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

FYP: LYU0001 Wireless-based Mobile E-Commerce on the Web. Supervisor: Prof. Michael R. Lyu By: Tony, Wat Hong Fai Harris, Yan Wai Keung. Outline. Introduction Traditional web access vs mobile access Protocol : WAP WAP architecture, limitation and future E-Commerce Model

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

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  1. FYP: LYU0001Wireless-based MobileE-Commerce on the Web Supervisor: Prof. Michael R. Lyu By: Tony, Wat Hong Fai Harris, Yan Wai Keung

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

  3. 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. Web Access vs Mobile Access

  4. 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

  5. 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

  6. WAP Architecture(2)

  7. WML • WML – Wireless Markup Language • Specific type of XML (eXtensible Markup Language) • Standardized Document Type Definition (DTD) by W3C • Functional Areas:1. 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

  8. WAP Limitation • Designed with constraints:1. 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

  9. WAP Future • Recently, WAP(version 1.2) is based on GSM, CDMA or TDMA networks (2G) • Later on, gateway can get the user’s 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. Future Work(2)

  15. 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

  16. 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]

  17. 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

  18. 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

  19. The End Thank You!

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