Modelling of single-sided multiservice switching structures

Głąbowski, Mariusz; Sobieraj, Maciej; Stasiak, Maciej

doi:10.1016/j.comnet.2021.108136

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…Research on the combinatorial properties of non-blocking switching networks is of great importance for optimizing the structures of blocking switching networks, because it can be a starting point for their effective construction. Concurrently, there is a growing body of research addressing blocking switching networks accommodating multi-service traffic [20]- [22]. The development of an EON node simulator predicated on the Clos structure [21] is one of the noteworthy aspects, with its authors presenting loss probability outcomes for various call classes directed to the switching fabric.…”

Section: State Of the Artmentioning

confidence: 99%

Advanced Considerations Concerning Impact of Applied Call Admission Control Mechanisms on Traffic Characteristics in Elastic Optical Network Nodes

Głąbowski,

Sobieraj

2023

JTIT

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Over the past few years, a significant increase in network traffic volumes has been observed. The ever growing bandwidth demands mean that a reliable and optimum service level needs to be ensured in communication systems for specific traffic categories. Optimal allocation and use of resources may be achieved through the use of call admission control (CAC) mechanisms implemented in network systems. The resource reservation mechanism and the threshold mechanism are two of the most popular CAC methods. In the reservation mechanisms, a certain number of resources is reserved for selected (predefined) services only. In the case of threshold mechanisms, the number of resources allocated to individual traffic classes depends on the network load. This article discusses the results of simulations verifying the impact of applied CAC mechanisms on the traffic characteristics in elastic optical network (EON) nodes with a Clos structure. Loss probability results obtained with the use of the simulator are presented as well.

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Section: State Of the Artmentioning

confidence: 99%

Advanced Considerations Concerning Impact of Applied Call Admission Control Mechanisms on Traffic Characteristics in Elastic Optical Network Nodes

Głąbowski,

Sobieraj

2023

JTIT

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“…If we know the structure of switching networks used in elastic optical networks and the number of FSUs required by particular traffic streams, then we are prepared for the analysis of optical switching networks. If we additionally assume that FSU in optical switching networks can be treated such as the Allocation Unit in electronic switching networks [8,9], then in the modeling of optical switching networks, we can use the methods elaborated for multi-service switching networks [10].…”

Section: Elastic Optical Networkmentioning

confidence: 99%

Modelling and Optimization of Multi-Service Optical Switching Networks with Threshold Management Mechanisms

2021

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DWDM networks make use of optical switching networks that allow light waves of multiple lengths to be serviced and provide the possibility of converting them appropriately. Research work on optical switching networks focuses on two main areas of interest: new non-blocking structures for optical switching networks and finding traffic characteristics of switching networks of the structures that are already well known. In practical design of switching nodes in optical networks, in many cases, the Clos switching networks are successfully used. Clos switching networks are also used in Elastic Optical Networks that can effectively manage allocation of resources to individual multi-service traffic streams. The research outcomes presented in this article deal with the problems of finding traffic characteristics in blocking optical switching networks with known structures. This article aims at presenting an analysis of the influence of traffic management threshold mechanisms on the traffic characteristics of multi-service blocking Clos switching networks that are used in the nodes of elastic optical networks as well as their influence on the traffic efficiency of network nodes. The analysis was carried out on the basis of research studies performed in a specially dedicated purpose-made simulation environment. The article presents a description of the simulation environment used in the experiments. The study was focused on the influence of the threshold mechanism, which is one of the most commonly used and elastic traffic management mechanisms, and on the traffic characteristics of switching networks that service different mixtures of multi-service Erlang, Engset and Pascal traffic streams. The conducted study validates the operational effectiveness and practicality of the application of the threshold mechanism to model traffic characteristics of nodes in an elastic optical network.

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Modelling of single-sided multiservice switching structures

Cited by 2 publications

References 38 publications

Advanced Considerations Concerning Impact of Applied Call Admission Control Mechanisms on Traffic Characteristics in Elastic Optical Network Nodes

Advanced Considerations Concerning Impact of Applied Call Admission Control Mechanisms on Traffic Characteristics in Elastic Optical Network Nodes

Modelling and Optimization of Multi-Service Optical Switching Networks with Threshold Management Mechanisms

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