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Analysis of connection availability in optical networks with multi-failure assumption
KTH, School of Information and Communication Technology (ICT), Optics and Photonics (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Optics and Photonics (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Optics and Photonics (Closed 20120101).ORCID iD: 0000-0001-6704-6554
2006 (English)In: Proc SPIE Int Soc Opt Eng, 2006Conference paper (Refereed)
Abstract [en]

Optical networks carry an increasing amount of traffic due to the rapid growth of IP and multimedia services. Therefore the impact of network failures on this traffic and thus user services is growing fast. In addition some network services are heavily dependent upon the availability of communication resources. Consequently, network operators have to deal with the steadily growing availability requirement. Thus, survivability mechanisms need to be provided in the networks to meet the connection availability requirement. There are several protection schemes that can be applied to improve connection availability in the network. Shared Path Protection (SPP) scheme is selected in this paper due to its efficiency in resource utilization .In many works the SPP scheme has been studied to solve a single failure problem. However, in large networks the occurrence of multiple concurrent failures cannot be neglected [1]-[3]. In this respect we studied the SPP scheme for mesh optical transport networks with multiple failure scenario and developed connection availability model with multiple failure assumption instead of traditional single failure assumption. In this paper we present the analytical model for connection availability in SPP mesh network with multiple failure assumption. Our model is more general than the traditional model adopted for single failure assumption and also is more general than the work for two protection paths. We also developed a simulator to evaluate our analytical model. The results show that the connection unavailability obtained by simulations is very close to the theoretical value, which approve that our algorithm is accurate.

Place, publisher, year, edition, pages
, Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X ; 6193
Keyword [en]
Differentiated reliability, Multi-failure, Network, Shared path protection, Communication systems, Failure analysis, Mathematical models, Multimedia systems, Network protocols, Telecommunication traffic, Fiber optic networks
National Category
URN: urn:nbn:se:kth:diva-156320DOI: 10.1117/12.662331ISI: 000239004500039ScopusID: 2-s2.0-33746702000ISBN: 0819462497ISBN: 9780819462497OAI: diva2:766874
Reliability of Optical Fiber Components, Devices, Systems, and Networks III, 3-4 April 2006, Strasbourg, France

QC 20141128

Available from: 2014-11-28 Created: 2014-11-26 Last updated: 2015-10-06Bibliographically approved

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Wosinska, Lena
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