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Book Quality of Service in Optical Packet Switched Networks

Download or read book Quality of Service in Optical Packet Switched Networks written by Akbar G. Rahbar and published by John Wiley & Sons. This book was released on 2015-01-23 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive study on OPS networks, itsarchitectures, and developed techniques for improving its qualityof switching and managing quality of service. The bookincludes: Introduction to OPS networks, OOFDM networks, GMPLS-enabledoptical networks, QoS in OPS networks Hybrid contention avoidance/resolution schemes in bothlong-haul and metro optical networks Hybrid optical switching schemes

Book Dissertation Abstracts International

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1994 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Performance Analysis of High speed Optical Packet Switching in High Performance Computing and Datacentre Networks

Download or read book Performance Analysis of High speed Optical Packet Switching in High Performance Computing and Datacentre Networks written by Wang Jingyan and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The massive growth in datacentre traffic, due to a huge increase in the deployment of data-intensive applications, is forcing datacentre infrastructure to migrate away from conventional electronic packet-switched networks, where capacity scaling imposes significant financial and technical constraints, and to evolve towards more advanced architectures. Motivated by this, new optical switching technologies and networking architectures, capable of providing very large bandwidth capacity, high scalability, high switching speed and high energy efficiency, are being targeted for building next-generation high-performance datacentre and High Performance Computing (HPC) networks. Optical packet switching technology is considered to be a long-term solution to meet these design challenges, as it can exploit fully the enormous potential capacity enabled by optics and support high switching flexibility at packet level. In this thesis, new wavelength-routed optical packet switching architectures, which exploit the functionalities of key optical switching components such as Tunable Wavelength Converters (TWCs), Arrayed Waveguide Gratings (AWGs) and Wavelength Selective Switches (WSSs), to realise all-optical switching, are proposed for use as next-generation datacentre and HPC networks. To maximise the efficiency of the proposed optical switching architecture, a dynamic bandwidth provisioning algorithm, which allocates switch resources to traffic demands based on application requirements, is developed to further enhance network flexibility, resource utilisation and network performance. Moreover, based on the proposed switch architectures, a large-scale high-performance datacentre network with flexible central control is modelled, with a view of determining the optimal network topology and traffic scheduling methods. This flexible network architecture employs a modular design and combines transparent optical packet switches, based on Arrayed Waveguide Grating (AWG) routers, and a hybrid congestion control scheme using recirculating Fibre Delay Lines (FDLs) along with novel packet retransmission schemes. The work carried out in this thesis indicates that the proposed network structure not only provides high scalability, capable of hosting hundreds of thousands of severs, but also delivers high bandwidth utilisation and network provisioning flexibility. The network offers a promising and viable networking solution to address current and future application needs in datacentre and HPC environments.

Book Performance Evaluation of Optical Packet Switching Technology

Download or read book Performance Evaluation of Optical Packet Switching Technology written by Tuan Dung Nguyen and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid growth in client application demands, in terms of bandwidth and (QoS), has motivated the deployment of the optical technology at Metro Access and Metro Core Networks. More diverse and more intelligent optic devices are required for efficiently management of huge capacity in the network. The explosion in demand for network bandwidth is mainly due to the growth in data traffic whose nature is also becoming more and more complex. In general, most of service-based traffics are transported in networks which are now being dominated by the optical switching technology. Nevertheless, such technology has some drawbacks such as inflexible and non-scalable properties. (OPS), which offers significant benefits in terms of both network efficiency and control scalability, may overcome these limitations. This has motivated the orientation from optical circuit switching to optical packet switching in the future network infrastructure. In reality, optical packet switching ring (OPSR) networks, which combine the packet switching technology with the well-known advantages of ring topology such as fast service restoration in cases of failure and high gain of statistical traffic multiplexing over the ring, appear to be the technology of choice for the next generation of Metro Area Networks. A new OPSR architecture which is based on the all-optical infrastructure that offers intelligent features with lower cost while maximizing processing time and is now considering being replaced existing opto-electronic architectures such as Resilient Packet Ring, have been presented in the scope of the dissertation. The key element of such network is Packet Optical Add/Drop Multiplexer (POADM) which is implemented inside a ring node, allowing the node to exploit the optical transparency. This dissertation hence focuses on the performance evaluation of the new generation of OPSR network. In this dissertation, we have investigated the performance analysis (in terms of packet delay and queue-length distribution of access nodes) of an optical synchronous bus-based metropolitan network supporting fixed-size packets. We have modeled each access node by an embedded discrete time Markov chain (EDTMC). The solution of the EDTMC allows us to compute the approximate probability that access nodes on the bus “see” free slots in the transit line. Using a recursive analysis technique, we approximately outline the mean waiting time of client packets coming from the upper layer as well as an approximate queue-length distribution of local buffers at access nodes in two cases: with and without QoS guarantees. To characterize the performance of an asynchronous OPSR network, we have evaluated the impact of Optical fixed-Size Packet Creation on the network performance without and with different quality of services (QoS) requirements. Performance analysis of such systems has allowed us to identify a reasonable combination of some parameters (timeslot duration, timer expiration values, profile of client traffic and network load) which may be able to improve the bandwidth utilization of the network for a given traffic matrix. The most important point that we have mentioned in the dissertation is the comparison of two architectural approaches: Variable Length - Optical Packet Format (VL-OPF) model supporting empty packets versus Fixed Length - Optical Packet Format (FL-OPF) model. In addition to CoS-Upgrade Mechanism (CUM) which is proposed to improve the filling ratio of the optical container, we have proposed a novel mechanism named Dynamic CoS-Upgrade Mechanism (DCUM) where timers are dynamically changed according to the state of the local buffer of network nodes and the traffic circulating in the network, in order to create containers with a high filling ratio while limiting the time needed for their creation.

Book American Doctoral Dissertations

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1993 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Performance Analysis of the Packet Switching System in a Typical Local Network

Download or read book The Performance Analysis of the Packet Switching System in a Typical Local Network written by Joon-Nyun Kim and published by . This book was released on 1986 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Proceedings

Download or read book Proceedings written by and published by . This book was released on 1997 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Optical Engineering

Download or read book Optical Engineering written by and published by . This book was released on 2006 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes papers reporting on research and development in optical science and engineering and the practical applications of known optical science, engineering, and technology.

Book Optical Transmission Switching and Subsystems II

Download or read book Optical Transmission Switching and Subsystems II written by and published by . This book was released on 2005 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Electrical Electronics Abstracts

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 1904 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Optical Switching

Download or read book Optical Switching written by Tarek S. El-Bawab and published by Springer Science & Business Media. This book was released on 2008-02-11 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of optical switching in network elements and communication networks are discussed in considerable depth. Optical circuits, packet, and burst switching are all included. Composed of distinct self-contained chapters with minimum overlaps and independent references. Provides up-to-date comprehensive coverage of optical switching, technologies, devices, systems and networks. Discusses applications of optical switching in network elements and communications networks.

Book Optical Fiber and Wireless Communications

Download or read book Optical Fiber and Wireless Communications written by Rastislav Róka and published by BoD – Books on Demand. This book was released on 2017-06-21 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Optical Fiber and Wireless Communications provides a platform for practicing researchers, academics, PhD students, and other scientists to review, plan, design, analyze, evaluate, intend, process, and implement diversiform issues of optical fiber and wireless systems and networks, optical technology components, optical signal processing, and security. The 17 chapters of the book demonstrate capabilities and potentialities of optical communication to solve scientific and engineering problems with varied degrees of complexity.