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

Robust Regenerator Allocation in Nonlinear Flexible-Grid Optical Networks With Time-Varying Data Rates

Abstract

Predeployment of regenerators in a selected subset of network nodes allows service providers to achieve rapid provisioning of traffic demands, high utilization, and reduced network operational costs, while still guaranteeing lightpath quality of transmission. Enabled by bandwidth-variable transceivers in flexible-grid optical networks, optical channel bandwidths are no longer fixed but constantly changing according to real-time communication requirements. Consequently, the data-rate-variable traffic together with other new network features introduced by flexible-grid networks will render the regenerator allocation very difficult due to the complicated network states. In this paper, we investigate how to allocate regenerators robustly in flexible-grid optical networks to combat physical-layer impairments when the data rates of traffic demands are random variables. The Gaussian noise model and a modified statistical network assessment process framework are used to characterize the probabilistic distributions of physical-layer impairments for each demand, based on which a heuristic algorithm is proposed to select a set of regenerator sites with minimum blocking probabilities. Our method achieves the same blocking probabilities with on average 10% less regenerator sites compared with the greedy constrained-routing regenerator allocation method, and obtains blocking probabilities two orders of magnitude lower than that of the routing and reach method with the same number of regenerator sites.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Joint Banding-Node Placement and Resource Allocation for Multigranular Elastic Optical Networks

Jingxin Wu, Maotong Xu, Suresh Subramaniam, and Hiroshi Hasegawa
J. Opt. Commun. Netw. 10(8) C27-C38 (2018)

Routing and Spectrum Assignment With Delayed Allocation in Elastic Optical Networks

Pegah Afsharlar, Arash Deylamsalehi, Jeremy M. Plante, Juzi Zhao, and Vinod M. Vokkarane
J. Opt. Commun. Netw. 9(3) B101-B111 (2017)

Efficient Dynamic Routing and Spectrum Assignment for Multifiber Elastic Optical Networks

Jingxin Wu, Suresh Subramaniam, and Hiroshi Hasegawa
J. Opt. Commun. Netw. 11(5) 190-201 (2019)

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 (7)

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 (4)

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 (15)

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