Hybrid hierarchical optical networks

Izmailov, Rauf; Ganguly, Samrat; Wang, Ting; Suemura, Y.; Maeno, Yoshiharu; Araki, Satoshi

doi:10.1109/mcom.2002.1046999

Cited by 53 publications

(21 citation statements)

References 20 publications

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“…Routing and wavelength assignment algorithms were extensively studied in the general context of optical networking ( [1] and its references). The organization of wavelengths into wavebands can be further improved by using non-uniform wavebands (containing different number of wavelengths), as proposed in [8], [9]. Non-uniform wavebands provide more flexibility for wavelength aggregation, which can be used for more efficient switching and routing mechanisms [10].…”

Section: Introductionmentioning

confidence: 99%

Nonuniform waveband hierarchy in hybrid optical networks

Izmailov¹,

Ganguly²,

Kleptsyn³

et al. 2003

IEEE INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37

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Abstract-Aggregation of individual wavelengths into wavebands for their subsequent switching and routing as a single group is an attractive way for scalable and cost-efficient optical networks. We analyze the implications of this waveband hierarchy for a single optical node by analyzing two issues: the proper selection of waveband sizes and the assignment of wavebands for a limited set of input-output patterns of traffic. We formulate a general model and propose optimal algorithmic solutions for both problems. The performance of resulting sets of non-uniform wavebands is studied for several representative cases (a single node, an optical ring network, an optical mesh network). The results demonstrate improved optical throughput and reduced cost of switching and routing when using non-uniform waveband hierarchy.

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Section: Introductionmentioning

confidence: 99%

Nonuniform waveband hierarchy in hybrid optical networks

Izmailov¹,

Ganguly²,

Kleptsyn³

et al. 2003

IEEE INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37

Self Cite

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“…Examples of this type of hybrid switching include optical burst switching (OBS) over optical circuit switching (OCS), and electronic packet switching over OCS. Izmailov et al [4] showed that by applying both type of cross-connection, e.g., O-E-O and all-optical, significant capital expenditure reduction might be realized. The energy consumption and footprint of the network devices may also be reduced considerably with hybrid structures.…”

Section: Hybrid Circuit/packet Switching-a Reviewmentioning

confidence: 99%

Seamlessly transformable hybrid packet and circuit switching for eff icient optical networks

Sun

2013

中国光学快报

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Efforts in realizing all-optical packet switching are overwhelming in the past decade. While optical packet switching remains an attractive switching paradigm in the long run, technical challenges prohibit it from becoming a practical solution for the ever-growing bandwidth hunger during the next few years. Finding a technically viable way to meet the increasing capacity requirement with good scalability and flexibility becomes a clear pursue for the community. Hybrid packet and circuit switching is considered to be one promising technique in realizing high performance switching at low cost and less energy consumption, by taking the advantage of both packet switching and circuit switching. In this paper, we review existing work in hybrid optical packet and circuit switching. We discuss the key technical challenges in realizing hybrid optical packet and circuit switching. We further introduce our ongoing efforts in building a seamlessly transformable packet/circuit-switching node with hybrid optical and electronic components. We show that in a hybrid node, the scheduling complexity with typical scheduling algorithms may be reduced to half of a node running in full packet switching mode.

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“…Although a significant amount of open research for developing both MG-OXC architectures and approaches for the design and planning of multi-granular optical transport networks has been carried out in [1][2][3]7,8,11,14,[18][19][20][21][22][23][24], many unexplored issues still need to be addressed and investigated. Table 1 summarizes the related work by comparing the studies based on various issues considered in the design and planning problem.…”

Section: Introductionmentioning

confidence: 99%

Towards the realistic planning of GMPLS-based optical transport networks

Naas

Mouftah

2010

Photon Netw Commun

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The multi-granular switching concept defined in Generalized Multiprotocol Label Switching (GMPLS) is expected to be a future-proof solution for mitigating the Optical Crossconnet scalability problems associated with the skyrocketing growth of traffic in optical transport networks. In this paper, we address the problem of planning the GMPLSbased (or multi-granular) transport network with color (or label) conversion and signal regeneration capabilities. The objective of the problem is to minimize the total weighted port count in the transport network. The novelty of this problem lies in the incorporation of the following for the first time: (1) considering all traffic granularities defined in GMPLS; (2) allowing wavelength, waveband, and fiber conversions; (3) considering the optical-reach limitation of optical signals; and (4) customizing the optical reach of alloptical paths. Due to the computational complexity of the problem, we propose various efficient heuristics that are capable of solving large-sized problems in a reasonable amount of time. In order to achieve the best possible solution to the planning problem, a comprehensive evaluation of different heuristic variations through illustrative examples and simulations is conducted. The results also provide valuable insights into many issues that can contribute to further research and development in this area.

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Hybrid hierarchical optical networks

Cited by 53 publications

References 20 publications

Nonuniform waveband hierarchy in hybrid optical networks

Nonuniform waveband hierarchy in hybrid optical networks

Seamlessly transformable hybrid packet and circuit switching for eff icient optical networks

Towards the realistic planning of GMPLS-based optical transport networks

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