Estratégias de controle dinâmico de caminhos ópticos sobre redes fotônicas WDM utilizando inteligência de enxame. / Strategies for dynamic lightpath control in WDM photonic networks using swarm intelligence.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2011

RESUMO

A fundamental aspect of photonic networks based on wavelength division multiplexing (WDM) technology is the control of optical paths. An optical path, or lightpath, is a purely optical connection established between two network nodes, which can pass through several intermediate nodes. To efficiently support the demands required from a WDM network that runs high performance applications, the optical paths should be established and finished dynamically, in such a way that the selected routes and wavelengths tend to minimize the blocking probability due to the lack of available resources. The central element of a WDM network is the system that controls the optical switches, determines routes, allocates the wavelengths, and establishes, maintains and finishes connections between optical network nodes. The purpose is to present strategies for routing and wavelength assignment over photonic networks using heuristics based on swarm intelligence. Results show that the developed strategies exhibit low blocking probability of requests and find the paths of minimum cost whenever possible. The strategies developed take into account the dynamics of the network, and decisions are based on updated data at each network node in real time without the need of a complete knowledge of network state at each node.

ASSUNTO(S)

comunicação de dados data communications distributed systems inteligência de enxame redes ópticas wdm sistemas distribuídos swarm intelligence wdm optical networks

ACESSO AO ARTIGO

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