FYP: LYU0001 Wireless-based Mobile E-Commerce on the Web

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FYP LYU0001Wireless-based MobileE-Commerce on
the Web

• Supervisor Prof. Michael R. Lyu
• By Tony, Wat Hong Fai
• Harris, Yan Wai Keung

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Outline

• Introduction
• Traditional web access vs mobile access
• Protocol WAP
• WAP architecture, limitation and future
• E-Commerce Model
• Our Future work
• XML, XSL

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Web Access vs Mobile Access

• Web vs WAP
• Different protocols to be used
• HTML for standard web browser (IE/Netscape)
• WML for small narrowband device (mobile
  phone/PDAs)
• WML is not as visually rich as HTML.

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WAP

• WAP Wireless Application Protocol
• Based on already existing Internet protocols, but
  are optimized for mobile users with wireless
  devices
• Specification for developing applications over
  wireless communication networks
• Translating internet information to display on
  the screen of mobile phones or other portable
  device.
• mobile phone from which you can surf the web, but
  it is not all the case

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WAP Architecture(1)

• A web server can host the WAP
• A WAP Gateway is an intermediary between the
  Internet and the mobile network.
• translates mobile device requests (WAP requests)
  into HTTP requests, redirects the web-server's
  HTTP responses to the mobile
• An Emulator downloads a WML file directly from a
  web-server

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WAP Architecture(2)
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WML

• WML Wireless Markup Language
• Specific type of XML (eXtensible Markup Language)
• Standardized Document Type Definition (DTD) by
  W3C
• Functional Areas1. Text presentation and
  layout2. Deck/card organizational metaphor,3.
  Inter-card navigation and linking4. String
  parameterization and state management (WML
  variables)5. Interface to phone features

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WAP Limitation

• Designed with constraints1. Small display and
  limited input facilities2. Narrowband network
  connection3. Limited memory and computational
  resources
• Narrow bandwidth 9.6kbps
• Maximum size of each deck 1.4 Kbytes
• Recently, only text and monochrome images (.wbmp)
  are supported

GIF format on web
WBMP format on WAP
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WAP Future

• Recently, WAP(version 1.2) is based on GSM, CDMA
  or TDMA networks (2G)
• Later on, gateway can get the users information,
  such as phone number and current location.
• GPRS (General Packet Radio Service) is a mobile
  telephony network system that uses packet
  switched data transmission (2.5G).
• It provide faster speed (max. 172kbps) and better
  application can be developed. Eg. Multimedia
  applications and remote LAN access
• When 3G is available in the market, it will make
  video conferencing possible

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E-Commerce Model

• Our objective is to practise real life e-commerce
  with security and payment issues
• Design and Develop a WAP-based E-Commerce
  application on the Web
• A Second hand market application is to be built
  for real-time interaction, purchasing and
  transaction with payment
• Accessible with WAP-enabled device such as mobile
  phone and PDAs

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Facilities of the Model(1)

• Posting products for sale or to request for
• Secure payment method by Visa/Master card, Mondex
• Real-time buyer-seller interaction including
  chatting to bargain for the price
• Real-time purchasing and make transaction

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Facilities of the Model(2)

• Session propagation for convenient and secure
  operations
• Provide pictures for web and wap users
• Store user transaction history and personal
  profile

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Future work(1)

• Implement the online market in both web and WAP
  versions
• Customize and personalize the UI of WAP browser
  to meet complex e-commerce model
• Use of XML to manipulate the raw data to make it
  generic for future development on WAP technology
• Use of XSL for transformation from a XML document
  to HTML or WML depends on users request

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Future Work(2)
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Introduction to XML and XSL

• XML (eXtensible Markup Language)- a meta
  language used to define other domain- or
  industry-specific languages- Creating markup
  languages that describe data- Human readable
  format- targeted to different devices using
  XSL- No fixed set of elements- a specific
  Document Type Definition (DTD) is needed to
  provide the rules that define the elements and
  structure

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Introduction to XSL

• XSL (eXtensible Stylesheet Language)- is XML- a
  language for transforming XML documents XSLT-
  an XML vocabulary for specifying formatting
  semantics XSL FO (formatting objects)- A
  description of how to present the transformed
  information- a syntax for addressing parts of a
  document XPath

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Advantages of XML and XSL(1)

• Use of XML to increase the flexibility on
  manipulating the raw data
• Reuse of fragments of data
• multiple output formats

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Advantages of XML and XSL(2)

• styles tailored to the reader's preference (e.g.,
  accessibility)
• standardized styles
• freedom from style issues for content authors

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The End

• Thank You!