dc.contributor.author | Gomes, Teresa | en |
dc.contributor.author | Raposo, Luís | en |
dc.contributor.author | Ellinas, Georgios | en |
dc.creator | Gomes, Teresa | en |
dc.creator | Raposo, Luís | en |
dc.creator | Ellinas, Georgios | en |
dc.date.accessioned | 2021-01-26T09:45:41Z | |
dc.date.available | 2021-01-26T09:45:41Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 1097-0037 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/63347 | |
dc.description.abstract | This work addresses the problem of dedicated protection of multicast sessions in mixed-graph optical networks, where only a fraction of the nodes have optical splitting capabilities. A novel multicast routing algorithm for sparse splitting optical networks (the Modified Steiner Tree Heuristic [MSTH]) is initially presented and is subsequently utilized (together with two existing heuristics [MUS and MSH]) by an effective scheme for the calculation of a pair of disjoint trees. The key idea of this New Arc-Disjoint Trees (NADT) protection technique is to gradually construct the primary tree, verifying that after the addition of each one of the destinations of the multicast session, a secondary (arc-disjoint) tree can still be obtained. Performance results demonstrate that the proposed NADT protection technique clearly outperforms the conventional Arc-Disjoint Trees (ADT) approach in terms of blocking ratio, while incurring only a negligible increase of the average cost of the derived pair of ADT. Furthermore, it is shown that the newly proposed algorithm, MSTH-NADT, is the one having the best performance in terms of cost and blocking, with MSH-NADT having similar, albeit slightly worse, performance. However, as MSH-NADT requires much less CPU time compared to MSTH-NADT, MSH-NADT can be considered the best compromise technique. © 2017 Wiley Periodicals, Inc. NETWORKS, Vol. 70(4), 360–372 2017 | en |
dc.language.iso | en | en |
dc.source | Networks | en |
dc.source.uri | https://onlinelibrary.wiley.com/doi/abs/10.1002/net.21781 | |
dc.title | Dedicated protection of multicast sessions in mixed-graph sparse-splitting optical networks | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1002/net.21781 | |
dc.description.volume | 70 | |
dc.description.issue | 4 | |
dc.description.startingpage | 360 | |
dc.description.endingpage | 372 | |
dc.author.faculty | Πολυτεχνική Σχολή / Faculty of Engineering | |
dc.author.department | Τμήμα Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών / Department of Electrical and Computer Engineering | |
dc.type.uhtype | Article | en |
dc.contributor.orcid | Ellinas, Georgios [0000-0002-3319-7677] | |
dc.gnosis.orcid | 0000-0002-3319-7677 | |