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Språkvelger

Norsk

Norvald Stol

Norvald Stol

Professor
Department of Information Security and Communication Technology
Faculty of Information Technology and Electrical Engineering

norvald.stol@ntnu.no
+4773592133 Elektro B, B216, Gløshaugen
About Publications Teaching Media

About

Research area

My research is in the area of networking, with special emphasis on optical networks. Some important focus areas:

  • (Optical) Network architectures 
  • Switching
  • Routing
  • Signalling and control 
  • Performance and dependability modelling
  • Quality of Service
  • Integrated hybrid optical switching architectures
  • Passive Optical (access) Networks (PONs) 

Background

  • Professor Department of information security and communication technology, 2017 - 
  • Head of Department, Telematics, NTNU, 2005 - 2009.
  • Associate professor Department of telematics, NTNU, 1998 - 2017.
  • Dr.ing. degree Department of telematics, NTNU in 1997.
  • Research scientist, SINTEF, 1984 - 1998.
  • Siv.ing. (MSc) degree Department of telematics, NTNU, 1983.

Research area: Networks

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2021

  • Chatterjee, Bijoy Chand; Stol, Norvald; Oki, Eiji. (2021) Impairment-aware spectrum allocation in elastic optical networks: A dispersion-sensitive approach. Optical fiber technology (Print). volum 61.
    Academic article

2018

  • Chatterjee, Bijoy Chand; Sarma, Nityananda; Mitra, Abhijit; Srivastava, Anand; Stol, Norvald; Oki, Eiji. (2018) Performance of Dispersion-Reduced Wavelength Assignment in Wavelength-Routed Optical Networks. International Conference on Transparent Optical Networks. volum 2018-July.
    Academic article

2017

  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2017) Economic, Dissatisfaction and Reputation Risks of Hardware and Software Failures in PONs. IEEE/ACM Transactions on Networking. volum 25 (2).
    Academic article

2016

  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2016) Managing software failures and capacity assignment to control interval availability in PONs. Proceedings of 2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM).
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald; Chi, Hao; Li, Qiliang. (2016) Optimized design of delay-line buffers with an input-feedback mechanism for asynchronous optical packet switching networks. Applied Optics. volum 55 (31).
    Academic article

2015

  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2015) CAPEX and OPEX simulation study of cost-efficient protection mechanisms in passive optical networks. Optical Switching and Networkning Journal. volum 17.
    Academic article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2015) Influence of Software and Hardware Failures with Imperfect Fault Coverage on PONs OPEX. Proceedings of the 19th International Conference on Optical Network Design and Modeling (ONDM 2015).
    Academic chapter/article

2014

  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) Failure Impact, Availability and Cost Analysis of PONs Based on a Network Geometric Model. Guangzi xuebao. volum 43 (S1).
    Academic article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) OPEX simulation study of PONs based on network geometric and Markov cost models. Proceedings of 2014 International Conference on Optical Network Design and Modeling (ONDM).
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) On the Impact of Software Failures on Time Division Multiplexed Passive Optical Networks Dependability. Proceedings of RNDM 2014 6th International Workshop on Reliable Networks Design and Modeling.
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) Protecting PONs: A failure impact, availability and cost perspective based on a geometric model. Proceedings of 10TH INTERNATIONAL CONFERENCE ON DESIGN OF RELIABLE COMMUNICATION NETWORKS DRCN 2014.
    Academic chapter/article
  • Savi, Michele; Øverby, Harald; Stol, Norvald; Raffaelli, Carla. (2014) Cost evolution model to design optical switching fabrics with wavelength converters. Computer Networks.
    Academic article
  • Veisllari, Raimena; Stol, Norvald; Bjørnstad, Steinar; Raffaelli, Carla. (2014) Scalability Analysis of SDN-controlled Optical Ring MAN with Hybrid Traffic. ICC 2014 - Proceedings of 2014 IEEE International Conference on Communications.
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2014) Blocking probabilities in Mulit-service systems with preemptive scheduling. International Conference on Communication Theory, Reliability, and Quality of Service.
    Academic article
  • Yang, Shuna; Stol, Norvald. (2014) Performance and cost comparison of concentrated and unconcentrated optical packet switches. 2014 IEEE 15th International Conference on High Performance Switching and Routing (HPSR).
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2014) Performance modeling in multi-service communications systems with preemptive scheduling. Journal of Communications. volum 9 (6).
    Academic article
  • Yang, Shuna; Stol, Norvald. (2014) Design of delay-line buffers for asynchronous optical packet switched networks. Telecommunication networks and application conference(ATNAC)Australian.
    Academic chapter/article

2013

  • Yang, Shuna; Stol, Norvald; Øverby, Harald. (2013) A novel approach in modeling multi-service optical packet switched networks with the preemptive drop policy. 17th International Conference on Optical Networking Design and Modeling.
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Savi, Michele; Stol, Norvald. (2013) Protecting real-time traffic service in a 3-LIHON hybrid node. 17th International Conference on Optical Networking Design and Modeling.
    Academic chapter/article
  • Savi, Michele; Øvreby, Harald; Stol, Norvald; Raffaelli, Carla. (2013) Sharing Wavelength Converters in Optical Switching Fabrics: When, How, and Which Kind of?. 17th International Conference on Optical Networking Design and Modeling.
    Academic chapter/article
  • Veisllari, Raimena; Bjørnstad, Steinar; Bozorgebrahimi, Kurosh; Stol, Norvald. (2013) Providing Ethernet Circuit Quality of Service and High Bandwidth Efficiency through Fusion Networking. Norsk informatikkonferanse NIK 2013, Universitetet i Stavanger, 18. - 20.november 2013.
    Academic chapter/article

2012

  • Savi, Michele; Raffaelli, Carla; Stol, Norvald; Leli, Gaia. (2012) Performance Assessment of Congestion Resolution Scheduling in Asynchronous 3-Level Integrated Hybrid Optical Network (A-3LIHON). XVth InternationalTelecommunications Network Strategy and Planning Symposium (NETWORKS), 2012.
    Academic chapter/article
  • Savi, Michele; Stol, Norvald; Øverby, Harald; Raffaelli, Carla. (2012) Loss, Complexity and Cost Analysis of an Optical Switching Fabric Using Fixed Converters. 16th International Conference on Optical Network Design and Modeling (ONDM), 2012.
    Academic chapter/article
  • Savi, Michele; Stol, Norvald; Øverby, Harald; Raffaelli, Carla. (2012) Contention Resolution Using Parametric Wavelength Converters: Performance and Cost Analysis. 2012 IEEE Global Telecommunications Conference -GLOBECOM 2012.
    Academic chapter/article
  • Savi, Michele; Øverby, Harald; Stol, Norvald; Raffaelli, Carla. (2012) Contention Resolution Using Parametric Wavelength Converters: Performance and Cost Analysis. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article
  • Veisllari, Raimena; Bjørnstad, Steinar; Stol, Norvald. (2012) A rate-adaptive segmentation algorithm for integrated hybrid optical networks. 2012 Australasian Telecommunication Networks and Applications Conference (ATNAC).
    Academic chapter/article
  • Veisllari, Raimena; Bjørnstad, Steinar; Stol, Norvald. (2012) Scheduling techniques in an integrated hybrid node with electronic buffers. 16th International Conference on Optical Network Design and Modeling (ONDM), 2012.
    Academic chapter/article
  • Veisllari, Raimena; Stol, Norvald; Bjørnstad, Steinar. (2012) GMPLS-based Multi-Region Control Plane for Integrated Hybrid Optical Networks. 9th International Conference on High-capacity Optical Networks & Emerging/Enabling Technologies.
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2012) Architecture and Performance Evaluation of the Edge Router for an Integrated Hybrid Optical Network. First IEEE International Conference on Communications in China: Optical Networks and Systems (ONS).
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2012) Packet Loss Bounds for Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article
  • Yang, Shuna; Stol, Norvald. (2012) Packet Loss Bounds for Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. 2012 IEEE Global Telecommunications Conference -GLOBECOM 2012.
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald; Øverby, Harald. (2012) Performance Modelling of Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. Proceedings 17th European Conference on network and Optical Communication, June 20-22, 2012, Catalonia Spain.
    Academic chapter/article

2011

  • Stol, Norvald; Raffaelli, Carla; Savi, Michele. (2011) 3-Level Integrated Hybrid Optical Network (3LIHON) to Meet Future QoS Requirements. 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.
    Academic chapter/article
  • Stol, Norvald; Savi, Michele; Raffaelli, Carla. (2011) 3-Level Integrated Hybrid Optical Network (3LIHON) to Meet Future QoS Requirements. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article

2010

  • Kimsas, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2010) Improving performance in the OpMiGua hybrid network employing the network layer packet redundancy scheme. IET Communications. volum 4 (3).
    Academic article
  • Stol, Norvald; Raffaelli, Carla; Savi, Michele; Cincotti, Gabriella. (2010) Optical Codes for Packet Detection in the OpMiGua Switch Architecture. Proceedings "Integrated Photonics Research, Silicon and Nano Photonics (IPR)/Photonics in Switching (PS)".
    Academic chapter/article

2009

  • Kimsas, Andreas; Øverby, Harald; Stol, Norvald. (2009) Analysis of a bufferless OpMiGua Node. Proceedings of the 5th advanced international conference on telecommunications.
    Academic chapter/article

2007

  • Bjørnstad, Steinar; Nord, Martin; Eriksen, Lars Erik; Tuft, Vegard Larsen; Hjelme, Dag Roar; Stol, Norvald; Kimsas, Andreas; Sudbo, A. (2007) Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed. 33rd European Conference and Exhibition on Optical Communication Conference.
    Academic chapter/article
  • Kimsas, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2007) Reservation Techniques in an OpMiGua node. 11th International IFIP TC6 Conference, ONDM 2007.
    Academic chapter/article

2006

  • Kimsås, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2006) Protection Using Redundancy in a Hybrid Circuit/Packet Node Design. proceedings of the 32th European Conference on Optical Communications.
    Academic chapter/article
  • Kimsås, Andreas; Øverby, Harald; Bjørnstad, Steinar; Stol, Norvald. (2006) Performance in a failure situation of an OpMiGua packet switch with internal blocking. Proceedings of the 8th International Conference on Transparent Optical Networks, volume 3.
    Academic chapter/article
  • Li, Frank Y.; Stol, Norvald; Helvik, Bjarne E.. (2006) Conformance Deterioration in QoS Networks: Phenomenon, Analysis and Elimination. Computer Networks. volum 50 (12).
    Academic article
  • Stol, Norvald; Øverby, Harald; Bjørnstad, Steinar; Kimsås, Andreas; Mykkeltveit, Anders. (2006) Differentiated Survivability in the OpMiGua Hybrid Optical Network. Proceedings of the 10th Conference on Optical Network Design and Modelling.
    Academic chapter/article
  • Bjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2006) A Packet-Switched Hybrid Optical Network with Service Guarantees. IEEE Journal on Selected Areas in Communications. volum 24 (8).
    Academic article
  • Li, Frank; Stol, Norvald; Helvik, Bjarne Emil. (2006) Conformance deterioration in QoS networks: Phenomenon, analysis and elimination. Computer Networks. volum 50 (12).
    Academic article
  • Nord, Martin; Bjørnstad, Steinar; Tuft, Vegard; Kimsås, Andreas; Hjelme, Dag Roar; Eriksen, Lars Erik; Olsen, Torodd; Øverby, Harald; Sudbø, Aasmund Sveinung; Stol, Norvald; Austad, Oddgeir; Kåråsen, Anne-Grete; Millstein, Geir. (2006) The OpMiGua project - final report. 2006. Telenor FoU report (Rxx).
    Report
  • Øverby, Harald; Stol, Norvald. (2006) QoS Differentiation in Asynchronous Bufferless Optical Packet Switched Networks. Wireless networks. volum 12 (3).
    Academic article
  • Øverby, Harald; Stol, Norvald; Nord, Martin. (2006) Evaluation of QoS Differentiation Mechanisms in Asynchronous Bufferless Optical Packet Switched Networks. IEEE Communications Magazine. volum 44 (8).
    Academic article

2005

  • Bjørnstad, Steinar; Nord, Martin; Olsen, Torodd; Hjelme, Dag Roar; Stol, Norvald. (2005) Burst, packet and hybrid switching in the optical core network. Telektronikk. volum 101 (2).
    Academic article
  • Bjørnstad, Steinar; Sudbø, Aasmund; Andreassen, Ragnar; Zouganelli, Evi; Stol, Norvald; Helvik, Bjarne Emil. (2005) Node redundancy in optical burst and packet switched networks. Proceedings of the 7th International Conference on Transparent Optical networks (ICTON) in Barcelona, Vol. 1.
    Academic chapter/article
  • Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald; Hjelme, Dag Roar. (2005) Protecting guaranteed service traffic in an OpMiGua hybrid network. 31st European Conference on Optical Communications - ECOC 2005 - Proceedings.
    Academic chapter/article
  • Zouganeli, Evi; Solheim, Astrid; Kjølnesberg, Heidi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Sudbø, Aasmund; Helvik, Bjarne Emil. (2005) Techno-Economic Evaluation of Optical Packet/Burst Switching. IEE Conferance publication.
    Academic article
  • Øverby, Harald; Stol, Norvald; Bjørnstad, Steinar. (2005) Dependability differentiation in Optical Packet Switched Networks. Proceedings of the 7th International Conference on Transparent Optical networks (ICTON) in Barcelona, Vol. 1.
    Academic chapter/article
  • Zouganeli, Evi; Andreassen, Ragnar Ø.; Boning, Feng; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund; Helvik, Bjarne Emil; Haugen, Rolf B.. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Zouganeli, Evi; Andreassen, Ragnar Ø; Feng, Boning; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund; Helvik, Bjarne E.; Haugen, Rolf. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Zouganeli, Evi; Andreassen, Ragnar Øivind; Feng, Boning; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund; Helvik, Bjarne. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Zouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund Sveinung; Helvik, Bjarne; Haugen, Rolf B. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2005) Providing absolute QoS in asynchronous bufferless optical packet/burst switched networks with the adaptive preemptive drop policy. Computer Communications. volum 28.
    Academic article

2004

  • Nord, Martin; Øverby, Harald; Stol, Norvald. (2004) Packet Loss Rate- and Jitter Differentiating QoS Schemes for Asynchronous Optical Packet Switches. Journal of Optical Networking. volum 3 (12).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2004) Effects of the switching time in OPS/OBS networks. Chinese Optics Letters (COL). volum 2 (3).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2004) Quality of Service in Asynchronous Bufferless Optical Packet Switched Networks. Telecommunications Systems. volum 27 (2-4).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2004) Effects of bursty traffic in service differentiated Optical Packet Switched networks. Optics Express. volum 12 (3).
    Academic article

2003

  • Fallmyr, Terje; Hadjerrouit, Said; Langmyhr, Dag; Lingjærde, Ole Chr.; Manne, Fredrik; Midtstraum, Roger; Stol, Norvald; Strøm, Torbjørn; Yu, Weihai. (2003) Norsk Informatikkonferanse NIK'2003. Tapir Akademisk Forlag. 2003. ISBN 82-519-1916-9. Norsk Informatikkonferanse.
    Scientific anthology

2002

  • Stol, Norvald. (2002) Norsk Informatikkonferanse 2002. Tapir Akademisk Forlag. 2002. ISBN 82-91116-45-8.
    Scientific anthology
  • Stol, Norvald; Strøm, Torbjørn; Fallmyr, Terje; Haddjerroudit, Sissel; Langmyhr, Dag; Lingjærde, Ole Chr.; Manne, Fredrik; Midtstraum, Roger; Yu, Weihai. (2002) Norsk Informatikkonferanse NIK'2002. 2002. ISBN 82-91116-45-8.
    Report
  • Li, Frank Young; Stol, Norvald. (2002) A study on traffic shaping, policing and conformance deterioration for QoS contracted networks. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article
  • Li, Frank Young; Stol, Norvald. (2002) QoS provisioning using traffic shaping and policing in 3rd-generation wireless networks. IEEE Wireless Communications and Networking Conference.
    Academic article
  • Stol, Norvald. (2002) Norsk Informatikkonferanse NIK'2002. Tapir Akademisk Forlag. 2002. ISBN 82-91116-45-8.
    Scientific anthology

2001

  • Stol, Norvald; Weihai, Yu; Bjørnestad, Solveig; Fallmyr, Terje; Hadjerrouit, Said; Langmyr, Dag; Lysne, Olav; Manne, Fredrik; Natvig, Lasse. (2001) Norsk Informatikkonferanse, NIK'2001. 2001. ISBN 82-90487-96-7.
    Nonfiction book
  • Stol, Norvald; Yu, Weihai; Bjørnestad, Solveig; Fallmyr, Terje; Hajdrrouit, Said; Langmyhr, Dag. (2001) Proceedings of Norsk informatikkonferanse - NIK'2001. Tapir Akademisk Forlag. 2001. ISBN 82-90487-96-7.
    Scientific anthology
  • Li, Frank Young; Stol, Norvald. (2001) A priority-oriented call admission control paradigm with QoS renegotiation for multimedia services in UMTS. IEEE Vehicular Technology Conference (VTC) Proceedings.
    Academic article
  • Stol, Norvald. (2001) NIK 2001. 2001. ISBN 82-90487-96-7.
    Scientific anthology

2000

  • Munthe-Kaas, Ellen; Fallmyr, Terje; Bjørnestad, Solveig; Hadjerrouit, Said; Krogdahl, Stein; Manne, Fredrik; Natvig, Lasse; Stol, Norvald; Yu, Weihai. (2000) Norsk Informatikkonferanse NIK'2000. Tapir Akademisk Forlag. 2000. ISBN 82-7314-308-2.
    Scientific anthology

1997

  • Helvik, Bjarne Emil; Stol, Norvald. (1997) QoS differentiation in ATM networks : a case study. Telektronikk. volum 93 (1).
    Academic article
  • Stol, Norvald. (1997) Fluid flow based modelling and analysis of integrated services networks. 1997. ISBN 82-471-0046-0. Doktor ingeniøravhandling (1997:17).
    PhD thesis

1996

  • Helvik, Bjarne Emil; Stol, Norvald. (1996) QoS differentiation in ATM networks : an initial study. 1996. ISBN 82-595-9700-4. SINTEF Rapport (STF40 A).
    Report
  • Stol, Norvald; Helvik, Bjarne Emil. (1996) ATM traffic experiments : a laboratory study of high-speed-data source characteristics on ATM switching performance. 1996. ISBN 82-595-9698-9. SINTEF Rapport (STF40 A).
    Report

Scientific articles

  • Chatterjee, Bijoy Chand; Stol, Norvald; Oki, Eiji. (2021) Impairment-aware spectrum allocation in elastic optical networks: A dispersion-sensitive approach. Optical fiber technology (Print). volum 61.
    Academic article
  • Chatterjee, Bijoy Chand; Sarma, Nityananda; Mitra, Abhijit; Srivastava, Anand; Stol, Norvald; Oki, Eiji. (2018) Performance of Dispersion-Reduced Wavelength Assignment in Wavelength-Routed Optical Networks. International Conference on Transparent Optical Networks. volum 2018-July.
    Academic article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2017) Economic, Dissatisfaction and Reputation Risks of Hardware and Software Failures in PONs. IEEE/ACM Transactions on Networking. volum 25 (2).
    Academic article
  • Yang, Shuna; Stol, Norvald; Chi, Hao; Li, Qiliang. (2016) Optimized design of delay-line buffers with an input-feedback mechanism for asynchronous optical packet switching networks. Applied Optics. volum 55 (31).
    Academic article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2015) CAPEX and OPEX simulation study of cost-efficient protection mechanisms in passive optical networks. Optical Switching and Networkning Journal. volum 17.
    Academic article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) Failure Impact, Availability and Cost Analysis of PONs Based on a Network Geometric Model. Guangzi xuebao. volum 43 (S1).
    Academic article
  • Savi, Michele; Øverby, Harald; Stol, Norvald; Raffaelli, Carla. (2014) Cost evolution model to design optical switching fabrics with wavelength converters. Computer Networks.
    Academic article
  • Yang, Shuna; Stol, Norvald. (2014) Blocking probabilities in Mulit-service systems with preemptive scheduling. International Conference on Communication Theory, Reliability, and Quality of Service.
    Academic article
  • Yang, Shuna; Stol, Norvald. (2014) Performance modeling in multi-service communications systems with preemptive scheduling. Journal of Communications. volum 9 (6).
    Academic article
  • Savi, Michele; Øverby, Harald; Stol, Norvald; Raffaelli, Carla. (2012) Contention Resolution Using Parametric Wavelength Converters: Performance and Cost Analysis. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article
  • Yang, Shuna; Stol, Norvald. (2012) Packet Loss Bounds for Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article
  • Stol, Norvald; Savi, Michele; Raffaelli, Carla. (2011) 3-Level Integrated Hybrid Optical Network (3LIHON) to Meet Future QoS Requirements. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article
  • Kimsas, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2010) Improving performance in the OpMiGua hybrid network employing the network layer packet redundancy scheme. IET Communications. volum 4 (3).
    Academic article
  • Li, Frank Y.; Stol, Norvald; Helvik, Bjarne E.. (2006) Conformance Deterioration in QoS Networks: Phenomenon, Analysis and Elimination. Computer Networks. volum 50 (12).
    Academic article
  • Bjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2006) A Packet-Switched Hybrid Optical Network with Service Guarantees. IEEE Journal on Selected Areas in Communications. volum 24 (8).
    Academic article
  • Li, Frank; Stol, Norvald; Helvik, Bjarne Emil. (2006) Conformance deterioration in QoS networks: Phenomenon, analysis and elimination. Computer Networks. volum 50 (12).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2006) QoS Differentiation in Asynchronous Bufferless Optical Packet Switched Networks. Wireless networks. volum 12 (3).
    Academic article
  • Øverby, Harald; Stol, Norvald; Nord, Martin. (2006) Evaluation of QoS Differentiation Mechanisms in Asynchronous Bufferless Optical Packet Switched Networks. IEEE Communications Magazine. volum 44 (8).
    Academic article
  • Bjørnstad, Steinar; Nord, Martin; Olsen, Torodd; Hjelme, Dag Roar; Stol, Norvald. (2005) Burst, packet and hybrid switching in the optical core network. Telektronikk. volum 101 (2).
    Academic article
  • Zouganeli, Evi; Solheim, Astrid; Kjølnesberg, Heidi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Sudbø, Aasmund; Helvik, Bjarne Emil. (2005) Techno-Economic Evaluation of Optical Packet/Burst Switching. IEE Conferance publication.
    Academic article
  • Zouganeli, Evi; Andreassen, Ragnar Ø.; Boning, Feng; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund; Helvik, Bjarne Emil; Haugen, Rolf B.. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Zouganeli, Evi; Andreassen, Ragnar Ø; Feng, Boning; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund; Helvik, Bjarne E.; Haugen, Rolf. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Zouganeli, Evi; Andreassen, Ragnar Øivind; Feng, Boning; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund; Helvik, Bjarne. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Zouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Stol, Norvald; Kjønsberg, Heidi; Sudbø, Aasmund Sveinung; Helvik, Bjarne; Haugen, Rolf B. (2005) Why bother with optical packets? An evaluation of the viability of optical packet/burst switching. Telektronikk. volum 101 (2).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2005) Providing absolute QoS in asynchronous bufferless optical packet/burst switched networks with the adaptive preemptive drop policy. Computer Communications. volum 28.
    Academic article
  • Nord, Martin; Øverby, Harald; Stol, Norvald. (2004) Packet Loss Rate- and Jitter Differentiating QoS Schemes for Asynchronous Optical Packet Switches. Journal of Optical Networking. volum 3 (12).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2004) Effects of the switching time in OPS/OBS networks. Chinese Optics Letters (COL). volum 2 (3).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2004) Quality of Service in Asynchronous Bufferless Optical Packet Switched Networks. Telecommunications Systems. volum 27 (2-4).
    Academic article
  • Øverby, Harald; Stol, Norvald. (2004) Effects of bursty traffic in service differentiated Optical Packet Switched networks. Optics Express. volum 12 (3).
    Academic article
  • Li, Frank Young; Stol, Norvald. (2002) A study on traffic shaping, policing and conformance deterioration for QoS contracted networks. GLOBECOM - conference record / IEEE Global Telecommunications Conference.
    Academic article
  • Li, Frank Young; Stol, Norvald. (2002) QoS provisioning using traffic shaping and policing in 3rd-generation wireless networks. IEEE Wireless Communications and Networking Conference.
    Academic article
  • Li, Frank Young; Stol, Norvald. (2001) A priority-oriented call admission control paradigm with QoS renegotiation for multimedia services in UMTS. IEEE Vehicular Technology Conference (VTC) Proceedings.
    Academic article
  • Helvik, Bjarne Emil; Stol, Norvald. (1997) QoS differentiation in ATM networks : a case study. Telektronikk. volum 93 (1).
    Academic article

Books

  • Fallmyr, Terje; Hadjerrouit, Said; Langmyhr, Dag; Lingjærde, Ole Chr.; Manne, Fredrik; Midtstraum, Roger; Stol, Norvald; Strøm, Torbjørn; Yu, Weihai. (2003) Norsk Informatikkonferanse NIK'2003. Tapir Akademisk Forlag. 2003. ISBN 82-519-1916-9. Norsk Informatikkonferanse.
    Scientific anthology
  • Stol, Norvald. (2002) Norsk Informatikkonferanse 2002. Tapir Akademisk Forlag. 2002. ISBN 82-91116-45-8.
    Scientific anthology
  • Stol, Norvald. (2002) Norsk Informatikkonferanse NIK'2002. Tapir Akademisk Forlag. 2002. ISBN 82-91116-45-8.
    Scientific anthology
  • Stol, Norvald; Weihai, Yu; Bjørnestad, Solveig; Fallmyr, Terje; Hadjerrouit, Said; Langmyr, Dag; Lysne, Olav; Manne, Fredrik; Natvig, Lasse. (2001) Norsk Informatikkonferanse, NIK'2001. 2001. ISBN 82-90487-96-7.
    Nonfiction book
  • Stol, Norvald; Yu, Weihai; Bjørnestad, Solveig; Fallmyr, Terje; Hajdrrouit, Said; Langmyhr, Dag. (2001) Proceedings of Norsk informatikkonferanse - NIK'2001. Tapir Akademisk Forlag. 2001. ISBN 82-90487-96-7.
    Scientific anthology
  • Stol, Norvald. (2001) NIK 2001. 2001. ISBN 82-90487-96-7.
    Scientific anthology
  • Munthe-Kaas, Ellen; Fallmyr, Terje; Bjørnestad, Solveig; Hadjerrouit, Said; Krogdahl, Stein; Manne, Fredrik; Natvig, Lasse; Stol, Norvald; Yu, Weihai. (2000) Norsk Informatikkonferanse NIK'2000. Tapir Akademisk Forlag. 2000. ISBN 82-7314-308-2.
    Scientific anthology

Part of book/report

  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2016) Managing software failures and capacity assignment to control interval availability in PONs. Proceedings of 2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM).
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2015) Influence of Software and Hardware Failures with Imperfect Fault Coverage on PONs OPEX. Proceedings of the 19th International Conference on Optical Network Design and Modeling (ONDM 2015).
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) OPEX simulation study of PONs based on network geometric and Markov cost models. Proceedings of 2014 International Conference on Optical Network Design and Modeling (ONDM).
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) On the Impact of Software Failures on Time Division Multiplexed Passive Optical Networks Dependability. Proceedings of RNDM 2014 6th International Workshop on Reliable Networks Design and Modeling.
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Stol, Norvald. (2014) Protecting PONs: A failure impact, availability and cost perspective based on a geometric model. Proceedings of 10TH INTERNATIONAL CONFERENCE ON DESIGN OF RELIABLE COMMUNICATION NETWORKS DRCN 2014.
    Academic chapter/article
  • Veisllari, Raimena; Stol, Norvald; Bjørnstad, Steinar; Raffaelli, Carla. (2014) Scalability Analysis of SDN-controlled Optical Ring MAN with Hybrid Traffic. ICC 2014 - Proceedings of 2014 IEEE International Conference on Communications.
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2014) Performance and cost comparison of concentrated and unconcentrated optical packet switches. 2014 IEEE 15th International Conference on High Performance Switching and Routing (HPSR).
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2014) Design of delay-line buffers for asynchronous optical packet switched networks. Telecommunication networks and application conference(ATNAC)Australian.
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald; Øverby, Harald. (2013) A novel approach in modeling multi-service optical packet switched networks with the preemptive drop policy. 17th International Conference on Optical Networking Design and Modeling.
    Academic chapter/article
  • Fernandez Fernandez, Alvaro; Savi, Michele; Stol, Norvald. (2013) Protecting real-time traffic service in a 3-LIHON hybrid node. 17th International Conference on Optical Networking Design and Modeling.
    Academic chapter/article
  • Savi, Michele; Øvreby, Harald; Stol, Norvald; Raffaelli, Carla. (2013) Sharing Wavelength Converters in Optical Switching Fabrics: When, How, and Which Kind of?. 17th International Conference on Optical Networking Design and Modeling.
    Academic chapter/article
  • Veisllari, Raimena; Bjørnstad, Steinar; Bozorgebrahimi, Kurosh; Stol, Norvald. (2013) Providing Ethernet Circuit Quality of Service and High Bandwidth Efficiency through Fusion Networking. Norsk informatikkonferanse NIK 2013, Universitetet i Stavanger, 18. - 20.november 2013.
    Academic chapter/article
  • Savi, Michele; Raffaelli, Carla; Stol, Norvald; Leli, Gaia. (2012) Performance Assessment of Congestion Resolution Scheduling in Asynchronous 3-Level Integrated Hybrid Optical Network (A-3LIHON). XVth InternationalTelecommunications Network Strategy and Planning Symposium (NETWORKS), 2012.
    Academic chapter/article
  • Savi, Michele; Stol, Norvald; Øverby, Harald; Raffaelli, Carla. (2012) Loss, Complexity and Cost Analysis of an Optical Switching Fabric Using Fixed Converters. 16th International Conference on Optical Network Design and Modeling (ONDM), 2012.
    Academic chapter/article
  • Savi, Michele; Stol, Norvald; Øverby, Harald; Raffaelli, Carla. (2012) Contention Resolution Using Parametric Wavelength Converters: Performance and Cost Analysis. 2012 IEEE Global Telecommunications Conference -GLOBECOM 2012.
    Academic chapter/article
  • Veisllari, Raimena; Bjørnstad, Steinar; Stol, Norvald. (2012) A rate-adaptive segmentation algorithm for integrated hybrid optical networks. 2012 Australasian Telecommunication Networks and Applications Conference (ATNAC).
    Academic chapter/article
  • Veisllari, Raimena; Bjørnstad, Steinar; Stol, Norvald. (2012) Scheduling techniques in an integrated hybrid node with electronic buffers. 16th International Conference on Optical Network Design and Modeling (ONDM), 2012.
    Academic chapter/article
  • Veisllari, Raimena; Stol, Norvald; Bjørnstad, Steinar. (2012) GMPLS-based Multi-Region Control Plane for Integrated Hybrid Optical Networks. 9th International Conference on High-capacity Optical Networks & Emerging/Enabling Technologies.
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2012) Architecture and Performance Evaluation of the Edge Router for an Integrated Hybrid Optical Network. First IEEE International Conference on Communications in China: Optical Networks and Systems (ONS).
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald. (2012) Packet Loss Bounds for Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. 2012 IEEE Global Telecommunications Conference -GLOBECOM 2012.
    Academic chapter/article
  • Yang, Shuna; Stol, Norvald; Øverby, Harald. (2012) Performance Modelling of Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. Proceedings 17th European Conference on network and Optical Communication, June 20-22, 2012, Catalonia Spain.
    Academic chapter/article
  • Stol, Norvald; Raffaelli, Carla; Savi, Michele. (2011) 3-Level Integrated Hybrid Optical Network (3LIHON) to Meet Future QoS Requirements. 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.
    Academic chapter/article
  • Stol, Norvald; Raffaelli, Carla; Savi, Michele; Cincotti, Gabriella. (2010) Optical Codes for Packet Detection in the OpMiGua Switch Architecture. Proceedings "Integrated Photonics Research, Silicon and Nano Photonics (IPR)/Photonics in Switching (PS)".
    Academic chapter/article
  • Kimsas, Andreas; Øverby, Harald; Stol, Norvald. (2009) Analysis of a bufferless OpMiGua Node. Proceedings of the 5th advanced international conference on telecommunications.
    Academic chapter/article
  • Bjørnstad, Steinar; Nord, Martin; Eriksen, Lars Erik; Tuft, Vegard Larsen; Hjelme, Dag Roar; Stol, Norvald; Kimsas, Andreas; Sudbo, A. (2007) Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed. 33rd European Conference and Exhibition on Optical Communication Conference.
    Academic chapter/article
  • Kimsas, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2007) Reservation Techniques in an OpMiGua node. 11th International IFIP TC6 Conference, ONDM 2007.
    Academic chapter/article
  • Kimsås, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2006) Protection Using Redundancy in a Hybrid Circuit/Packet Node Design. proceedings of the 32th European Conference on Optical Communications.
    Academic chapter/article
  • Kimsås, Andreas; Øverby, Harald; Bjørnstad, Steinar; Stol, Norvald. (2006) Performance in a failure situation of an OpMiGua packet switch with internal blocking. Proceedings of the 8th International Conference on Transparent Optical Networks, volume 3.
    Academic chapter/article
  • Stol, Norvald; Øverby, Harald; Bjørnstad, Steinar; Kimsås, Andreas; Mykkeltveit, Anders. (2006) Differentiated Survivability in the OpMiGua Hybrid Optical Network. Proceedings of the 10th Conference on Optical Network Design and Modelling.
    Academic chapter/article
  • Bjørnstad, Steinar; Sudbø, Aasmund; Andreassen, Ragnar; Zouganelli, Evi; Stol, Norvald; Helvik, Bjarne Emil. (2005) Node redundancy in optical burst and packet switched networks. Proceedings of the 7th International Conference on Transparent Optical networks (ICTON) in Barcelona, Vol. 1.
    Academic chapter/article
  • Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald; Hjelme, Dag Roar. (2005) Protecting guaranteed service traffic in an OpMiGua hybrid network. 31st European Conference on Optical Communications - ECOC 2005 - Proceedings.
    Academic chapter/article
  • Øverby, Harald; Stol, Norvald; Bjørnstad, Steinar. (2005) Dependability differentiation in Optical Packet Switched Networks. Proceedings of the 7th International Conference on Transparent Optical networks (ICTON) in Barcelona, Vol. 1.
    Academic chapter/article

Report

  • Nord, Martin; Bjørnstad, Steinar; Tuft, Vegard; Kimsås, Andreas; Hjelme, Dag Roar; Eriksen, Lars Erik; Olsen, Torodd; Øverby, Harald; Sudbø, Aasmund Sveinung; Stol, Norvald; Austad, Oddgeir; Kåråsen, Anne-Grete; Millstein, Geir. (2006) The OpMiGua project - final report. 2006. Telenor FoU report (Rxx).
    Report
  • Stol, Norvald; Strøm, Torbjørn; Fallmyr, Terje; Haddjerroudit, Sissel; Langmyhr, Dag; Lingjærde, Ole Chr.; Manne, Fredrik; Midtstraum, Roger; Yu, Weihai. (2002) Norsk Informatikkonferanse NIK'2002. 2002. ISBN 82-91116-45-8.
    Report
  • Stol, Norvald. (1997) Fluid flow based modelling and analysis of integrated services networks. 1997. ISBN 82-471-0046-0. Doktor ingeniøravhandling (1997:17).
    PhD thesis
  • Helvik, Bjarne Emil; Stol, Norvald. (1996) QoS differentiation in ATM networks : an initial study. 1996. ISBN 82-595-9700-4. SINTEF Rapport (STF40 A).
    Report
  • Stol, Norvald; Helvik, Bjarne Emil. (1996) ATM traffic experiments : a laboratory study of high-speed-data source characteristics on ATM switching performance. 1996. ISBN 82-595-9698-9. SINTEF Rapport (STF40 A).
    Report

Teaching

Courses

  • TTM4191 - Fundamentals of Communication Technology and Security for SmartGrid
  • TTM4105 - Access and Transport Networks
  • TTM4502 - Communication Technology, Specialization Project
  • TTM4100 - Communication - Services and Networks
  • TTM4905 - Communication Technology, Master's Thesis

Media

2015

  • Academic lecture
    Fernandez Fernandez, Alvaro; Stol, Norvald. (2015) Influence of Software and Hardware Failures with Imperfect Fault Coverage on PONs OPEX. 19th International Conference on Optical Network Design and Modeling (ONDM 2015) ; Pisa. 2015-05-11 - 2015-05-14.

2014

  • Academic lecture
    Yang, Shuna; Stol, Norvald. (2014) Design of delay-line buffers for asynchronous optical packet switched networks. Telecommunication networks and Applications conference (ATNAC) ; 2014-11-26 - 2014-11-28.

2013

  • Academic lecture
    Yang, Shuna; Stol, Norvald; Øverby, Harald. (2013) a novel approach in modeling multi-service optical packet switched networks with the preemptive drop policy. ieee conference on optical networking design and modeling ; brest. 2013-04-16 - 2913-04-19.
  • Poster
    Fernandez Fernandez, Alvaro; Savi, Michele; Stol, Norvald. (2013) Protecting real-time traffic service in a 3-LIHON hybrid node. 17th International Conference on Optical Network Design and Modeling (ONDM), 2013 ; 2013-04-16 - 2013-04-19.
  • Academic lecture
    Fernandez Fernandez, Alvaro; Stol, Norvald. (2013) Failure Impact, Availability and Cost Analysis of PONs Based on a Network Geometric Model. The 11th International Conference on Optical Internet (COIN2013) ; 2013-10-18 - 2013-10-20.
  • Academic lecture
    Yang, Shuna; Stol, Norvald. (2013) Architecture, Performance and Cost Analysis of an Optical Packet Switch with Input Concentrators. 2nd IEEE/CIC international conference on communications in china ; 2013-08-12 - 2013-08-14.

2012

  • Academic lecture
    Savi, Michele; Raffaelli, Carla; Stol, Norvald; Leli, Gaia. (2012) Performance Assessment of Congestion Resolution Scheduling in Asynchronous 3-Level Integrated Hybrid Optical Network (A-3LIHON. Networks 2012 ; 2012-10-15 - 2012-10-18.
  • Academic lecture
    Savi, Michele; Stol, Norvald; Øverby, Harald; Raffaelli, Carla. (2012) Contention Resolution Using Parametric Wavelength Converters: Performance and Cost Analysis. Globecom 2012 ; 2012-12-03 - 2012-12-07.
  • Academic lecture
    Savi, Michele; Stol, Norvald; Øverby, Harald; Raffaelli, Carla. (2012) Loss, Complexity and Cost Analysis of an Optical Switching Fabric Using Fixed Converters. ONDM 2012 ; 2012-04-17 - 2012-04-20.
  • Academic lecture
    Yang, Shuna; Stol, Norvald. (2012) Architecture and Performance Evaluation of the Edge Router for an Integrated Hybrid Optical Network. First IEEE International Conference on Communications in China: Optical Networks and Systems (ONS . IEEE; Beijing. 2012-08-15 - 2012-08-17.
  • Academic lecture
    Yang, Shuna; Stol, Norvald. (2012) Packet Loss Bounds for Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. Globecom 2012 - Communications QoS, Reliability and Modelling Symposium . IEEE; Anaheim, California. 2012-12-03 - 2012-12-07.
  • Academic lecture
    Yang, Shuna; Stol, Norvald; Øverby, Harald. (2012) Performance Modeling of Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters. 17th European Conference on Network and Optical Communications (NOC 2012) . IEEE; Catalonia. 2012-06-20 - 2012-06-22.

2011

  • Poster
    Kimsas, Andreas; Bjørnstad, Steinar; Stol, Norvald; Hjelme, Dag Roar. (2011) AWGshare - a Highly Scalable and Strictly Non-Blocking Optical Switch. 15th International Conference on Optical Network Design and Modeling (ONDM 2011) . Universitetet i Bologna; Bologna. 2011-02-07 - 2011-02-10.
  • Academic lecture
    Stol, Norvald; Raffaelli, Carla; Savi, Michele. (2011) 3-Level Integrated Hybrid Optical Network (3LIHON) to Meet Future QoS Requirements. IEEE GLOBECOM 2011 - Global Communications Conference, Exhibitions & Industry forum . IEEE; Huston, Texas. 2011-12-05 - 2011-12-09.

2010

  • Poster
    Stol, Norvald; Raffaelli, Carla; Savi, Michele; Cincotti, Gabriella. (2010) Optical Codes for Packet Detection in the OpMiGua Switch Architecture. Photonics in Switching (PS) 2010 . The Optical Society (OSA); Monterey, California. 2010-07-25 - 2010-07-27.

2007

  • Academic lecture
    Bjørnstad, Steinar; Nord, Martin; Eriksen, Lars Erik; Tuft, Vegard; Hjelme, Dag Roar; Stol, Norvald; Kimsås, Andreas; Sudbø, Aasmund Sveinung. (2007) Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed. ,” European Conference on Optical Communication (ECOC 2007), Session 4.6, September 16 - 20, 2007, . Verein der Deutschen Ingenieuren; Berlin, Germany. 2007-09-18 - 2007-09-20.
  • Academic lecture
    Bjørnstad, Steinar; Nord, Martin; Eriksen, Lars Erik; Tuft, Vegard Larsen; Hjelme, Dag Roar; Stol, Norvald; Kimsas, Andreas; Sudbø, Aasmund. (2007) Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed. 33rd European Conference and Exhibition on Optical Communication Conference . DBB; Berlin. 2007-09-17 - 2007-09-19.
  • Academic lecture
    Kimsas, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2007) Reservation Techniques in an OpMiGua node. Optical Network Design and Modeling . ifip; Athens. 2007-05-29 - 2007-05-31.

2006

  • Academic lecture
    Kimsås, Andreas; Bjørnstad, Steinar; Øverby, Harald; Stol, Norvald. (2006) Protection Using Redundancy in a Hybrid Circuit/Packet Node Design. 32th European Conference on Optical Communications ; Cannes. 2006-09-24 - 2006-09-28.
  • Academic lecture
    Kimsås, Andreas; Øverby, Harald; Bjørnstad, Steinar; Stol, Norvald. (2006) Performance in a failure situation of an OpMiGua packet switch with internal blocking. 8th International Conference on Transparent Optical Networks ; 2006-06-18 - 2006-06-22.
  • Academic lecture
    Stol, Norvald; Øverby, Harald; Bjørnstad, Steinar; Kimsås, Andreas; Mykkeltveit, Anders. (2006) Differentiated Survivability in the OpMiGua Hybrid Optical Network. 10th Conference on Optical Network Design and Modelling ; 2006-05-22 - 2006-05-24.
  • Academic lecture
    Zouganeli, Evi, Paraskevi; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Stol, Norvald; Sudbø, Aasmund Sveinung; Kjønsberg, Heidi; Helvik, Bjarne; Bjørnstad, Steinar; Haugen, Rolf B. (2006) Optical packets or electrical packets? An assessment of the viability of optical packet/burst switching. Northern Optics 2006 . Norsk Fysisk Selskap; Radisson SAS Hotel Norge, Bergen. 2006-06-14 - 2006-06-16.

2005

  • Academic lecture
    Bjørnstad, Steinar; Sudbø, Aasmund Sveinung; Andreassen, Ragnar; Zouganeli, Evi; Stol, Norvald; Helvik, Bjarne. (2005) Node redundancy in optical burst and packet switched networks. COST 291 workshop on “Issues and Challenges in Optical Networking . COST 291; Barcelona. 2005-06-03 - 2005-06-06.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Solem, Astrid; Helvik, Bjarne Emil; Sudbø, Aasmund; Haugen, Rolf B.. (2005) Optical packets, circuits, or packets and circuits: Viablility of optical packet/burst switching. The 10th OptoElectronics and Communications Conference (OECC 2005) ; Seoul. 2005-07-04 - 2005-07-08.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Solem, Astrid; Helvik, Bjarne; Sudbø, Aasmund Sveinung; Haugen, Rolf B. (2005) Optical packets, circuits, or packets and circuits: Viability of optical packet/burst switching. Opto-electronics and Communications Conference (OECC 2005) . Optical Society of Korea; Seoul. 2005-07-04 - 2005-07-08.
  • Academic lecture
    Øverby, Harald; Stol, Norvald; Bjørnstad, Steinar. (2005) Dependability differentiation in Optical Packet Switched Networks. 7th International Conference on Transparent Optical Networks . IEEE; Barcelona, Catalonia. 2005-07-03 - 2005-07-07.
  • Academic lecture
    Bjørnstad, Steinar; Sudbø, Aasmund; Andreassen, Ragnar; Zouganeli, Evi; Stol, Norvald; Helvik, Bjarne Emil. (2005) Node redundancy in optical burst and packet switched networks. 7th International Conference on Transparent Optical Networks (ICTON 2005) ; Barcelona. 2005-07-03 - 2005-07-07.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Stol, Norvald; Sudbø, Aasmund Sveinung; Kjønsberg, Heidi; Bjørnstad, Steinar; Helvik, Bjarne; Haugen, Rolf B. (2005) Results from IST STOLAS: Optical packet/ burst switched networks using tunable lasers – design, architectures and attainable performance. Norwegian Network Research Seminar (NNRS2005) . Uninett; Fornebu. 2005-10-27 - 2005-10-28.
  • Academic lecture
    Zouganeli, Evi; Solem, Astrid; Kjønsberg, Heidi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Sudbø, Aasmund Sveinung; Helvik, Bjarne; Haugen, Rolf B. (2005) Techno-Economic Evaluation of Optical Packet/ Burst Switching. European Conference on Optical Communication (ECOC 2005) . IEE; Glasgow. 2005-09-25 - 2005-09-29.
  • Academic lecture
    Zouganeli, Evi; Solheim, Astrid; Kjønsberg, Heidi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Sudbø, Aasmund; Helvik, Bjarne Emil. (2005) Techno-Economic Evaluation of Optical Packet/Burst Switching. 31st European Conference on Optical Communication [ECOC 2005] ; Glasgow. 2005-09-25 - 2005-09-29.

2004

  • Academic lecture
    Andreassen, Ragnar; Stol, Norvald; Zouganeli, Evi; Haugen, Rolf B; Helvik, Bjarne; Emstad, Peder; Sudbø, Aasmund Sveinung; Solem, Astrid; Feng, Boning. (2004) Application Dependent Performance of a Mesh Optical Burst Switched Network and Effect of Burst Size. European Conference on Optical Communication (ECOC 2003) and International Conference on Integrated Optics and Optical Fiber Communication (IOOC 2003) . AEI, IIC, Telecom Italia; Rimini. 2004-09-21 - 2004-09-25.
  • Academic lecture
    Bjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2004) Asynchronous feedback buffer with reduced self induced contention for optical packet switches. Optoelectronics and communication conference/International conference on optical Internet ; Yokohama. 2004-07-12 - 2004-07-16.
  • Academic lecture
    Bjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald; Nord, Martin. (2004) A packet switched hybrid optical network with service guarantees. Norsk elektro-optikk møte ; Tønsberg. 2004-05-02 - 2004-05-04.
  • Academic lecture
    Feng, Boning; Stol, Norvald; Zouganeli, Evi; Andreassen, Ragnar; Solem, Astrid; Haugen, Rolf B; Sudbø, Aasmund Sveinung; Helvik, Bjarne. (2004) Direct Comparison between Optical Circuit and Optical Packet/Burst Switching Using Simulations. Opto-electronics and Communications Conference and International Conference on Optical Internet (OECC/COIN 2004) ; Yokohama. 2004-07-12 - 2004-07-16.
  • Academic lecture
    Moseng, Tor K.; Øverby, Harald; Stol, Norvald. (2004) Merit Based Scheduling in Asynchronous Bufferless Optical Packet Switched Networks. Norsk Informatikkonferanse . Høyskolen i Stavanger; Stavanger. 2004-11-29 - 2004-12-01.
  • Academic lecture
    Undheim, Astrid; Øverby, Harald; Stol, Norvald. (2004) Absolute QoS in Synchronous Optical Packet Switched Networks. Norsk Informatikk Konferanse . Høgskolen i Stavanger; Stavanger. 2004-11-29 - 2004-12-01.
  • Academic lecture
    Zouganeli, Evi; Stol, Norvald; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Haugen, Rolf B; Sudbø, Aasmund Sveinung; Helvik, Bjarne. (2004) Optical packet/burst switched networks using tunable lasers: Architectures, Migration and Viability. Norwegian Electrooptics Meeting . Optikk- og akustikkgruppa i Norsk Fysisk Selskap; Tønsberg. 2004-05-02 - 2004-05-04.
  • Academic lecture
    Øverby, Harald; Stol, Norvald. (2004) Evaluating and Comparing Two Different Service Differentiation Methods for OPS: The Wavelength Allocation algorithm and The Preemptive Drop Policy. 3rd International Conference on Networking (ICN) . IEEE; Guadeloupe. 2004-02-29 - 2004-03-04.
  • Academic lecture
    Øverby, Harald; Stol, Norvald. (2004) Exploiting network layer packet redundancy to reduce the end-to-end data packet loss rate in optical packet/burst switched networks. Nordic Teletraffic Seminar ; Oslo. 2004-08-25 - 2004-08-27.
  • Academic lecture
    Øverby, Harald; Stol, Norvald. (2004) Providing QoS in OPS/OBS networks with the Preemptive Drop Policy. 3rd International Conference on Networking (ICN) . IEEE; Guadeloupe. 2004-02-29 - 2004-03-04.
  • Academic lecture
    Feng, Boning; Stol, Norvald; Zouganeli, Evi; Andreassen, Ragnar Ø.; Solem, Astrid; Haugen, Rolf B.; Sudbø, Aasmund; Helvik, Bjarne Emil. (2004) Direct comparison between optical circuit and optical packet / burst switching using simulations. OptoElectronics and Communications Conference/International Conference on Optical Internet (OECC/COIN2004) ; Yokohama. 2004-07-12 - 2004-07-16.

2003

  • Academic lecture
    Bjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2003) A highly efficient optical packet switching node design supporting guaranteed service. European Conference on Optical Communication ; Rimini. 2003-09-21 - 2003-09-25.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar; Haugen, Rolf B; Solem, Astrid; Feng, Boning; Sudbø, Aasmund Sveinung; Stol, Norvald; Helvik, Bjarne; Emstad, Peder. (2003) Performance evaluation of a mesh optical burst switched network with tunable lasers and tunable wavelength converters. 7th Conference on Telecommunication (ConTEL) . University of Croatia, IEEE Croatia; Zagreb. 2003-06-11 - 2004-06-13.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar; Sudbø, Aasmund Sveinung; Peder, Emstad; Helvik, Bjarne; Stol, Norvald; Haugen, Rolf B. (2003) Stacked Label Optical Burst Switched Networks using Tunable Lasers: Prospects, Viability and Architectures. Conference on Optical Network Design and Modelling (ONDM 2003 . International Federation of Information Processing; Budapest. 2003-02-03 - 2003-02-03.
  • Academic lecture
    Øverby, Harald; Stol, Norvald. (2003) A Teletraffic Model for Service Differentiation in OPS Networks. 8th Optoelectronic and Communications Conference (OECC) . [Mangler data]; Shanghai, China. 2003-10-16.
  • Academic lecture
    Øverby, Harald; Stol, Norvald. (2003) A Teletraffic Model of Service Differentiation with Electronic Buffering in Optical Packet Switched Networks. Conference on the Optical Internet & Astralian Conference on Optical Fibre Technology (COIN/ACOFT) . [Mangler data]; Melbourne, Australia. 2003-07-16.
  • Academic lecture
    Andreassen, Ragnar Ø.; Stol, Norvald; Zouganeli, Evi; Haugen, Rolf B.; Helvik, Bjarne Emil; Emstad, Peder Johannes; Sudbø, Aasmund; Solem, Astrid; Feng, Boning. (2003) Application Dependent Performance of a Mesh Optical Burst Switched Network and Effect of Burst Size. 29th European Conference on Optical Communication (ECOC 2003) . [Mangler data]; Rimini, Italy. 2003-09-25.
  • Academic lecture
    Andreassen, Ragnar Ø.; Stol, Norvald; Zouganeli, Evi; Haugen, Rolf B.; Helvik, Bjarne Emil; Emstad, Peder Johannes; Sudbø, Aasmund; Solem, Astrid; Feng, Boning. (2003) Application Dependent Performance of a Mesh Optical Burst Switched Network and Effect of Burst Size. ECOC 2003 ; Rimini. 2003-09-21 - 2003-09-25.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar Ø.; Haugen, Rolf B.; Solem, Astrid; Feng, Boning; Sudbø, Aasmund; Stol, Norvald; Helvik, Bjarne Emil; Emstad, Peder Johannes. (2003) Performance evaluation of a meshed optical burst switched network with tunable lasers and tunable wavelength converters. 7th International Conference on Telecommunications ; Zabreb. 2003-06-11 - 2003-06-13.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar Ø.; Sudbø, Aasmund; Emstad, Peder Johannes; Helvik, Bjarne Emil; Stol, Norvald; Haugen, Rolf B.. (2003) Stacked Label Optical Burst Switched Networks using Tunable Lasers: Prospects, Viability and Architectures. 7th IFIP Working Conference on Optical Network Design & Modelling (ONDM 2003) . [Mangler data]; Budapest, Hungary. 2003-02-05.
  • Academic lecture
    Zouganeli, Evi; Andreassen, Ragnar Ø.; Sudbø, Aasmund; Emstad, Peder Johannes; Helvik, Bjarne Emil; Stol, Norvald; Haugen, Rolf B.. (2003) Stacked Label Optical Burst Switched Networks using Tunable Lasers: Prospects, Viability and Architectures. The 7th IFIP Working Conference on Optical Network Design & Modelling (ONDM 2003) ; Budapest. 2003-02-03 - 2003-02-05.
  • Academic lecture
    Zouganeli, Evi; Stol, Norvald; Andreassen, Ragnar Ø.; Helvik, Bjarne Emil; Haugen, Rolf B.; Emstad, Peder Johannes; Solem, Astrid; Feng, Boning; Sudbø, Aasmund. (2003) Performance evaluation of a mesh optical burst switched network with tunable lasers and tunable wavelength converters. 7th International Conference on Telecommunications . [Mangler data]; Zagreb, Croatia. 2003-06-13.

2002

  • Academic lecture
    Bjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2002) A scalable optical packet switch for variable length packets employing share electronic buffering. ECOC2002 European Conference on Optical Communications . [Mangler data]; Copenhagen, Denmark. 2002-09-11.
  • Academic lecture
    Bjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2002) An optical packet switch design with shared electronic buffering and low bit rate add/drop inputs. ICTCON'2002 . [Mangler data]; Warsawa, Poland. 2002-04-22.
  • Academic lecture
    Bjørnstad, Steinar; Stol, Norvald; Hjelme, Dag Roar. (2002) Quality of service in optical packet switched DWDM transport networks. Asia Pacific Optical and Wireless Communications conference and exibition 2002 (APOC 2002, SPIE Conference) . [Mangler data]; Shanghai, China. 2002-10-16.
  • Academic lecture
    Stol, Norvald. (2002) A Study on Traffic Shaping, Policing and Conformance Deterioration for QoS Contracted Networks. IEEE Global Telecommunications Conference (GLOBECOM) . [Mangler data]; Taipei, Taiwan. 2002-11-21.

2001

  • Academic lecture
    Stol, Norvald. (2001) A Priority-oriented Call Admission Control Paradigm with QoS Re-negotiation for Multimedia Services in UMTS. IEEE Vehicular Technology Conference (VTC'01spring) . [Mangler data]; Rhodes, Greece. 2001-05-09.
  • Academic lecture
    Stol, Norvald. (2001) Providing Conformance of the Negotiated QoS Using Traffic Conditioning for Heterogeneous Services in WCDMA Radio Access Networks. Norsk Informatikk Konferanse (NIK'01) . [Mangler data]; Tromsø, Norway. 2001-11-28.
  • Academic lecture
    Stol, Norvald; Thanh, Tung Pham; Andresen, Steinar Hidle. (2001) A Priority-oriented QoS Management Framework for Multimedia Services in UMTS. The 4th International Symposium on Wireless Personal Multimedia Communications (WPMC'01), . [Mangler data]; Aalborg, Denmark. 2001-09-12.

1998

  • Academic lecture
    Heegaard, Poul E.; Helvik, Bjarne Emil; Stol, Norvald. (1998) Genetic Algorithms for Dimensioning of Full Service Access Networks. Fourteenth Nordic Teletraffic Seminar (NTS 14) . [Mangler data]; Lyngby, Demark.

1996

  • Academic lecture
    Helvik, Bjarne Emil; Stol, Norvald. (1996) QoS differentiation in ATM networks : a case study. [Mangler data] . [Mangler data]; Trondheim.
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