Results 231 to 240 of about 28,993 (284)

Routing and Wavelength (Spectrum) Assignment

2020
Routing a connection from its source to its destination is a fundamental component of network design. The choice of route affects numerous properties of a connection, most notably cost, latency, and availability, as well as the resulting level of congestion in the network.
Jane M. Simmons, George N. Rouskas
openaire   +1 more source

Cognitive Radio Routing and Optimal Spectrum Assignment Algorithm

Advanced Materials Research, 2011
Aiming to the shortcoming of traditional route protocols in cognitive radio networks, cognitive radio routing and optimal spectrum assignment (CRRSA) algorithm was proposed. In this paper, we consider the situation that non-interfering among the adjacent jump, and present the optimal allocation of available spectrum, and then calculate the bandwidth of
Zhan Jun Liu, Feng Xie Qin, Qian Bin Chen   +2 more
openaire   +1 more source

Routing, Code, and Spectrum Assignment (RCSA) in Elastic Optical Networks

Optical Fiber Communication Conference, 2015
Elastic optical networks (EONs) are an attractive solution for backbones due to the offered potential flexibility and spectral efficiency. In EONs, an optical connection is allocated by solving the problem of routing and spectrum assignment (RSA). Based on the RSA output, a portion of spectrum—whose width depends on transmission parameters (e.g., bit ...
SAMBO, Nicola, MELONI, GIANLUCA, CUGINI, FILIPPO, D'ERRICO, ANTONIO, POTI', LUCA, Iovanna, P., CASTOLDI, Piero   +6 more
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Routing and Spectrum Assignment Algorithm Maximizes Spectrum Utilization in Optical Networks

37th European Conference and Exposition on Optical Communications, 2011
This paper proposes a routing and spectrum assignment algorithm for elastic optical networks. The algorithm achieves high utilization of spectrum resources by considering the consecutiveness of common available spectrum slots among relevant fibers.
Yoshiaki Sone, Akira Hirano, Akihiro Kadohata, Masahiko Jinno, Osamu Ishida   +4 more
openaire   +1 more source

Routing and Spectrum Assignment in Spectrum Sliced Elastic Optical Path Network

IEEE Communications Letters, 2011
A spectrum-sliced elastic optical path network (SLICE) architecture has been recently proposed as an efficient solution for a flexible bandwidth allocation in optical networks. In SLICE, the problem of Routing and Spectrum Assignment (RSA) emerges.
Miroslaw Klinkowski, Krzysztof Walkowiak
openaire   +1 more source

Dynamic Routing and Spectrum Assignment in Spectrum-Flexible Transparent Optical Networks

Journal of Optical Communications and Networking, 2012
The continual growth of Internet traffic necessitates a high-capacity transmission platform and also highlights the importance of a multi-granularity transport network due to the flexible bitrates of Internet traffic. To meet these challenges, a spectrum-flexible optical network based on orthogonal frequency-division multiplexing (OFDM) transmission ...
Xin Wan, Nan Hua, Xiaoping Zheng
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Routing and Spectrum Assignment in Elastic Filterless Optical Networks

IEEE/ACM Transactions on Networking, 2016
Elastic optical networking is considered a promising candidate to improve the spectral efficiency of optical networks. One of the most important planning challenges of elastic optical networks is the NP-hard routing and spectrum assignment (RSA) problem.
Emile Archambault, Nabih Alloune, Marija Furdek, Zhenyu Xu, Christine Tremblay, Ajmal Muhammad, Jiajia Chen, Lena Wosinska, Paul Littlewood, Michel P. Belanger   +9 more
openaire   +1 more source

Multicast Routing and Spectrum Assignment in Elastic Optical Networks

Asia Communications and Photonics Conference, 2012
Modulation-Enabled node model is introduced in Elastic Optical Networks (EON), which describes the capability of changing Modulation Level (ML) dynamically. A novel multicast RSA algorithm is proposed and validated. Simulation results show its good performance.
Ziyan Yu, Yongli Zhao, Jie Zhang, XiaoSong Yu, BoWen Chen, Xuefeng Lin   +5 more
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Algorithm for energy efficient routing, modulation and Spectrum Assignment

2015 IEEE International Conference on Communications (ICC), 2015
Information and Communication Technology activities consumed 4% of the world energy in 2009, and such consumption will continue to increase due to the traffic growth of the Internet predicted for the next years. Techniques to make the core of the network more energy efficient has been proposed, among them, green routing has been considered a promising ...
Pedro M. Moura, Rafael A. Scaraficci, Nelson L. S. da Fonseca   +2 more
openaire   +1 more source

On the Routing and Spectrum Assignment with Multiple Objectives

Advanced Photonics for Communications, 2014
We study the routing and spectrum assignment problem with simultaneous minimizing of spectrum link and congestion level. We demonstrate that integrated objective approach could achieve better solutions than traditional ones based on single objective.
Dao Hai, Michel Morvan, Philippe Gravey
openaire   +1 more source