Download or read book Design and Analysis of Survivable Wdm Optical Network written by Minjing Mao and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Design and Analysis of Survivable WDM Optical Network" by Minjing, Mao, 毛忞婧, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Optical networks with Wavelength Division Multiplexing (WDM) technology provide huge bandwidth to meet the ever-increasing traffic demand of the next generation Internet. But the high-speed nature of WDM networks also makes the network more vulnerable to failures. Even a single network failure for a very short duration can result in enormous loss of data. In this thesis, we concentrate on designing a survivable WDM network. In essence, survivability concerns two important aspects, fast fault detection and localization, and fast fault recovery. We first study fast fault detection and localization in WDM optical networks. Our work is based on the notion of monitoring cycle (m-cycle). Compared with other fault detection schemes, an m-cycle based fault detection scheme provides fast fault detection and requires less number of expensive monitors. Aiming at further cutting down the implementation cost, we propose the notion of super monitor. Instead of having a dedicated monitor for each m-cycle, a single super monitor can be placed at the junction of a set of overlapped m-cycles. In this thesis, we formulate and solve the monitor placement problem. We then focus on enhancing the capacity efficiency of fast fault recovery schemes. Shared backup path protection (SBPP) schemes can provide 100% protection against any single link failure. This is achieved by establishing a pair of link-disjoint active and backup paths upon each call arrival. The bandwidth on different backup paths can be shared for protecting different calls. In this thesis, a new SBPP scheme is designed based on a two-step routing approach, where the active and backup paths are sequentially optimized with different objectives in mind. We then shift our focus to design fast protection scheme for multicast/broadcast communications. To this end, we refine the existing concept of blue/red tree. Blue/red tree is a pair of spanning trees where the connectivity between the root and any destination node is ensured upon a network failure. In particular, two efficient integer linear programs (ILPs) are formulated for finding the optimal blue/red trees. Last but not the least, we investigate the survivability in IP networks. We notice that existing efforts on IP fast reroute (IPFRR) are effective in enhancing the IP resilience. But the impact of IPFRR on the end-to-end TCP performance is ignored. Notably, path rerouting can interfere with the TCP congestion control mechanism and thus cause severe throughput degradation. To address this problem, we propose a duplicate acknowledgement (ACK) suppression scheme. The key idea is to detect whether an out-of-order packet arrival event is due to IPFRR or not. If it is due to IPFRR, duplicate ACKs triggered will be suppressed by the TCP receiver so as not to cause unnecessary slow down at the TCP sender. DOI: 10.5353/th_b4784968 Subjects: Wavelength division multiplexing Optical communications - Design and construction

Download or read book Design and Analysis of Survivable WDM Optical Network written by Minjing Mao and published by . This book was released on 2012 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Analysis of Survivable WDM Optical Network written by Minjing Mao and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survivable Optical WDM Networks written by Canhui (Sam) Ou and published by Springer Science & Business Media. This book was released on 2010-07-19 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers these key topics: Shared-mesh protection for optical WDM networks. Survivable traffic grooming for hierarchical optical WDM networks. Survivable data over next-generation SONET/SDH with inverse multiplexing.

Download or read book Design and Analysis of Survivable Optical Networks written by Canhui (Sam) Ou and published by . This book was released on 2004 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical WDM Networks written by Devi Chadha and published by John Wiley & Sons. This book was released on 2019-05-08 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive and updated account of WDM optical network systems Optical networking has advanced considerably since 2010. A host of new technologies and applications has brought a significant change in optical networks, migrating it towards an all-optical network. This book places great emphasis on the network concepts, technology, and methodologies that will stand the test of time and also help in understanding and developing advanced optical network systems. The first part of Optical WDM Networks: From Static to Elastic Networks provides a qualitative foundation for what follows—presenting an overview of optical networking, the different network architectures, basic concepts, and a high-level view of the different network structures considered in subsequent chapters. It offers a survey of enabling technologies and the hardware devices in the physical layer, followed by a more detailed picture of the network in the remaining chapters. The next sections give an in-depth study of the three basic network structures: the static broadcast networks, wavelength routed networks, and the electronic/optical logically routed networks, covering the characteristics of the optical networks in the access, metropolitan area, and long-haul reach. It discusses the networking picture; network control and management, impairment management and survivability. The last section of the book covers the upcoming technologies of flex-grid and software defined optical networking. Provides concise, updated, and comprehensive coverage of WDM optical networks Features numerous examples and exercise problems for the student to practice Covers, in detail, important topics, such as, access, local area, metropolitan, wide area all-optical and elastic networks Includes protocols, design, and analysis along with the control and management of the networks Offers exclusive chapters on advance topics to cover the present and future technological trends, such as, software defined optical networking and the flexible grid optical networks Optical WDM Networks: From Static to Elastic Networks is an excellent book for under and post graduate students in electrical/communication engineering. It will also be very useful to practicing professionals in communications, networking, and optical systems.

Download or read book Design and Analysis of Survivable Wdm Mesh Networks written by Ji Li and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Design and Analysis of Survivable WDM Mesh Networks" by Ji, Li, 李季, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: ABSTRACT Optical mesh networks constructed using Wavelength-Division Multiplexing (WDM) will form the backbone of the next generation Internet. Current WDM technology can comfortably support 10Gbps on each wavelength channel, and with over 100 channels per fiber. In such a high-speed network, an interruption, even lasting for seconds, can cause huge data and revenue loss. In this dissertation, we concentrate on designing a survivable WDM network. Specific protection schemes are designed and studied at three optical transport network layers: IP/MPLS layer, WDM optical layer, and fiber-link layer. At IP/MPLS layer, Multi-Protocol Label Switching (MPLS) protocol provides end- to-end QoS guaranteed transport service to IP traffic. This is achieved by setting up Label-Switched Paths (LSPs) for node pairs on demand. To survive from any single network failure, two disjoint LSPs are established for each connection request. If an LSP fails, the carried traffic is rerouted onto the other/backup LSP. As the bandwidth on backup LSPs can be shared among different calls, it is important to maximize backup resource sharing. To this end, three efficient dynamic restorable routing algorithms are designed based on the two-step routing concept. MPLS can be integrated with Optical Burst Switching (OBS) to form Labeled OBS paradigm. Due to the use of one-way resource reservation, data burst loss due to burst contention can be high. To minimize the burst loss probability, an original Burst Cloning with Load Balancing (BCLB) scheme is also devised. At WDM optical layer, we first introduce the bi-directional WDM transmission technology. Compared with unidirectional WDM systems, bi-directional WDM not only saves the cost of deploying extra fibers, but also allows extra flexibility in bi- directional backup wavelength sharing. To fully exploit this flexibility, two original lightpath protection schemes, BiPro and BiProLP, are proposed. Notably, BiProLP further economizes the hardware cost incurred by BiPro. We then focus on finding most reliable lightpaths with arbitrary risk distribution at the underlying physical layer. Two problems, Minimum Risk Single Path (MRSP) and Most Reliable Path iiPair (MRPP), are formulated and studied. Efficient algorithms are then designed for their solutions based on the label-setting (LS) concept. For survivability at fiber-link layer, connectivity with respect to risk occurrence is crucial in determining the network robustness. We present the first effort in addressing the three minimum risk cut problems: Minimum Risk Single-Pair Cut (MRSPC), Minimum Risk Multi-Pair Cut (MRMPC) and Minimum Risk Multi-Way Cut (MRMWC). We first prove the NP-hardness and non-approximability of the three problems. We then formulate them using Integer Linear Programming. A simple greedy algorithm for solving MRSPC problem is also designed. iii DOI: 10.5353/th_b3857484 Subjects: Wavelength division multiplexing Optical communication systems - Design and construction Optical communications

Download or read book Survivable Design and Analysis of WDM Mesh Networks written by Wei Huo and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, we are particularly interested in studying the impact of network element failure(s) on network survivability. Namely, we propose and analyze a series of models and schemes to protect and restore the affected services in the networks, thus achieve a better survivability in optical networks. In additions to an introduction of optical networks and a survey of the related work, this thesis first focuses on the problem of fast recovery in Chapter 3. By using the framework of Offset-Time restoration, a novel model based on time-driven scheduling is proposed. It substantially shortens the restoration time and can be applied in both single-link failure and dual-link failure scenarios. Next, capacity reprovisioning, as a simple and efficient mechanism to protect a network against multiple failures, is investigated and a new reprovisioning scheme is proposed in Chapter 4. Finally, the application of capacity reprovisioning in traffic grooming is considered. Two frameworks, i.e., lightpath level reprovisioning and connection level reprovisioning, are proposed in Chapter 5 to improve the survivability of optical networks with grooming capability.

Download or read book WDM Optical Networks written by C. Siva Ram Murthy and published by Prentice Hall. This book was released on 2002 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This helpful guide provides practicing engineers, students, and researchers with a systematic, up-to-date introduction to the fundamental concepts, challenges, and state-of-the-art developments in WDM optical networks. The authors rely extensively on real-world examples and draw on the latest research to cover optical network design and provisioning in far greater depth than any other book.

Download or read book Survivability and Traffic Grooming in WDM Optical Networks written by Arun Somani and published by Cambridge University Press. This book was released on 2006-01-19 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of fiber optic transmission systems and wavelength division multiplexing (WDM) have led to a dramatic increase in the usable bandwidth of single fiber systems. This book provides detailed coverage of survivability (dealing with the risk of losing large volumes of traffic data due to a failure of a node or a single fiber span) and traffic grooming (managing the increased complexity of smaller user requests over high capacity data pipes), both of which are key issues in modern optical networks. A framework is developed to deal with these problems in wide-area networks, where the topology used to service various high-bandwidth (but still small in relation to the capacity of the fiber) systems evolves toward making use of a general mesh. Effective solutions, exploiting complex optimization techniques, and heuristic methods are presented to keep network problems tractable. Newer networking technologies and efficient design methodologies are also described.

Download or read book Optical Networks written by Hussein T. Mouftah and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Networks - Architecture and Survivability, is a state-of-the-art work on survivable and cost-effective design of control and management for networks with IP directly over Wavelength Division Multiplexing (WDM) technology (or called Optical Internet). The authors address issues of signaling mechanisms, resource reservation, and survivable routing and wavelength assignment. Special emphasis has been given to the design of meshed, middle-sized, and wavelength-routed networks with dynamic traffic in the optical domain, such as the next-generation Metropolitan Area Network. Research and development engineers, graduate students studying wavelength-routed WDM networks, and senior undergraduate students with a background in algorithms and networking will find this book interesting and useful. This work may also be used as supplemental readings for graduate courses on internetworking, routing, survivability, and network planning algorithms.

Download or read book Survivability and Traffic Grooming in WDM Optical Networks written by Arun Somani and published by . This book was released on 2006-01-12 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides coverage of survivability and traffic grooming; two key issues in modern optical networks.

Download or read book WDM Systems and Networks written by Neophytos Neo Antoniades and published by Springer Science & Business Media. This book was released on 2011-12-07 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling, Simulation, Design and Engineering of WDM Systems and Networks provides readers with the basic skills, concepts, and design techniques used to begin design and engineering of optical communication systems and networks at various layers. The latest semi-analytical system simulation techniques are applied to optical WDM systems and networks, and a review of the various current areas of optical communications is presented. Simulation is mixed with experimental verification and engineering to present the industry as well as state-of-the-art research. This contributed volume is divided into three parts, accommodating different readers interested in various types of networks and applications. The first part of the book presents modeling approaches and simulation tools mainly for the physical layer including transmission effects, devices, subsystems, and systems), whereas the second part features more engineering/design issues for various types of optical systems including ULH, access, and in-building systems. The third part of the book covers networking issues related to the design of provisioning and survivability algorithms for impairment-aware and multi-domain networks. Intended for professional scientists, company engineers, and university researchers, the text demonstrates the effectiveness of computer-aided design when it comes to network engineering and prototyping.

Download or read book Optical WDM Networks written by Jun Zheng and published by John Wiley & Sons. This book was released on 2004-08-04 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: The essential guide to the state of the art in WDM and its vast networking potential As a result of its huge transmission capacity and countless other advantages, fiber optics has fostered a bandwidth revolution, addressing the constantly growing demand for increased bandwidth. Within this burgeoning area, Wavelength Division Multiplexing (WDM) has emerged as a breakthrough technology for exploiting the capacity of optical fibers. Today, WDM is deployed by many network providers for point-to-point transmission-but there is strong momentum to develop it as a full-fledged networking technology in its own right. The telecommunications industry, network service providers, and research communities worldwide are paying close attention. Optical WDM Networks presents an easy-to-follow introduction to basic concepts, key issues, effective solutions, and state-of-the-art technologies for wavelength-routed WDM networks. Responding to the need for resources focused on the networking potential of WDM, the book is organized in terms of the most important networking aspects, such as: * Network control architecture * Routing and wavelength assignment * Virtual topology design and reconfiguration * Distributed lightpath control and management * Optical-layer protection and restoration * IP over WDM * Trends for the future in optical networks Each chapter includes examples and problems that illustrate and offer practical application of concepts, as well as extensive references for further reading. This is an essential resource for professionals and students in electrical engineering, computer engineering, and computer science as well as network engineers, designers, planners, operators, and managers who seek a backbone of knowledge in optical networks.

Download or read book Design and Analysis of Survivability for Emerging Network Applications written by Qingya She and published by . This book was released on 2008 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: We investigate survivable traffic grooming for anycast over Wavelength Division Multiplexing (WDM) networks. An auxiliary graph model and three differentiated survivable schemes based on the graph model are proposed. At last, we focus on reliable multi-resource manycast over Optical Burst Switching (OBS) networks. Reliable transmission mechanisms are proposed to minimize the resource blocking probability, which results from burst contention in the OBS network and from resource unavailability at the destinations. An analytical model for various schemes is developed.

Download or read book Distributed Real Time Algorithms and Design Concepts for Next Generation Survivable Optical Networks written by Emad AlSunkni and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survivable and Availability guaranteed Optical WDM Networks Design and Performance Analysis written by Massimo Tornatore and published by . This book was released on 2005 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: