272views Communications» more  ICC 2011»
12 years 6 months ago
Dynamic Anycast Routing and Wavelength Assignment in WDM Networks Using Ant Colony Optimization (ACO)
—Ant colony optimization (ACO) is a probabilistic technique used for solving complex computational problems, such as finding optimal routes in networks. It has been proved to pe...
Kavitha Bhaskaran, Joan Triay, Vinod Vokkarane
165views more  JGO 2011»
12 years 9 months ago
A biased random-key genetic algorithm for routing and wavelength assignment
The problem of routing and wavelength assignment (RWA) in wavelength division multiplexing (WDM) optical networks consists in routing a set of lightpaths and assigning a wavelength...
Thiago F. Noronha, Mauricio G. C. Resende, Celso C...
210views more  TON 2010»
13 years 1 months ago
A New Approach to Optical Networks Security: Attack-Aware Routing and Wavelength Assignment
Abstract-- Security issues and attack management in transparent WDM (Wavelength Division Multiplexing) optical networks has become of prime importance to network operators due to t...
Nina Skorin-Kapov, J. Chen, Lena Wosinska
88views more  INFORMATICALT 2010»
13 years 4 months ago
Inapproximability Results for Wavelength Assignment in WDM Optical Networks
We address the issue of inapproximability of the wavelength assignment problem in wavelength division multiplexing (WDM) optical networks. We prove that in an n-node WDM optical ne...
Keqin Li
185views more  OSN 2007»
13 years 5 months ago
Comparison of ILP formulations for the RWA problem
— We present a review of the various integer linear programming (ILP) formulations that have been proposed for the routing and wavelength assignment problem in WDM optical networ...
Brigitte Jaumard, Christophe Meyer, B. Thiongane
77views more  JCO 2002»
13 years 6 months ago
Traffic Partition in WDM/SONET Rings to Minimize SONET ADMs
SONET(SynchronousOpticalNETworks)add-dropmultiplexers(ADMs)arethedominantcostfactor in the WDM(Wavelength Division Multiplexing)/SONET rings. The number of SONET ADMs required by a...
Gruia Calinescu, Peng-Jun Wan
80views more  COMCOM 2006»
13 years 6 months ago
The prediction-based routing in optical transport networks
In optical networks, the traditional routing problem is generally decoupled into two subproblems, the route selection and the wavelength assignment. Usual RWA (Routing and Wavelen...
Eva Marín-Tordera, Xavier Masip-Bruin, Serg...
101views more  ANOR 2006»
13 years 6 months ago
Comparison of wavelength requirements between two wavelength assignment methods in survivable WDM networks
We consider the routing and wavelength assignment (RWA) in survivable WDM network. A path protection scheme assumed and two different wavelength assignment methods for protection p...
Taehan Lee, Sungsoo Park
13 years 8 months ago
QoT-Aware Routing in Impairment-Constrained Optical Networks
—In this paper, we consider the problem of routing and wavelength assignment (RWA) in all-optical networks, where signals propagate in the optical domain (with no electrical rege...
Jun He, Maïté Brandt-Pearce, Yvan Poin...
13 years 10 months ago
Wavelength Assignment in Optical Networks with Imprecise Network State Information
Efficient routing and wavelength assignment (RWA) in wavelength-routed all-optical networks is critical for achieving high efficiency over the backbone links. Extensive research ha...
Satyajeet Ahuja, Marwan Krunz, Srinivasan Ramasubr...