Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies

Jinno, Masahiko; Takara, H.; Kozicki, Bartłomiej; Tsukishima, Yukio; Sone, Yuji; Matsuoka, Satoshi

doi:10.1109/mcom.2009.5307468

Cited by 1,435 publications

(639 citation statements)

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“…Consequently, network providers will require a new generation of optical transport networks in the near future, so as to serve this huge and heterogeneous volume of traffic in a cost-effective and scalable manner [1]. The elastic optical network (EON) architecture has been proposed [2,3] as the solution to these large capacity and diverse traffic granularity needs of the future Internet.…”

Section: Introductionmentioning

confidence: 99%

Optimized traffic profile for FlexGrid optical networks

Liu

Comellas

2017

Photon Netw Commun

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This work is focused on studying the connections bandwidth distribution effects on the FlexGrid network performance. An accurate study of spectrum occupancy in heavy loaded FlexGrid optical networks is carried out. This analysis is useful to figure out which traffic profiles are more suitable for this kind of networks. Two different cases are considered with respect to the offered connections. In the Elastic case, connections sizes can take any value from 1 to a maximum number of spectrum slots. In the MultiRate case, only three connections sizes are allowed. It is demonstrated that by generating the connections with some specific statistical properties, the network performance is improved. These properties are derived from the theoretical study of spectrum occupation in ideal conditions. The main contribution of this work is therefore the proposal of an Optimum traffic profile which allows to efficiently using the spectrum in FlexGrid optical networks. The gain obtained by generating the proposed traffic profile is evaluated by means of simulations at the link as well as at the whole network level.

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Section: Introductionmentioning

confidence: 99%

Optimized traffic profile for FlexGrid optical networks

Liu

Comellas

2017

Photon Netw Commun

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“…Current state of the art optical transport networks employ Dense Wavelength Division Multiplexed (DWDM) transmission with perwavelength capacities of 10, 40, or 100 Gbps [1,2]. Not only the per-wavelength capacities have increased recently, the reach of the optical signals has expanded significantly making it possible to reduce the Optical-Electrical-Optical (OEO) regeneration costs [3]. Optical cross-connects (OXC) (with or without wavelength conversion capability) have the wavelength switching capability to route the optical signal from one end point to another in DWDM networks, hence referred to as a Wavelength Routed Network (WRN).…”

Section: Introductionmentioning

confidence: 99%

“…A recent paradigm, called Elastic Optical Networks (EON), has recently emerged as a short-term solution addressing the issues that DWDM-based WRNs raise [2,3]. EONs rely on the flexgrid scheme where the available optical spectrum is divided into frequency slots that have finer spectral width compared to the 50 GHz ITU-T frequency grid.…”

Section: Introductionmentioning

confidence: 99%

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Analytical performance modeling of elastic optical links with aligned spectrum allocation

Vaezi

Akar

2015

Computer Networks

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a b s t r a c tElastic optical networking has recently been proposed for use in optical transport networks to cope with increasingly heterogeneous and dynamic demand patterns. In this paper, we study the blocking performance of a multi-class elastic optical link for which a demand needs to be allocated a contiguous subset of the entire spectrum. This problem is different than the well-known blocking problem in multi-class multi-server loss systems due to the contiguous allocation constraint. We first propose a non-work-conserving aligned spectrum allocation policy which is shown to outperform the conventional first fit-based work-conserving allocation policy without alignment. Subsequently, for blocking performance of an aligned elastic optical link with up to three different traffic classes, we propose a novel and systematic order reduction procedure for MMPPs (Markov Modulated Poisson Process) and use this procedure as the numerical engine to approximately obtain the blocking probabilities. The proposed numerical algorithm is validated under various system and traffic parameters and is shown to be effectively usable as an instrument to dimension elastic optical links.

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“…Bandwidth allocation is common in many network applications such as content distribution networks or mobile clients, which require bandwidth reservations to support hangovers for streaming video [1,2]. In particular our problem is motivated by the DWDM (dense wavelength division multiplexing) network [4,5,7]. In optical networks, high-speed signals are sent through optical fibers using WDM technology in which a signal transmitted from a source to a destination is given some wavelength.…”

Section: Introductionmentioning

confidence: 99%