Qos-aware bandwidth allocation algorithm for long range passive broadband access network

Next generation broadband access networks are gaining more interest from many key players in this field. The demands for more extended reach and higher bandwidth are among the driving factors for such a network. The advantages of this network include a wider coverage area reaching 100 km, even beyon...

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Main Author:	Mohammad, Siti Hasunah
Format:	Thesis
Language:	English
Published:	2023
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/102815/1/SitiHasunahMohammadPSKE2023.pdf.pdf
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id	my-utm-ep.102815
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spelling	my-utm-ep.1028152023-09-24T03:15:19Z Qos-aware bandwidth allocation algorithm for long range passive broadband access network 2023 Mohammad, Siti Hasunah TK Electrical engineering. Electronics Nuclear engineering Next generation broadband access networks are gaining more interest from many key players in this field. The demands for more extended reach and higher bandwidth are among the driving factors for such a network. The advantages of this network include a wider coverage area reaching 100 km, even beyond; increased bandwidth capacity and transmission speed, but with low cost and energy consumption. One promising candidate is the Long Reach Passive Optical Network (LR-PON). LR-PON is a term that refers to the consolidation of the metro and the access networks in the traditional PON, which also means the merger of the multiple Optical Line Terminals (OLTs) and the Central Offices (CO) in the network. LR-PON can simplify the network by reducing the number of network elements, equipment interfaces, and even nodes which significantly reduces the network’s Capital Expenditure (CAPEX) and Operational Expenditure (OPEX). Although the LR-PON can provide extended reach, this results in increased propagation delay of Dynamic Bandwidth Allocation (DBA) messages exchanged between the OLT and Optical Network Units (ONUs), leading to degradation of DBA and Quality of Service (QoS) support. Longer round-trip-time (RTT) in LR-PON causes redundancy in the DBA mechanism as the ONU polling cycle becomes smaller than RTT. Therefore, this thesis focuses on deploying an efficient QoS-aware bandwidth allocation algorithm with an appropriate Service Interval (SI) setup for LR-PON to ensure the delay is maintained under ITU-T G.987.1 standard requirement, named as Service Interval-based Bandwidth Algorithm (SIBA). OMNeT++ software is used to run a discrete event simulation of the network. Simulation findings reveal SIBA’s superior performance for all the traffic classes where the mean upstream delays of Transmission Container (T-CONT) 2 and T-CONT 3 improved up to 88% and 85% respectively, compared to Immediate Allocation Colourless Grant (IACG) algorithm. SIBA also surpasses the mean upstream delay of the Efficient Bandwidth Utilization (EBU) algorithm by up to 90% for both T-CONT 2 and T-CONT 3, and by 83% for T-CONT 4 compared to the Comprehensive Bandwidth Allocation algorithm for LR XG-PON (CBA-LR). 2023 Thesis http://eprints.utm.my/102815/ http://eprints.utm.my/102815/1/SitiHasunahMohammadPSKE2023.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:152234 phd doctoral Universiti Teknologi Malaysia Faculty of Engineering - School of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Mohammad, Siti Hasunah Qos-aware bandwidth allocation algorithm for long range passive broadband access network
description	Next generation broadband access networks are gaining more interest from many key players in this field. The demands for more extended reach and higher bandwidth are among the driving factors for such a network. The advantages of this network include a wider coverage area reaching 100 km, even beyond; increased bandwidth capacity and transmission speed, but with low cost and energy consumption. One promising candidate is the Long Reach Passive Optical Network (LR-PON). LR-PON is a term that refers to the consolidation of the metro and the access networks in the traditional PON, which also means the merger of the multiple Optical Line Terminals (OLTs) and the Central Offices (CO) in the network. LR-PON can simplify the network by reducing the number of network elements, equipment interfaces, and even nodes which significantly reduces the network’s Capital Expenditure (CAPEX) and Operational Expenditure (OPEX). Although the LR-PON can provide extended reach, this results in increased propagation delay of Dynamic Bandwidth Allocation (DBA) messages exchanged between the OLT and Optical Network Units (ONUs), leading to degradation of DBA and Quality of Service (QoS) support. Longer round-trip-time (RTT) in LR-PON causes redundancy in the DBA mechanism as the ONU polling cycle becomes smaller than RTT. Therefore, this thesis focuses on deploying an efficient QoS-aware bandwidth allocation algorithm with an appropriate Service Interval (SI) setup for LR-PON to ensure the delay is maintained under ITU-T G.987.1 standard requirement, named as Service Interval-based Bandwidth Algorithm (SIBA). OMNeT++ software is used to run a discrete event simulation of the network. Simulation findings reveal SIBA’s superior performance for all the traffic classes where the mean upstream delays of Transmission Container (T-CONT) 2 and T-CONT 3 improved up to 88% and 85% respectively, compared to Immediate Allocation Colourless Grant (IACG) algorithm. SIBA also surpasses the mean upstream delay of the Efficient Bandwidth Utilization (EBU) algorithm by up to 90% for both T-CONT 2 and T-CONT 3, and by 83% for T-CONT 4 compared to the Comprehensive Bandwidth Allocation algorithm for LR XG-PON (CBA-LR).
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Mohammad, Siti Hasunah
author_facet	Mohammad, Siti Hasunah
author_sort	Mohammad, Siti Hasunah
title	Qos-aware bandwidth allocation algorithm for long range passive broadband access network
title_short	Qos-aware bandwidth allocation algorithm for long range passive broadband access network
title_full	Qos-aware bandwidth allocation algorithm for long range passive broadband access network
title_fullStr	Qos-aware bandwidth allocation algorithm for long range passive broadband access network
title_full_unstemmed	Qos-aware bandwidth allocation algorithm for long range passive broadband access network
title_sort	qos-aware bandwidth allocation algorithm for long range passive broadband access network
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Electrical Engineering
publishDate	2023
url	http://eprints.utm.my/102815/1/SitiHasunahMohammadPSKE2023.pdf.pdf
_version_	1783729220594171904

Qos-aware bandwidth allocation algorithm for long range passive broadband access network

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