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

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Optimization techniques for incremental planning of multilayer elastic optical networks
Συγγραφέας:	[EL] Παπανικολάου, Παναγιώτης[EN] Papanikolaou, P. [EL] Χριστοδουλόπουλος, Κωνσταντίνος[EN] Christodoulopoulos, Konstantinos [EL] Βαρβαρίγος, Εμμανουήλ[EN] Varvarigos, Emmanouel
Ημερομηνία:	22/03/2018
Περίληψη:	As optical networks become increasingly flexible and software driven, network operators need to reconsider their present mode of network planning and operation, which traditionally relies on long planning periods, performed independently for the IP edges (logical topology) and the optical transport layer (physical topology). Network planning assuming fully loaded end-of-life conditions fails to follow traffic evolution and results in capacity overprovisioning, underutilized equipment, and stranded investments. We argue that it would be beneficial to have shorter upgrade cycles and a multiperiod network planning approach that accounts jointly for the upgrade of the optical but also the IP edges of the network. We formulate the incremental multilayer planning problem of an IP over elastic optical network and propose an integer linear programming (ILP) algorithm to solve it. The ILP model leverages the reconfigurability of both network layers to delay equipment deployment and benefit from cost erosion. Our objective is, through repurposing of existing network resources, to deploy in a period the minimum additional network equipment (capital expenditures) to cope with traffic changes from the previous period but also to minimize changes in transitioning between the two periods (operational expenditures). The proposed planning approaches are validated through simulations based on realistic network scenarios, where we also study the effect of the upgrade period duration.
Γλώσσα:	Αγγλικά
Σελίδες:	12
DOI:	10.1364/JOCN.10.000183 1943-0620
Θεματική κατηγορία:	[EL] Δίκτυα ηλεκτρονικών υπολογιστών και Επικοινωνίες[EN] Computer Networks and Communications
Λέξεις-κλειδιά:	Elastic Optical Networks; Incremental capacity planning; Joint multilayer planning
Κάτοχος πνευματικών δικαιωμάτων:	© 2018, IEEE © 2018 Optical Society of America
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://ieeexplore.ieee.org/document/8320624 https://www.osapublishing.org/jocn/abstract.cfm?uri=jocn-10-3-183
Ηλεκτρονική διεύθυνση περιοδικού:	https://www.osapublishing.org/jocn/home.cfm https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563700
Τίτλος πηγής δημοσίευσης:	IEEE/OSA Journal of Optical Communications and Networking
Τεύχος:	3
Τόμος:	10
Σελίδες τεκμηρίου (στην πηγή):	183-194
Σημειώσεις:	P. Papanikolaou was supported by an IKY Ph.D. scholarship and K. Christodoulopoulos by an IKY postdoc scholarship, which were funded from resources of “Human Resources Development, Education and Lifelong Learning” 2014–2020, cofunded by the European Social Fund and the Greek State
Εμφανίζεται στις συλλογές:	Μεταδιδακτορικοί ερευνητές