Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Dynamic Cooperative Spectrum Sharing and Defragmentation for Elastic Optical Networks

Not Accessible

Your library or personal account may give you access

Abstract

Flexible optical networks appear as the most prevalent candidates for next-generation core transport networks. The transition from a fixed to a flexible frequency grid calls for novel spectrum allocation techniques. This work focuses on the notion of dynamic cooperative spectrum sharing and addresses the issue of dynamic cooperative spectrum allocation for flexible optical networks. In order to cope with the dynamicity of the traffic demands, spectrum expansion/contraction (SEC) policies attempt to accommodate incoming requests by means of expanding/contracting the allocations of connections. When spectrum expansion is limited by neighboring connections, appropriate spectrum defragmentation (SD) policies undertake the task of reallocating connections in order to free up the spectrum. In this work, a novel cooperative SEC policy is examined, which takes into consideration the spectrum allocation of neighboring connections. Additionally, a class of cooperative SD policies is proposed, based on the capabilities of current technology. Simulation results from two reference core networks quantify the benefits that can be reaped in terms of blocking rate. Trade-offs with respect to the achieved reduction in blocking rate and the number of reallocated connections during the SD procedure are examined.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Deep reinforcement learning for proactive spectrum defragmentation in elastic optical networks

Ehsan Etezadi, Carlos Natalino, Renzo Diaz, Anders Lindgren, Stefan Melin, Lena Wosinska, Paolo Monti, and Marija Furdek
J. Opt. Commun. Netw. 15(10) E86-E96 (2023)

Route Partitioning Scheme for Elastic Optical Networks With Hitless Defragmentation

Seydou Ba, Bijoy Chand Chatterjee, Satoru Okamoto, Naoaki Yamanaka, Andrea Fumagalli, and Eiji Oki
J. Opt. Commun. Netw. 8(6) 356-370 (2016)

Efficient Spectrum Defragmentation With Holding-Time Awareness in Elastic Optical Networks

Sandeep Kumar Singh and Admela Jukan
J. Opt. Commun. Netw. 9(3) B78-B89 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved