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Article: Efficient path protection in bi-directional WDM systems

TitleEfficient path protection in bi-directional WDM systems
Authors
KeywordsBi-directional WDM
Path protection
Two-step routing
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/comnet
Citation
Computer Networks, 2008, v. 52 n. 6, p. 1166-1178 How to Cite?
AbstractBi-directional WDM transmission is a technique that allows data to be transmitted simultaneously in both directions of a fiber, with different sets of wavelength channels for each direction. Compared with unidirectional WDM systems, it not only saves the cost of deploying extra fibers, but also allows more flexible bandwidth provisioning. To exploit this flexibility, we investigate path protection schemes for bi-directional WDM transmission systems in this paper. With path protection, a call is accepted if and only if an active data path together with a disjointed backup path can be found in the network. With bi-directional WDM, backup resource sharing in both directions of a fiber is possible. Based on a set of judiciously designed link cost functions, two original path protection schemes are proposed in this paper, BiPro and BiProLP. BiProLP aims at further economizing the hardware cost incurred by BiPro. In contrast to the traditional unidirectional schemes, we show that both BiPro and BiProLP can yield noticeably lower call blocking probability, higher system capacity and shorter active/backup path length. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/73767
ISSN
2015 Impact Factor: 1.446
2015 SCImago Journal Rankings: 0.755
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Jen_HK
dc.contributor.authorYeung, KLen_HK
dc.contributor.authorChan, CKen_HK
dc.date.accessioned2010-09-06T06:54:34Z-
dc.date.available2010-09-06T06:54:34Z-
dc.date.issued2008en_HK
dc.identifier.citationComputer Networks, 2008, v. 52 n. 6, p. 1166-1178en_HK
dc.identifier.issn1389-1286en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73767-
dc.description.abstractBi-directional WDM transmission is a technique that allows data to be transmitted simultaneously in both directions of a fiber, with different sets of wavelength channels for each direction. Compared with unidirectional WDM systems, it not only saves the cost of deploying extra fibers, but also allows more flexible bandwidth provisioning. To exploit this flexibility, we investigate path protection schemes for bi-directional WDM transmission systems in this paper. With path protection, a call is accepted if and only if an active data path together with a disjointed backup path can be found in the network. With bi-directional WDM, backup resource sharing in both directions of a fiber is possible. Based on a set of judiciously designed link cost functions, two original path protection schemes are proposed in this paper, BiPro and BiProLP. BiProLP aims at further economizing the hardware cost incurred by BiPro. In contrast to the traditional unidirectional schemes, we show that both BiPro and BiProLP can yield noticeably lower call blocking probability, higher system capacity and shorter active/backup path length. © 2008 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/comneten_HK
dc.relation.ispartofComputer Networksen_HK
dc.rightsComputer Networks. Copyright © Elsevier BV.en_HK
dc.subjectBi-directional WDMen_HK
dc.subjectPath protectionen_HK
dc.subjectTwo-step routingen_HK
dc.titleEfficient path protection in bi-directional WDM systemsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1389-1286&volume=&spage=&epage=&date=2008&atitle=Efficient+Path+Protection+in+Bi-directional+WDM+Systemsen_HK
dc.identifier.emailYeung, KL:kyeung@eee.hku.hken_HK
dc.identifier.authorityYeung, KL=rp00204en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.comnet.2008.01.001en_HK
dc.identifier.scopuseid_2-s2.0-40849097435en_HK
dc.identifier.hkuros140153en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-40849097435&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume52en_HK
dc.identifier.issue6en_HK
dc.identifier.spage1166en_HK
dc.identifier.epage1178en_HK
dc.identifier.isiWOS:000255471600004-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLi, J=8699153700en_HK
dc.identifier.scopusauthoridYeung, KL=7202424908en_HK
dc.identifier.scopusauthoridChan, CK=7404813687en_HK

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