An Accurate Model for Evaluating Blocking Probabilities in Multi-Class OBS Systems

Barakat, N.; Sargent, Edward H.

doi:10.1109/lcomm.2004.823392

Cited by 17 publications

(17 citation statements)

References 6 publications

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“…An exact model for computing blocking probability for multi-class systems is presented for single wavelength in [29]. The authors extend their work for multichannel systems in [30].…”

Section: Exact Modelingmentioning

confidence: 88%

Joint Path and Resource Selection for OBS Grids with Adaptive Offset Based QoS Mechanism

Koseoglu¹,

Karasan²

2007

Proceedings of the 1st International ICST Conference on Networks for Grid Applications

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“…An exact model for computing blocking probability for multi-class systems is presented for single wavelength in [29]. The authors extend their work for multichannel systems in [30].…”

Section: Exact Modelingmentioning

confidence: 88%

Joint Path and Resource Selection for OBS Grids with Adaptive Offset Based QoS Mechanism

Koseoglu¹,

Karasan²

2007

Proceedings of the 1st International ICST Conference on Networks for Grid Applications

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“…Firstly, in all JET OBS systems, bursts with longer offsets will tend to have higher priority and will generally experience less blocking than bursts with shorter offsets [16], [17]. [18].…”

Section: Increased Fairnessmentioning

confidence: 99%

Dual-header optical burst switching: a new architecture for WDM burst-switched networks

Barakat¹,

Sargent²

Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies.

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Absfract-In this paper we introduce a new signalling architecture called Dual-header Optical Burst Switching (DOBS) for next generation burst-switching optical networks. Using DOBS, the functional offset size of eveq burst on a given link can he set to the same size without the use of fiber delay Line buffers.This al1ows DOBS to realize lower burst-scheduling complehity, lower ingress delay, higher throughput and better fairness than conventional single-header OBS systems. We present a new burst5cheduling algorithm called FreeChannel Queue scheduling that requires only O(1) time to execute and that achieves optimal performance in constant-offset DOBS systems. Using simulation, we find that the blocking probability of a 16-channel DOBS system is 50% lower than that of a similar LAW-VF JET OBS system. We also show that DOBS achieves better fairness than JET OBS with respect to burst length and with respect to the residual path length of bursts.

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“…Usually, research interests of the performance of an OBS network are mainly focused on the blocking probability, such as in [14][15][16][17] and the references therein. In [18] and [19], the authors deal with the blocking time distribution of the OBS networks in their literatures.…”

Section: Related Work and Motivationmentioning

confidence: 99%

On blocking time in multi‐class optical burst switching nodes

Tang

Tan

Chan

2016

Int J Communication

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SUMMARYRecently, there has been an increasing research interest being directed to optical burst switching (OBS) networks because of its mature electronic processing capability and high-capacity optical transport capability. The blocking time for an OBS node, representing the time duration in which a certain channel is occupied by some class of bursts, plays an important role in characterizing the performance of an OBS network. In this paper, we analyze this important metric for an OBS node with a horizonal and a single channel theoretically and numerically. On the basis of that, the burst arrivals are assumed to follow the Poisson process and the burst lengths have a phase-type distribution, we are able to formulate a working mechanism of an OBS node into a multilayer stochastic fluid model. Using a level crossing arguments method, we are able to obtain the Laplace-Stieltjes transforms of the blocking time, from which n-order moments and the probability density functions of the blocking time can be further derived. We provide a numerical example to illustrate the theoretical analyses, and we further discuss the effects of the offset time and the arrival density on the blocking time through this numerical example.

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An Accurate Model for Evaluating Blocking Probabilities in Multi-Class OBS Systems

Cited by 17 publications

References 6 publications

Joint Path and Resource Selection for OBS Grids with Adaptive Offset Based QoS Mechanism

Joint Path and Resource Selection for OBS Grids with Adaptive Offset Based QoS Mechanism

Dual-header optical burst switching: a new architecture for WDM burst-switched networks

On blocking time in multi‐class optical burst switching nodes

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