A framework for fiber delay‐line buffers in packet‐based asynchronous multifiber optical networks (PAMFONET)

Zhang, Tao

doi:10.1002/dac.1261

Cited by 13 publications

(6 citation statements)

References 26 publications

(36 reference statements)

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“…Shared buffer and dedicated buffer exist a trade‐off between them in terms of cost and complexity implementation, which motivates us to do the following comparison. Zhang proposed a working framework for optical buffers in a packet‐based optical network, which is divided into two main types: shared and dedicated buffer architectures. Tafani et al presented a cost minimization framework for OBS network with shared‐per‐node optical buffers.…”

Section: Simulation Resultsmentioning

confidence: 99%

A burst loss probability model with impatient customer feature for optical burst switching networks

Lee

Hwang

2014

Int J Communication

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SummaryWe consider optical delay line buffer as a solution to reduce the number of lost burst in optical burst switching, one of the promising candidates for future networks. Such network takes burst loss as an important performance criteria in the design step. Network performance, however, cannot be captured efficiently using traditional queueing models, because they often ignore the impatience of messages traveling through optical switches which is one of the popular issues in communication networks. In this paper, we develop an analytic model for this system using queueing theory and considering special impatience features. Simulation results show that (i) the developed model with impatience features can decrease burst loss probability ( ≃ 10%) compared with other approaches, and (ii) applying that model, we demonstrate that shared buffer architecture in optical burst switching network with optical buffer often achieves lower burst loss probability than dedicated buffer way in several different scenarios. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Simulation Resultsmentioning

confidence: 99%

A burst loss probability model with impatient customer feature for optical burst switching networks

Lee

Hwang

2014

Int J Communication

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“…1) has an optical buffer in which N + 1 FDLs are available to schedule incoming packets corresponding to the architecture in [4] named "dedicated FDL buffers per fiber". The lengths of the FDLs are consecutive multiples of a basic value D called the granularity.…”

Section: A Assumptionsmentioning

confidence: 99%

Scheduling in optical switching: Deploying shared wavelength converters more effectively

Hautegem

Rogiest

Bruneel

2014

2014 IEEE International Conference on Communications (ICC)

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As internet traffic will further increase in coming years, the current network infrastructure will have to grow along in terms of capacity. To this end, optical packet/burst switching have been proposed, allowing more efficient use of the available fiber capacity. To resolve packet contention in the involved optical switches, Fiber Delay Lines (for delay assignment) and wavelength converters (for wavelength conversion) are used to reschedule the contending packets, by means of a scheduling algorithm. Existing algorithms are effective when employed with an infinite number of converters, but generally perform poorly when the number of wavelength converters is small, as is the case in most switch prototype architectures. In this paper, several parametric cost-based scheduling algorithms are proposed that take scarcity of both FDLs and converters into account. Results obtained by Monte Carlo simulation show that these algorithms not only enable improved performance (in terms of packet loss probability), but also reduce the usage of the wavelength converters, and thus, the switch's overall energy consumption.

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“…Because of the lack of mature optical memory, contention reduces OBS performance remark- ably. To enhance the performance of OBS and make it more competitive, many methods have been proposed such fiber delay lines [6], deflection routing [7], wavelength conversion [8], and burst segmentation [9], A review of routing strategies as means to reduce contention in OBS can be found in [10]. Furthermore, different OBS architectures have been proposed to improve its performance [11].…”

Section: Introductionmentioning

confidence: 99%

Hybrid offset‐time and burst assembly algorithm (H‐OTBA) for delay sensitive applications over optical burst switching networks

Yayah

Coulibaly

Ismail

et al. 2014

Int J Communication

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SUMMARYOptical burst switching (OBS) is the most favourable switching paradigm for future all-optical networks. Burst assembly is the first process in OBS and it consists of aggregating clients packets into bursts. Assembled bursts wait for an offset time before being transmitted to their intended destinations. Offset time is used to allow burst control packet reserve required resources prior to burst arrival. Burst assembly process and offset-time create extra delay in OBS networks. To make OBS suitable for real time applications, this extra latency needs to be controlled. This paper proposes and evaluates a novel offset time and burst assembly scheme to address this issue. Constant bit rate (CBR) traffic that has stringent end-to-end delay QoS requirements is used in this study. The proposed scheme is called hybrid offset-time and burst assembly algorithm (H-OTBA). The objective of the paper is achieved by controlling maximum burst transfer delay parameters of CBR. The proposed scheme was evaluated via network simulation. Simulation results demonstrate that, H-OTBA has effectively reduced end-to-end delay for CBR traffic compared with current solutions.

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A framework for fiber delay‐line buffers in packet‐based asynchronous multifiber optical networks (PAMFONET)

Cited by 13 publications

References 26 publications

A burst loss probability model with impatient customer feature for optical burst switching networks

A burst loss probability model with impatient customer feature for optical burst switching networks

Scheduling in optical switching: Deploying shared wavelength converters more effectively

Hybrid offset‐time and burst assembly algorithm (H‐OTBA) for delay sensitive applications over optical burst switching networks

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