Slick Lightpath Reconfiguration Using Spare Resources

Fernando Solano Donado


This paper presents different methods to solve the network reconfiguration problem in wavelength-switching optical networks. The network reconfiguration problem consists of finding a sequence of operations that can be used to migrate traffic from one lightpath configuration to another. Operations correspond to establishing or tearing down a given lightpath. The methods presented exploit for the first time (to our knowledge) the structure of the underlying combinatorial problems in order to divide the reconfiguration process into independent stages, decreasing the amount of disrupted traffic. Our numerical results show that our approaches can reduce the number of disruptions up to 10% more than the traditional approach (computing the minimum feedback vertex set of the dependency graph), while releasing 40% of seized resources during the reconfiguration process. The methodology presented can be easily adapted to other circuit-switching technologies, such as flexpaths.
Author Fernando Solano Donado (FEIT / IT)
Fernando Solano Donado,,
- The Institute of Telecommunications
Journal seriesJournal of Optical Communications and Networking, ISSN 1943-0620, e-ISSN 1943-0639
Issue year2013
Publication size in sheets0.5
Keywords in EnglishDeadlock; Lightpath; Network reconfiguration; Traffic disruption; WDM
ASJC Classification1705 Computer Networks and Communications
ProjectMixed-integer programming models for joint optimization of link capacity assignment, flow scheduling, and routing in fair multicommodity flow networks. Project leader: Pióro Michał, , Phone: +48 22 234-7383, application date 07-06-2011, start date 07-12-2011, end date 06-12-2014, IT/2012/badawczy/30, Completed
WEiTI Projects financed by NSC [Projekty finansowane przez NCN]
The Develpment of Digital Communicatios. Project leader: Lubacz Józef, , Phone: 22 234 65 31, start date 04-05-2012, planned end date 31-03-2013, end date 31-12-2013, IT/2012/statut, Completed
WEiTI Działalność statutowa
Languageen angielski
06608641.pdf 603.9 KB
jocn-article-published.pdf 603.9 KB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 16-06-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 16-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; GS Citations = 1.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.665; WoS Impact Factor: 2013 = 1.547 (2) - 2013=1.765 (5)
Citation count*1 (2020-09-20)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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