Traffic grooming in WDM networks with multi-layer switches

Huiban, Gurvan; Pérennès, Stéphane; Syska, Michel

doi:10.1109/icc.2002.997370

Cited by 13 publications

(4 citation statements)

References 4 publications

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“…We do so by having groomers at multiple granularities at each node. The concept of using a multilayer node architecture was also considered in [9]. However, it failed to identify the full potential of grooming at multiple levels.…”

Section: Introductionmentioning

confidence: 97%

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Efficient dynamic traffic grooming in service-differentiated WDM mesh networks

Madhyastha

Murthy

2004

Computer Networks

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Section: Introductionmentioning

confidence: 97%

“…However, it failed to identify the full potential of grooming at multiple levels. In the architecture used in [9], any add-drop traffic has to pass through the complete hierarchy from bottom to top. Due to this dependence between levels, switching cost benefits are obtained only at the intermediate nodes of lightpaths.…”

Section: Introductionmentioning

confidence: 99%

Efficient dynamic traffic grooming in service-differentiated WDM mesh networks

Madhyastha

Murthy

2004

Computer Networks

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“…The authors in [5] proposed a destination-based lightpath-grouping heuristic algorithm to take advantage of waveband switching. Reference [6] developed a mixed integer linear programming (MILP)based approach to design a generic two-layer network. The work in [7] presented heuristic approaches for designing twolayer (waveband and wavelength) networks.…”

Section: Introductionmentioning

confidence: 99%

Design of hybrid optical networks with waveband and electrical TDM switching

Yao¹,

Ou²,

Mukherjee³

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)

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We propose a hybrid optical-electrical switch architecture which integrates all-optical waveband switching and electrical time-division-multiplexed (TDM) switching. By grouping pass-through traffic into wavebands and switching them alloptically, the hybrid architecture can significantly reduce the size of electrical switch and number of associated transponders. As a result, it provides tens of terabits per second switch throughput with a small footprint. The proposed architecture is capable of TDM switching, wavelength conversion, and multicasting. In this paper, we investigate the network-optimization problem with static traffic to minimize the overall network switch cost. A mathematical formulation of the optimization problem and its solutions are presented. Fast heuristic approaches for nearoptimal solutions are also proposed and evaluated. GLOBECOM

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“…groom traffic in a slightly different context, for example , in the RNRT project PORTO our team developed with France Telecom and Alcatel, the traffic was expressed in terms of STM-1 (each one needed one wavelength) and we group them into bands or fibers, typically a fiber containing 8 bands of 4 wavelengths [18].…”

mentioning

confidence: 99%

Traffic grooming in unidirectional WDM ring networks using design theory

Bermond

Coudert

IEEE International Conference on Communications, 2003. ICC '03.

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We address the problem of traffic grooming in WDM rings with all-to-all uniform unitary traffic. We want to minimize the total number of SONET add-drop multiplexers (ADMs) required. We show that this problem corresponds to a partition of the edges of the complete graph into subgraphs, where each subgraph has at most C edges (where C is the grooming ratio) and where the total number of vertices has to be minimized. Using tools of graph and design theory, we optimally solve the problem for practical values and infinite congruence classes of values for a given C, and thus improve and unify all the preceding results. We disprove a conjecture of [7] saying that the minimum number of ADMs cannot be achieved with the minimum number of wavelengths, and also another conjecture of [17].

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Traffic grooming in WDM networks with multi-layer switches

Cited by 13 publications

References 4 publications

Efficient dynamic traffic grooming in service-differentiated WDM mesh networks

Efficient dynamic traffic grooming in service-differentiated WDM mesh networks

Design of hybrid optical networks with waveband and electrical TDM switching

Traffic grooming in unidirectional WDM ring networks using design theory

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