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:
Online Access:http://psasir.upm.edu.my/id/eprint/25764/1/FSKTM%202011%2037R.pdf
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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
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