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ABSTRACT: Optical burst transport networks employ burst transmission in WDM ring architectures and are promising candidates for MANs. We investigate QoS differentiation in OBT, and compare its performance to IEEE 802.17 resilient packet ring (RPR) standard.
Optical Fiber Communication and the National Fiber Optic Engineers Conference, 2007. OFC/NFOEC 2007. Conference on; 04/2007
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ABSTRACT: We propose a sublambda traffic-grooming scheme on wavelength-division-multiplexing ring networks, named optical burst transport. The network protocol and architecture are designed to support dynamic bandwidth allocation, which is more reasonable for bursty data traffic. To verify our network protocol and architecture, we build a testbed which supports burst-mode transmission. Also, we transmit streaming video over Ethernet as an application
Journal of Lightwave Technology 02/2007; · 2.78 Impact Factor
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ABSTRACT: Optical Burst Transport network is a novel WDM ring architecture for Metropolitan Area Networks (MAN). It leverages the advantages of optical burst switching and WDM rings, while using a token-based medium access scheme. In this paper, we investigate protection together with spatial reuse property. Specifically we show how protection in OBT can be different from conventional protection and propose three algorithms for implementing a fast and low implementation cost, unidirectional 1:1 protection scheme. We analyzed the performance of these schemes via simulation and found an optimum algorithm for minimizing data loss and maximizing data delivery during the fault.
Broadband Communications, Networks and Systems, 2006. BROADNETS 2006. 3rd International Conference on; 11/2006
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ABSTRACT: Optical burst transport (OBT), a novel WDM ring network, is a promising contender for the new metropolitan area network. In this paper, we investigate the spatial reuse property of the OBT, which is able to significantly improve the network performance.
Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. OFC 2006; 04/2006
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ABSTRACT: A sublambda traffic-grooming scheme on wavelength-division-multiplexed (WDM) rings, which is called optical burst transport (OBT), is proposed. The network protocol and architecture allow increased flexibility to tailor the transport network behavior for efficient delivery of bursty data traffic. Using different network parameters, its performance is analyzed via simulation, and the implementation issues including the media-access-control (MAC) protocol, tunable-filter controller, and burst-mode receiver are addressed. Finally, the feasibility of the OBT with an experimental testbed built by the authors is demonstrated and a streaming-video application is used to present its overall functionality.
Journal of Lightwave Technology 02/2006; 24(1):44- 53. · 2.78 Impact Factor
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ABSTRACT: For WDM rings, we propose a sub-lambda traffic grooming scheme, which we term optical burst transport (OBT). To demonstrate its scalability and performance, we investigate the operational issues, and discuss an OBT prototype implementation.
Optical Fiber Communication Conference, 2005. Technical Digest. OFC/NFOEC; 04/2005
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ABSTRACT: Applications that require periodic optical connectivity may be serviced by scheduled lightpaths. Many applications have flexibility about when exactly the scheduled lightpaths should occur. Lightpath service providers can exploit the flexibility to schedule the connections to better utilization of resources, and presumably lower prices for clients. To find the relationship between network resources and time flexibility, a simple WDM link and a leaky bucket traffic model are considered. The network resources, and in particular the required number of wavelengths W, is shown to be a function of the traffic parameters and the time flexibility. For random traffic, simulations are used to measure the sensitivity of W with time flexibility.
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ABSTRACT: Applications that require periodic optical connectivity may be serviced by scheduled lightpaths. Many applications are flexible about when exactly the scheduled lightpaths should occur. Lightpath service providers can exploit this flexibility to schedule connections for better utilization of resources, and presumably lower prices for clients. To find the relationship between network resources and time flexibility, a simple WDM link and a leaky bucket traffic model are considered. The network resources, and in particular the required number of wavelengths W, are shown to be a function of the traffic parameters and the time flexibility. For random traffic, simulations are used to measure the sensitivity of W with time flexibility.
Optical Switching and Networking.
