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

Dynamic routing, spectrum, and modulation-format allocation in mixed-grid optical networks

Not Accessible

Your library or personal account may give you access

Abstract

Traffic in optical backbone networks is evolving rapidly in terms of type, volume, and dynamicity following the rapid growth of cloud-based services, ongoing adoption of 5G communications, and explosion of the Internet of Things (IoT). The elastic optical network (EON), by adopting a flexible grid, can provide the required capacity and flexibility to handle these rapid changes. However, operators rarely perform greenfield deployments, so to limit upfront investment, a gradual migration from fixed-grid to flexible-grid switching equipment is preferable. For gradual migration, switching nodes can be upgraded (starting from bottleneck network links) while keeping the rest of the traditional fixed-grid network operational. We refer to the coexistence of fixed-grid and flex-grid optical equipment as a “mixed-grid” network. Traditional algorithms for dynamic resource assignment in EONs will not effectively be applicable in a mixed-grid network due to interoperability issues among fixed- and flex-grid nodes. In this study, we propose a new algorithm, called Mixed-grid-aware Dynamic Resource Allocation, to solve the route, spectrum, and modulation-format allocation problem in a mixed-grid network while considering interoperability constraints. Our numerical results (on representative network topologies) show that the proposed method achieves 50% less blocking (for 50% offered load) compared to the traditional approach.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Dynamic Routing and Spectrum Allocation in Elastic Optical Networks With Mixed Line Rates

Xiong Wang, Kaixuan Kuang, Sheng Wang, Shizhong Xu, Hong Liu, and Gordon Ning Liu
J. Opt. Commun. Netw. 6(12) 1115-1127 (2014)

Fragmentation-Aware Routing and Spectrum Allocation Scheme Based on Distribution of Traffic Bandwidth in Elastic Optical Networks

Xin Chen, Juhao Li, Paikun Zhu, Ruizhi Tang, Zhangyuan Chen, and Yongqi He
J. Opt. Commun. Netw. 7(11) 1064-1074 (2015)

All Programmable and Synthetic Optical Network: Architecture and Implementation

Bijan Rahimzadeh Rofoee, George Zervas, Yan Yan, Norberto Amaya, and Dimitra Simeonidou
J. Opt. Commun. Netw. 5(9) 1096-1110 (2013)

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 (11)

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 (8)

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

Select as filters


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