Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Design, analysis and simultion for optical access and wide-area networks.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP. (photonics and microwave engineering (FMI))
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Due to the tremendous growth of traffic volume caused by both exponential increase of number of Internet users and continual emergence of new bandwidth demanding applications, high capacity networks are required in order to satisfactorily handle the extremely large amount of traffic. Hence, optical fiber communication is the key technology for the network infrastructure. This thesis addresses design, analysis and simulation of access and core networks targeting important research problems, which need to be tackled for the effective realization of next generation optical networks.

Among different fiber access architectures, passive optical network (PON) is considered as the most promising alternative for the last mile connection due to its relatively low cost and resource efficiency. The inherent bursty nature of the user generated traffic results in dynamically changing bandwidth demand on per subscriber basis. In addition, access networks are required to support differentiated quality of service and accommodate multiple service providers. To address these problems we proposed three novel scheduling algorithms to efficiently realize dynamic bandwidth allocation in PON, along with guaranteeing both the priority and fairness of the differentiated services among multiple users and/or service providers. Meanwhile, because of the increasing significance of reliable access to network services, an efficient fault management mechanism needs to be provided in PON. In addition, access networks are very cost sensitive and the cost of protection should be kept as low as possible. Therefore, we proposed three novel cost-effective protection architectures keeping in mind that reliability requirement in access networks should be satisfied at the minimal cost.

Regarding the optical core networks, replacing electronic routers with all-optical switching nodes can offer significant advantages in realizing high capacity networks. Because of the technological limitations for realizing all-optical nodes, the focus is put on the ingenious architecture design. Therefore, we contributed on novel switching node architectures for optical circuit and packet switching networks. Furthermore, we addressed different aspects of routing and wavelength assignment (RWA) problem, which is an important and hard task to be solved in wavelength routed networks. First, we proposed an approach based on the information summary protocol to reduce the large amount of control overhead needed for dissemination of the link state information in the case of adaptive routing. In addition, transparency in optical networks may cause vulnerability to physical layer attacks. To target this critical security related issue, we proposed an RWA solution to minimize the possible reachability of a jamming attack.

Finally, in order to evaluate our ideas we developed two tailor-made simulators based on discrete event driven system for the detailed studies of PON and switched optical networks. Moreover, the proposed tabu search heuristic for our RWA solution was implemented in C++.

Place, publisher, year, edition, pages
Stockholm: KTH , 2009. , 86 p.
Series
Trita-ICT/MAP, 1653-7610
Keyword [en]
fiber access networks, passive optical network, dynamic bandwidth allocation, reliability, switched optical networks, switching node, optical circuit switching, optical packet switching, routing and wavelength assignment, security
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-10348OAI: oai:DiVA.org:kth-10348DiVA: diva2:216181
Public defence
2009-05-08, Sal C1, KTH-Electrum, Isafjordsgatan 22, Kista, Stockholm, Sal C1, KTH-Electrum, Isafjordsgatan 22, Kista, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20100707Available from: 2009-05-08 Created: 2009-05-07 Last updated: 2010-07-08Bibliographically approved
List of papers
1. A novel algorithm for intra-ONU bandwidth allocation in ethernet passive optical networks
Open this publication in new window or tab >>A novel algorithm for intra-ONU bandwidth allocation in ethernet passive optical networks
2005 (English)In: IEEE Communications Letters, ISSN 1089-7798, E-ISSN 1558-2558, Vol. 9, no 9, 850-852 p.Article in journal (Refereed) Published
Abstract [en]

A novel decentralized algorithm is introduced for the intra-ONU bandwidth allocation in an Ethernet Passive Optical Network (EPON). The algorithm is of low computational complexity, and can guarantee both the priority and fairness of the differentiated services. Simulation results are presented and compared with those of two existing bandwidth allocation algorithms.

National Category
Computer and Information Science
Identifiers
urn:nbn:se:kth:diva-14006 (URN)10.1109/LCOMM.2005.1506724 (DOI)000231919200028 ()2-s2.0-27844555359 (Scopus ID)
Note

QC 20100707

Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2016-05-02Bibliographically approved
2. Efficient and fine scheduling algorithm for bandwidth allocation in Ethernet passive optical networks
Open this publication in new window or tab >>Efficient and fine scheduling algorithm for bandwidth allocation in Ethernet passive optical networks
2006 (English)In: IEEE Journal of Selected Topics in Quantum Electronics, ISSN 1077-260X, E-ISSN 1558-4542, Vol. 12, no 4, 653-660 p.Article in journal (Refereed) Published
Abstract [en]

A novel fine scheduling algorithm is introduced for upstream bandwidth allocation in an Ethernet-based passive optical network. This scheduling algorithm consists of an inter optical network unit (ONU) scheduler at the optical line terminal (OLT) and an intra-ONU scheduler at each ONU. In the inter-ONU scheduling, a novel GATE/REPORT approach is introduced to eliminate the unused remainders without transmission delay and maximize the utilization of bandwidth. Our novel intra-ONU scheduler gives fair bandwidth allocation to the queues of different priorities for each user in a hierarchical and decentralized way. Numerical results have shown that our overall scheduling algorithm can fulfill various requirements of delay and throughput for the transmission of multimedia traffic for each end user..

Keyword
dynamic bandwidth allocation, Ethernet passive optical network (EPON), hierarchical scheduling, optical access technologies, unused remainder, ACCESS NETWORK, SERVICE, EPON, PONS
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14007 (URN)10.1109/JSTQE.2006.876607 (DOI)000239745000021 ()2-s2.0-33747242027 (Scopus ID)
Note

QC 20100707

Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2016-06-22Bibliographically approved
3. A Novel Joint Scheduling Algorithm for Multiple Services in 10G EPON
Open this publication in new window or tab >>A Novel Joint Scheduling Algorithm for Multiple Services in 10G EPON
2008 (English)In: Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X, E-ISSN 1996-756X, Vol. 7137Article in journal (Other academic) Published
Abstract [en]

In this paper, we propose and evaluate a novel joint scheduling algorithm for multiple services which can support differentiated services and bandwidth allocation with global priority of different traffic such as Triple-play: voice, video and Internet services. Simulation results show that for the higher priority traffic better delay and jitter performance can be achieved compared with the lower priority traffic.

Keyword
Ethernet passive optical network (EPON), scheduling algorithm, multiple services, global Priority
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14008 (URN)10.1117/12.802623 (DOI)2-s2.0-66749083268 (Scopus ID)
Note

Article number 71370L QC 20100707

Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2016-05-18Bibliographically approved
4. Self-protection scheme against failures of distributed fiber links in an Ethernet passive optical network
Open this publication in new window or tab >>Self-protection scheme against failures of distributed fiber links in an Ethernet passive optical network
2006 (English)In: Journal of Optical Networking, ISSN 1536-5379, Vol. 5, no 9, 662-666 p.Article in journal (Refereed) Published
Abstract [en]

A novel self-protection scheme for an Ethernet passive optical network is introduced and studied at both the physical and the media access control layers. The scheme is simple and fast and can provide 1: 1 protection and automatic traffic restoration against the fiber link failure between a remote node ( RN) and any optical network unit (ONU). Simulation results show that fiber failure does not degrade the transmission performance, and the restoration time depends mainly on the switch time of the physical layer. Our protection scheme saves many long fibers, does not influence other normal ONUs, and requires no active device in the RN.

Keyword
Distributed fiber links; Ethernet passive optical network; Optical network unit (ONU); Remote node (RN)
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14009 (URN)10.1364/JON.5.000662 (DOI)000241946500003 ()2-s2.0-33749476706 (Scopus ID)
Note

QC 20100707

Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2016-04-27Bibliographically approved
5. Analysis of protection schemes in PON compatible with smooth migration from TDM-PON to hybrid WDM/TDM-PON
Open this publication in new window or tab >>Analysis of protection schemes in PON compatible with smooth migration from TDM-PON to hybrid WDM/TDM-PON
2007 (English)In: Journal of Optical Networking, ISSN 1536-5379, Vol. 6, no 5, 514-526 p.Article in journal (Refereed) Published
Abstract [en]

We propose what we believe to be a novel protection scheme compatible with smooth migration from a time-division multiplexing (TDM) passive optical network (PON) to a WDM/TDM-PON. We show that our scheme is very cost effective while keeping connection availability, recovery time, and power budget at an acceptable level. We focus on the protection schemes, overview the existing methods, and introduce a link protection scheme compatible with smooth migration from TDM-PON to hybrid WDM/ TDM-PON. Furthermore, we analyze the cost, connection availability, recovery time, and optical link budget for different protection schemes in order to find the cost-effective solution both for the TDM-PON and hybrid WDM/ TDM- PON. (c) 2007 Optical Society of America.

Keyword
PASSIVE OPTICAL NETWORKS, BANDWIDTH ALLOCATION
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14010 (URN)10.1364/JON.6.000514 (DOI)000249044600011 ()2-s2.0-40249103162 (Scopus ID)
Note
QC 20100707Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2012-02-28Bibliographically approved
6. High utilization of wavelengths and simple interconnection between users in a protection scheme for passive optical networks
Open this publication in new window or tab >>High utilization of wavelengths and simple interconnection between users in a protection scheme for passive optical networks
2008 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 20, no 5-8, 389-391 p.Article in journal (Refereed) Published
Abstract [en]

A novel protection architecture for passive optical networks (PONs) is presented and evaluated. It is based on the cyclic property of arrayed waveguide gratings (AWGs) and the interconnection between two adjacent optical network units. The proposed scheme is compatible with both wavelength-division-multiplexing (WDM) PONs and hybrid WDM/time-division-multiplexing PONs. It is compared with two existing schemes and shown to have several advantages: 1) 50% less wavelengths is needed; 2) the fiber interconnections are simplified; 3) the connection availability is improved by one order of magnitude.

Keyword
hybrid wavelength-division-multiplexing/time-division-multiplexing (WDM/TDM) passive optical network (PON), protection, wavelength-division-multiplexing (WDM), passive optical network (PON)
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14011 (URN)10.1109/LPT.2007.915655 (DOI)000257952800021 ()2-s2.0-40749096828 (Scopus ID)
Note
QC 20100707Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2013-11-19Bibliographically approved
7. Reliability Performance Analysis vs. Deployment Cost of Fiber Access Networks
Open this publication in new window or tab >>Reliability Performance Analysis vs. Deployment Cost of Fiber Access Networks
2008 (English)In: 2008 7TH INTERNATIONAL CONFERENCE ON THE OPTICAL INTERNET (COIN), NEW YORK: IEEE , 2008, 161-162 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper the availability and deployment cost analysis of different fiber access networks is presented. We consider both standard and novel architectures for two deployment scenarios, namely in dense and sparse populated areas referred to as collective and dispersive case respectively. In order to demonstrate the cost efficiency of different access network architectures we introduce a cost-reliability measure CRM parameter. For our calculations we assumed the typical values for component reliability and cost. Furthermore, we assume a decrease of the cost by 5% per year (4% for fiber). Our results reveal that the decrease of component cost does not make any significant difference because burying fiber is the dominating part of the network deployment cost and it does not decrease over the years.

Place, publisher, year, edition, pages
NEW YORK: IEEE, 2008
Series
2008 7TH INTERNATIONAL CONFERENCE ON THE OPTICAL INTERNET (COIN)
Keyword
Optical fiber LAN, protection, reliability, capital expenditures (CAPEX), PASSIVE OPTICAL NETWORKS, PROTECTION SCHEME, HOME
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14012 (URN)000266977800079 ()2-s2.0-67649540690 (Scopus ID)
Conference
2008 7th International Conference on the Optical Internet, COIN 2008; Tokyo; Japan; 14 October 2008 through 16 October 2008
Note

QC 20100707

Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2014-12-16Bibliographically approved
8. Novel Architectures of Asynchronous Optical Packet Switch
Open this publication in new window or tab >>Novel Architectures of Asynchronous Optical Packet Switch
2007 (English)In: 33rd European Conference and Exhibition on Optical Communication ECOC’07, 2007, IEEE conference proceedings, 2007Conference paper, Published paper (Other academic)
Abstract [en]

We propose two asynchronous optical packet switch architectures, with efficient contention resolution based on controllable optical buffers and tunable wavelength converters TWCs. Providing a few shared optical buffers significantly boosts the performance obtained by TWCs.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2007
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14013 (URN)2-s2.0-84931032637 (Scopus ID)978-380073042-1 (ISBN)
Conference
2007 33rd European Conference and Exhibition of Optical Communication, ECOC 2007
Note

QC 20100707

QC 20151210

Available from: 2010-07-07 Created: 2010-07-07 Last updated: 2015-12-10Bibliographically approved
9. Novel Node Architectures for Wavelength-Routed WDM Networks with Wavelength Conversion Capability
Open this publication in new window or tab >>Novel Node Architectures for Wavelength-Routed WDM Networks with Wavelength Conversion Capability
2008 (English)In: 34th European Conference and Exhibition on Optical Communication ECOC’08, 2008, 2008Conference paper, Published paper (Other academic)
Abstract [en]

We present and evaluate two novel node architectures based on optical switch matrices and wavelength converters (WCs). Relatively small and cheap switches are required while WCs efficiently improve blocking probability

Keyword
Blocking probability; Photonics; Switches; Wavelength division multiplexing
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14014 (URN)10.1109/ECOC.2008.4729519 (DOI)000300411200439 ()2-s2.0-60449119908 (Scopus ID)
Conference
34th European Conference and Exhibition on Optical Communication ECOC’08, 2008
Note

Article number 4729519 QC 20100708

Available from: 2010-07-08 Created: 2010-07-08 Last updated: 2012-09-26Bibliographically approved
10. Dynamic routing based on information summary-LSA in WDM networks with wavelength conversion
Open this publication in new window or tab >>Dynamic routing based on information summary-LSA in WDM networks with wavelength conversion
2008 (English)In: Proceedings of 2008 10th Anniversary International Conference on Transparent Optical Networks, ICTON, NEW YORK: IEEE , 2008, 50-54 p.Chapter in book (Other academic)
Abstract [en]

This Study investigates the use of information Summary (IS) applied to the advertised available resources to reduce the amount of link state advertisement (LSA) overhead, which is necessary to achieve distributed dynamic routing in WDM networks,. As illustrated in the Study, if carefully designed, the resulting IS-LSA protocol can significantly contain the size of the advertised data set without excessively affecting the network performance, i.e., the blocking probability caused by routing decisions based on incomplete link state information.

Place, publisher, year, edition, pages
NEW YORK: IEEE, 2008
Keyword
dynamic routing, information summary, opaque link statement advertisement (LSA), wavelength conversion, WDM network, ALL-OPTICAL NETWORKS, ASSIGNMENT
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14015 (URN)10.1109/ICTON.2008.4598653 (DOI)000259486500014 ()2-s2.0-52149113067 (Scopus ID)978-142442625-6 (ISBN)
Note

QC 20100708

Available from: 2010-07-08 Created: 2010-07-08 Last updated: 2016-06-01Bibliographically approved
11. A tabu search algorithm for attack-aware lightpath routing
Open this publication in new window or tab >>A tabu search algorithm for attack-aware lightpath routing
2008 (English)In: ICTON 2008: PROCEEDINGS OF 2008 10TH ANNIVERSARY INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS, VOL 3 / [ed] Marciniak, M, NEW YORK: IEEE , 2008, 42-45 p.Conference paper, Published paper (Other academic)
Abstract [en]

Attacks in Transparent Optical Networks present a serious security threat to Successful network operation due to the high data rates involved and the vulnerabilities associated with transparency. Typical physical layer attacks can involve injecting high-powered jamming signals on legitimate data channels to exploit Vulnerabilities in optical components Such as crosstalk in switches and fibers, and gain competition in amplifiers. To assure a certain quality of service in the network, we propose a novel approach which considers Such security threats during the network planning process. More specifically, we propose a tabu search heuristic aimed to perform lightpath routing in Such a way as to minimize the possible 'reachability' of a jamming attack with respect to gain competition and inter-channel crosstalk. In this way we limit the worst case scenario which can potentially be caused by such an attack. We tested the algorithm on the 14-node NSF network and compare with shortest path routing. The algorithm not only yields better attack protection, but reduces lightpath congestion and minimizes the upper bound on the number of wavelengths needed for wavelength assignment.

Place, publisher, year, edition, pages
NEW YORK: IEEE, 2008
Keyword
routing and wavelength assignment, attacks, transparent optical networks, tabu search, OPTICAL NETWORKS, WAVELENGTH ASSIGNMENT
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-14016 (URN)10.1109/ICTON.2008.4598651 (DOI)000259486500012 ()2-s2.0-52149120734 (Scopus ID)
Conference
10th International Conference on Transparent Optical Networks. Athens, GREECE. JUN 22-26, 2008
Note
QC 20100708Available from: 2010-07-08 Created: 2010-07-08 Last updated: 2012-02-23Bibliographically approved

Open Access in DiVA

fulltext(1567 kB)4571 downloads
File information
File name FULLTEXT01.pdfFile size 1567 kBChecksum SHA-512
1f22adc64ba6d89420f93394d8596b1d2676e23def0bb8125c73f592618227ac0caa53a69731bc8fbaf063e58b056074456f11a1038b9cf952f6ade5ef2cad6c
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Chen, Jiajia
By organisation
Microelectronics and Applied Physics, MAP
Telecommunications

Search outside of DiVA

GoogleGoogle Scholar
Total: 4571 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 1038 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf