A Detailed Analysis and Performance Comparison of Wavelength Reservation Schemes for Optical Burst Switched Networks?

Teng, Jing; Rouskas, George N.

doi:10.1007/s11107-004-6435-0

Cited by 66 publications

(75 citation statements)

References 17 publications

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“…Before sending a burst, a signaling message is sent through a control channel along the path in order to perform the resource reservation and setup the switching ports on each node. Some strategies for reservation, such as Justin-Time (JIT), Horizon and Just-enough-Time (JET) were proposed, with their advantages and disadvantages concerning computational complexity and idle times discussed in [30]. In all signaling methods for OBS, resource reservation needs an offset time (t offset ), calculated as the minimum amount of time to provide all the resources reserved at destination node.…”

Section: Optical Burst Switchingmentioning

confidence: 99%

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Modeling an Optical Network Operating with Hybrid-Switching Paradigms

Bonani

2016

J. Microw. Optoelectron. Electromagn. Appl.

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Section: Optical Burst Switchingmentioning

confidence: 99%

“…Fig. 3 shows the signaling steps for JIT mechanism, which is adopted in the present work and carefully described in [30].…”

Section: Optical Burst Switchingmentioning

confidence: 99%

Modeling an Optical Network Operating with Hybrid-Switching Paradigms

Bonani

2016

J. Microw. Optoelectron. Electromagn. Appl.

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“…Our study is based on the standard OBS model defined in [13]. The traffic is injected at edges node, connected to core nodes.…”

Section: Adaptive Connection Control Schemementioning

confidence: 99%

“…IDs can be obtained during the aggregation process, by hashing the payload, or simply by combining their source and destination node indexes with a time stamp. The proposed scheme can be used with conventional scheduling algorithms as the FirstFit Void Filling (FFVF) and the Last Available Unscheduled Channel (LAUC) [13] and with both conventional (C-OBS) and offset time-emulated (E-OBS) OBS approaches [14]. We assume no buffering capabilities are available at core nodes.…”

Section: Adaptive Connection Control Schemementioning

confidence: 99%

Adaptive burst admission and forwarding in OBS networks

Rumley

Pedrola

Klinkowski

et al. 2009

2009 11th International Conference on Transparent Optical Networks

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This paper addresses the problem of controlling the performance of optical burst switching (OBS) networks in presence of non-stationary traffic demands. We propose a joint burst admission control and forwarding mechanism that operates in core nodes. This mechanism dynamically adapts its behaviour according to the feedback messages received from other nodes. By not forwarding certain bursts not complying with given requirements, an admission control is implicitly made. Moreover, by forwarding bursts to appropriately selected nodes, traffic balancing is achieved. The advantageous effects of the proposed mechanism can additionally be amplified by granting extra offset time to the burst. The benefits provided by this mechanism are supported by numerical results. Keywords: optical burst switching, adaptive routing, deflection routing, performance analysis. INTRODUCTIONModern communication networks are intended to deal with highly varying traffic conditions. The demands they have to carry out often imply traffic intensities varying both in the short and long term. Since the data traffic is generally statistically multiplexed, the networks that are subject to the varying traffic conditions are always susceptible to congestion states, in particular, to transient congestion due to short term traffic fluctuations, and to semi-permanent congestion due to long term traffic variation. Several approaches have been considered in order to diminish the network congestion under varying traffic demands. One consists in delaying temporarily the data traffic by means of buffering, which allows postponing the transmission until the outgoing link is available. This approach is effective for solving transient congestions but not for semi-permanent ones. It is also possible, when applying proper routing, to take advantage of the whole network capacity rather than only the one available on a specific path. Thus, by distributing intelligently the traffic over the network, permanent congestion can be avoided. Transient congestions can also be alleviated if alternative (or deflection) paths toward destination are explored. Eventually, in critical cases, a Connection Admission Control (CAC) mechanism can limit the amount of traffic entering or travelling through the network. In this way, the traffic supposed to cause congestion anyway is dropped, prior to consume network resources.On the other hand, high-capacity communication networks make an extensive use of photonic technologies. Primarily reserved to point-to-point transmission, fibre optics progressively acquired new functionalities such as switching and routing. With the advent of Wavelength Dimension Multiplexing (WDM) and optical crossconnects (OXC), Optical Circuit Switched (OCS) networks have been deployed, with nodes able to route transparently an optical signal (lightpath) to the next hop. Moreover, two upcoming technologies, Optical Packet Switching (OPS) and Optical Burst Switching (OBS) have been proposed to achieve statistical multiplexing directly at the optical leve...

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“…In literature, these principal burst scheduling schemes have been extensively analyzed regarding performance and realization complexity [Gau00, DGSB01,TR05]. The following paragraphs summarize and relate key findings on burst scheduling.…”

Section: The Temporal Scope Of Burst Schedulingmentioning

confidence: 99%

Novel Network Architecture for Optical Burst Transport

Gauger

2009

Kommunikation in Verteilten Systemen (KiVS)

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SummaryTransport networks form the backbone of communication networks by cost-efficiently offering huge bandwidth and by guaranteeing a high service quality and availability. These requirements can best be met by using optical communication technologies. Currently, wavelength-switching is the most prominent network technology employing optical fiber communication and wavelength division multiplexing. It transports data in circuit-switched wavelength channels, the so-called lightpaths. While for years progress in optical networks has been defined by ever increasing transmission bit-rates, higher flexibility and manageability as well as multi-service and multi-layer integration are equally important criteria today. Accounting for these trends, optical burst switching (OBS) has been proposed as a highly dynamic optical network architecture. It offers fine-granular transport of different packet-switched services and applies statistical multiplexing directly in the optical layer.This thesis presents the design, modeling, and evaluation of the optical burst transport network architecture (OBTN). The architecture is motivated by the need for flexible, scalable, and cost-efficient transport in next generation networks. In addition, it is stimulated by the research activities towards highly dynamic optical network infrastructures.OBTN defines a network architecture to transport and switch optical burst data in a core network. The design objectives for the OBTN architecture are (i) an overall high quality of service, (ii) a network design allowing for cost-efficiency and scalability, and (iii) a network evolution perspective based on the current wavelength-switched networks. These objectives are achieved by combining selected concepts, architectures, and strategies of optical burst and optical packet switching as well as of multi-layer traffic engineering.In order to provide the background information for the design of OBTN, Chapter 2 introduces the general characteristics, requirements, and trends for next generation transport networks. Also, it discusses the concept of layering in next generation networks and its application in layer networks for the virtualization of transport resources. Consequently, virtual topology design and dimensioning are analyzed to quantify the trade-offs regarding connectivity and resource requirements. Chapter 2 also reviews the fundamental technologies as well as currently emerging data and control plane architectures for optical transport networks. This presentation is then extended towards a long-term perspective. It describes architectural constraints and classification criteria for highly dynamic optical network architectures. These criteria are used to characterize the fast optical circuit switching, optical burst switching, and optical packet switching architectures. Then, hybrid optical network architectures are discussed as a framework to combine wavelength-switched and optical burst/packet-switched networks.i ii Summary Chapter 3 discusses the state of research and technology for o...

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A Detailed Analysis and Performance Comparison of Wavelength Reservation Schemes for Optical Burst Switched Networks?

Cited by 66 publications

References 17 publications

Modeling an Optical Network Operating with Hybrid-Switching Paradigms

Modeling an Optical Network Operating with Hybrid-Switching Paradigms

Adaptive burst admission and forwarding in OBS networks

Novel Network Architecture for Optical Burst Transport

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