Comparison between transmission control protocol schemes on wireless environment

Transmission Control Protocol (TCP) is reliable transmission protocol. It resides on the transport layer in the TCP/IP stack serving the upper application layer. Wireless networks send and receive data over the air using Radio Frequencies. That makes them vulnerable to high collisions rates and high...

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Main Author:	M. Albareki, Mustafa Ali
Format:	Thesis
Language:	English
Published:	2008
Subjects:	QA75 Electronic computers Computer science
Online Access:	http://eprints.utm.my/id/eprint/9506/1/MustafaAliMMFSKSM2008.pdf
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spelling	my-utm-ep.95062018-07-04T11:47:39Z Comparison between transmission control protocol schemes on wireless environment 2008-11 M. Albareki, Mustafa Ali QA75 Electronic computers. Computer science Transmission Control Protocol (TCP) is reliable transmission protocol. It resides on the transport layer in the TCP/IP stack serving the upper application layer. Wireless networks send and receive data over the air using Radio Frequencies. That makes them vulnerable to high collisions rates and high Bit Error Rate (BER). Transmissions over wireless links suffer from delays, frequent disconnections during handoffs and collisions along with standard TCPâ€™s congestion control mechanisms treat all errors as congestions and apply algorithms to degrade the throughput of TCP even more. In this study, wired and wireless TCP schemes are analyzed. This includes TCP-Tahoe, TCP-Reno, TCPVegas, TCP-Veno, TCP-SACK and TCP-Freeze. The TCP schemes are reviewed and several experiments are conducted. The results are then compared to check their performances regarding average throughput, average delay and their congestion window. Three different simulation environments that are considered that are Wired, Wireless and Heterogeneous using network simulator, NS-2.26 and NS-2.33. The results of the study show similarities and differences between the TCP schemes. From the simulations it is clear that in terms of packet delivery delays TCP-Vegas and TCP-Veno scored the best results in all the networks environments. They also achieved the best throughput in wired and heterogeneous networks while Freeze achieved the best throughput and congestion window in wireless (ad-hoc) environment. In wired networks TCP-SACK had the best congestion window; however, when implemented in with wireless mediums it did not perform well. Tahoe had the best congestion window in heterogeneous networks. The work for this study can be used as a reference for future researches in the area.TCP schemes such as Vegas and Veno implemented better algorithms to perform better over wireless links. TCP-Freeze which freezes all the timers and congestion window before handoffs helped improving TCP performance in mobile scenarios while proved ineffective in fixed wireless or wired scenarios. 2008-11 Thesis http://eprints.utm.my/id/eprint/9506/ http://eprints.utm.my/id/eprint/9506/1/MustafaAliMMFSKSM2008.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:857?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Computer Science and Information System Faculty of Computer Science and Information System
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QA75 Electronic computers Computer science
spellingShingle	QA75 Electronic computers Computer science M. Albareki, Mustafa Ali Comparison between transmission control protocol schemes on wireless environment
description	Transmission Control Protocol (TCP) is reliable transmission protocol. It resides on the transport layer in the TCP/IP stack serving the upper application layer. Wireless networks send and receive data over the air using Radio Frequencies. That makes them vulnerable to high collisions rates and high Bit Error Rate (BER). Transmissions over wireless links suffer from delays, frequent disconnections during handoffs and collisions along with standard TCPâ€™s congestion control mechanisms treat all errors as congestions and apply algorithms to degrade the throughput of TCP even more. In this study, wired and wireless TCP schemes are analyzed. This includes TCP-Tahoe, TCP-Reno, TCPVegas, TCP-Veno, TCP-SACK and TCP-Freeze. The TCP schemes are reviewed and several experiments are conducted. The results are then compared to check their performances regarding average throughput, average delay and their congestion window. Three different simulation environments that are considered that are Wired, Wireless and Heterogeneous using network simulator, NS-2.26 and NS-2.33. The results of the study show similarities and differences between the TCP schemes. From the simulations it is clear that in terms of packet delivery delays TCP-Vegas and TCP-Veno scored the best results in all the networks environments. They also achieved the best throughput in wired and heterogeneous networks while Freeze achieved the best throughput and congestion window in wireless (ad-hoc) environment. In wired networks TCP-SACK had the best congestion window; however, when implemented in with wireless mediums it did not perform well. Tahoe had the best congestion window in heterogeneous networks. The work for this study can be used as a reference for future researches in the area.TCP schemes such as Vegas and Veno implemented better algorithms to perform better over wireless links. TCP-Freeze which freezes all the timers and congestion window before handoffs helped improving TCP performance in mobile scenarios while proved ineffective in fixed wireless or wired scenarios.
format	Thesis
qualification_level	Master's degree
author	M. Albareki, Mustafa Ali
author_facet	M. Albareki, Mustafa Ali
author_sort	M. Albareki, Mustafa Ali
title	Comparison between transmission control protocol schemes on wireless environment
title_short	Comparison between transmission control protocol schemes on wireless environment
title_full	Comparison between transmission control protocol schemes on wireless environment
title_fullStr	Comparison between transmission control protocol schemes on wireless environment
title_full_unstemmed	Comparison between transmission control protocol schemes on wireless environment
title_sort	comparison between transmission control protocol schemes on wireless environment
granting_institution	Universiti Teknologi Malaysia, Faculty of Computer Science and Information System
granting_department	Faculty of Computer Science and Information System
publishDate	2008
url	http://eprints.utm.my/id/eprint/9506/1/MustafaAliMMFSKSM2008.pdf
_version_	1747814742347481088

Comparison between transmission control protocol schemes on wireless environment

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