QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding

Existing Wireless Local Area Networks (WLANs), which are dominated by the IEEE802.11b/a/g/n standards, only provide best effort services. These IEEE802.11 protocols that primarily employ Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism are unable to provide Quality of Servi...

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Main Author:	Pang, Wai Leong
Format:	Thesis
Published:	2012
Subjects:	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
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id	my-mmu-ep.5222
record_format	uketd_dc
spelling	my-mmu-ep.52222014-02-17T01:46:28Z QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding 2012-05 Pang, Wai Leong TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television Existing Wireless Local Area Networks (WLANs), which are dominated by the IEEE802.11b/a/g/n standards, only provide best effort services. These IEEE802.11 protocols that primarily employ Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism are unable to provide Quality of Service (QoS) guarantee to the real time applications. The IEEE802.11e was later introduced to provide prioritized services to the real time applications and protect the real time traffic from the best effort traffic. One major drawback of IEEE802.11e is that it cannot guarantee the stringent QoS required of the real time applications under high traffic load. A solution is needed to provide the prioritized services and control the traffic load, in order to protect the real time applications. In this thesis, a novel Adaptive Priority Sliding Admission Control and Scheduling (APSAS) scheme is proposed on top of the Distributed Coordination Function (DCF) and Enhanced Distributed Channel Access (EDCA) Medium Access Control (MAC) that are commonly used in IEEE802.11b/a/g and IEEE802.11e. APSAS’s roles are generally two folds: (1) controls the number of real time flows admitted to the network and (2) adjusts the priority of selected real time flows in order to accommodate more real time flows without violating the stringent QoS requirements. Extensive simulation studies show that APSAS improves the total throughput, flow throughput ratio, packets end-to-end delay, and jitter of the real time applications over WLAN compared to basic and scheduled DCF/EDCA. The contributions of this thesis are summarized as follow: • Class Based Queuing (CBQ) is identified as the suitable scheduling scheme for WLAN after extensive simulation verification. Optimal operation point of the admission control scheme is identified. • Two novel schemes, i.e. Layer 3 Admission Control and Adaptive Scheduling (L3-ACAS) and APSAS that work on top and upgrade the best effort DCF to prove QoS and improve the performance of EDCA are proposed. • L3-ACAS and APSAS provide a centralized control at router side. 2012-05 Thesis http://shdl.mmu.edu.my/5222/ http://vlib.mmu.edu.my/diglib/login/dlusr/login.php phd doctoral Multimedia University Faculty of Engineering
institution	Multimedia University
collection	MMU Institutional Repository
topic	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
spellingShingle	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television Pang, Wai Leong QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding
description	Existing Wireless Local Area Networks (WLANs), which are dominated by the IEEE802.11b/a/g/n standards, only provide best effort services. These IEEE802.11 protocols that primarily employ Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism are unable to provide Quality of Service (QoS) guarantee to the real time applications. The IEEE802.11e was later introduced to provide prioritized services to the real time applications and protect the real time traffic from the best effort traffic. One major drawback of IEEE802.11e is that it cannot guarantee the stringent QoS required of the real time applications under high traffic load. A solution is needed to provide the prioritized services and control the traffic load, in order to protect the real time applications. In this thesis, a novel Adaptive Priority Sliding Admission Control and Scheduling (APSAS) scheme is proposed on top of the Distributed Coordination Function (DCF) and Enhanced Distributed Channel Access (EDCA) Medium Access Control (MAC) that are commonly used in IEEE802.11b/a/g and IEEE802.11e. APSAS’s roles are generally two folds: (1) controls the number of real time flows admitted to the network and (2) adjusts the priority of selected real time flows in order to accommodate more real time flows without violating the stringent QoS requirements. Extensive simulation studies show that APSAS improves the total throughput, flow throughput ratio, packets end-to-end delay, and jitter of the real time applications over WLAN compared to basic and scheduled DCF/EDCA. The contributions of this thesis are summarized as follow: • Class Based Queuing (CBQ) is identified as the suitable scheduling scheme for WLAN after extensive simulation verification. Optimal operation point of the admission control scheme is identified. • Two novel schemes, i.e. Layer 3 Admission Control and Adaptive Scheduling (L3-ACAS) and APSAS that work on top and upgrade the best effort DCF to prove QoS and improve the performance of EDCA are proposed. • L3-ACAS and APSAS provide a centralized control at router side.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Pang, Wai Leong
author_facet	Pang, Wai Leong
author_sort	Pang, Wai Leong
title	QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding
title_short	QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding
title_full	QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding
title_fullStr	QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding
title_full_unstemmed	QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding
title_sort	qos provisioning in wireless local area network using adaptive admission control and scheduling with priority sliding
granting_institution	Multimedia University
granting_department	Faculty of Engineering
publishDate	2012
_version_	1747829565476044800

QoS provisioning in Wireless Local Area Network using adaptive admission control and scheduling with priority sliding

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