Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN

TCP unfairness issue has becomes pronounced in IEEE 802.11 WLANs due to the distributed coordination function (DCF) mechanism in the 802.11 MAC protocol. It introduces the per-flow and per-station fairness problem between uplink and downlink flows. The uplink flows generally dominate the downlink fl...

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Main Author:	Rasul, Tareq
Format:	Thesis
Language:	English
Published:	2011
Subjects:	Windows (Computer programs) TCP/IP (Computer network protocol) IEEE 802.11 (Standard)
Online Access:	http://psasir.upm.edu.my/id/eprint/25764/1/FSKTM%202011%2037R.pdf
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id	my-upm-ir.25764
record_format	uketd_dc
spelling	my-upm-ir.257642022-01-26T05:07:40Z Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN 2011-07 Rasul, Tareq TCP unfairness issue has becomes pronounced in IEEE 802.11 WLANs due to the distributed coordination function (DCF) mechanism in the 802.11 MAC protocol. It introduces the per-flow and per-station fairness problem between uplink and downlink flows. The uplink flows generally dominate the downlink flows and station with more uplink flows obtains most of the system resources. With the existing of multi-rate capability in WLANs, another performance anomaly of 802.11 can be detected where the performance of a WLAN is determined by the stations with the lowest data transmission rates. The objective of this research is to allocate fair proportional throughput among TCP flows of competing stations in IEEE 802.11 multi-rate infrastructure WLANs by distributing appropriate window and packet size according to the availability of buffer size in the access point (AP). The research scenario focuses on the issue of fairness among stations having different numbers and directions of flow with vary of data transmission rates. In this work, a rated-window size method is performed by proportionally adjust the window size based on transmission rate of each flow. Each of the flow has its own window size and perfectly fit with the portion of available buffer size. Similar with the first method, the second scheme is proposed by manipulating the packet size of each station according to its physical transmission rate so that each station shared proportion bandwidth allocation. The results of total throughput and fairness index are compared with previous methods. Proposed methods generate fair service in terms of proportional throughput among wireless stations. By getting appropriate fairness among each station in accessing WLAN infrastructure, a Wireless Internet Service Provider (WISP) significantly can increase its revenue by providing various service plans that have different service weights and service fees. Windows (Computer programs) TCP/IP (Computer network protocol) IEEE 802.11 (Standard) 2011-07 Thesis http://psasir.upm.edu.my/id/eprint/25764/ http://psasir.upm.edu.my/id/eprint/25764/1/FSKTM%202011%2037R.pdf application/pdf en public masters Universiti Putra Malaysia Windows (Computer programs) TCP/IP (Computer network protocol) IEEE 802.11 (Standard) Faculty of Computer Science and Information Technology
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Windows (Computer programs) TCP/IP (Computer network protocol) IEEE 802.11 (Standard)
spellingShingle	Windows (Computer programs) TCP/IP (Computer network protocol) IEEE 802.11 (Standard) Rasul, Tareq Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN
description	TCP unfairness issue has becomes pronounced in IEEE 802.11 WLANs due to the distributed coordination function (DCF) mechanism in the 802.11 MAC protocol. It introduces the per-flow and per-station fairness problem between uplink and downlink flows. The uplink flows generally dominate the downlink flows and station with more uplink flows obtains most of the system resources. With the existing of multi-rate capability in WLANs, another performance anomaly of 802.11 can be detected where the performance of a WLAN is determined by the stations with the lowest data transmission rates. The objective of this research is to allocate fair proportional throughput among TCP flows of competing stations in IEEE 802.11 multi-rate infrastructure WLANs by distributing appropriate window and packet size according to the availability of buffer size in the access point (AP). The research scenario focuses on the issue of fairness among stations having different numbers and directions of flow with vary of data transmission rates. In this work, a rated-window size method is performed by proportionally adjust the window size based on transmission rate of each flow. Each of the flow has its own window size and perfectly fit with the portion of available buffer size. Similar with the first method, the second scheme is proposed by manipulating the packet size of each station according to its physical transmission rate so that each station shared proportion bandwidth allocation. The results of total throughput and fairness index are compared with previous methods. Proposed methods generate fair service in terms of proportional throughput among wireless stations. By getting appropriate fairness among each station in accessing WLAN infrastructure, a Wireless Internet Service Provider (WISP) significantly can increase its revenue by providing various service plans that have different service weights and service fees.
format	Thesis
qualification_level	Master's degree
author	Rasul, Tareq
author_facet	Rasul, Tareq
author_sort	Rasul, Tareq
title	Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN
title_short	Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN
title_full	Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN
title_fullStr	Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN
title_full_unstemmed	Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN
title_sort	rated window method and packet size differentiation scheme for tcp fairness in ieee 802.11 wlan
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Computer Science and Information Technology
publishDate	2011
url	http://psasir.upm.edu.my/id/eprint/25764/1/FSKTM%202011%2037R.pdf
_version_	1747811529964650496

Rated window method and packet size differentiation scheme for TCP fairness in IEEE 802.11 WLAN

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