Results 11 to 20 of about 3,418 (288)

Spectrum Allocation Policy in Elastic Optical Networks [PDF]

International Journal of Electronics and Telecommunications, 2017
Abstract The considered problem covers routing and spectrum allocation problem (RSA problem) in Elastic Optical Networks while maintaining the spectrum continuity constraints, non-overlapping spectra constraints for adjacent connections on individual links of the network and spectrum contiguity constraints of the connection.
Olszewski, I., Ireneusz Olszewski, Olszewski, Ireneusz   +2 more
openaire   +3 more sources

Analytical performance modeling of elastic optical links with aligned spectrum allocation [PDF]

Computer Networks, 2015
Elastic optical networking has recently been proposed for use in optical transport networks to cope with increasingly heterogeneous and dynamic demand patterns. In this paper, we study the blocking performance of a multi-class elastic optical link for which a demand needs to be allocated a contiguous subset of the entire spectrum.
Kaveh Vaezi, Nail Akar
openaire   +4 more sources

Benefits of elastic spectrum allocation in optical networks with dynamic traffic [PDF]

2014 IEEE Latin-America Conference on Communications (LATINCOM), 2014
Traditional optical core networks based on Wavelength Division Multiplexing (WDM) provide optical channels (wavelengths) rigidly allocated over the optical spectrum and separated by 50 or 100 GHz. The novel concept of Elastic Optical Network (EON) can help to improve network flexibility by allocating multiple sub-channels to incoming connection ...
M. Recalcati, MUSUMECI, FRANCESCO, TORNATORE, MASSIMO, BREGNI, STEFANO, PATTAVINA, ACHILLE   +4 more
openaire   +4 more sources

Valid inequalities for the routing and spectrum allocation problem in elastic optical networks [PDF]

2014 16th International Conference on Transparent Optical Networks (ICTON), 2014
We deal with a natural integer-linear programming formulation of the routing and spectrum allocation (RSA) problem in elastic optical networks. We focus on strengthening the formulation with valid inequalities (cuts). For this purpose we apply clique inequalities that proved to be useful in other applications of this kind.
Klinkowski, Miroslaw, Pioro, Michal, Zotkiewicz, Mateusz, Ruiz Ramírez, Marc, Velasco Esteban, Luis Domingo   +4 more
openaire   +3 more sources

An Enhanced Dynamic Spectrum Allocation Algorithm Based on Cournot Game in Maritime Cognitive Radio Communication System

Algorithms, 2017
The recent development of maritime transport has resulted in the demand for a wider communication bandwidth being more intense. Cognitive radios can dynamically manage resources in a spectrum.
Jingbo Zhang, Henan Yu, Shufang Zhang
doaj   +2 more sources

Spectrum allocation problem in elastic optical networks - a branch-and-price approach

2015 17th International Conference on Transparent Optical Networks (ICTON), 2015
In the paper we present a branch and price approach to routing and spectrum allocation – a basic optimization problem in elastic optical networks. We formulate the problem as a mixed-integer program for which we develop a branch and price algorithm enhanced with such techniques as cutting planes for improving lower bounds for the optimal ...
Pioro, Michal, Klinkowski, Miroslaw, Zotkiewicz, Mateusz, Walkowiak, Krzysztof, Ruiz Ramírez, Marc, Velasco Esteban, Luis Domingo   +5 more
openaire   +3 more sources

A column generation technique for routing and spectrum allocation in cloud–ready survivable elastic optical networks

International Journal of Applied Mathematics and Computer Science, 2017
Driven by increasing user requirements and expectations, the fast development of telecommunications networks brings new challenging optimization problems.
Goścień Róża, Walkowiak Krzysztof
doaj   +3 more sources

Fragmentation and ISRS-Aware Survivable Routing, Band, Modulation, and Spectrum Allocation Algorithm in Multi-Band Elastic Optical Networks

Applied Sciences
The C+L band elastic optical networks (C+L-EONs) increase the network capacity significantly. However, the introduction of an L band enhances the inter-channel stimulated Raman scattering effect (ISRS), consequently deteriorating the quality of ...
Yunxuan Liu, Nan Feng, Lingfei Shen, Jingjing Lv, Dan Yan, Jijun Zhao   +5 more
doaj   +2 more sources

New core and spectrum balancing algorithms for space division multiplexed elastic optical networks [PDF]

, 2021
This paper proposes two new algorithms for core and spectrum allocation in Elastic Optical Networks with Space Division Multiplexing. In order to avoid the effect of inter-core crosstalk, a Core Balancing Algorithm (CBA) is proposed for core allocation ...
Cartaxo, A. V. T., Soares, A. C. B., Lacerda, J. C.   +2 more
core   +2 more sources

A distributed algorithm for wireless resource allocation using coalitions and the Nash bargaining solution [PDF]

, 2011
In this paper a distributed, low-complexity, fast and fair resource allocation algorithm for a multiuser, wireless LTE OFDMA channel is proposed. Based on the game theoretic concept of the Nash Bargaining Solution and by grouping users into coalitions of
Vatsikas, S, De Vos, Marina, Lewis, Tim, Armour, SMD   +3 more
core   +1 more source