Packet Filling Optimization in Multiservice Slotted Optical Packet Switching MAN Networks

Eido, Thaere; Nguyen, Dung Tuan; Atmaca, Tülin

doi:10.1109/aict.2008.63

Cited by 12 publications

(8 citation statements)

References 9 publications

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“…This concept is shown in Figure 2. The idea of the VSC scheme comes from the results that we have obtained while analyzing a slotted synchronous network [5]. We have observed that the bandwidth fragmentation does not cause any waste of transmission resources in the slotted synchronous architecture.…”

Section: Description Of the Studied Architecturementioning

confidence: 97%

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Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Nguyen¹,

Eido²,

Atmaca³

2009

2009 Fifth Advanced International Conference on Telecommunications

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Optical Packet Switched (OPS) ring Metropolitan Area Networks (MAN) are among the most promising solutions for Next Generation MAN architectures. However, a particular phenomenon is observed in optical ring networks with random access to the transmission medium, such as in asynchronous Optical Unslotted Carrier Sense Multiple Access with Collision Avoidance (OU-CSMA/CA). Due to the random moments of packet transmissions, the amount of bandwidth which is available for use, on each wavelength, becomes divided into many small pieces. This problem, also called bandwidth fragmentation, causes a waste of some transmission resources. In fact, free spaces which are smaller then the optical packet size are out of use for traffic insertion. The bandwidth fragmentation is reduced in synchronous networks, thanks to the better use of the transmission resources provided by these networks [6]. This paper describes an access scheme that is proposed to improve the performance of the original OU-CSMA/CA applied to an asynchronous optical ring network. We propose a "virtual synchronization" mechanism (VSC), which improves significantly the bandwidth utilization while being very simple to implement. We provide simulation works in order to validate the efficiency of the proposed mechanism. Numerical results show the improvement of performance provided by the VSC mechanism, compared to the original CSMA/CA protocol.

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Section: Description Of the Studied Architecturementioning

confidence: 97%

“…This phenomenon is eliminated in slotted synchronous networks [5]. In fact, when the network is slotted, the transmission medium is divided into slots of equal duration each of which can accommodate exactly one optical packet (optical packets are hence of fixed size) [6].…”

Section: Introductionmentioning

confidence: 99%

Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Nguyen¹,

Eido²,

Atmaca³

2009

2009 Fifth Advanced International Conference on Telecommunications

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“…This case allows validation of the formulas used for the resolution of our model. Case 3 "Network Simulator": We simulate the original network, with IPP arrivals and the Timer-based fixed size packet creation mechanism [7]. This case provides validation for the Poisson arrival assumption.…”

Section: B Model Validationmentioning

confidence: 99%

“…Client electronic packets are aggregated and assembled into fixed-size optical packets 2 . The process of optical packet creation is explored with more details in [7]. The studied network supports a number of C Classes of Service (CoS).…”

Section: A Access Node Design and The Ccm Mechanismmentioning

confidence: 99%

Multiservice Optical Packet Switched Networks: Modeling, Performance Evaluation and QoS Mechanisms in a Mesh Slotted Architecture

Eido

Pekergin

Marot

et al. 2009

2009 Fifth International Conference on Networking and Services

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Optical Packet Switching (OPS) technologies are among the most promising solutions for Next Generation Network architectures. Resource contention resolution and Quality of Service (QoS) management mechanisms have been developed in order to remedy the lack of optical buffering and implement multi-service support in OPS networks. In this paper we propose an analytical model for the access and core nodes of a multi-service mesh network architecture which operates in a synchronous slotted transmission mode. The proposed model captures the effect of the client traffic matrix and considers a priority-based multi-service support. Moreover, we elaborate two resource management mechanisms: Cumulative Credits Mechanism (CCM) and Distributed Deflection Routing (DDR). The former solves inter-class fairness issues at the access nodes and the latter optimizes the resource contention resolution in the core of the network. We use our analytical model to show the interest of the developed mechanisms. The results obtained by the proposed model are validated and analyzed through several simulation scenarios.

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“…For this, Telecom SudParis, an ECOFRAME project partner [4,7], simulated a network with both variable and fixed duration packets, as shown in Figure 13. The objective of these calculations was to evaluate the mean access delay of the resource, i.e., the time required to have a free slot on the transit path at each node.…”

Section: Fixed Packet Versus Variable Packetsmentioning

confidence: 99%

Packet OADMs for the next generation of ring networks

Chiaroni¹,

Santamaria²,

Simonneau³

et al. 2010

Bell Labs Tech. J.

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The deployment of fiber-to-the-home (FTTH) provide more flexibility [5,6] to optical connections and to adapt optical networks to bursty data traffic.In this paper we describe a solution that offers packet granularity in the optical domain at the convergence of ROADM and Ethernet technologies. While the approach is driven by new optical technology, the design must consider the performance of the entire network. We begin the paper with a description of the network specifications, and after a description of the network elements we address the optical technologies that are required. We then describe key results that demonstrate the feasibility of such a network and discuss the actions required to introduce this technology to the marketplace. Finally, we describe the control plane with some performance metrics.

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Packet Filling Optimization in Multiservice Slotted Optical Packet Switching MAN Networks

Cited by 12 publications

References 9 publications

Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Multiservice Optical Packet Switched Networks: Modeling, Performance Evaluation and QoS Mechanisms in a Mesh Slotted Architecture

Packet OADMs for the next generation of ring networks

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