9-7


Source: Copyright 2005 Jupitermedia

Corporation. All rights reserved.


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M-Commerce Services and Applications

Information-based services: Instant messaging,

e-mail, searching for a movie or restaurant usinga cell phone or handheld PDA

Transaction-based services: Purchasing stocks,

concert tickets, music, or games; searching forthe best price for an item using a cell phone and

buying it in a physical store or on the Web


Table 9-3


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Personalized services: Services that anticipatewhat a customer wants based on that persons

location or data profile, such as updated airline

flight information or beaming coupons for nearby

restaurants


M-Commerce Services and Applications (Continued)

Table 9-3 (Continued)


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Customer Personalization with the Ubiquitous Internet


Figure 9-8



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Accessing Information from the Wireless Web

Wireless portals: Content and services optimized

for smaller screens of mobile devices to steerusers to the information they are most likely to

need

Voice portals: Accept voice commands foraccessing Web content, e-mail, and other

electronic applications from a cell phone or

standard telephone



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Digital Payment Systems and M-Commerce

Micropayment system

o Individual service providers run their own

separate payment systemso Small payments added on to single bill

Stored payment system

o Cell phone equipped with smart card storingrechargeable electronic cash

Mobile Wallets (m-Wallets): Store personal data touse in online transactions



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M-Commerce Challenges

Slow data transfer speeds on second-generation

cellular networks, resulting in higher costs to

customer

Limited memory and power supplies



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WIRELESS TECHNOLOGY IN THE ENTERPRISE

Wireless Applications for Customer RelationshipWireless Applications for Customer Relationship

ManagementManagement

Access customer account records and

information at any time or location


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 Applications for Customer Relationship

Management (Continued)


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Pitney Bowess Wireless CRM System


Figure 9-9



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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




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How RFID Works


Figure 9-10



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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 in Health CareWireless in Health Care



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Wireless Sensor Networks and Pervasive Computing

Wireless sensor networks (WSNs): Networks ofinterconnected wireless devices that are

embedded into the physical environment to

provide measurements of many points over large

spaces




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Pervasive computing: Wireless technologies are

pushing computing into every facet of life,

including cars, homes, office buildings, tools and

factories; providing connections anywhere and

anytime.



Wireless Sensor Networks and Pervasive Computing

(Continued)


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A Wireless Sensor Network


Figure 9-11


Source: From Jason Hill , Mike Horton, Ralph King, and Lakshman Krishnamurthy, The Platforms Enabling Wireless SensorNetworks, Communications of the ACM 47, no. 6 (June 2004).


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MANAGEMENT OPPORTUNITIES, CHALLENGES, AND SOLUTIONS

Management Opportunities: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



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9 44 2006 by Prentice Hall

MANAGEMENT OPPORTUNITIES, CHALLENGES, AND SOLUTIONS

Solution Guidelines: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


The following are some of the guidelines for managing

mobile technology in the enterprise:

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Ch09 Wireless Revolution

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