Paper Info
Title
Design of green optical networks with signal quality guarantee
Abstract
Energy consumption of communication networks is growing very fast due to the rapidly increasing traffic demand. Consequently, design of green communication networks gained a lot of attention. In this paper we focus on optical Wavelength Division Multiplexing (WDM) networks, able to support this growing traffic demand. Several energy-aware routing and wavelength assignment (EA-RWA) techniques have been proposed for WDM networks in order to minimize their operational cost. These techniques aim at minimizing the number of active links by packing the traffic as much as possible, thus avoiding the use of lightly loaded links. As a result, EA-RWA techniques may lead to longer routes and to a high utilization on some specific links. This has a detrimental effect on the signal quality of the optical connections, i.e., lightpaths. In this study we quantify the impact of power consumption minimization on the optical signal quality. and address this problem by proposing a combined impairment and energy-aware RWA (IEA-RWA) approach. Towards this goal we developed a complete mathematical model that incorporates both linear and non-linear physical impairments together with an energy efficiency objective. The IEA-RWA problem is formulized as a Mixed Integer Linear Programming (MILP) model where both energy efficiency and signal quality considerations are jointly optimized. By comparing the proposed IEA-RWA approach with existing RWA (IA-RWA and EA-RWA) schemes, we demonstrate that our solution allows for a reduction of energy consumption close to the one obtained by EA-RWA approaches, while still guaranteeing a sufficient level of the optical signal quality.
Year
DOI
Venue
2012
10.1109/ICC.2012.6364041
ICC
Keywords
Field
DocType
ea-rwa technique,mixed integer linear programming model,impairment-energy-aware rwa approach,milp model,energy-efficient networks,detrimental effect,wavelength division multiplexing,optical fibre networks,nonlinear physical impairment,energy-aware routing-wavelength assignment technique,wavelength assignment,integer programming,power consumption minimization,mathematical model,mathematical analysis,optical links,linear programming,operational cost minimization,linear physical impairment,iea-rwa approach,traffic demand,energy consumption,optical wdm networks,physical impairments,optical wavelength division multiplexing network,telecommunication traffic,telecommunication network routing,energy efficiency,optical signal quality guarantee,green optical communication network,wdm network,communication systems
Telecommunications network,Efficient energy use,Computer science,Computer network,Routing and wavelength assignment,Communications system,Integer programming,Linear programming,Multiplexing,Energy consumption
Conference
ISSN
ISBN
Citations 
1550-3607 E-ISBN : 978-1-4577-2051-2
978-1-4577-2051-2
10
PageRank 
References 
Authors
0.60
7
5
Name
Order
Citations
PageRank
Cicek Cavdar116327.77
Marc Ruiz2888.64
Paolo Monti313515.94
Luis Velasco4538.56
lena wosinska544249.88