Results 271 to 280 of about 30,821 (343)

Experimental evaluation of a latency-aware routing and spectrum assignment mechanism based on deep reinforcement learning

Journal of Optical Communications and Networking, 2023
The introduction of futuristic and challenging use cases of 5G and 6G communications will demand strict requirements in terms of high bandwidth and low latency.
Carlos Hernández-Chulde, R. Casellas, R. Martínez, R. Vilalta, R. Muñoz   +4 more
semanticscholar   +1 more source

Deep Reinforcement Learning-Based Routing and Spectrum Assignment of EONs by Exploiting GCN and RNN for Feature Extraction

Journal of Lightwave Technology, 2022
Deep reinforcement learning (DRL) has been introduced to the routing and spectrum assignment (RSA) of elastic optical networks (EONs) where the RSA policies are learnt during the interaction of a DRL agent with the EON environment.
Liufei Xu, Yue-Cai Huang, Yun Xue, Xiaohui Hu   +3 more
semanticscholar   +1 more source

Pre- and post-processing techniques for reinforcement-learning-based routing and spectrum assignment in elastic optical networks

Journal of Optical Communications and Networking, 2023
Research on the routing and spectrum assignment (RSA) problem has long been conducted with the aim of efficiently utilizing the frequency resources of optical networks.
Takafumi Tanaka, Masayuki Shimoda
semanticscholar   +1 more source

On Routing and Spectrum Assignment in Rings

Journal of Lightwave Technology, 2015
We present a theoretical study of the routing and spectrum assignment (RSA) problem in ring networks. We first show that the RSA problem with fixed-alternate routing in general-topology (mesh) networks (and, hence, in rings as well) is a special case of a multiprocessor scheduling problem.
Sahar Talebi, Evripidis Bampis, Giorgio Lucarelli, Iyad Katib, George N. Rouskas   +4 more
openaire   +1 more source

Fragmentation aware routing and spectrum assignment algorithm

2014 IEEE International Conference on Communications (ICC), 2014
In flex-grid (elastic) networks, the spectrum can be allocated at a much finer granularity than it can be allocated in WDM networks. However, the dynamic establishment and tear down of lightpaths yields to the fragmentation of the spectrum with consequent increase in blocking of requests for connection establishment.
Pedro M. Moura, Nelson L. S. da Fonseca, Rafael A. Scaraficci   +2 more
openaire   +1 more source

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

Routing and Spectrum Assignment in Elastic Optical Networks through a Hybrid Approach based on K-Shortest Paths and Q-Learning

Latin American Conference on Computational Intelligence, 2023
Reinforcement learning techniques have been successfully applied to the routing and spectrum assignment problem in elastic optical networks. These techniques offer a promising approach by enabling agents to make sequential decisions based on network ...
Ivan I. Ríos-Villalba, Santiago Arce, Luis Ayala Albertini, Diego Pinto   +3 more
semanticscholar   +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

QoT-aware tree selection, routing, modulation, and spectrum assignment for filterless EONs over the C + L-band

Journal of Optical Communications and Networking, 2023
Filterless optical networks (FONs) as an economical solution use passive couplers/splitters rather than expensive active filter devices. In this way, after intermediate and destination nodes, lightpaths are dropped and continued, which generates leakage ...
M. S. Ghasrizadeh, F. Arpanaei, H. Beyranvand   +2 more
semanticscholar   +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
openaire   +1 more source