1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Μεταδιδακτορικοί ερευνητές

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Exploiting spectrum sharing for soft failure recovery
Συγγραφέας:	[EL] Σαρτζετάκης, Ιπποκράτης-Λεωνίδας[EN] Sartzetakis, Ippokratis-Leonidas [EN] Sambo Nicola [EL] Χριστοδουλόπουλος, Κωνσταντίνος[EN] Christodoulopoulos, Konstantinos [EN] Castoldi, Piero [EL] Βαρβαρίγος, Εμμανουήλ[EN] Varvarigos, Emmanouel
Ημερομηνία:	17/08/2018
Περίληψη:	Elastic optical networks (EONs) offer several optimization dimensions that can be harvested to increase network efficiency and survivability. More specifically, the adaptation of the modulation format to a more robust one can recover the quality of transmission (QoT) of a lightpath affected by a soft failure (i.e., a physical layer degradation resulting in QoT deterioration). In this scenario, increasing the robustness of a transmission may require a spectrum increase. Thus, the spectrum also might have to be reconfigured. In this paper, we propose spectrum sharing between lightpaths of classes requiring different rate guarantees. In the case of a soft failure, a high-priority, rate-guaranteed lightpath can expand its spectrum to recover its QoT at the expense of spectrum allocated to a lower-priority, guaranteed minimum rate lightpath. We propose an integer linear programming (ILP) routing and spectrum assignment (RSA) algorithm for the planning phase and an online RSA for the operation phase of the network that optimize spectrum sharing among lightpaths of different classes. Using these proposed techniques can effectively reduce the network costs to guarantee the rate of high-priority connections.
Γλώσσα:	Αγγλικά
Σελίδες:	9
DOI:	10.1364/JOCN.10.000653
ISSN:	1943-0620
Θεματική κατηγορία:	[EL] Δίκτυα ηλεκτρονικών υπολογιστών και Επικοινωνίες[EN] Computer Networks and Communications
Λέξεις-κλειδιά:	Network Optimization; Network survivability; Rate guarantees; Reconfiguration; Routing and spectrum allocation; Soft failures; Spectrum sharing
Κάτοχος πνευματικών δικαιωμάτων:	Journal © 2018 Optical Society of America
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://ieeexplore.ieee.org/document/8438297 https://www.osapublishing.org/jocn/abstract.cfm?uri=jocn-10-8-653
Ηλεκτρονική διεύθυνση περιοδικού:	https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563700 https://www.osapublishing.org/jocn/home.cfm
Τίτλος πηγής δημοσίευσης:	IEEE/OSA Journal of Optical Communications and Networking
Τεύχος:	8
Τόμος:	10
Σελίδες τεκμηρίου (στην πηγή):	653 - 661
Σημειώσεις:	I. Sartzetakis was supported by IKY Greek State PhD Scholarship, which was funded from the initiative “Support of the research human resources through the implementation of doctoral research,” from the resources of “Human Resources Development, Education and Lifelong Learning” 2014-2020, cofunded by the European Social Fund and the Greek State. K. Christodoulopoulos was supported by a IKY post-doctoral scholarship cofunded by the European Social Fund and the Greek State. This work was also partially supported by the ORCHESTRA project, funded by EC (grant agreement 645360).
Εμφανίζεται στις συλλογές:	Μεταδιδακτορικοί ερευνητές