Download PPT - CK Michael Tse

nervousripΑσφάλεια

5 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

77 εμφανίσεις

m
-
Business

Content



1. Wireless Devices

2. Wireless Internet Access

3. Wireless Web Technology

4. Software Applications for Wireless Devices

5. B2C Applications


Introduction



Wireless technology turns e
-
business into
m
-
business
, or mobile business



Current applications


Conduct online transactions


Make purchases


Trade stocks


Send e
-
mail



Future applications


A
wireless office
, where computers, phones and other
office equipment are all networked without cables



Wireless development


First
-
generation wireless technology was the cellular
phone



Second generation wireless technology, which includes
digital cellular phones, is currently in use worldwide



Third generation, or
3G

technology will enable wireless
devices to send and receive data as much as seven times
faster than a standard 56K modem



Wireless devices


Personal digital assistants (PDAs)


Digital cellular phones


Two
-
way pagers



Wireless Devices



Outside the United States, mobile phones are the
preferred medium for getting information and
making e
-
business transactions



Service is not universally available and
still
relatively expensive



Limited bandwidth restricts the amount of data
that can be sent over the wireless network



Wireless devices have significantly smaller
memory capacity and less powerful processors
than desktop computers


Wireless Devices (cont.)



m
-
Business


e
-
Business using wireless devices with Internet access



B2C marketplace


Increased conveniences for consumers


Frequent, small transactions


Receiving news, sports scores, e
-
mail, coupons and
advertisements


B2B marketplace


Salespeople can access product databases and place orders


Address customer needs immediately


Ordering and billing will be conducted remotely


m
-
Business



Code Division Multiple Access

(
CDMA
)



Each transmission is assigned a specific channel, giving
the transmission the benefit of the entire bandwidth
within that channel and reducing the possibility that a
connection will be broken


Able to assign each transmission on the network a
unique code to ensure security


Global System for Mobile Communications

(
GSM
)


Uses Time Division Multiple Access (TDMA) which
takes multiple calls and assigns each call to a different
time slot on the same radio frequency


Wireless Internet Access



3G technologies


EDGE
(Enhanced Data for GSM Evolution)


Cdma2000


W
-
CDMA


International Telecommunications Union
(ITU)


Establishes guidelines for 3G

Wireless Internet Access (cont.)



Three technologies are used to provide Web
access to wireless devices


Wireless Application Protocol (WAP)


Web Clipping


Microsoft’s Pocket Internet Explorer

Wireless Web Technology


Web clipping


Allows users to take relevant pieces of a Web site and
deliver it to a wireless device, eliminating excess content
and graphics


Palm devices use Web clipping


Proxy server



Lies between client (such as a Web browser) and Web
server


Query is received by a proxy server controlled by the
wireless ISP


Proxy server goes to the Web site and “clips” the
necessary data


The proxy server transmits the data back to your wireless device


If the proxy server does not have the information, it passes the
request to the regular server

Web Clipping


Palm VII wireless handheld computer


Query Application Builder
(
QAB
)


Web designers build
Palm Query Applications

(PQAs)
to be installed on users’ Palm handheld computers


With a PQA for a particular web site installed on the
Palm, the user can view the tailored content for that
web site



Personal Digital Assistants

Personal Digital Assistants (cont.)

Personal Digital Assistants (cont.)


Wireless Application Protocol
(
WAP
)



Developed by Nokia, Ericsson, Motorola, etc.


A set of communication protocols designed to enable
different kinds of wireless devices to communicate and
access the Internet


Designed to standardize development across different
wireless technologies worldwide


Intended primarily for Internet
-
enabled digital phones,
pagers and other handheld devices


Uses Web sites specifically designed for wireless
handheld devices that have small screens and low
-
bandwidth constraints

WAP and WML


Wireless Markup Language (WML)


The scripting language used to create Web content to be
delivered to wireless handheld devices, based on XML


Removes “unnecessary” content from Web pages


WML tags are used to “mark up” a Web page to specify
how the page should be formatted on a wireless device


WML works with the WAP to deliver the content


Similar to HTML, but it does not require input devices


Microbrowsers


Designed with limited bandwidth and limited memory
requirements


Access the Web via the wireless Internet

WAP and WML (cont.)


How wireless Internet works:


A WAP gateway, which acts as a proxy server, receives the request,
translates it and sends it to the appropriate Internet server


Server responds by sending the requested WML document


The WAP gateway parses this document's WML (i.e., it analyzes
the WML document, checking it for correctness) and sends the
proper text to the digital phone


Deck

A WML document


Card


Consists of one user interaction, providing the WML browser with
a small, self
-
contained document for browsing



WAP and WML (cont.)

WAP and WML (cont.)


No widely accepted standard for wireless development


Developers are often required to develop multiple
applications


Microsoft Pocket Internet Explorer


Reformats complete Web pages as they are downloaded from
the Internet for display on the Pocket PC


Allows Pocket PC users to access most of the content
currently available on the Web and eliminates the need to
tailor Web content for delivery to handheld devices


PacketVideo


Specializes in wireless video technology for mobile devices



Software Applications for Wireless Devices

Software Applications for Wireless Devices (cont.)

Software Applications for Wireless Devices (cont.)

Software Applications for Wireless Devices (cont.)


Easier to install and maintain without disrupting
an office


Computers can easily be moved without having to
install a new network connection in each location


Radio Frequency WLANs

(RF WLANs)


Used to network devices at a distance


Infrared and laser WLANs



Do not require approval


Do not have the same interference issues


Can be used only for short distances

Wireless Local Area Networks


Infrared technology


More cost efficient than laser technology



Equipment has a longer lifespan


Technology is less susceptible to weather


Reliable and easy to install


The system is portable


Transceivers


Send the signal between the buildings and are linked to
the network using fiber
-
optic cable (used with infrared
technology)

Wireless Local Area Networks (cont.)


Bluetooth


A wireless technology that provides short
-
range, high
-
speed
voice and data communication between digital devices


Conceived by Ericsson in 1994


Provides up to 1 Mbps (megabits per second) of data transfer
capability between devices as much as 30 feet apart


Can also be used to create wireless offices



Bluetooth Special Interest Group


Initially comprising Ericsson, IBM, Intel, Toshiba and Nokia


Developed an open specification for the technology and to
encouraged cross
-
platform capabilities for the different
wireless devices


Bluetooth

The Bluetooth Handset


Wireless communications can be unreliable and slow,
wireless
-
device bandwidth is about one fifth of the
capabilities of a standard dial
-
up connection


General packet radio services (GPRS)



Enables devices to transmit data at speeds of up to 114 kbps



Universal mobile telecommunications standard
(UMTS)


Will offer transfer speeds of up to 2 Mbps for wireless
devices


Smart phones


Mobile phones that send and receive both voice and data
messages


Used to securely send and receive secure mobile
transactions


Wireless Communications


Location tracking


Can be used for navigation, such as GPS (Global
Positioning System) devices installed in cars


Can be used by shipping companies to track delivery
trucks, giving customers more accurate tracking
information and expected delivery time


Can also be used for targeted marketing


Go2systems.com

Location Tracking


Developed by the United States Department of Defense for
military purposes, now used in commercial devices



Standard Positioning Service (SPS)


Precise Positioning Service (PPS)


Uses satellites to track a user’s position (vertical and
horizontal), velocity and the time in their location


Six circular orbits (four satellites per orbit), five ground
stations and three antennas



Triangulation


Three (of four) satellites are used to determine the latitude,
longitude and altitude of the receiver, the fourth satellite is
used to check for errors in the triangulation


Global Positioning System (GPS)


Decreasing cost and size of wireless phones and
mobile devices


Improving technology


Increasing number of devices made wireless


Increased venture capitalist interest in wireless
technology



Future of Wireless Internet


Combination of all features of
a mobile phone,
PDA and two
-
way pager



Camera for video telephony and photography


Make calls from anywhere in the world



Send and receive e
-
mail in real
-
time, without
having to dial into a service provider



Maintain your address book, schedules, to
-
do lists,
etc.


Built
-
in GPS System

Ultimate Wireless Device

Business
-
to
-
Consumer (B2C) Applications


Mobile devices


News, scores, e
-
mail


Micropayments
: small transactions


Accenture’s
Mobile Micropayments


B2C Applications (cont.)

Wireless micropayment demonstration


Web shopping saves time and money


Web retail models


Shopping
-
cart model


Auction model


Price
-
comparison model


Electronic Retail


Amazon.com


buy.com


snaz.com

(wireless)


Wireless ticket purchases and gate transactions


Bluetooth and Infrared

Retail


Concise text
-
only versions


ABCNews.com



Daily headlines and section browsing


Dotcomscoop.com




Latest dot
-
com developments

Wireless News Services


Wireless gaming


Charged per game or through advertising


Sports teams


Scores and updates


Fantasy games


Downloadable e
-
books

Entertainment


Air Travel


Internet sites aggregate airline information, fill seats


E
-
tickets lower overhead costs


American Airlines


Travelocity.com


All travel arrangements in single visit


Offers wireless services on Palm


Navigation on Wireless Devices


Find restaurants, hospitals, police stations


Driving directions, maps


GPS: Global Positioning System


Travel

Travel (cont.)

American Airlines wireless home page.

Banking and Financial Services


Investing options


Full
-
service brokers
: online trading with broker’s advice


Merrill Lynch


Salomon Smith Barney


Discount
-
brokerage service
: investors manage own
accounts and research


E*Trade


Wireless banking and trading


Fidelity’s

InstantBroker
: monitor market and portfolios
on wireless device


National Discount Brokers
: stock alerts, monitor market
and stock management



Online trading considerations


User issues


Time


Knowledge on investing


Service issues


Type of investments


Navigation tools


Customer service


Number of trades and fees


Learning tools


The Motley Fool
: financial information site


Money.com
: financial strategies

Banking and Financial Services (cont.)

Banking and Financial Services (cont.)

Placing a stock order through NDB’s Mobility.

Viewing your profile via Mobile E*Trade.


Banking and Financial Services (cont.)


Wireless insurance


Progressive Causality Insurance Company
: finding
agents and getting price quotes


Wireless real estate


check additional listings, review amenities and submit
bids while viewing a property with a client



Other Applications


e
-
Business & e
-
Commerce for Managers
, H.M. Deitel, P.J.
Deitel and K. Steinbuhler, Prentice Hall, 2000.



eBusiness Essentials: Technology and Network Requirements
for Mobile and Online Markets
, 2/e, by Mark Norris and
Steve West, John Wiley & Sons, 2001.



Main References