Performance evaluation of two transport protocols for image transmission over CDPD networks
Due to the low bandwidth and harsh noise characteristics of cellular wireless networks, the transmission of images over these networks may require a long time, especially if the transport protocol used is the standard Transmission Control Protocol (TCP), which has been tuned for more reliable wir...
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ndltd-LACETR-oai-collectionscanada.gc.ca-BVAU.2429-84132014-03-14T15:42:34Z Performance evaluation of two transport protocols for image transmission over CDPD networks Zhou, Jun Due to the low bandwidth and harsh noise characteristics of cellular wireless networks, the transmission of images over these networks may require a long time, especially if the transport protocol used is the standard Transmission Control Protocol (TCP), which has been tuned for more reliable wireline networks. In this thesis, we study and compare the performance of two efficient image transmission schemes suitable for low bit rate wireless data networks. The Cellular Digital Packet Data (CDPD) network is chosen as the example wireless data network in this research. Scheme 1 uses the standard TCP in conjunction with a flexible image transmission strategy, in which the amount of image data sent is negotiated by the client according to a desired image quality. Scheme 2 uses a new file transfer protocol called Image File Transfer Protocol (IFTP), and is built on the top of the User Datagram Protocol (UDP) in the transport layer. IFTP keeps the error and retransmission control in the application, and transmits the progressive JPEG image scan by scan in a sequence according to the scan priorities. An extensive OPNET model is developed for the performance evaluation of the two proposed image transmission schemes. Simulation results show that IFTP is functionally sound in a multi-link network and outperforms the TCP-based scheme in terms of image transmission time. 2009-05-28T23:14:28Z 2009-05-28T23:14:28Z 1998 2009-05-28T23:14:28Z 1998-11 Electronic Thesis or Dissertation http://hdl.handle.net/2429/8413 eng UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/] |
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NDLTD |
language |
English |
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NDLTD |
description |
Due to the low bandwidth and harsh noise characteristics of cellular wireless networks,
the transmission of images over these networks may require a long time, especially if the
transport protocol used is the standard Transmission Control Protocol (TCP), which has been
tuned for more reliable wireline networks. In this thesis, we study and compare the performance
of two efficient image transmission schemes suitable for low bit rate wireless data networks.
The Cellular Digital Packet Data (CDPD) network is chosen as the example wireless data
network in this research. Scheme 1 uses the standard TCP in conjunction with a flexible image
transmission strategy, in which the amount of image data sent is negotiated by the client
according to a desired image quality. Scheme 2 uses a new file transfer protocol called Image
File Transfer Protocol (IFTP), and is built on the top of the User Datagram Protocol (UDP) in the
transport layer. IFTP keeps the error and retransmission control in the application, and transmits
the progressive JPEG image scan by scan in a sequence according to the scan priorities.
An extensive OPNET model is developed for the performance evaluation of the two
proposed image transmission schemes. Simulation results show that IFTP is functionally sound
in a multi-link network and outperforms the TCP-based scheme in terms of image transmission
time. |
author |
Zhou, Jun |
spellingShingle |
Zhou, Jun Performance evaluation of two transport protocols for image transmission over CDPD networks |
author_facet |
Zhou, Jun |
author_sort |
Zhou, Jun |
title |
Performance evaluation of two transport protocols for image transmission over CDPD networks |
title_short |
Performance evaluation of two transport protocols for image transmission over CDPD networks |
title_full |
Performance evaluation of two transport protocols for image transmission over CDPD networks |
title_fullStr |
Performance evaluation of two transport protocols for image transmission over CDPD networks |
title_full_unstemmed |
Performance evaluation of two transport protocols for image transmission over CDPD networks |
title_sort |
performance evaluation of two transport protocols for image transmission over cdpd networks |
publishDate |
2009 |
url |
http://hdl.handle.net/2429/8413 |
work_keys_str_mv |
AT zhoujun performanceevaluationoftwotransportprotocolsforimagetransmissionovercdpdnetworks |
_version_ |
1716651403196235776 |