This paper mainly focuses on channel scheduling algorithms of core routers and proposes a new practical scheduling algorithm. Optical burst switching is a promising solution for all optical wdm networks it combines the benefits of optical packet switching and wavelength routing while taking into account the limitations of current all optical technology in obs the user data is collected at the edge of the network, sorted based on destination address,and grouped into variable sized bursts prior to transmitting a burst. In the new algorithm, burst segmentation, one of the contention resolution schemes that are another major. Evaluation of reservation mechanisms for optical burst switching. Modeling and analysis of the optical burst switching network. The concept of burst switching was proposed initially in the context of voice communications by haselton 1983 and amstutz 1983.
Optical burst switching technology around the optical burst technology network architecture. In 6, optical composite burst switching ocbs with headdropping was proposed. More recently, in the late 1990s, optical burst switching obs was proposed as a new switching paradigm for the socalled optical internet in. Optical burst switching seminar report and ppt for cse. In obs, incoming data is assembled into bursts at the edges of the network, and when the burst is ready to be sent, resources in the network are reserved only for the duration of the burst. Optical burst switching obs is a technology positioned between wavelength routing and optical packet switching that does not require optical buffering or packetlevel parsing, and it is more efficient than circuit switching when the sustained traffic volume does not consume a full wavelength. Simulation results also show that the retransmission technique is particularly suitable for metropolitan or local area network where the additional delay incurred by the retransmission is negligible. Optical burstswitching obs is one such method for transporting traffic directly over a bufferless wdm network.
In this paper, we describe the basic concept of obs and present a general architecture of optical core routers and electronic edge routers in the obs network. Pdf comparing optical packet switching and optical burst. Optical burst switching obs has advantages of both optical packet switching ops and optical circuit. Optical burst switching obs is a promising solution for building terabit optical routers and realizing ip over wdm. Optical burst switching obs 7, 8 is a promising switching technology that ef. Abstract optical switching in nextgeneration data centers houman rastegarfar doctor of philosophy graduate department of electrical and computer engineering. In order to provide optical switching for next generation internet traf. As a promising solution for the next generation optical internet, optical burst switching still has much to be improved, especially the design of core routers. This paper describes the simulation of the performance of an optical burst switching. Pdf routing optimization in optical burst switching. Osa burst segmentation for voidfilling scheduling and. Simulation of optical burst switching protocol and physical layers.
On optical burst switching and selfsimilar traffic ieee. Based on the queuing model, a constraint analysis is done to show that the burst assembly time at the ingress edge node cannot be arbitrarily large or small. Also explore the seminar topics paper on optical burst switching with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year computer science engineering or cse students for the year 2015 2016. Wdm with emerging all optical packet switching capabilities to yield optical routers capable of guaranteeing a fully optical data path and throughputs in the hundreds of terabitssecond range 1, 2. A general diagram for node and architecture of obs is shown in figure 1. An introduction to optical burst switching ieee journals. It mentions advantages and disadvantages of optical circuit switching, optical burst switching and optical packet switching types. Obs has recently been proposed 1, 2 and attracted much attention from the networking research community. Performance improvement in optical burstswitching networks. It differs from these paradigms because obs control information is sent separately in a reserved optical. Design of wavelength converting switches for optical burst. However its burst loss performance can be highly affected by burst contention. Decision tree rule learning approach to counter burst header packet flooding attack in optical burst switching network adel rajab, chintser huang, mohammed alshargabi pages 1526. Optical communication system will continue to play significant role in the development of emerging network infrastructure.
With respect to current technology presently optical burst switching obs is the most suitable aon control framework. In general, the size of the burst can be of any length with minimum of one packet duration. The switches may be adjacent or connected by lightpaths. Optical burst switching obs for next generation optical. Wdm with emerging alloptical packet switching capabilities to yield optical routers capable of guaranteeing a fully optical data path and throughputs in the hundreds of terabitssecond range 1, 2. Jan 24, 2014 ops optical packet switching high bandwidth utilization due to statistical multiplexing need to buffer packets at intermediate nodes not feasible in the near future 7. Optical switchingcircuit,burst,packet switching in optical. Optical packet switching and optical burst switching. A lightpath is a circuitswitched connection consisting of the same. Reliable optical burst switching for nextgeneration grid. We study one possible optical pack et switching technique optical burst switching. One such approach is optical circuit switching based on wavelength.
In obs, the user data is collected at the edge of the network. Techniques for optical packet switching and optical burst switching, ieee commun. They bring together academic and industrial contributions, analytical and descriptive treatments, and cover theories, experimentation, and practice. Tzanakaki, the application of optical packet switching in future communication networks, ieee commun. Networking services like hdtv, videoconferencing, grid computing and other bandwidthhungry applications can see a new day with obs potentially providing humongous throughput and utilization at the lower. Optical network, optical burst switching, contention reduction, burst retransmission. Switching in core optical networks is currently being performed using highspeed electronic or all optical circuit switches. Optimal burst scheduling in optical burst switched networks. Optical burst switching obs has advantages of both optical packet switching ops. These switching techniques primarily differ based on how resources are allocated in the core and the. Conventional mems works by reflecting the beam of light from the surface of a tiny mirror.
Selected topics in optical burst switched networks laura. A simple node architecture for optical burst switching. In this dissertation, we address the issue how to provide qos control and improve performance in obs networks. An optical packet network consists of optical packet switches interconnected with fibers running wdm. Optical burst switching obs is a promising new technique which attempts to address the problem of efficiently allocating resources for bursty traffic. In the new algorithm, burst segmentation, one of the contention resolution schemes that are another. In obs, data is transported in the form of optical burst. Obs is a hybrid switching technology that uses electronics to control routing decisions, but keeps data in optical form as it passes j. Optical burst switching obs is an optical network technology that aims to improve the use of optical networks resources when compared to optical circuit switching ocs. We use a simplified analytical model of obs network with an overall burst loss probability as the primary metric of interest.
Ops optical packet switching high bandwidth utilization due to statistical multiplexing need to buffer packets at intermediate nodes not feasible in the near future 7. It is assembled at an ingress router by aggregating a no. Also explore the seminar topics paper on optical burst switching with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2015 2016. Optical burst switching obs is assumed to be the technology of the next generation. The present invention relates to an optical burst switching obs network. Optimal burst scheduling in optical burst switched networks yuhua chen, member,ieee, jonathan s. It consists in the aggregation of multiple data packets into a burst.
Rather, it has finite lower and upper limits depending on the network parameters. The following is a list of the exact nature of investigations carried out related to obs networks. In obs networks a control packet is sent first, on a separate signaling channel, to set up a connection followed by a data burst. The wavelength conversion is a burstcontention avoidance technique in which a burst from an incoming wavelength is switched to a di. We study one possible optical pack et switching techniqueoptical burst switching. Applications of optical switching in communication networks are discussed, involving optical circuit, packet, and burst switching. In obs networks, bursts of data consisting of multiple packets are switched. Optical burst switching optical network technology. Oct 18, 2011 optical burst switching obs is an optical network technology that aims to improve the use of optical networks resources when compared to optical circuit switching ocs.
An introduction to optical burst switching abstract. Current trends and future research issues find, read and cite all the. Traffic analysis in optical burst switching networks. Turner, fellow,ieee, and pufan mo abstractoptical burst switching obs is an emerging tech nology that allows variable size data bursts to be transported di.
It combines the benefits of optical packet switching and wavelength routing while taking into account the limitations of the current alloptical technology. Citeseerx an introduction to optical burst switching. Optical burst switching obs4 combines the best of optical circuit switching and packet switching and can be used to carry ip over dwdm. Switch architecture for optical burst switching networks monther aldwairia, mohamed guleda, mark cassadab, mike prattb, daniel stevensonb, paul franzona anorth carolina state univ. Also explore the seminar topics paper on optical burst switching with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year. It combines the best feature of both circuit switching and packet switching 7. To support bursty traffic on the internet and especially www efficiently, optical burst switch ing obs is proposed as a way to streamline both protocol and. Osa burst segmentation for voidfilling scheduling and its. Optical burst switching is a promising solution for alloptical wdm networks. In a obs network, a data burst consisting of multiple data. Qos control and performance improvement methods for optical burst switching networks abstract optical burst switching obs has been proposed as a promising switching technology for the next generation of optical transport network. By applying more current, the mirror can move faster, but theres a limit to how much current can. Introduction all optical networking with wavelength division multiplexing wdm is widely regarded as the most promising candidate as the backbone network for future high speed communications because of its huge bandwidth 3. Optical burst switching seminar report and ppt for cse students.
Congestion control strategy in optical burst switching networks. Optical burst switching networks obs is considered as a up and coming improvement for data transfer in optical networks 1. This page compares optical circuit switching vs optical burst switching vs optical packet switching and mentions difference between optical circuit switching, optical burst switching and optical packet switching. While much has been published on the subject in individual articles, this text is the first to cohesively present optical switching in a single book. Techniques for optical packet switching and optical burst. Optical burst switching obs is one such method for transporting traffic directly over a bufferless wdm network. Optical burst switching provides a feasible paradigm for the next ip over optical backbones.
Evaluation of burst loss rate of an optical burst switching. Pdf an allops network architecture displays a very attractive prospect for the future highly flexible optical transport networks. A detailed queuing model of the optical burst switching network has been proposed. Optical burst switching obs is an optical networking technique that allows dynamic subwavelength switching of data. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Optical packet switching, optical burst switching, contention resolution, packethandling schemes, reservation mechanisms, burst assembly. Switching in core optical networks is currently being performed using highspeed electronic or all. Obs is implemented using wavelength division multiplexing wdm, a data transmission technology that transmits data in an optical fibre by establishing several channels. It combines the benefits of optical packet switching and wavelength routing.
All optical internet may one day come true, due to the mplosive bandwidth requirement, and advances of enabling optical communication techniques. Then, this burst is transmitted without the need of any type of. The re maining sections of this paper will describe. Optical burst switching is a promising solution for all optical wdm networks it combines the benefits of optical packet switching and wavelength routing while taking into account the limitations of current all optical technology in obs the user data is collected at the edge of the network, sorted based on destination address,and grouped into variable sized bursts prior to. This paper addresses the problem of routing optimization in optical burst switching obs networks. The basic idea underlying the development of an optical router is to decouple completely the data path from the control information header path. Control architecture in optical burstswitched wdm networks abstract.
Optical switching and networking vol 29, pages 164. The chapters are selfcontained with minimum overlap. Contention problem in optical burst switching find, read and cite all the research you need on researchgate. Explore optical burst switching with free download of seminar report and ppt in pdf and doc format. Turner, fellow,ieee, and pufan mo abstractoptical burst switching obs is an emerging technology that allows variable size data bursts to be transported directly over dense wavelength division multiplexing links. Optical packet switching and optical burst switching are still in the research phase. Alloptical internet may one day come true, due to the mplosive bandwidth requirement, and advances of enabling optical communication techniques. Optical burst switching seminar report, ppt, pdf for ece. We present the overall network protocol, enabling techniques, architec. The three authors examine and discuss all the challenges involved in the commercialization of optical switching.
Till date, the size of the burst cannot be estimated in advance, therefore, obs relies on the fact that arriving burst at any node will either be served or. Optical burst switching seminar report,ppt,pdf,doc. Congestion control strategy in optical burst switching. Obs optical burst switching 3,4 represents a balance between circuit and packet switching. Readers are brought up to date with the latest advances in research as well as the technological hurdles that researchers. The wavelength division multiplexing and subsequently optical burst switching networks have received a lot of attention on the research community in the recent years. The analytical result leads to a framework which provides guidelines for optical burst switched networks. Obs is viewed as a compromise between the yet unfeasible full optical packet switching ops and the mostly static optical circuit switching ocs.
Pdf on jan 1, 2008, kyriakos vlachos and others published optical burst switching. Qos control and performance improvement methods for. Switch architecture for optical burst switching networks. Then, this burst is transmitted without the need of any type of buffering at intermediate nodes. Optical burst switching is a promising solution for all optical wdm networks.
Box 12889, research triangle park, nc 27709 abstract we present a new switch architecture for optical. A study of burst aggregation techniques for ip traffic in optical burst switched networks scdt 2. Design and implementation of optical burst switching obs. Mems systems have moving parts, and the speed at which the mirror moves is limited. Node and network architecture for optical burst switching 15. Efficient channel scheduling algorithms in optical burst. Optical burst switching obs is a prospective networking technology that can carry mankind to the next generation information superhighways. Us7280478b2 control packet structure and method for. Optical burst switching seeks to reduce the cost and complexity of these systems by replacing much of this electronics with optical components.
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