Results 151 to 160 of about 85,755 (194)

Reservation on Traffic Prediction in OBS Networks

IEICE Transactions on Communications, 2005
Based on traffic prediction, a new reservation method is proposed to reduce delay and void filling ratio at edge node of optical burst switching networks. Simulation studies show that our method achieves an important improvement and has a dynamic optimum weight value in a certain offset time.
Zhicheng Sui, Qingji Zeng, Shilin Xiao
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Dimensioning of combined OBS/OCS networks

2008 5th International Conference on Broadband Communications, Networks and Systems, 2008
To cope with ever-increasing traffic demands in transport networks, all-optical switching is currently perceived as a potential solution to remove bottlenecks caused by optoelectronic conversions. An effective realization of this concept must support a wide range of traffic patterns, while remaining feasible to construct and deploy both in an ...
Marc De Leenheer, Chris Develder, Jens Buysse, Bart Dhoedt, Piet Demeester   +4 more
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Proportional QoS over OBS networks

GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270), 2002
Optical burst switching (OBS) is considered as an efficient switching technique for building the next generation optical Internet. An offset-time based scheme has recently been proposed in order to provide quality-of-service (QoS) in OBS networks. Unfortunately, the proposed service differentiation has several problems.
Yang Chen, Mounir Hamdi, Danny H. K. Tsang   +2 more
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Control-Plane Congestion in OBS Networks

2006 3rd International Conference on Broadband Communications, Networks and Systems, 2006
In this study, we examine control-plane throughput in optical burst switching (OBS) networks with electronic header processing. In a large-scale OBS network, headers arrive to the burst scheduler at a very high rate. This can potentially cause overloading of the core-node control-processor and lead to data loss if headers are not processed in a timely ...
Neil Barakat, Thomas E. Darcie
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Wavelength conversion architectures in OBS networks

NOMS 2008 - 2008 IEEE Network Operations and Management Symposium, 2008
Most studies about Optical Burst Switched (OBS) networks have assumed availability of full wavelength conversion throughout the network. In an optical network with full wavelength conversion capability, every output on each node is provided with a wavelength converter, resulting in the lowest bound for blocking probability.
José Maranhão Neto, Helio Waldman, André Soares 0001, William Giozza   +3 more
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Analysis of OBS Networks With Limited Wavelength Conversion

IEEE/ACM Transactions on Networking, 2006
Presented herein is a scalable framework for estimating path blocking probabilities in optical burst switched (OBS) networks where limited wavelength conversion is possible. Although presented under the guise of OBS, it is pertinent to a broader class of optical networks based on the principle of bufferless unacknowledged switching.
Rosberg, Zvi, Zalesky, Andrew, Vu, Hai Le, Zukerman, Moshe   +3 more
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Virtual Topology Design for OBS Optical Networks

2007 IEEE International Conference on Communications, 2007
Burst loss and delay are two main issues in optical burst switching (OBS) networks. In OBS, if the hop-count between the source-destination node pair can be reduced, both the control packet and the corresponding data burst will suffer less risk of contention, and the delay caused by offset time will be reduced as well.
Wu, B, Yeung, KL
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Maximizing TCP throughput in OBS networks

2012 International Conference on Communications and Information Technology (ICCIT), 2012
A key goal of designing memoryless OBS networks is the minimization of burst loss. Loss is due mainly to restraints that can occur at core nodes, such as contention. Such events occurring at OBS layer are misinterpreted by TCP congestion control mechanisms that reacts on (i) burst drops, (ii) end-to-end delay variation and (iii) throughput changes ...
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An Optimal Batch Scheduling Algorithm for OBS Networks

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference, 2009
This paper introduces an optimal batch scheduling algorithm for the scheduling of batches of bursts in optical burst switching networks. The algorithm, called BATCHOPT, considers both the requests being processed in the current batch and the requests previously scheduled in the search for an optimal solution.
Gustavo B. Figueiredo, Eduardo C. Xavier, Nelson L. S. da Fonseca   +2 more
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Channel reusability for burst scheduling in OBS networks

Photonic Network Communications, 2013
This paper presents a novel channel scheduling policy for optical burst switching networks called least reusable channel (LRC). LRC decides to which interval of the output channel (void) an incoming burst should be allocated on the basis of reuse of the remaining voids. LRC dynamically uses information available to make allocation decisions.
Gustavo B. Figueiredo, Nelson L. S. da Fonseca   +1 more
openaire   +1 more source