Multi-hour network planning based on domination between sets of traffic matrices

Pavón‐Mariño, Pablo; Garcia-Manrubia, B.; Aparicio-Pardo, Ramón

doi:10.1016/j.comnet.2010.10.013

Cited by 9 publications

(11 citation statements)

References 21 publications

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“…Besides, it has been observed that traffic variation along a given period of time (typically days or weeks) tends to be periodic, making the expected traffic load in a network fairly predictable [56]. Hence, RSA schemes with expansion/contraction features can be better designed having some knowledge of the (expected) traffic fluctuations profile.…”

Section: Time-varying Trafficmentioning

confidence: 99%

A tutorial on the flexible optical networking paradigm: State of the art, trends, and research challenges

et al. 2014

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| Rigid fixed-grid wavelength division multiplexing (WDM) optical networks can no longer keep up with the emerging bandwidth-hungry and highly dynamic services in an efficient manner. As the available spectrum in optical fibers becomes occupied and is approaching fundamental limits, the research community has focused on seeking more advanced optical transmission and networking solutions that utilize the available bandwidth more effectively. To this end, the flexible/ elastic optical networking paradigm has emerged as a way to offer efficient use of the available optical resources. In this work, we provide a comprehensive view of the different pieces composing the ''flexible networking puzzle'' with special attention given to capturing the occurring interactions between different research fields. Only when these interrelations are clearly defined, an optimal network-wide solution can be offered. Physical layer technological aspects, network optimization for flexible networks, and control plane aspects are examined. Furthermore, future research directions and open issues are discussed.

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Section: Time-varying Trafficmentioning

confidence: 99%

A tutorial on the flexible optical networking paradigm: State of the art, trends, and research challenges

et al. 2014

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“…The goal is to meet optimization objectives jointly for a set of varying traffic demands that are predictable and periodic along some time period (such as the day or week) [29]. Afterwards, in Section V, we use the models to analyse the impact of spectrum adaptation on network performance.…”

Section: Offline Mh-rsamentioning

confidence: 99%

Elastic Spectrum Allocation for Time-Varying Traffic in FlexGrid Optical Networks

Klinkowski

Ruiz

Velasco

et al. 2013

IEEE J. Select. Areas Commun.

138

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Elastic flexgrid optical networks (FG-ON) are considered a very promising solution for next-generation optical networks. In this article we focus on lightpath adaptation under variable traffic demands in FG-ON. Specifically, we explore the elastic spectrum allocation (SA) capability of FG-ON and, in this context, we study the effectiveness of three alternative SA schemes in terms of the network performance. To this end, we formulate a Multi-Hour Routing and Spectrum Allocation (MH-RSA) optimization problem and solve it by means of both Integer Linear Programming (ILP) and efficient heuristic algorithms. Since, as numerical results show, the effectiveness of SA schemes highly depends on the traffic demand profile, we formulate some indications on the applicability of elastic SA in FG-ON.

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“…Eventually, the greedy approach with reconfiguration flattening (GARF), also utilizing the tabu search meta-heuristic, is proposed in [19]. Finally, the concept of domination between traffic matrices (TMs) is proposed for large problem instances in [20,21].…”

Section: Related and Previous Workmentioning

confidence: 99%

Algorithms for the Multi-Period Power-Aware Logical Topology Design With Reconfiguration Costs

Bonetto¹,

Chiaraviglio²,

Idzikowski

et al. 2013

J. Opt. Commun. Netw.

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We tackle the problem of reducing power consumption in IP-over-WDM networks, targeting the power-aware logical topology design (LTD). Unlike the previous work in the literature, our solution reduces the power consumption with consideration of the cost (in terms of reconfigured traffic) incurred when the network is reconfigured. We first formulate the LTD with reconfiguration costs as an optimization problem. Then, we present three heuristics to effectively solve it. We compare our algorithms over an extensive set of networks and scenarios. Results indicate that our algorithms are effective in reducing power consumption while limiting the amount of traffic that is reconfigured. Moreover, we show that the input parameters are intuitive and easy to set, which makes our algorithms more practical.

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Multi-hour network planning based on domination between sets of traffic matrices

Cited by 9 publications

References 21 publications

A tutorial on the flexible optical networking paradigm: State of the art, trends, and research challenges

A tutorial on the flexible optical networking paradigm: State of the art, trends, and research challenges

Elastic Spectrum Allocation for Time-Varying Traffic in FlexGrid Optical Networks

Algorithms for the Multi-Period Power-Aware Logical Topology Design With Reconfiguration Costs

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