Results 261 to 270 of about 35,239 (296)
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Optical Hybrid Switching – Combined Optical Burst Switching and Optical Circuit Switching
2004In this paper, we propose a new optical hybrid switching technique which combined Optical Burst Switching (OBS) and Optical Circuit Switching (OCS) using flow classification. In particular, this switching technique classifies incoming IP traffic flows into short-lived and long-lived flows for Quality of Service (QoS) provisioning according to traffic ...
Lee, G.M. +4 more
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2008
Switching in core optical networks is currently being performed using high-speed electronic or all-optical circuit switches. Switching with high-speed electronics requires optical-to-electronic (O/E) conversion of the data stream, making the switch a potential bottleneck of the network: any effort (including parallelization) for electronics to approach
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Switching in core optical networks is currently being performed using high-speed electronic or all-optical circuit switches. Switching with high-speed electronics requires optical-to-electronic (O/E) conversion of the data stream, making the switch a potential bottleneck of the network: any effort (including parallelization) for electronics to approach
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Robust optical burst switching
11th International Telecommunications Network Strategy and Planning Symposium. NETWORKS 2004,, 2004Contention is inherent to optical burst switching; this may lead to some burst loss, which could be fatal for some kind of applications. In This work we propose a combination of contention reduction through congestion control and bursts retransmission to eliminate completely bursts loss. The simulation results indicate that this scheme can transform an
A. Maach, Gv. Bochmann, H. Mouftah
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Buffering-deflection tradeoffs in optical burst switching
Photonic Network Communications, 2010A very important issue in optical burst switching (OBS) networks is the excessive burst drop when no suitable network resources are found during path reservation. In this study, a network scenario is evaluated in which AWG-based optical nodes are used as burst router nodes within the optical network.
BREGNI, STEFANO +2 more
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On the departure process of burst aggregation algorithms in optical burst switching
Computer Networks, 2009We characterize analytically the departure process from the following three burst aggregation algorithms: the time based aggregation algorithm, the burst-length based aggregation algorithm and the time and burst-length based aggregation algorithm.
Xenia Mountrouidou, Harry G. Perros
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Periodically scheduled burst flows in optical burst switching networks
International Journal of Communication Networks and Distributed Systems, 2007Providing flexible quality of service (QoS) for multiple classes of traffic is one of the important challenges in the design of optical burst switching (OBS) networks. In this paper, we propose a novel bandwidth reservation scheme for periodically scheduled bursts.
null Li Lei, Srinivas Sampalli
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On-Line Burst Header Scheduling in Optical Burst Switching Networks
22nd International Conference on Advanced Information Networking and Applications (aina 2008), 2008Optical burst switching (OBS) is a promising solution for allowing various-size data burst to be transported optically over dense wavelength division multiplexing (DWDM) without O/E/O (optical/electronic/optical) conversion. In OBS, networks, burst headers are sent ahead of the data bursts on a separate control channel to set up optical paths for the ...
Jian (Denny) Lin +2 more
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Trends in optical burst switching
SPIE Proceedings, 2003Optical burst switching (OBS) has been proposed in the late 1990s as a novel photonic network architecture directed towards efficient transport of IP traffic. OBS aims at cost-efficient and dynamic provisioning of sub-wavelength granularity by optimally combining electronics and optics. Optical bursts cut through intermediate nodes, i.e., data stays in
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A unified study of burst assembly in optical burst switching networks
Photonic Network Communications, 2010This article presents a comprehensive study of burst assembly in optical burst switching (OBS) networks. This investigation aims to provide a unified study of burst assembly algorithms. After analyses of conventional assembly algorithms, we present an adaptive burst assembly algorithm: data-length time-lag product assembly algorithm.
Chi Yuan +4 more
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Performance enhancement of optical burst switching using burst segmentation
IEEE International Conference on Communications, 2003. ICC '03., 2004In this paper we provide an analytical framework for studying the performance of Optical Burst Switching (OBS) networks using Burst Segmentation. We first consider a single link model to evaluate the blocking probability of OBS using Burst Segmentation and confirm it by simulation.
Marcel F. Neuts +4 more
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