Migration Planning from Elastic Optical Networks to Spectrally-Spatially Flexible Optical Networks

Lechowicz, Piotr; Spadaro, Salvatore; Rumipamba-Zambrano, Rubén; Walkowiak, Krzysztof; Perelló, Jordi

doi:10.1109/ps.2018.8751494

Cited by 5 publications

(5 citation statements)

References 5 publications

(7 reference statements)

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“…In addition, the rapid evolution of the network size due to the flexibility of virtual networks and the freedom granted to each actor to design their network means that the resource allocation must also consider the architecture of these networks [11]. In optical networks, it will also be necessary to consider the communication spectrum [12]. But our study is not part of the optical networks.…”

Section: Related Workmentioning

confidence: 99%

FSB-DReViSeR: Flow Splitting-Based Dynamic Replacement of Virtual Service Resources for Mobile Users in Virtual Heterogeneous Networks

Myoupo

Tchendji

Yankam

et al. 2020

Journal of Computer Networks and Communications

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Virtual networks are sets of virtual devices that are interconnected through a physical network to provide services to end users. These services are usually heterogeneous (VOIP, VoD, streaming, etc.), exploit various amounts of resources (bandwidth, computing power, servers, etc.), and have topologies different from those of the substrate network. These variations in requirements are traditionally known as the architectural flexibility of virtual networks. Each virtual service is provided through a server called a virtual service resource. When a virtual service resource can no longer provide a good quality of service to end users due to the traffic variation generated by their mobility, two approaches are commonly implemented: provisioning the virtual network with resources or replacing the virtual service resource by migrating the service to another node that offers the most suitable amount of resource to satisfy the quality of service (QoS). In this paper, we propose a flow splitting-based dynamic virtual service resource replacement approach that allows for virtual service replacement across multiple virtual paths. Our approach is based on a graph topology that differs from those in the literature, which are based on tree topologies. The simulations performed in this study show that our approach significantly reduces the virtual service resource replacement time compared to other approaches.

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Section: Related Workmentioning

confidence: 99%

FSB-DReViSeR: Flow Splitting-Based Dynamic Replacement of Virtual Service Resources for Mobile Users in Virtual Heterogeneous Networks

Myoupo

Tchendji

Yankam

et al. 2020

Journal of Computer Networks and Communications

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“…The initial solution for SILS is constructed using another heuristic successfully studied in our previous work related to brownfield migration, i.e., Link with Highest Subcarriers First (LCS) [11]. It consecutively replaces fibers and nodes in the network until the whole traffic can be accommodated applying the following strategy.…”

Section: A Optimization Algorithmmentioning

confidence: 99%

Greenfield Gradual Migration Planning toward Spectrally-Spatially Flexible Optical Networks

Lechowicz

Goścień²,

Rumipamba-Zambrano³

et al. 2019

IEEE Commun. Mag.

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This paper identifies the unavoidably required upgrade of short-term realizable elastic optical networks (EONs) operating over single-mode fibers toward spectrally-spatially flexible optical networks (SS-FONs), exploiting spatial division multiplexing (SDM) technology in order to cope with the expected midand long-term future traffic forecasts. Since a complete EON to SS-FON network migration becomes unrealistic overnight, this paper proposes a gradual greenfield migration strategy employing novel heuristic planning solutions. These solutions allow identifying which network components should be SDM-capable ones, so as to support the forecasted traffic increase at given time. To allow transmission in SS-FON, links should be extended with SDM-capable fibers and nodes should be equipped with SDM-capable re-configurable optical add and drop multiplexers (ROADMs). Using the proposed solutions, a migration case study in a national reference core network is provided and analyzed.

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“…Transmission using SDM fiber is possible only when both connected nodes are SDMcapable. Otherwise, only one fiber/core in the SDM fiber can be utilized (as in EONs over SMFs) [2]. Each spatial mode (i.e., SMF in the SMFB, core in MCF) in the considered network provides 4 THz bandwidth and applies flexible grid of 12.5 GHz granularity.…”

Section: Network Model and Proposed Solutionsmentioning

confidence: 99%

“…We evaluate our proposed solution in a national US network topology (26 nodes, 84 links) [2], considering two scenarios: i) replacement of SMFs with SMFBs; ii) replacement of SMFs with MCFs. Each SDM fiber comprises 22 spatial modes.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…single-mode fiber bundles (SMFBs) or multi-core fibers (MCFs) and, ii) SDM-capable Reconfigurable Optical Add-Drop Multiplexers (SDM-ROADMs) [1]. One of the possible SDM-ROADMs assumed in the literature are broadcast-and-select fully non-blocking ROADMs supporting lane changes (B&S FNB SDM-ROADMs [2,3]). One of the major concerns in MCFs is the effect of inter-core crosstalk (ICXT), i.e., the amount of signal leaking from adjacent cores to currently considered one, when transmitting signals in overlapping spectrum regions.…”

Section: Introductionmentioning

confidence: 99%

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Inter-Core Crosstalk Impact on Migration Planning from Elastic Optical Networks to Spectrally-Spatially Flexible Optical Networks

Lechowicz

Rumipamba-Zambrano

Perelló

et al. 2019

Optical Fiber Communication Conference (OFC) 2019

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Migration Planning from Elastic Optical Networks to Spectrally-Spatially Flexible Optical Networks

Abstract: We focus on a migration planning from elastic to spectrally-spatially flexible optical networks by upgrading regular with SDM-capable ROADMs. Our most promising strategy reveals that by migrating 30% of the regular ROADMs a 2x carried traffic increase can be achieved.

Cited by 5 publications

References 5 publications

FSB-DReViSeR: Flow Splitting-Based Dynamic Replacement of Virtual Service Resources for Mobile Users in Virtual Heterogeneous Networks

FSB-DReViSeR: Flow Splitting-Based Dynamic Replacement of Virtual Service Resources for Mobile Users in Virtual Heterogeneous Networks

Greenfield Gradual Migration Planning toward Spectrally-Spatially Flexible Optical Networks

Inter-Core Crosstalk Impact on Migration Planning from Elastic Optical Networks to Spectrally-Spatially Flexible Optical Networks

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