Simulation studies of elastic optical networks based on 3-stage Clos switching fabric

Głąbowski, Mariusz; Ivanov, Hristo; Leitgeb, Erich; Sobieraj, Maciej; Stasiak, Maciej

doi:10.1016/j.osn.2020.100555

Cited by 15 publications

(11 citation statements)

References 13 publications

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“…Applications: The ARMONIA architecture serves the entire metropolitan network segment and provides agility and dynamism, especially for mobile network services, access networks, cloud computing and edge computing. [51] multistage allocated in CO, with large number of ports, and implement DWDM to tolerate multiple wavelengths in the access segment. The MC/MA node segment is a translucent network where IP routers are implemented, with OEO conversion on some of the nodes, generating islands of transparency.…”

Section: ) Armoniamentioning

confidence: 99%

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Metropolitan Optical Networks: A Survey on New Architectures and Future Trends

Sousa¹,

Drummond²

2022

Preprint

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Metropolitan optical networks are undergoing major transformations to continue being able to provide services that meet the requirements of the applications of the future. The arrival of the 5G will expand the possibilities for offering IoT applications, autonomous vehicles, and smart cities services while imposing strong pressure on the physical infrastructure currently implemented, as well as on static traffic engineering techniques that do not respond in an agile way to the dynamic and heterogeneous nature of the upcoming traffic patterns. In order to guarantee the strictest quality of service and quality of experience requirements for users, as well as meeting the providers' objectives of maintaining an acceptable trade-off between cost and performance, new architectures for metropolitan optical networks have been proposed in the literature, with a growing interest starting from 2017. However, due to the proliferation of a dozen of new architectures in recent years, many questions need to be investigated regarding the planning, implementation, and management of these architectures, before they could be considered for practical application. This work presents a comprehensive survey of the new proposed architectures for metropolitan optical networks. Firstly, the main data transmission systems, equipment involved, and the structural organization of the new metro ecosystems are discussed. The already established and the novel architectures are presented, highlighting its characteristics and application, and comparative analysis among these architectures is carried out identifying the future technological trends. Finally, outstanding research questions are drawn to help direct future research on the field. Among the conclusions of this survey, the application of flexible spectrum allocation technologies seems to be the right, and necessary, evolution path for metropolitan optical network architectures.

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Section: ) Armoniamentioning

confidence: 99%

“…Figure18. MC/MA nodes are Clos optical switches[51] multistage allocated in CO, with large number of ports, and implement DWDM to tolerate multiple wavelengths in the access segment. The MC/MA node segment is a translucent network where IP routers are implemented, with OEO conversion on some of the nodes, generating islands of transparency.…”

mentioning

confidence: 99%

Metropolitan Optical Networks: A Survey on New Architectures and Future Trends

Sousa¹,

Drummond²

2022

Preprint

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“…The spectrum defragmentation strategy has been implemented for differentiated services in EONs in the work of Yao et al 32 This strategy was used to decrease BP and connection setup time and improved the spectrum utilization efficiency. Glabowski et al 33 presented a simulation study based on three‐stage CoS switching fabric to find the probability of loss for the individual traffic demand. The real‐time network traffic is classified using machine learning in Dias et al 34 When the network is experiencing traffic congestion, some services need to be prioritized to avoid the random loss of data.…”

Section: Related Workmentioning

confidence: 99%

“…The main motive of using CoS differentiation is to utilize the network resources efficiently with the acceptance of higher CoS requests as compared to the lower CoS requests in order to achieve the maximum profit or revenue for the network service provider and enhance customer satisfaction level. All the reported works in previous studies 15,18,19,30–34 prioritized the network traffic as per CoS without including PL and requested bandwidth information during RSA phase. In this way, this is the first work that jointly considere the CoS, PL, and requested bandwidth demand information and propose a CFCoSP strategy.…”

Section: Related Workmentioning

confidence: 99%

Cost function‐based class of service provisioning strategy in elastic optical networks

Dixit

Batham

Narwaria

2020

Int J Communication

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SummaryThe recent fog‐and‐cloud computing, Internet of things (IoT), artificial intelligence, machine learning, and store‐and‐forward datacenter applications gradually increase the Internet traffic. The arrival of this traffic is periodic, which remains high during certain time duration (known as peak or working/office hour) each day, resulting in an increase in the resource bottleneck problem, which causes high connections blocking. Due to these, many commercial and business data services may lose their connections which contain the urgent and important information. In order to handle such a critical situation in elastic optical networks (EONs), prioritization of connection requests based on the differentiated class of service (CoS) is a must. In this paper, the network traffic is categorized into three CoS requests. These are CoS1 (real‐time traffic), CoS2 (nonreal‐time traffic), and CoS3 (delay‐tolerant traffic) and proposed a cost function‐based CoS provisioning (CFCoSP) strategy in which the connection requests are served as per an increasing value of cost function. The cost function is a cumulative function of CoS, pathlength, and requested bandwidth demand (i.e., number of frequency slots required). The simulations are performed on INDIAN and ARPANET network topologies under uniform CoS ratio (i.e., CoS1:CoS2:CoS3 = 1:1:1) on the metrics of connection established, bandwidth blocking probability, resource utilization ratio, and network capacity utilization. The simulation results verify that the proposed CFCoSP strategy shows significantly improved performances as compared to an existing non‐cost CoS provisioning (CoSP) strategy on the investigated metrics.

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“…Another research area that has not yet been addressed in the literature is the determination of traffic characteristics of blocking optical switching networks to which a mixture of traffic streams with different characteristics (the size of demanded resources, the intensity of demand arrival) is offered. The first simulation studies on switching networks with a Clos structure used in optical switching networks [21], [22] are discussed in [23]. A purpose-made simulator has the advantage of determining loss probabilities for individual call classes, depending on the structure of the network (the number of switches, the number of inputs/outputs, the capacity of the links) as well as the traffic structure offered to a switching network.…”

Section: Introductionmentioning

confidence: 99%

Analytical Modeling of Switching Fabrics of Elastic Optical Networks

et al. 2020

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This article proposes an analytical method for determining the traffic characteristics of multi-service switching networks in elastic optical networks. The method takes into consideration the limitations of W-S-W (wavelength-space-wavelength) switching networks in the execution of multi-slot connections in line with the concept of elastic optical networks. The results obtained on the basis of the developed analytical model are compared with the results obtained from the simulation experiments for a selected structure of a switching network. The study confirms the high accuracy of the proposed model. The model can be used to optimize and evaluate the effectiveness of blocking optical switching networks. INDEX TERMS elastic optical networks, energy-aware systems, multi-service traffic, optical switches, switching network, traffic engineering.

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Simulation studies of elastic optical networks based on 3-stage Clos switching fabric

Cited by 15 publications

References 13 publications

Metropolitan Optical Networks: A Survey on New Architectures and Future Trends

Metropolitan Optical Networks: A Survey on New Architectures and Future Trends

Cost function‐based class of service provisioning strategy in elastic optical networks

Analytical Modeling of Switching Fabrics of Elastic Optical Networks

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