Transcript ppt

M - Commerce
20042512
Mi Yul Park
Table of Contents
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Introduction
Attributes of M-Commerce
Examples
M-commerce: Hardware
M-commerce: Software
M-commerce: Protocol
WAP
Limitation
Q&A
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Mobile Commerce
• Mobile commerce (m-commerce,
m-business): the use of Mobile
Devices, such as Mobile phones, PDA,
in order to communicate, inform,
transact using text and data via
connections to public and private
Networks.
• Creates opportunity to deliver new services
to existing customers and to attract new
ones
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M-Commerce: Generations
• 1G: 1979-1992 wireless technology
• 2G: current wireless technology;
mainly accommodates text
• 2.5G: interim technology
accommodates graphics
• 3G: 3rd generation technology (20012005) supports rich media (video
clips)
• 4G: will provide faster multimedia
display (2006-2010)
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Terminology and Standards
• GPS: Satellite-based Global Positioning
System
• PDA: Personal Digital Assistant—handheld
wireless computer
• SMS: Short Message Service
• EMS: Enhanced Messaging Service
• MMS: Multimedia Messaging Service
• WAP: Wireless Application Protocol
• Smart phones: Internet-enabled cell
phones with attached applications
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Attributes of M-Commerce and
Its Economic Advantages
• Mobility - users carry cell phones or
other mobile devices
• Broad reach - people can be reached
at any time
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Value-added attributes of
m-commerce
• Ubiquity - easier information access in real-time
• Convenience - devices that store data and have
Internet, intranet, extranet connections
• Instant connectivity - easy and quick connection
to Internet, intranets, other mobile devices,
databases
• Personalization - preparation of information for
individual consumers
• Localization of products and services - knowing
where the user is located at any given time and
match service to them
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NextBus: A Superb Customer
Service (1/3)
• The Problem
• Buses in San Francisco have difficulty
keeping to 20 minute schedule during rush
hours
• Posted schedule becomes meaningless
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NextBus: A Superb Customer
Service (2/3)
• The Solution
• Bus riders carrying Internet-enabled cell
phone or PDA helps:
• Find estimated arrival time at each stop, digitally
in real time
• Soon location-based advertisements will pop up—
you have time to get a cup of coffee before the
bus arrives—Starbuck’s is 200 feet to the right
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NextBus: A Superb Customer
Service (3/3)
• The Results
• Passengers in San Francisco are happy with the
system
• Worries about missing the bus are diminished
• May discover they have time for a cup of coffee
before the bus arrives
• Bus company can:
• Schedule better
• Arrange for extra buses when needed
• Improve operations
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Examples of M-Commerce
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GPS System
Mobile banking
Mobile Stock Market
Mobile Download (Game or Character)
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Example: SK Telecom - NEMO
• Mobile e-Money services
• Send payment via NEMO
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Wide application
Entertainment
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Music
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Games
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Graphics
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Video
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Pornography
M- commerce
Transactions
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Banking
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Broking
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Shopping
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Auctions
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Betting
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Booking &
reservations
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Mobile wallet
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Mobile purse
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Communications
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Short Messaging
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Multimedia Messaging
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Unified Messaging
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e-mail
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Chatrooms
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Video - conferencing
Information
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News
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City guides
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Directory Services
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Maps
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Traffic and weather
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Corporate information
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Market data
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Classes of M-Commerce Applications
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M-Commerce Hardware
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Cellular (mobile) phones
Smart phones
PDA
Interactive pagers
Other devices
• Laptops
• ETC
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M-Commerce: Software
• Microbrowser
• Mobile client operating system (OS)
• Windows 2000/2001/NT, Palm OS, Win CE
• Bluetooth - a chip technology and WPAN
standard that enables voice and data
communications between wireless devices
over short-range radio frequency (RF)
• Mobile application user interface
• Back-end legacy application software
• Application middleware
• Wireless middleware
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M-Commerce: Protocol
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MANET (Mobile Ad-hoc Network)
WAP (Wireless Application Protocol)
Bluetooth
Mobile IP
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WAP Architecture
Web Server
WAP Gateway
WML
WML Encoder
WMLScript
WSP/WTP
WMLScript
Compiler
HTTP
CGI
Scripts
etc.
WTAI
Protocol Adapters
Content
WML Decks
with WML-Script
Client
Etc.
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WAP - Wireless Application
Protocol
• Forum: wapforum.org
• co-founded by Ericsson, Motorola, Nokia, Unwired Planet
• Goals
• deliver Internet services to mobile devices
• independence from wireless network standards
• Browser
• “micro browser”, similar to existing web browsers
• Script language
• similar to Java script, adapted to mobile devices
• Gateway
• transition from wireless to wired world
• Server
• “wap server”, similar to existing web servers
• Protocol layers
• transport layer, security layer, session layer etc.
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Limitations of M-Commerce
• Usability Problem
• small size of mobile devices (screens, keyboards, etc)
• limited storage capacity of devices
• hard to browse sites
• Technical Limitations
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lack of a standardized security protocol
insufficient bandwidth
3G licenses
transmission and power consumption limitations
heterogeneity of fragmented networks
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Q&A
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WAP Risks
• WAP Gap
• Claim: WTLS protects WAP as SSL protects HTTP
• Problem: In the process of translating one protocol
to another, information is decrypted and reencrypted
• Recall the WAP Architecture
• Solution: Doing decryption/re-encryption in the same
process on the WAP gateway
• Wireless gateways as single point of
failure
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