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Author : Chunling Zhou
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (389 download)
Download or read book Multicast Communication in a Class of WDM Optical Networks written by Chunling Zhou and published by . This book was released on 1998 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peng-Jun Wan
Publisher : American Mathematical Soc.
ISBN 13 : 0821810049
Total Pages : 265 pages
Book Rating : 4.8/5 (218 download)
Download or read book Multichannel Optical Networks: Theory and Practice written by Peng-Jun Wan and published by American Mathematical Soc.. This book was released on 1998 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: A response to the exhaustion of fiber-optic cable network capacity for digital telecommunication and the resulting shift from time-division multiplexing (TDM) to wavelength-division multiplexing (WDM) to add capacity, and the rapid sales of the new technology. Theorists and practitioners in computer science present 17 papers applying theoretical and algorithmic results to such practical problems as admissions control, routing and channel assignments, multicasting and protection, and fault-tolerance. No index. Annotation copyrighted by Book News, Inc., Portland, OR.
Download or read book Techniques to Support Multicast Traffic in Single-Hop WDM Optical Networks written by and published by . This book was released on 1904 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Many applications and telecommunications services in futurehigh-speed networks will require some form of multipointcommunication. The problems associated with providing network support formultipoint communication have been widely studied within anumber of different networking contexts. As current network technologies evolve to an all-optical, largely passive infrastructure, these problems takeon new significance and raise a number of challenging issuesthat require novel solutions. We consider the problem of supporting multipoint communication at the media access control (MAC) layer of broadcast-and-select Wavelength Division Multiplexed (WDM) networks. In this environment, bandwidth consumption and channel utilization arise as two conflicting objectives in the design of scheduling algorithms for multicast traffic. We present a new technique for the transmission of multicast packets which is based on the concept of a virtual receiver. This is a set of physical receivers which behave identically in terms of tuning. We focus on the problem of optimally selecting the virtual receivers, and prove that it is NP-complete. We then present four heuristics of varying degrees of complexity for obtaining virtual receivers that provide a good balance between the two conflicting objectives. The dynamic nature of multicast traffic could affect the balance obtained with the virtual receivers when the network conditions change. We study the sensitivity to changes of the virtual receiver sets and the cost associated with handling the changes. Also, the cost of three different approaches to handling the changes is analyzed. Finally, we study the performance of various strategies for scheduling a combined load of unicast and multicast traffic in a broadcast WDM network. Three different scheduling strategies are presented, namely: separate scheduling of unicast and multicast traffic, treating multicast traffic as a number of unicast messages, and treating unicast traffic as multicasts of size on.
Author : Biswanath Mukherjee
Publisher : Springer Science & Business Media
ISBN 13 : 0387291881
Total Pages : 974 pages
Book Rating : 4.3/5 (872 download)
Download or read book Optical WDM Networks written by Biswanath Mukherjee and published by Springer Science & Business Media. This book was released on 2006-06-15 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and development on optical wavelength-division multiplexing (WDM) networks have matured considerably. While optics and electronics should be used appropriately for transmission and switching hardware, note that "intelligence'' in any network comes from "software,'' for network control, management, signaling, traffic engineering, network planning, etc.The role of software in creating powerful network architectures for optical WDM networks is emphasized. Optical WDM Networks is a textbook for graduate level courses. Its focus is on the networking aspects of optical networking, but it also includes coverage of physical layers in optical networks. The author introduces WDM and its enabling technologies and discusses WDM local, access, metro, and long-haul network architectures. Each chapter is self-contained, has problems at the end of each chapter, and the material is organized for self study as well as classroom use. The material is the most recent and timely in capturing the state-of-the-art in the fast-moving field of optical WDM networking.
Author : Rabi Yousif
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783848482238
Total Pages : 136 pages
Book Rating : 4.4/5 (822 download)
Download or read book Wdm Optical Multicasting written by Rabi Yousif and published by LAP Lambert Academic Publishing. This book was released on 2012-05 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relevant for computer systems and communications engineers as well as networking vendors. Explores the optical multicast wavelength division multiplexing (WDM) technology and the media access control (MAC) protocols that supports multicast traffic in local WDM networks. Presents a comprehensive and comparative study of different challenges faced in the design of multicast technique and schemes. Investigates design issues and considerations for flexible and scalable network architecture such as multicast wavelength assignment problem, transceivers tuning limitations, multicast scheduling algorithms, reconfiguration techniques, and survivability strategies. Provides a thorough analysis of the single-hop WDM optical network based on the broadcast-and-select with passive star coupler (PSC) system.
Author : Peng-Jun Wan
Publisher : American Mathematical Soc.
ISBN 13 : 9780821870907
Total Pages : 268 pages
Book Rating : 4.8/5 (79 download)
Download or read book Multichannel Optical Networks written by Peng-Jun Wan and published by American Mathematical Soc.. This book was released on 1998-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time division multiplexing (TDM) has been the fundamental basis for adding capacity to digital telecommunications networks for decades. However, within the past two years, wavelength division multiplexing (WDM) has been emerging as an important and widely deployed complement to TDM. Sales of systems based on the new technology have risen at breathtaking speed. The driving force behind this sales explosion was the unexpected rapid exhaustion of long distance fiber network capacity. This fiber exhaust, combined with favorable economics for WDM, led to the use of this technology over other alternatives. The WDM deployment raises fundamental and challenging problems that require novel and innovative solutions. This volume presents papers from an interdisciplinary workshop held at DIMACS on multichannel optical networks. Leading computer science theorists and practitioners discussed admissions control, routing and channel assignment, multicasting and protection, and fault-tolerance. The book features application of theoretical and/or algorithmical results to practical problems and addresses the influence of practical problems to theoretical/algorithmic studies. The volume can serve as a text for an advanced course in computer science, networking, and operations research.
Author : Xiaohua Jia
Publisher : Springer Science & Business Media
ISBN 13 : 1475735634
Total Pages : 282 pages
Book Rating : 4.4/5 (757 download)
Download or read book Multiwavelength Optical Networks written by Xiaohua Jia and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiwavelength Optical Networks systematically studies the major research issues in WDM (Wavelength Division Multiplexing) optical networks, such as routing and wavelength assignment, QoS multicast routing, design of logical topologies, and placement of wavelength converters. The book consists of two parts. The first part studies the fundamental concepts and principles of WDM networks. The second part discusses advanced and research issues of WDM networks. The authors of the book have many years of working experience in the areas of computer networks and network optimization. The book discusses many difficult issues of WDM networks in a very comprehensive way. For each problem, there is a background discussion, and then the mathematical formulation, followed by the solutions.
Author : Lu Ruan
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (319 download)
Download or read book Multicast and Broadcast Routing in WDM Optical Networks written by Lu Ruan and published by . This book was released on 2001 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wanjun Huang
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (795 download)
Download or read book Engineering of Multicast Traffic in Optical Networks written by Wanjun Huang and published by . This book was released on 2012 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing number of services over the Internet which are best supported by multicasting transmission, defined as one source node of information delivering it to a number of destinations. Optical networking is a promising technology for supporting the expected large volume of multicast traffic, due to its native ability to offer high transmission rates, e.g., 10, 40, 100 Gbps. Optical technology is also well suited for circuit oriented services. Circuits can be created by either reserving an entire wavelength (color) in Wavelength Division Multiplexing (WDM) network, or by reserving just a sub-carrier of a wavelength. In the dissertation, we refer to this assigned wavelength or sub-wavelength as a color which has to be assigned to the circuit. The main contribution of this dissertation is the introduction of a metric (contention degree) solution that is enabling the routing algorithm (or protocol) to account for the problem of assigning a color to the circuit. The objective of the routing algorithm is to compute the multicast tree for the multicast request to span across the network.
Author : Shruthi Harve
Publisher :
ISBN 13 : 9781124219639
Total Pages : pages
Book Rating : 4.2/5 (196 download)
Download or read book Optical Multicasting in Multi-Line-Rate Ethernet-over-WDM Backbone Networks written by Shruthi Harve and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ethernet is the dominant technology for local-area networks (LANs) due to its simplicity, flexibility, and cost efficiency. In order to carry Ethernet traffic over backbone networks of metropolitan-area networks (MANs) and wide-area networks (WANs), the current mode of operation requires the conversion of Ethernet signals to technologies used by the backbone networks using complex and expensive equipment. In order to avoid this sort of unnecessary conversion, efforts are now under way to extend the usage of Ethernet from LANs to carrier-grade Ethernet in backbone networks of different service providers, and to provide a unified platform for transporting traffic. With the advent of muticast applications such as Internet Protocol TV (IPTV) and Video-on-Demand, there is a need for techniques to efficiently route multicast traffic over Ethernet backbone networks. Here, we address the problem of Routing and Wavelength Assignment (RWA) of a set of multicast requests in a Multi-Line-Rate (MLR) Ethernet backbone network with the objective of minimizing the cost of setting up the network, in terms of the Service Provider's Capital Expenditure (CAPEX). We present an Auxiliary Graph-based heuristic algorithm that routes each multicast request on a light-tree structure, and assigns minimum-cost wavelengths along the route. The algorithm utilizes the flexibility extended by MLR wavelength-division-multiplexed (WDM) optical networks used to construct the Ethernet backbone, by re-using channels, and using appropriate weight-assignment schemes to make a cost-efficient choice of wavelengths. We compare the properties of the algorithm to the optimal solution given by a mathematical model formulated as an Integer Linear Program (ILP), and show that they compare very well for small networks. The algorithm is tested on bigger networks, and it is shown that the algorithm is most cost-effective when the incoming traffic requests are processed in descending order of their bandwidth requirements, while using the linear weight-assignment scheme with volume discount.
Author : C. Siva Ram Murthy
Publisher : Prentice Hall
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.3/5 (91 download)
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.
Author : Krishna M. Sivalingam
Publisher : Springer Science & Business Media
ISBN 13 : 0306470217
Total Pages : 351 pages
Book Rating : 4.3/5 (64 download)
Download or read book Optical WDM Networks written by Krishna M. Sivalingam and published by Springer Science & Business Media. This book was released on 2006-04-18 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical WDM networking technology is spearheading a bandwidth revolution in the networking infrastructure being developed for the next generation Internet. Rapid advances in optical components have enabled the transition from point-to-point WDM links to all-optical networking. Optical WDM Networks: Principles and Practice presents some of the most important challenges facing the optical networking community, along with some suggested solutions. Earlier textbooks in optical networking have a narrower perspective, and rapidly advancing research has created the need for fresh and current information on problems and issues in the field. The volume editors and contributing authors have endeavoured to capture a substantial subset of the key problems and known solutions to these problems. All of the chapters are original contributions from leading international researchers. The chapters address a wide variety of topics, including the state of the art in WDM technology, physical components that make up WDM fiber-optic networks, medium access protocols, wavelength routed networks, optical access networks, network management, and performance evaluation of wavelength routing networks. The chapters also survey critical points in past research and tackle more recent problems. Practitioners and network product engineers interested in current state-of-the-art information beyond textbook-type coverage, and graduate students commencing research in this area, will appreciate the concise - and pertinent - information presented herein.
Download or read book Multicast communication in optical ip internetworks written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A difusão seletiva e os recentes avanços na tecnologia de transmissão óptica, mais especificamente na multiplexação por comprimento de onda (Wavelength Division Multiplexing-WDM), aliados à consolidação do IP como protocolo dominante das redes convergentes, vêm oferecendo novas perspectivaspara as futuras gerações de inter-redes. Este trabalho faz uso da evolução dessas tecnologias para propor um conjunto de adaptações à difusão seletiva, em especial ao IP Multicast, denominado MIRROR (Multicast IP para Redes baseadas em Rajadas Ópticas Rotuladas). A proposta MIRROR sugere modificações e adequações para tornar o IP Multicast menos complexo, mais escalável em relação ao número de grupos ativos simultaneamente e mais adequado às redesbaseadas em comutação óptica. Basicamente, MIRROR revê a necessidade de todos os roteadores ao longo da árvore de distribuição multiponto manterem informações de estado relacionadas a esta, bem como sugere adequações na formacomo os caminhos multiponto são estabelecidos quando se emprega comutação baseada em rótulos na difusão seletiva. Para avaliar a proposta MIRROR, investiu-se em duas frentes distintas, uma baseada na análise comparativa entre aMIRROR e algumas alternativas ao IP Multicast apresentadas na literatura, e outra baseada no desenvolvimento de um protótipo da proposta no simulador NS (Network Simulator), com o intuito de referendar os resultados da análisecomparativa. Na análise comparativa, confronta-se parâmetros como: requisitos de informações de estado, custo com informações de controle, custo de encaminhamento dos pacotes e custo da árvore de multiponto. O desenvolvimentodo protótipo envolveu a criação de uma nova estrutura de nó e a alteração de módulos já existentes no NS, para tornar possível a simulação de redes comutadas por rajadas ópticas rotuladas no contexto da difusão seletiva.
Author : Zeydy Ortiz-Laureano
Publisher :
ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (442 download)
Download or read book Techniques to Support Multicast Traffic in Single-hop WDM Optical Networks written by Zeydy Ortiz-Laureano and published by . This book was released on 1998 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: pre-transmission coordination, scheduling algorithms, lightwave networks, broadcast star topology, media access.
Author : Rabi W. Yousif
Publisher :
ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (975 download)
Download or read book Multicasting in WDM Single-hop Local Lightwave Networks written by Rabi W. Yousif and published by . This book was released on 2000 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: In modern networks, the demand for bandwidth and high quality of service (QoS) requires the efficient utilisation of network resources such as transmitters, receivers and channel band~idth. One method for conserving these resources is to employ efficient implementations of multicasting wherever possible. Using multicasting, a source sending a message to multiple destinations may schedule a single transmission which can then be broadcasted to multiple destinations or forwarded from one destination to another, thus conserving the source transmitter usage and channel bandwidth. This thesis investigates the behaviour of single-hop WDM optical networks when they carry multicast traffic. Each station in the network has a fixed-wavelength transceiver and is set to operate on its own unique wavelength as a control channel. Each station also has a tuneable wavelength transceiver in order to transmit or receive signals to or from all the other stations. A transmission on each channel is broadcasted by a star coupler to all nodes. Multicasting in single-hop WDM networks has been studied with different protocols. This thesis studies the multicasting performance adopting receiver collision avoidance (RCA) protocol as a multicasting protocol. This study takes into consideration the effect of the tuneable transceiver tuning time which is the time required to switch from one wavelength to another, and the propagation time required by a packet to propagate from one node to another. The strategy in RCA protocol is that nodes request transmission time by sending a control packet at the head of their queues. Upon receipt of this information all nodes run a deterministic distributed algorithm to schedule the transmission of the multicast packet. With the control information, nodes determine the earliest time at which all the members of the multicast group can receive the packet and the earliest time at which it can be transmitted. If a node belongs to the multicast group addressed in the control packet, its receiver must become idle ~ntil all nodes in the group have tuned to the appropriate wavelength to receive the packet. This problem leads to poor transmission and consequently low channel utilisation. However, throughput degradation due to receiver conflicts decreases as the multicast size increases. This is because for a given number of channels, the likelihood of a receiver being idle decreases as the number of intended recipients per transmission increases. The number of wavelengths available in a WDM network continues to be a major constraint. Thus in order to support a large number of end users, such networks must use and reuse wavelengths efficiently. This thesis also examines the number of wavelengths needed to support multicasting in single-hop optical networks. This thesis shows that the system under study can accommodate large tuning delays and keeps with suitable throup) hput when the number of wavelength is equal to the number of nodes. When the number of wavelengths is comparable to the number of users the tuning time influence on the packet delay increases. This thesis also shows that when the size of multicast packet and receiver tuning delay increase the throughput decreases.
Author : Mingtao Yang
Publisher :
ISBN 13 :
Total Pages : 330 pages
Book Rating : 4.:/5 (484 download)
Download or read book Scheduling Unicast and Multicast Traffic in WDM Local Optical Networks and Back Propagation Training for an Optical Neural Network written by Mingtao Yang and published by . This book was released on 2001 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Sethumadhavan
Publisher : Alpha Science Int'l Ltd.
ISBN 13 : 9788173197314
Total Pages : 254 pages
Book Rating : 4.1/5 (973 download)
Download or read book Discrete Mathematics and Its Applications written by M. Sethumadhavan and published by Alpha Science Int'l Ltd.. This book was released on 2006 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discrete Mathematics and its Applications provides an in-depth review of recent applications in the area and points to the directions of research. It deals with a wide range of topics like Cryptology Graph Theory Fuzzy Topology Computer Science Mathematical Biology A resource for researchers to keep track of the latest developments in these topics. Of interest to graph theorists, computer scientists, cryptographers, security specialists.
