• TABLE OF CONTENTS
HIDE
 Title Page
 Dedication
 Acknowledgement
 Table of Contents
 Abstract
 Thesis introduction and motiva...
 Transmitting voice over an internet...
 Voice messaging client
 Wireline to wireless internet...
 Wireless internet voice messen...
 System implementation and performance...
 Future work
 Conclusion
 Appendix A: Screen captures of...
 Appendix B: Voice messaging client...
 Appendix C: Experiments result...
 References
 Biographical sketch






Title: Wireless instant voice messaging using the Internet
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Permanent Link: http://ufdc.ufl.edu/UF00100718/00001
 Material Information
Title: Wireless instant voice messaging using the Internet
Physical Description: viii, 262 p. ; ill.
Language: English
Creator: Rivera-Cintron, Carlos A., 1969- ( Dissertant )
Latchman, Haniph ( Thesis advisor )
Publisher: University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 2000
 Subjects
Subjects / Keywords: Internet telephony   ( lcsh )
Wireless communication systems   ( lcsh )
Mobile communication systems   ( lcsh )
Electrical and Computer Engineering thesis, M.S   ( lcsh )
Dissertations, Academic -- Electrical and Computer Engineering -- UF   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
bibliography   ( marcgt )
theses   ( marcgt )
non-fiction   ( marcgt )
 Notes
Abstract: "Communication is the successful transfer of information" - Dr. Haniph Latchman. If communication is the successful transfer of information then one of the most effective and efficient ways of transferring the information must be the human voice. When talking, human beings show an emotion in the voice, which is hardly reproducible by any electronic or mechanical device. In our fast moving society the need for information acquisition has fueled the development of mobile communication devices which use the human voice as the medium to communicate. With the fast spread of the Internet and the World Wide Web, for which the number of computers in US households growing at 15% per year, and Internet access growing 100% per year (source, International Engineering Consortium), it is obvious why voice communications have merged with the Internet. New wireless systems to be deployed in the year 2000 will be packet based, relying solely on an IP packet network mode which will not be circuit switched but purely packet switched. These mobile devices will have their own IP address no matter where the device is linked to the Internet, so applications that perform server functions will be able to run in these mobile servers. One such application is a wireless IP voice messenger, where a message can be sent to the IP address of a mobile user, without having to access a 3rd server in charge of looking up the mobile server, and while the user is using the device in a data call connected to the WWW. This thesis work presents the study of the systems used to transfer instant voice messages from a wireline Internet network to a wireless Internet device, using wireless IP technology. Because the voice message has to be digitized, packetized, entered and delivered via the Internet, Voice Over IP (VoIP) systems are presented as a model of study and reference for the design of the messaging system. We also look at the current voice compression technology. Once the voice message is on the Internet it has to be transmitted over the air to the receiving device, so a description of the interface between the wireline and wireless Internet networks is included. The wireless, packet based IP system is compared to a commercially available, user name based messaging system over a dial-up circuit switched connection. The system developed permits sending instant voice messages to wireline or wireless servers, with fixed or dynamic IP addresses. Several performance measurements are performed to analyze the packet transfer and ping performance over the wireless interface.
Summary: KEYWORDS: Mobile IP, GPRS, cellular telephony, wireless Internet, TCP/IP, PPP, wireline, voice codecs, software components
Thesis: Thesis (M.S.)--University of Florida, 2000.
Bibliography: Includes bibliographical references (p. 259-261).
Statement of Responsibility: by Carlos A. Rivera-Cintron.
General Note: Title from first page of PDF file.
General Note: Document formatted into pages; contains viii, 262 p.; also contains graphics.
General Note: Vita.
 Record Information
Bibliographic ID: UF00100718
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 45296592
alephbibnum - 002566148
notis - AMT2429

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Table of Contents
    Title Page
        Page i
    Dedication
        Page ii
    Acknowledgement
        Page iii
    Table of Contents
        Page iv
        Page v
        Page vi
    Abstract
        Page vii
        Page viii
    Thesis introduction and motivation
        Page 1
        Page 2
        Page 3
        Page 4
        Page 5
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
        Page 11
        Page 12
    Transmitting voice over an internet based network
        Page 13
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    Voice messaging client
        Page 30
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    Wireline to wireless internet gateway
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    Wireless internet voice messenger
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    System implementation and performance analysis
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    Future work
        Page 95
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    Conclusion
        Page 100
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    Appendix A: Screen captures of VMC and VMS
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    Appendix B: Voice messaging client and voice messaging server source code
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    Appendix C: Experiments results
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    References
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    Biographical sketch
        Page 262
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