A pragmatic approach for designing transparent WDM optical networks with multi-objectives

05/18/2021
by   Dao Thanh Hai, et al.
0

In facing with the explosive Internet traffic growth, optical transport networks based on WDM technologies forming the core part of Internet infrastructure carrying multi-Tb/s has to be re-considered from both designing, planning, operation and management perspectives to attain greater efficiency. Thanks to the convergence of significant advances in optical transmission technologies, and photonic switching, transparent (all-optical) architecture has come into practice, paving the way for eliminating the over-utilization of costly optical-electrical-optical (O-E-O) interfaces and hence, yielding remarkable savings of cost and energy consumption compared to opaque architecture. Traditional designs for transparent optical networks based on single-objective optimization model aiming at optimizing solely a single performance metric appears to be insufficient to capture the nuances of practical designs while conventional multi-objective approach tends to reach (non-) optimal solutions. Different from existing works, we present a new framework for multi-objective WDM network designs capturing several goals on one hand and on the other hand, achieving optimal solutions. Moreover, our proposal exploits the characteristics of each constituent objectives to lay the foundation for setting up weight coefficient so that the order of optimization is guaranteed. Equally important, our proposal is pragmatic in the sense that the complexity of the optimization model remains the same as the single-objective model while the quality of solution has been greatly improved. We have extensively tested realistic optical core networks topologies, that is, COST239 and NSFNET, with various network traffic conditions and it turns out that our design brings about a saving of wavelength link usage up to roughly 28% in the most favorable cases while 14% is expected for the least favorable cases.

READ FULL TEXT

Authors

page 1

page 2

page 3

page 4

05/14/2021

The Achilles Heel of Some Optical Network Designs and Performance Comparisons

This non-conventional paper represents the first attempt to uncover a po...
04/26/2022

On Routing, Wavelength, Network Coding Assignment and Protection Configuration Problem in Optical-processing-enabled Networks

In optical-processing-enabled network, transitional lightpaths crossing ...
04/25/2022

Quo Vadis, Optical Network Architecture? Towards an Optical-processing-enabled Paradigm

Among various aspects in optical network architectures, handling transit...
01/18/2020

FlexiBO: Cost-Aware Multi-Objective Optimization of Deep Neural Networks

One of the key challenges in designing machine learning systems is to de...
05/03/2021

Three Commandments for Applying (Photonic) Network Coding To Optical Core Networks

The digital transformation has been underway, creating digital shadows o...
02/02/2020

METTEOR: Robust Multi-Traffic Topology Engineering for Commercial Data Center Networks

Numerous optical circuit switched data center networks have been propose...
06/08/2021

Network Topologies for Composable Data Centres

Suitable composable data center networks (DCNs) are essential to support...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.