HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network

Active Queue Management (AQM) is a proactive scheme that controls network congestion by avoiding it before it happens. When implementing AQM in wireless networks, several contemporary issues must be considered, such as interference, collisions, multipath-fading, propagation distance and shadowing e...

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Main Author:	Al-Khamees, Atheer Flayh Hassan
Format:	Thesis
Language:	eng eng eng
Published:	2018
Subjects:	TK7885-7895 Computer engineering Computer hardware
Online Access:	https://etd.uum.edu.my/8632/1/s94241_01.pdf https://etd.uum.edu.my/8632/2/s94241_02.pdf https://etd.uum.edu.my/8632/3/s94241_references.docx
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id	my-uum-etd.8632
record_format	uketd_dc
spelling	my-uum-etd.86322021-09-12T03:15:16Z HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network 2018 Al-Khamees, Atheer Flayh Hassan Hassan, Suhaidi Che Mohamed Arif, Ahmad Suki Awang Had Salleh Graduate School of Arts & Sciences Awang Had Salleh Graduate School of Arts & Sciences TK7885-7895 Computer engineering. Computer hardware Active Queue Management (AQM) is a proactive scheme that controls network congestion by avoiding it before it happens. When implementing AQM in wireless networks, several contemporary issues must be considered, such as interference, collisions, multipath-fading, propagation distance and shadowing effects, which affect the transmission rate of the links. These issues in WLAN networks with the existence of different types of flow have a direct effect on fairness. The main idea behind the wireless network is using the flexibility of radio waves to transfer data from point to point that is giving WLAN the flexibility and mobility: wireless nodes can connect, disconnect or even move from one access point to another rapidly. However, this affects the stability of the WLAN network. This research aims to reduce unfairness and instability by proposing a Hybrid-Fair AQM (HFAQM) scheme. HFAQM comprises two mechanisms: Congestion Indicator Mechanism (CIM), and Control Function Mechanism (CFM). CIM was designed to improve fairness in WLANs by hybridizing queue delay with arrival rate as parameters to calculate the congestion level. Whereas, CFM was developed to improve network stability by using an adaptive control function with the ability to drop and mark packets to overcome the rapidly changing characteristics of WLAN network. A series of experimental studies were conducted to validate the proposed mechanisms and four variants of AQM schemes, RED, REM, AVQ and CoDel, were chosen to evaluate the performance of HFAQM through simulation. The findings show that HFAQM’s main achievement is 99% fairness and improved stability by 10% from the closest scheme, with better throughput, queue length, queue loss, and outgoing link utilization as secondary achievements. The proposed scheme provides significantly better fairness and stability in WLAN environment, with the existence of different types of flow. 2018 Thesis https://etd.uum.edu.my/8632/ https://etd.uum.edu.my/8632/1/s94241_01.pdf text eng public https://etd.uum.edu.my/8632/2/s94241_02.pdf text eng public https://etd.uum.edu.my/8632/3/s94241_references.docx text eng public other doctoral Universiti Utara Malaysia
institution	Universiti Utara Malaysia
collection	UUM ETD
language	eng eng eng
advisor	Hassan, Suhaidi Che Mohamed Arif, Ahmad Suki
topic	TK7885-7895 Computer engineering Computer hardware
spellingShingle	TK7885-7895 Computer engineering Computer hardware Al-Khamees, Atheer Flayh Hassan HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network
description	Active Queue Management (AQM) is a proactive scheme that controls network congestion by avoiding it before it happens. When implementing AQM in wireless networks, several contemporary issues must be considered, such as interference, collisions, multipath-fading, propagation distance and shadowing effects, which affect the transmission rate of the links. These issues in WLAN networks with the existence of different types of flow have a direct effect on fairness. The main idea behind the wireless network is using the flexibility of radio waves to transfer data from point to point that is giving WLAN the flexibility and mobility: wireless nodes can connect, disconnect or even move from one access point to another rapidly. However, this affects the stability of the WLAN network. This research aims to reduce unfairness and instability by proposing a Hybrid-Fair AQM (HFAQM) scheme. HFAQM comprises two mechanisms: Congestion Indicator Mechanism (CIM), and Control Function Mechanism (CFM). CIM was designed to improve fairness in WLANs by hybridizing queue delay with arrival rate as parameters to calculate the congestion level. Whereas, CFM was developed to improve network stability by using an adaptive control function with the ability to drop and mark packets to overcome the rapidly changing characteristics of WLAN network. A series of experimental studies were conducted to validate the proposed mechanisms and four variants of AQM schemes, RED, REM, AVQ and CoDel, were chosen to evaluate the performance of HFAQM through simulation. The findings show that HFAQM’s main achievement is 99% fairness and improved stability by 10% from the closest scheme, with better throughput, queue length, queue loss, and outgoing link utilization as secondary achievements. The proposed scheme provides significantly better fairness and stability in WLAN environment, with the existence of different types of flow.
format	Thesis
qualification_name	other
qualification_level	Doctorate
author	Al-Khamees, Atheer Flayh Hassan
author_facet	Al-Khamees, Atheer Flayh Hassan
author_sort	Al-Khamees, Atheer Flayh Hassan
title	HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network
title_short	HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network
title_full	HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network
title_fullStr	HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network
title_full_unstemmed	HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network
title_sort	hfaqm: a hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network
granting_institution	Universiti Utara Malaysia
granting_department	Awang Had Salleh Graduate School of Arts & Sciences
publishDate	2018
url	https://etd.uum.edu.my/8632/1/s94241_01.pdf https://etd.uum.edu.my/8632/2/s94241_02.pdf https://etd.uum.edu.my/8632/3/s94241_references.docx
_version_	1747828426958438400

HFAQM: A hybrid fair active queue management mechanism to improve fairness and stability for wireless local area network

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