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Master's Dissertation
DOI
10.11606/D.18.2011.tde-13022012-155726
Document
Author
Full name
Arturo Miranda Vera
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2011
Supervisor
Committee
César, Amílcar Careli (President)
Lopes, Alneu de Andrade
Rocha, Mônica de Lacerda
Title in Portuguese
Propriedades de redes complexas de telecomunicações
Keywords in Portuguese
Algoritmos de roteamento do tráfego e alocação de comprimento de onda
Redes complexas
Redes ópticas
Sistemas complexos
Abstract in Portuguese
Os objetivos desta monografia foram analisar as propriedades de topologias de redes complexas, analisar as potencialidades e comparar desempenho de softwares gratuitos de geração de topologias e simular roteamento de tráfego em redes de telecomunicações. As principais topologias analisadas foram a regular, aleatória e livre de escala. As propriedades topológicas incluem o grau nodal, a distribuição de grau, o coeficiente de agrupamento, o comprimento médio do caminho, além do efeito mundo pequeno. Foram avaliadas as potencialidades de três ferramentas gratuitas de geração e análise de redes, o B-A, Pajek e NetLogo. Como exemplos de aplicação em redes de telecomunicações, com destaque para redes ópticas utilizando técnica de multiplexação por divisão de comprimento de onda, foram implementados os seguintes algoritmos de roteamento de tráfego: roteamento fixo com alocação de comprimento de onda sequencial fixa e roteamento adaptativo com alocação de comprimento de onda menos usado, mais usado, aleatória e busca exaustiva. O desempenho dos algoritmos de roteamento e alocação de comprimentos de onda de modo nas topologias analisadas foram comparados.
Title in English
Properties of complex networks telecommunications
Keywords in English
Complex networks
Complex systems
Optical networks
Traffic routing algorithms
Wavelength allocation
Abstract in English
The purposes of this master's thesis are to analyze the properties of complex network topologies, analyze and compare the performance of free software for generating topologies and simulate traffic routing in telecommunication networks. The main topologies analyzed were the regular, random and scale-free. The topological properties include the nodal degree, the distribution degree, clustering coefficient, average path length and small-world effect. The performance of the free softwares B-A, Pajek and Netlogo were evaluated. As examples of application in telecommunication networks, especially for optical networks using wavelength division multiplexing technique, the following routing traffic algorithms were implemented: Fixed routing with first-fit wavelength assignment and adaptive routing with least used wavelength assignment, most used, random and exhaustive search. The performance of algorithms for routing and wavelength allocation employed in the analyzed topologies was compared.
 
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Arturo.pdf (3.37 Mbytes)
Publishing Date
2012-02-29
 
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