2 edition of Providing high throughput and controllable performance in burst-switched optical networks found in the catalog.
Providing high throughput and controllable performance in burst-switched optical networks
Written in English
In this thesis, I examine the problem of providing high throughput and controllable and predictable performance in OBS networks. I present new analytical models which, for the first time, allow one to quantify precisely the effect of offsets on the performance of OBS networks. I then present a new OBS signaling architecture called dual-header optical burst switching (DOBS), which allows for precise control of offsets in every node of the network. I show how DOBS signalling can reduce the complexity of core-node burst schedulers from O(log W) to O(1), where W is the number of wavelengths in the system. I also present a new scheduling algorithm that minimizes burst blocking in core nodes of a DOBS network. This allows the system to support an offered load that is between 10% and 50% higher than that of a single-header OBS system for a given target blocking probability.By increasing the understanding of the effect of OBS offsets and by providing mechanisms by which they can be precisely controlled, the contributions of this work provide OBS researchers with a powerful toolset for providing the reliable and predictable end-to-end performance guarantees required by next-generation Internet applications and brings optical burst switching one step closer to commercial viability.Optical fiber networks, and in particular wavelength division multiplexing, are the only technologies capable of supporting the huge bandwidth demand that has accompanied the explosive growth of the Internet. Optical burst switching (OBS) has emerged as a very promising candidate architecture for next generation optical networks because it combines the simple optical technology of optical circuit switching with the flexibility and bandwidth efficiency of optical packet switching. The most distinguishing feature of OBS is the use of a time offset between the header and payload of each burst. These offsets allow for the time required to perform switching and forwarding operations in each node and directly affect the complexity, throughput performance and end-to-end delay of OBS systems.
|Statement||by Neil Barakat.|
|The Physical Object|
|Pagination||xviii, 160 leaves.|
|Number of Pages||160|
Optical buffering is known to significantly improve the performance of optical packet and burst switched networks and a number of useful analytic models for the case of Poisson traffic have been proposed previously. Optical burst switching (OBS) that combines the advantages of OCS and OPS is an emerging technology to exploit the potential benefits of optical communication, that allow variable burst sizes and has gained much attention from both academic and industry. Low delay and also to reduce burst overlap in the electronic domain of an ingress node and hence to reduce burst loss improves quality of.
We need to have a new switching type to achieve an ultra-high throughput and real-time provisioning of data transmission. “Design and Analysis of Optical Burst-Switched Networks,” Proceedings of All-Optical Networking Architecture, Control, and Management Issues, pp. . TCP performance over optical burst-switched networks with different access technologies.
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A key problem in Optical Burst Switching (OBS) is to schedule as many bursts as possible on wavelength channels so that the throughput is maximized and the burst loss is minimized. Currently, most of the research on OBS (e.g., burst scheduling and assembly algorithms) has been concentrated on reducing burst loss in an. Performance of Optical Burst Switched Networks for Grid Applications.
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Abstract: In this paper, we consider the performance of the transmission control protocol (TCP) when used in data center networks featuring optical burst switching (OBS). We evaluate the performance using network-level simulation. The bandwidth-delay product in wide-area OBS networks is high enough to require the use of one-way reservation to achieve good throughput.
Performance of optical burst switched WDM ring network with TTFR system but also provides high throughput, high bandwidth utilization, and low transmission latency. In this paper we. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): In this dissertation, we studied the performance of Optical Burst Switching (OBS).
OBS is a promising new solution for the next-generation optical Internet. In the first part of the dissertation, we studied a novel WDM ring network with OBS.
The ring consists of N nodes, and each node owns a home wavelength on which. An Analytical Approach to Optical Burst Switched Networks discusses architectures such as SOBS, SynOBS, HiTSOBS and applications of OBS networks in grid computing in metropolitan and access networks.
As physical optical networks are equipped with finite number of optical channels in each fibre cable, throughput of the network is treated as a major performance issue. This book provides an overview of optical burst switching. Design and research issues involved in the development of OBS networks are discussed, and approaches to providing QoS in OBS networks are presented.
Topics include: Optical burst switching node and network architectures - Burst assembly - Signaling protocols - Contention resolution. Optical burst switched (OBS) network architecture. is comparable to the burst length, lower loss probability can be achieved. However, the overhead of network control and management is high due to the highly dynamic re-routing, resulting in unstable routing tables.
Comparison of end-to-end throughput performance. Conclusion. In the event of a contention on an output link at a switch, the burst is dropped. This network is similar to the load sharing models in circuit multiplexed networks (see, e.g.,) with an important difference described by the following er the network shown in Fig.
a burst designated for route R 2 arrives and link l 5 (CD) is in a blocking state while link l 4 (AC) is not. In recent years, as the bandwidth and the speed of networks have increased significantly, a new generation of network-based applications using the concept of distributed computing and collaborative.
Selected topics in optical burst switched networks. Performance analysis Laura Capdevila 9 CHAPTER 1. OBS Basics Introduction Nowadays, there is an increasing demand of transmission bandwidth as a result of the data traffic growth. Optical Burst Switching (OBS)  is a promising alternative for the future optical network data plane to deal with the bursty and dynamic Internet traffic with high.
Optical burst switching (OBS) is an optical networking technique that allows dynamic sub-wavelength switching of data. OBS is viewed as a compromise between the yet unfeasible full optical packet switching (OPS) and the mostly static optical circuit switching (OCS).
It differs from these paradigms because OBS control information is sent separately in a reserved optical channel and in advance. The proposed solution does not suffer performance degradation under heterogeneous traffic conditions and increasing number of nodes.
It is thus unique in offering the potential for an all-optical solution and providing at the same time high throughput, low delay, small buffer requirements, and robustness under all traffic conditions. To address the new requirements on optical networks imposed by the upcoming fifth-generation wireless (5G), such as high bandwidth, low latency, accurate synchronization, high reliability, and flexible application-specific network slicing, a new generation of optical networks that.
Performance Improvement Methods for Burst-Switched Networks Article (PDF Available) in Journal of Optical Communications and Networking 3(2) February with Reads.
Burst-Switched Networks C. Li, P. Wai, and Victor O.-K. Li Abstract—In this paper, we present a performance model of optical burst switching (OBS) that can explain the degradation of OBS throughput performance when the control packet processing time increases.
We then use the proposed performance model to investigate three feasible. For optical burst-switched (OBS) networks in which TCP is implemented at a higher layer, the loss of bursts can lead to serious degradation of TCP performance.
Due to the bufferless nature of OBS, random burst losses may occur, even at low traffic loads. Consequently, these random burst losses may be mistakenly interpreted by the TCP layer as congestion in the network. High-Performance Data Network Design is a "must have" for anyone seriously involved in designing data networks.
Together with the companion volume, Data Networks: Routing, Security, and Performance Optimization, this book gives readers the guidance they need to plan, implement, and optimize their enterprise infrastructure. This method achieves significant power consumption reduction (up to 30%) with little impact to the resulting throughput.
Memory references in network processors present high divergence in terms of their locality characteristics. Based on this observation, a methodology to classify the memory references of a packet stream has been developed [ Optical Packet Switching with Distributed Control for High Performance Data Center Networks Data Centers (DCs) are facing the rapid growth of data tra c due to the increasing demand of emerging bandwidth-hungry internet services.
Typi-cally, the intra-DC network is based on a fat-tree architecture. This network. control and data domains that can yield better network manageability and flexibility. Since the launched bursts cut-through the network core without any buffering, the bursts can be subject to a minimum amount of delay C.
Optical Burst Switched (OBS) Networks OBS networks are basically bufferless yet best-effort in nature i .A simplified mathematical model for evaluating the performance of optical burst switching networks is proposed.
This model is described using a detailed state diagram. Two performance measures, namely, steady-state system throughput and average blocking probability, are derived based on the equilibrium point analysis technique.
The effects of several design parameters on the above performance.In an optical burst switched network, variable-sized data bursts are switched on the fly using bandwidth 9 previously reserved by their control packets.
A key problem in OBS networks is the assignment of wavelengths to incoming bursts, that is, the scheduling of bursts.