1.  2001 Prentice Hall, Inc. All rights reserved. 1 Chapter 1, Introduction to the Internet, World Wide Web and Wireless Outline 1.1 Introduction 1.2History of the Internet 1.3History of the World Wide Web 1.4 Internet and World Wide Web Development 1.5Overview of m-Business and the Wireless Internet 1.6Tour of the Book 1.7Internet and World Wide Web Resources

2.  2001 Prentice Hall, Inc. All rights reserved. 2 1.1 Introduction Mobile business (M-business) –Enables Internet connection from almost anywhere –Wireless devices Cell phones Personal digital assistants (PDAs) Pagers Laptops This Book –Part I: applications and benefits of wireless technologies –Part II: how to program wireless applications Computer program examples and outputs –Wireless Internet & Mobile Business Cyber Classroom Multimedia tutorial of wireless programming

3.  2001 Prentice Hall, Inc. All rights reserved. 3 1.1 Introduction

4.  2001 Prentice Hall, Inc. All rights reserved. 4 1.2 History of the Internet The ARPA conference –Advanced Research Projects Agency sponsored a conference of graduate students at University of Illinois –Blueprints for ARPAnet: Connecting computers of a dozen ARPA-funded universities The ARPAnet –Electronic mail (e-mail): quick and easy communications –Reduced transmission costs Packet switching: information sent in packets, allowed multiple users to send/receive info simultaneously over same paths –No centralized control: improved availability –ARPAnet was grandparent of today’s Internet

5.  2001 Prentice Hall, Inc. All rights reserved. 5 1.2 History of the Internet TCP/IP –Transmission Control Protocol: early protocols for communicating on ARPAnet –Internetworking Protocol: created large network containing many existing networks –TCP/IP: combined set of protocols Use of the Internet –First universities and research, then expanded to military, then commercial and business use –Internet competition resulted in increased bandwidth: information carrying capacity

6.  2001 Prentice Hall, Inc. All rights reserved. 6 1.3 History of the World Wide Web The World Wide Web –allows computer users to locate and view multimedia-based documents on almost any subject –Developed in 1990 by Tim Berners-Lee –Internet and World Wide Web mix computing and communications technologies making information instantly and conveniently accessible worldwide

7.  2001 Prentice Hall, Inc. All rights reserved. 7 1.4 Internet and World Wide Web Development Computing costs have decreased dramatically because of rapid developments in hardware and software technology Advances in hardware and software have led to the literal explosion of the Internet and World Wide Web There have been predictions that the Internet will eventually replace the telephone, radio, television, book and newspaper

8.  2001 Prentice Hall, Inc. All rights reserved. 8 1.5 Overview of m-Business and the Wireless Internet Wireless technology brings communication, Internet and World Wide Web to users around the world –Eventually, consumers and businesses will be able to conduct all information transactions from mobile devices Applications –Businesses: transmitting critical information –Schools: improved connectivity –Consumers: purchasing products when away from home

9.  2001 Prentice Hall, Inc. All rights reserved. 9 1.5 Overview of m-Business and the Wireless Internet Location-identification –E911 act: location-identification capabilities built into all cell phones –TDOA, AOA and GPS –Benefits Enhances lives of disabled (Digital Angel) Improves B2C and B2B applications Provides focused marketing and store/restaurant location E-payments –M-wallets: store billing information –Bluetooth wireless technology and infrared: transactions occur via wireless devices

10.  2001 Prentice Hall, Inc. All rights reserved. 10 1.5 Overview of m-Business and the Wireless Internet Concerns –Continuous marketing: privacy issues –Accumulated personal information WTLS protocol protects wireless information, but not once decrypted at destination –Small text-based interfaces Technologies –First-generation: analog cell phones –Second-generation: digital transmissions on circuit-switched networks PCS, GSM, CDMA, TDMA and OFDM

11.  2001 Prentice Hall, Inc. All rights reserved. 11 1.5 Overview of m-Business and the Wireless Internet Technologies (cont’d) –2.5 generation: between 2G and 3G packet-switching –Third-generation: streaming audio, video, multimedia and voice transmissions W-CDMA, HSCSD, GPRS, EDGE and CDMA2000 NTT DoCoMo: leads world in 3G development (W-CDMA) Standardization –Variety of transmission protocols –Languages HDML, WAP/WML and J2ME –BREW: enables developers to write applications for devices on disparate platforms