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Dynamic on-demand defragmentation in flexible bandwidth elastic optical networks.
Yin, Yawei; Wen, Ke; Geisler, David J; Liu, Ruiting; Yoo, S J B.
Afiliação
  • Yin Y; Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA. yyin@ucdavis.edu
Opt Express ; 20(2): 1798-804, 2012 Jan 16.
Article em En | MEDLINE | ID: mdl-22274524
While flexible bandwidth elastic optical networking is a promising direction for future networks, the spectral fragmentation problem in such a network inevitably raises the blocking probability and significantly degrades network performance. This paper addresses the spectral defragmentation problem using an auxiliary graph based approach, which transforms the problem into a matter of finding the maximum independent set (MIS) in the constructed auxiliary graph. The enabling technologies and defragmentation-capable node architectures, together with heuristic defragmentation algorithms are proposed and evaluated. Simulation results show that the proposed min-cost defragmentation algorithms can significantly reduce the blocking probability of incoming requests in a spectrally fragmented flexible bandwidth optical network, while substantially minimizing the number of disrupted connections.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2012 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2012 Tipo de documento: Article