An intra- and inter-domain routing architecture for optical burst switched (OBS) networks

Baldin, Ilya; Mehrotra, P.; Rouskas, George N.; Bragg, Arnold; Stevenson, Daniel

doi:10.1109/icbn.2005.1589726

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…An analytical model is established in [15] to analyze the burst-blocking probability in OBS networks with no wavelength conversion, focusing on PMD and amplifier related noise (e.g., ASE). The problem of routing optical signals of various types in an OBS network while maintaining optical signal quality is addressed in the context of the Just-In-Time (JIT) signaling protocol in [34]. Another popular signaling protocol in OBS networks is Just-Enough-Time (JET) [35].…”

Section: Related Workmentioning

confidence: 99%

Impairment-aware ordered scheduling in dual-header optical burst switched networks

Fan

Wang

2009

Photon Netw Commun

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Optical burst switching (OBS) is a promising technology for bridging the gap between optical wavelength switching and optical packet switching. Optical signal transmission quality is subject to various types of physical impairment introduced by optical fibers, switching elements, or other network components. The signal degradation due to physical impairment may be significant enough such that the bit-error rate of received signals is unacceptably high at the destination, rendering the signal to not usable. In this article, based on earlier study, we study the burst-scheduling problem in OBS networks using two control packets for each data burst, taking into account physical impairment effects. We propose a burst-scheduling algorithm that accommodates incoming bursts by primary path routing, deflection routing, and burst scheduling. We design an admission control mechanism to use network resources efficiently. At an OBS node, the proposed algorithm schedules bursts for transmission by searching for available resources as well as verifying signal quality. Our simulation results demonstrate that the proposed algorithm is effective in terms of reducing the burst-blocking probability.

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Section: Related Workmentioning

confidence: 99%

Impairment-aware ordered scheduling in dual-header optical burst switched networks

Fan

Wang

2009

Photon Netw Commun

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“…An analytical model is established in [9] to analyze the burst blocking probability in OBS networks with no wavelength conversion, focusing on polarization mode dispersion (PMD) and amplifier related noise (e.g., amplified spontaneous emission (ASE)). The problem of routing optical signals of various types in an OBS network while maintaining optical signal quality is addressed in the context of just-in-time (JIT) signaling protocol in [10]. Another popular signaling protocol in OBS networks is just-enough-time (JET) [11].…”

Section: Introductionmentioning

confidence: 99%

Physical impairment aware scheduling in optical burst switched networks

Fan

Wang

2009

Photon Netw Commun

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Optical burst switching (OBS) presents itself as a promising technology for bridging the gap between optical wavelength switching and optical packet switching. Increasingly, researchers attempt to incorporate more realistic constraints into the design of OBS networks. Optical signal transmission quality is subject to various types of physical impairment introduced by optical fibers, switching equipment, or other network components. The signal degradation due to physical impairments may be significant enough such that the bit-error rate of received signals is unacceptably high at the destination, rendering the signal not usable. In this paper, based on earlier work, we study the burst scheduling problem in OBS networks, taking into account physical impairment effects. We propose three effective burst scheduling algorithms: (1) a JET based Physical Impairment Constrained Algorithm (JETPIC), (2) an Integrated Physical Impairment Constrained Algorithm (IPIC), and (3) an Enhanced Integrated Physical Impairment Constrained Algorithm (EIPIC). At an OBS node, the proposed algorithms schedule bursts for transmission by searching for available resources as well as verifying signal quality. Our simulation results show that the proposed algorithms are effective in terms of reducing the burst blocking probability. In general, algorithm JETPIC outperforms algorithms IPIC and EIPIC in burst blocking probability and average end-to-end delay performance.

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“…This may be a more realistic way of implementing commercial-sector wireless DSA networks. JIT signaling can be coupled with other JIT architectural features (e.g., intra-and inter-domain routing) to effectively manage spectrum in these scenarios [12].…”

Section: B B P Pr Ro Ov VI Is Si Io On Ni In Ng G S Sc Ch He Em Mementioning

confidence: 99%

Dynamic spectrum management - applying optical networking techniques to wireless DSA networks

Baldin

Bragg

Evans

et al.

First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005.

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We describe an enabling technology for spectrum management in wireless dynamic spectrum access (DSA) networks. The technology is based on an open architecture and protocols developed for optical networks, and deployed in an all-optical testbed that supports dynamic wavelength (i.e., optical spectrum) provisioning.We summarize the basic requirements for spectrum management in commercial-sector wireless DSA networks, and briefly describe a candidate architecture vis-à-vis its signaling protocols, message structure, dynamic provisioning features, and performance. The architecture supports signaling times on the order of a microsecond, and can manage applications with spectrum holding times ranging from a few milliseconds to months. I I. . I IN NT TR RO OD DU UC CT TI IO ON NWireless dynamic spectrum access (DSA) networks require: (1) knowledge of available spectrum through wide-band spectrum sensing, policies, etc.[1]; (2) real-time spectrum management -viz., provisioning and release of RF bandwidth; and (3) a network infrastructure and/or endpoints that support these technologies. The focus of this paper is requirement 2.Wireless DSA networks may require "new architectures and associated signaling and control protocols" for their real-time spectrum management component [2]. However, wireless DSA networks, and optical networks that support real-time dynamic provisioning of wavelengths, have very similar spectrum management requirements. Hence, we believe: (1) existing optical control plane architectures and protocols that support real time spectrum management can be adapted to manage wireless spectrum; and (2) methods used to improve the performance of dynamically provisioned optical networks can also be applied to commercial-sector wireless DSA networks.We review basic spectrum management requirements for commercial-sector DSA networks in Section II, briefly describe a candidate control plane architecture, protocols, and performance issues in Sections III and IV, describe usage scenarios in Section V, and our conclusions in Section VI. † Corresponding author: A. Bragg, 919-248-1988, email: abragg@rti.org .

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An intra- and inter-domain routing architecture for optical burst switched (OBS) networks

Cited by 3 publications

References 10 publications

Impairment-aware ordered scheduling in dual-header optical burst switched networks

Impairment-aware ordered scheduling in dual-header optical burst switched networks

Physical impairment aware scheduling in optical burst switched networks

Dynamic spectrum management - applying optical networking techniques to wireless DSA networks

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