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Tesis sobre el tema "Asynchronous transfer mode"

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Publicado: 4 de junio de 2021

Última modificación: 30 de julio de 2024

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1

Shankaran, Rajan, University of Western Sydney y School of Computing and Information Technology. "Asynchronous transfer mode security". THESIS_XXX_CIT_Shankaran_R.xml, 1999. http://handle.uws.edu.au:8081/1959.7/252.

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There is a growing interest in the development of broadband services and networks for commercial use in both local area and wide area networks. The primary reasons for this is a pressing need to meet the demand for increased bandwidth for remote sites interconnection, and in high speed data transfer of bulk data such as images etc. There has also been a significant change in the characteristics of network traffic. It is increasingly taking the form of bursty traffic characterized by an unpredictable demand for bandwidth of several megabytes. A new generation of networking technologies have emerged to meet the demand of growing and uncertain bandwidth requirements. One such technology is called Asynchronous Transfer Mode (ATM) for use on broadband networks under the banner of broadband ISDN. ATM enables interconnection at high speeds in the range of Mbit/s or Gbit/s over wide areas, which effectively moves the bottleneck from networks to end systems. Furthermore, the user is able to access bandwidth on demand and the user is only charged for the bandwidth actually used. As more and more information (audio, image and data) is transferred over ATM networks, security issues are becoming increasingly critical. The rapidly growing use of the Internet to transfer confidential and sensitive information only enhances the importance of security services. One may even argue that the success of ATM will be determined not by its cost effectiveness but also to the level of trust that can be placed on its performance, security and availability. The objective of this dissertation is to address the issues involved in the design of security services for ATM networks.
Master of Science (Hons)

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2

Shankaran, Rajan. "Asynchronous transfer mode security". Thesis, View thesis, 1999. http://handle.uws.edu.au:8081/1959.7/252.

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There is a growing interest in the development of broadband services and networks for commercial use in both local area and wide area networks. The primary reasons for this is a pressing need to meet the demand for increased bandwidth for remote sites interconnection, and in high speed data transfer of bulk data such as images etc. There has also been a significant change in the characteristics of network traffic. It is increasingly taking the form of bursty traffic characterized by an unpredictable demand for bandwidth of several megabytes. A new generation of networking technologies have emerged to meet the demand of growing and uncertain bandwidth requirements. One such technology is called Asynchronous Transfer Mode (ATM) for use on broadband networks under the banner of broadband ISDN. ATM enables interconnection at high speeds in the range of Mbit/s or Gbit/s over wide areas, which effectively moves the bottleneck from networks to end systems. Furthermore, the user is able to access bandwidth on demand and the user is only charged for the bandwidth actually used. As more and more information (audio, image and data) is transferred over ATM networks, security issues are becoming increasingly critical. The rapidly growing use of the Internet to transfer confidential and sensitive information only enhances the importance of security services. One may even argue that the success of ATM will be determined not by its cost effectiveness but also to the level of trust that can be placed on its performance, security and availability. The objective of this dissertation is to address the issues involved in the design of security services for ATM networks.

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3

Shankaran, Rajan. "Asynchronous transfer mode security /". View thesis, 1999. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030616.142410/index.html.

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Thesis (M. Sc.) (Hons.) -- University of Western Sydney, Nepean, 1999.
Thesis submitted in fulfilment of the requirements for the award of the degree Master of Science (Honors) from the University of Western Sydney, Nepean, School of Computing and Information Technology. Bibliography : p. 87-88.

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4

Hachfi, Fakhreddine Mohamed. "Future of asynchronous transfer mode networking". CSUSB ScholarWorks, 2004. https://scholarworks.lib.csusb.edu/etd-project/2639.

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The growth of Asynchronous Transfer Mode (ATM) was considered to be the ideal carrier of the high bandwidth applications like video on demand and multimedia e-learning. ATM emerged commercially in the beginning of the 1990's. It was designed to provide a different quality of service at a speed up 100 Gbps for both real time and non real time application. The turn of the 90's saw a variety of technologies being developed. This project analyzes these technologies, compares them to the Asynchronous Transfer Mode and assesses the future of ATM.

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5

Doar, John Matthew Simon. "Multicast in the asynchronous transfer mode environment". Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241604.

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6

Harris, Carol, Michele Mascari, Kevin Rice, Jeff Smith y John Steedman. "ASYNCHRONOUS TRANSFER MODE (ATM) CONVERSION DEVICE (ACD)". International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607525.

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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The Asynchronous Transfer Mode (ATM) Conversion Device (ACD) System is based on state-of-the-art ATM technology. The system interfaces between high-rate ECL/RS-422 raw data bitstreams and Synchronous Optical Network (SONET) OC-3 fiber. The SONET OC-3 interface uses ATM Adaptation Layer Type Five (AAL5) format. The system exceeds its 50 Mbps raw data, single stream requirement and provides single stream raw data throughput at rates up to 75 Mbps. With ATM and SONET packaging overhead, this translates into 90 Mbps on the OC-3 fiber. In addition to high-rate throughput, the system provides multiplexing and demultiplexing of multiple stream throughput based on the ATM cell header Virtual Path and Virtual Channel Identifier (VPI/VCI) values. The system is designed with the flexibility to provide between three and six throughput channels. All of which are multiplexed/demultiplexed to and from the same OC-3 interface. Multiple stream cumulative raw data throughput rates of up to 80 Mbps, or 96 Mbps on the fiber, have successfully run.

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7

Van, Luinen Steven M. "Lossless statistical data service over Asynchronous Transfer Mode". Curtin University of Technology, Australian Telecommunications Research Institute, 1999. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=9898.

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Asynchronous Transfer Mode (ATM) can provide deterministic channels as required for real time signals, as well as statistical multiplexing. For this reason, ATM has been chosen as the underlying technology for providing a Broadband Integrated Services Digital Network (B-ISDN). Two main classes of services are expected to be supported over a B-ISDN. These classes are real-time services and data services. Data services include computer communications (Local Area Network (LAN) interconnections) and general non-real time traffic, such as file transfer and small transactions.The provision of data services over ATM are better served with statistical multiplexing, provided that the service is loss-free. For multiplexing to be loss-free and still statistical, while the maximum service rate is fixed, the multiplexer tributaries must be controlled in flow, to assure no overflow of the multiplexing buffer. Provision of a service over ATM is accomplished by an ATM layer. Transfer Capability (ATC).This thesis investigates and reports on the operating characteristics of an ATM layer Transfer Capability proposed to the International Telecommunications Union (ITU), and called Controlled Cell Transfer (CCT). CCT uses credit window based flow control on links and a quota based control in switches, and will give loss free statistical multiplexing for data. Other ITU defined ATCs are examined in regard to data service provision and compared with CCT. It is found that only CCT can provide a fast and at the same time efficient data service.The thesis also examines the impact that support of the CCT capability would have on an ATM switch, through determination of required functionality, and mapping of the required functions into a switch design. Finally, an architecture and implementation of an ATM switch is described that would support the CCT as well as the Deterministic Bit Rate (DBR) ++
transfer capability, and would provide efficient data and real-time services.

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8

Eslinger, Brian y Joleen McCombe. "Range Communications System Using Asynchronous Transfer Mode (ATM)". International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/609653.

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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California
As aircraft become more complex and require more resources over larger areas, the challenge of the test ranges is to provide economical solutions to move telemetry data from the test article to the data processing facility. Edwards AFB is in the process of upgrading the ground transmission facilities to transport data including telemetry using Asynchronous Transfer Mode (ATM). This paper documents the challenge of supporting telemetry over ATM, different approaches that are available, the benefits of using ATM, and discussion of candidate hardware options. The effort at Edwards include the linking of the major range facilities over a fiber optic backbone and links to other major test ranges in the Southwest Range Complex via microwave. The fiber optic backbone is expected to be OC-12c (622 Mbps) ATM supporting new capabilities as well as all of the legacy systems. The backbone system will be designed so that migration to OC-48 is possible without service disruption. The microwave links are multiple DS-3 capable. Some of these DS-3s may support legacy systems, but the ability to link ranges using ATM is expected simultaneously.

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9

Cheng, Heng Seng. "Enhancement of asynchronous transfer mode over satellite links". Thesis, University of Aberdeen, 1998. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU106658.

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This thesis is a study on the issues involved in implementing asynchronous transfer mode (ATM) over satellite links and the ways in which ATM can be optimised to achieve better performance over such links. The main issue is the impact of errors introduced by the satellite links on the performance of ATM. Options to improve the performance of ATM over SATCOM have been identified and they are: (i) increase transmit power, (ii) FEC, (iii) adoption of an alternative ATM architecture, (iv) extensive to commercial-off-the-shelf (COTS) ATM equipments and (v) construction of ATM protocol enhancers. The fifth option which uses a combination of protocol conversions and error control techniques is preferred over the others as it allows maximum use of standard COTS ATM equipments and provides a framework for experimentation with multiple versions of ATM equipments (that are evolving rapidly). As part of the strategy of using protocol enhancement to improve the performance of ATM, two techniques have been proposed. The first technique is called cell header duplication, and it improves cell loss ratio by compressing the information in the cell headers and using the extra room in each header to carry the duplicate compressed header information of the previous cell. When a cell header is corrupted, the corrupted header information is replaced with the duplicate copy carried in the next cell, provided that too is not corrupted. This technique was compared with cell header interleaving and error tolerant addressing which are cell header protection techniques proposed by others. The second technique is called selective cell retransmission, which employs a partial retransmission (hybrid) ARO strategy to perform error recovery for only the individually errored non-realtime cells allowing it to achieve higher reliability of data transfer and more efficient utilisation of satellite bandwidth. The overhead in the proposed scheme varies according to the error conditions in the satellite channel making it an adaptive system. This is achieved by using a unique method of sending error erasure information (inserted into cells carrying negative acknowledgement messages) from the receiver to the transmitter which will use this information to pin-point the corrupted cells. The scheme is also compared with concatenated coding (using a Reed-Solomon code) and link protocols (using selective repeat (full retransmission) ARQ).

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10

van, Luinen Steven M. "Lossless statistical data service over Asynchronous Transfer Mode". Thesis, Curtin University, 1999. http://hdl.handle.net/20.500.11937/1608.

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Asynchronous Transfer Mode (ATM) can provide deterministic channels as required for real time signals, as well as statistical multiplexing. For this reason, ATM has been chosen as the underlying technology for providing a Broadband Integrated Services Digital Network (B-ISDN). Two main classes of services are expected to be supported over a B-ISDN. These classes are real-time services and data services. Data services include computer communications (Local Area Network (LAN) interconnections) and general non-real time traffic, such as file transfer and small transactions.The provision of data services over ATM are better served with statistical multiplexing, provided that the service is loss-free. For multiplexing to be loss-free and still statistical, while the maximum service rate is fixed, the multiplexer tributaries must be controlled in flow, to assure no overflow of the multiplexing buffer. Provision of a service over ATM is accomplished by an ATM layer. Transfer Capability (ATC).This thesis investigates and reports on the operating characteristics of an ATM layer Transfer Capability proposed to the International Telecommunications Union (ITU), and called Controlled Cell Transfer (CCT). CCT uses credit window based flow control on links and a quota based control in switches, and will give loss free statistical multiplexing for data. Other ITU defined ATCs are examined in regard to data service provision and compared with CCT. It is found that only CCT can provide a fast and at the same time efficient data service.The thesis also examines the impact that support of the CCT capability would have on an ATM switch, through determination of required functionality, and mapping of the required functions into a switch design. Finally, an architecture and implementation of an ATM switch is described that would support the CCT as well as the Deterministic Bit Rate (DBR) transfer capability, and would provide efficient data and real-time services.

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11

Kadirire, James. "Dynamic multicast routing in the asynchronous transfer mode environment". Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318069.

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12

Almulhem, Abdulaziz S. "Error correction techniques for ATM communications". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0009/NQ36627.pdf.

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13

Zhang, Runcheng. "Simulation study of network performance on the North Carolina information highway ATM network". Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/9126.

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14

Talman, Kathy Bischoff. "Asynchronous transfer mode traffic characterization on the vistanet gigabit network". Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/8296.

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15

Lemanski, Michael J. Benton Jesse C. "Simulation for Smartnet scheduling of asynchronous transfer mode virtual channels /". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA333481.

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16

Pitts, Jonathan Michael. "Cell-rate simulation modelling of asynchronous transfer mode telecommunications networks". Thesis, Queen Mary, University of London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319746.

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17

Lemanski, Michael J. y Jesse C. Benton. "Simulation for Smartnet scheduling of asynchronous transfer mode virtual channels". Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8961.

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Approved for public release; Distribution is unlimited
Critical to the success of all future battlefield commanders is the rapid retrieval of relevant, time sensitive information. Some of this information will be available locally while the remainder is stored in the United States. DARPA's Battlefield Awareness and Data Dissemination (BADD) program attempts to deliver heterogeneous data to the battlefield using Asynchronous Transfer Mode (ATM) protocol. ATM was originally designed to implement dynamic virtual channels over duplex, high-speed, high capacity fiber optic cabling. The problem addressed was to determine which algorithm best schedules calls on BADD's ATM network that uses static virtual channels over simplex, error prone, long delay, satellite links. Because the BADD project uses ATM in such an unusual way, and because of the need to determine a schedule for transmissions over the heterogeneous static channels, we modeled BADD using the state-of-the-art network simulation tool, Optimized Network Engineering Tools (OPNET). We determined several modifications that must be made to existing network simulators to allow them to model next-generation networks. Our simulation shows that a greedy algorithm yields a 53% decrease in the overall completion time and a 46% increase in average bit throughput over FIFO scheduling

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18

Eslinger, Brian y Joleen McCombe. "TELEMETRY TRANSMISSION USING INVERSE MULTIPLEXING AND ASYNCHRONOUS TRANSFER MODE (ATM)". International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607391.

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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The growing need to transmit larger telemetry streams from the receiving site to the processor location over greater distances is requiring newer and more creative techniques. This paper reports efforts to use Asynchronous Transfer Mode (ATM) technology and inverse multiplexing to provide an economical system to interface telemetry streams into the public network for reliable transmission. Cost savings are available immediately for programs that are willing to meet the synchronization criteria today. Lab testing has shown the feasibility of using cost efficient techniques for data transmission. This document describes the investigation that is currently underway that could provide a significant change to the way telemetry data is transmitted from receiver sites to data processing sites. Instead of using dedicated lines with dedicated bandwidth regardless of the program being supported, the approach that has been tested in a lab environment would allow the dynamic allocation of bandwidth using ATM over a variety of carrier services. The combination of ATM and inverse multiplexing allows telemetry data rates above 1.5 Megabits per second (Mbps) to be transmitted over multiple T1 (1.544 Mbps) lines. Previously, the only choice when data rates exceeded 1.5 Mbps was to use an entire DS-3 (45 Mbps). Now it is possible to transmit intermediate sized data rates (1.5 to 8 Mbps) by bonding multiple T1s to provide the desired data throughput.

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19

Niswander, Dan A. "An Assessment of Asynchronous Transfer Mode (ATM) Training for Educators". NSUWorks, 1996. http://nsuworks.nova.edu/gscis_etd/751.

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The purpose of this dissertation was to develop and evaluate a hypertext-based training tutorial/guide on asynchronous transfer mode (ATM) technology for use by school district educators and technology planners. A review of literature indicated training needs on new broadband technologies were not being adequately met from the point of view of an educational environment. An interactive hypertext solution was proposed, designed, and developed based on the needs of adult learners. An analysis of these needs indicated adults prefer flexibility in navigating between training topics as well as in the pace of material presentation, that is, whether to proceed at a faster or slower pace based on their personal preference, not the pace selected by an instructor. Interactive hypertext was found to support these specific needs. The procedures followed in this study included the selection of an appropriate authoring system, development of the tutorial/guide on ATM technology based on a structured methodology that focused on hypertext development, and an evaluation of the tutorial/guide. This evaluation included measuring its learning effectiveness through the use of pretests and posttests as well as an evaluation of the population's preferences, attitudes, and opinions toward this type of learning (hypertext-based) as measured by a comparison of precourse and post course surveys. A case-study research approach was proposed. The results, as evaluated by a comparison of mean scores, indicated that there was a statistically significant higher mean score on the topic mastery posttest than on the pretest when the hypertext-based tutorial was given to each participant. Furthermore, the preferences toward this type training also increased significantly as measured by the comparison of means of the precourse and postcourse preference surveys.

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20

Erimli, Bahadir McEliece Robert J. McEliece Robert J. "Switching algorithms and buffer management in asynchronous transfer mode networks /". Diss., Pasadena, Calif. : California Institute of Technology, 1996. http://resolver.caltech.edu/CaltechETD:etd-12122007-145855.

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21

Bates, Juliet. "The optimum interface for voice over ATM". Thesis, Brunel University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341663.

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22

Johnson, Robert. "MAC protocol performance for ATM cells over a SuperPON". Thesis, Manchester Metropolitan University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266831.

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23

Crosby, Simon Andrew. "Performance management in ATM networks". Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285357.

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24

Miller, W. "The design and application of power line carrier communication and remote meter reading for use in integrated services and broadband-integrated services digital networks". Thesis, Open University, 1997. http://oro.open.ac.uk/57707/.

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25

Fan, Zhong. "Some aspects of traffic control and performance evaluation of ATM networks". Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4768/.

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The emerging high-speed Asynchronous Transfer Mode (ATM) networks are expected to integrate through statistical multiplexing large numbers of traffic sources having a broad range of statistical characteristics and different Quality of Service (QOS) requirements. To achieve high utilisation of network resources while maintaining the QOS, efficient traffic management strategies have to be developed. This thesis considers the problem of traffic control for ATM networks. The thesis studies the application of neural networks to various ATM traffic control issues such as feedback congestion control, traffic characterization, bandwidth estimation, and Call Admission Control (CAC). A novel adaptive congestion control approach based on a neural network that uses reinforcement learning is developed. It is shown that the neural controller is very effective in providing general QOS control. A Finite Impulse Response (FIR) neural network is proposed to adaptively predict the traffic arrival process by learning the relationship between the past and future traffic variations. On the basis of this prediction, a feedback flow control scheme at input access nodes of the network is presented. Simulation results demonstrate significant performance improvement over conventional control mechanisms. In addition, an accurate yet computationally efficient approach to effective bandwidth estimation for multiplexed connections is investigated. In this method, a feed forward neural network is employed to model the nonlinear relationship between the effective bandwidth and the traffic situations and a QOS measure. Applications of this approach to admission control, bandwidth allocation and dynamic routing are also discussed. A detailed investigation has indicated that CAC schemes based on effective bandwidth approximation can be very conservative and prevent optimal use of network resources. A modified effective bandwidth CAC approach is therefore proposed to overcome the drawback of conventional methods. Considering statistical multiplexing between traffic sources, we directly calculate the effective bandwidth of the aggregate traffic which is modelled by a two-state Markov modulated Poisson process via matching four important statistics. We use the theory of large deviations to provide a unified description of effective bandwidths for various traffic sources and the associated ATM multiplexer queueing performance approximations, illustrating their strengths and limitations. In addition, a more accurate estimation method for ATM QOS parameters based on the Bahadur-Rao theorem is proposed, which is a refinement of the original effective bandwidth approximation and can lead to higher link utilisation.

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26

Gao, Chengwei. "Priority statistical multiplexing and two-level congestion control for video transmission over ATM networks /". Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/5889.

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27

Goyal, Rohit. "Traffic management for TCP/IP over Asynchronous Transfer Mode (ATM) networks /". The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488188894438013.

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28

Zavialov, Alexander. "Distributed failure restoration for asynchronous transfer mode (ATM) tactical communication networks". Thesis, De Montfort University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.699808.

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29

Carney, Cameron P. y Tony L. Ellis. "Transition to asynchronous transfer mode (ATM) an implementation model for NPS software metrics lab". Thesis, Monterey, California ; Naval Postgraduate School, 1999. http://hdl.handle.net/10945/13586.

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With Asynchronous Transfer Mode (ATM), we are experiencing the emergence of a network technology that has the potential of satisfying the requirement for a worldwide standard to allow interoperability of information, regardless of the hosts or type of information. Historically ATM has been advertised as a Wide Area Network (WAN) technology. Recently, we have seen ATM take on more applications in the local area environment competing with the standard LAN technology, Ethernet. With its ability to accommodate the simultaneous transmission of data, voice. and video. ATM could potentially create a seamless network based on one standard. As a switched-based technology, some of the benefits provided by ATM are dedicated bandwidth per connection, higher aggregate bandwidth, flexible access speeds, reduced network bandwidth cost. reduced network access costs, reduced equipment cost and commitment, and improved management and flexibility. We provide a discussion of the ATM standard an evaluation of the SML's LAN architecture, and propose three ATM implementation models using the SML that NPS could employ to provide ITM students with practical experience and exposure to this technology. Each model outlines the specifications (i.e. hardware and software) required for implementation.

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30

Tenruh, Mahmut. "Extending Controller Area Networks : CAN/CAN cut-through bridging, CAN over ATM, and CAN based ATM FieldBus". Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340796.

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31

Stipidis, Elias. "ATM networks : traffic control, interworking with CAN, and end station NIC architecture". Thesis, University of Sussex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263208.

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32

Gdanski, Gregory T. "Applying asynchronous transfer mode to the Marine Corps Base level information infrastructure". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA365143.

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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, June 1999.
"June 1999". Thesis advisor(s): William J. Haga, John Osmundson. Includes bibliographical references (p. 41). Also avaliable online.

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33

Johnson, Timothy Douglas. "Connection level priority/pre-emption service for asynchronous transfer mode communication networks". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22768.pdf.

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34

Farid, Weam Mohamed. "RAMSIS, a novel multimedia synchronization scheme for asynchronous transfer mode (ATM) networks". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ31571.pdf.

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35

Watson, Scott Douglas. "Low and variable bit-rate speech coding for asynchronous transfer mode networks". Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367239.

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36

Kirwin, John P. "Asynchronous transfer mode and Local Area Network emulation standards, protocols, and security implications". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA375842.

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Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, December 1999.
"December 1999". Thesis advisor(s): John McEachen. Includes bibliographical references (p. 125). Also available online.

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37

COELHO, ROSANGELA FERNANDES. "CONGESTION CONTROL FOR BROADLAND INTEGRATED SWITCHED DIGITAL SYSTEMS USING THE ASYNCHRONOUS TRANSFER MODE". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1991. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9377@1.

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EMPRESA BRASILEIRA DE TELECOMUNICAÇÕES
A Rede Digital de serviços Integrados - Faixa Larga (RDSI- FL) caracteriza-se pela flexibilidade de integração de diversas fontes de tráfego tais como voz, dados e vídeo. Neste trabalho estudamos o controle de congestionamento nesta rede. Através de simulação das fontes de tráfego e de seu comportamento na rede, foi possível a exploração do ganho da multiplexação estatística alcançado principalmente pela utilização do Modo de Transferência Assíncrono (MTA). Apresentamos as fases que compreendem o controle de congestionamento e obtivemos resultados de Alocação de largura de banda para alguns tipos de fontes assim como resultados comparativos de critérios de Admissão com resultado de simulação. A largura de banda a ser alocada é utilizada na fase de controle de admissão para a decisão da aceitação de uma nova chamada. Apresentamos ainda, um simulador da fonte variável (vídeo) necessário em todas as análises.
Broadbend Integrated Services Digital Networks (B-ISDN) are characterized by their flexibility of integrating a variety of traffic sources such as, voice, data and video. Congestion control of these networks is studied in this work. Through simulation of traffic sources, it have been possible to explore statistical multiplexing gain reached by the Asynchronous Tranfer Mode (ATM) utilization. We present the congetion control phases and results concerning the Bandwidth Allocation and Admission Control phases. The Bandwidth Allocation is used by the Admission control to decide a new call acceptance. We also present, the simulation results concerning the Bandwidth Allocation for each traffic source and a comparison between some admission criteria proposed in the literature and simulation results.

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38

Ors, Tolga. "Traffic and congestion control for ATM over satellite to provide QoS". Thesis, University of Surrey, 1998. http://epubs.surrey.ac.uk/843458/.

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In broadband multimedia satellite networks it is necessary to multiplex bursty streams of traffic with differing Quality of Service (QoS) requirements to maximise the utilisation of the satellite link bandwidth. Providing the desired QoS of each service, in a multi-service environment is a major challenge for satellite networks. Asynchronous Transfer Mode (ATM) which provides hard QoS guarantees is suitable for a multi-service satellite environment. ATM has been developed as a vehicle for multimedia communications and is widely regarded as one of the most important and fastest-growing communications technology of this decade. The design of suitable traffic and congestion control algorithms is one of the most important challenge for the success of an ATM-based satellite network. This thesis develops and optimises a traffic and congestion control mechanism which can provide users the required QoS for ATM over satellite networks. In order to provide QoS differentiation for end-to-end communication it is proposed to use both loss and delay priorities, which are determined form the required Cell Loss Rate (CLR) and Cell Transfer Delay (CTD) parameters, for each service class. A multiple shared buffer scheduling (MSBS) policy considering both delay and loss priorities, is proposed and evaluated for scheduling and discarding of ATM cells. It is shown that both the CTD and CLR requirements of ATM services can be met by the MSBS scheme. A combined preventive/reactive control scheme incorporating an adaptive Leaky Bucket (LB) is investigated for the satellite environment. It has been found that reactive control improves the cell loss due to congestion for time scales larger than the propagation delay. As the satellite air interface bandwidth is currently one of the most expensive commodities in the service provision, an adaptive MAC protocol that can support the ATM service classes whilst maximising the bandwidth utilisation, is proposed and evaluated. The mapping of ATM service classes to MAC classes and the use of a prioritised request queue provides the QoS differentiation required by ATM networks. It is shown that a pure reservation system performs poorly for very bursty user traffic. The user population which can be supported using Random Access (RA) for very bursty users with short burst duration is higher. The system throughput can be maximised, by making this protocol adaptive to changing traffic characteristics. It is shown that the utilisation of the frame capacity and the total number of users served can be improved by using this protocol.

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39

Joe, Inwhee. "Error control for wireless ATM networks". Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15643.

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40

Crepin-Leblond, Olivier Marie James. "Reduction of delay in ATM multiplexers". Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266067.

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41

Wyman, Richard Hayden. "Bit-plane differential EZW for the compression of video for available bit-rate channels". Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313533.

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42

Warde, Walid. "An investigation into alternatives for high performance ATM switching systems". Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284964.

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43

Hernandez, Joaquin Garcia. "Management of the quality of video services in ATM networks". Thesis, University of Essex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284604.

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44

Seferidis, Vassilis Emmanuel. "Video coding for ATM networks". Thesis, University of Essex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333486.

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45

Redey, Akos Laszlo. "A novel routing strategy for public wide area ATM networks". Thesis, De Montfort University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391340.

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46

Jordan, T. P. "Design and analysis of routing algorithms for ATM networks". Thesis, De Montfort University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391028.

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47

Che, Hao. "Measurement-based traffic modeling and network resource management /". Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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48

Dutkiewicz, Eryk. "Connection admission control in ATM networks /". Title page, abstract and contents only, 1991. http://web4.library.adelaide.edu.au/theses/09SM/09smd976.pdf.

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49

Sekercioglu, Ahmet y ahmet@hyperion ctie monash edu au. "Fuzzy logic control techniques and structures for Asynchronous Transfer Mode (ATM) based multimedia networks". Swinburne University of Technology, 1999. http://adt.lib.swin.edu.au./public/adt-VSWT20050411.130014.

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The research presented in this thesis aims to demonstrate that fuzzy logic is a useful tool for developing mechanisms for controlling traffc flow in ATM based multimedia networks to maintain quality of service (QoS) requirements and maximize resource utilization. The study first proposes a hierarchical, multilevel control structure for ATM networks to exploit the reported strengths of fuzzy logic at various control levels. Then, an extensive development and evaluation is presented for a subset of the proposed control architecture at the congestion control level. An ATM based multimedia network must have quite sophisticated traffc control capabilities to effectively handle the requirements of a dynamically varying mixture of voice, video and data services while meeting the required levels of performance. Feedback control techniques have an essential role for the effective and efficient management of the resources of ATM networks. However, development of conventional feedback control techniques relies on the availability of analytical system models. The characteristics of ATM networks and the complexity of service requirements cause the analytical modeling to be very difficult, if not impossible. The lack of realistic dynamic explicit models leads to substantial problems in developing control solutions for B-ISDN networks. This limits the ability of conventional techniques to directly address the control objectives for ATM networks. In the literature, several connection admission and congestion control methods for B-ISDN networks have been reported, and these have achieved mixed success. Usually they either assume heavily simplified models, or they are too complicated to implement, mainly derived using probabilistic (steady-state) models. Fuzzy logic controllers, on the other hand, have been applied successfully to the task of controlling systems for which analytical models are not easily obtainable. Fuzzy logic control is a knowledge-based control strategy that can be utilized when an explicit model of a system is not available or, the model itself, if available, is highly complex and nonlinear. In this case, the problem of control system design is based on qualitative and/or empirically acquired knowledge regarding the operation of the system. Representation of qualitative or empirically acquired knowledge in a fuzzy logic controller is achieved by linguistic expressions in the form of fuzzy relational equations. By using fuzzy relational equations, classifications related to system parameters can be derived without explicit description. The thesis presents a new predictive congestion control scheme, Fuzzy Explicit Rate Marking (FERM), which aims to avoid congestion, and by doing so minimize the cell losses, attain high server utilization, and maintain the fair use of links. The performance of the FERM scheme is extremely competitive with that of control schemes developed using traditional methods over a considerable period of time. The results of the study demonstrate that fuzzy logic control is a highly effective design tool for this type of problems, relative to the traditional methods. When controlled systems are highly nonlinear and complex, it keeps the human insight alive and accessible at the lower levels of the control hierarchy, and so higher levels can be built on this understanding. Additionally, the FERM scheme has been extended to adaptively tune (A-FERM) so that continuous automatic tuning of the parameters can be achieved, and thus be more adaptive to system changes leading to better utilization of network bandwidth. This achieves a level of robustness that is not exhibited by other congestion control schemes reported in the literature. In this work, the focus is on ATM networks rather than IP based networks. For historical reasons, and due to fundamental philosophical differences in the (earlier) approach to congestion control, the research for control of TCP/IP and ATM based networks proceeded separately. However, some convergence between them has recently become evident. In the TCP/IP literature proposals have appeared on active queue management in routers, and Explicit Congestion Notication (ECN) for IP. It is reasonably expected that, the algorithms developed in this study will be applicable to IP based multimedia networks as well.

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50

Bates, Stephen. "Traffic characterisation and modelling for call admission control schemes on asynchronous transfer mode networks". Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/1373.

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Allocating resources to variable bitrate (VBR) teletraffic sources is not a trivial task because the impact of such sources on a buffered switch is difficult to predict. This problem has repercussions for call admission control (CAC) on asynchronous transfer mode (ATM) networks. In this thesis we report on investigations into the nature of several types of VBR teletraffic. The purpose of these investigations is to identify parameters of the traffic that may assist in the development of CAC algorithms. As such we concentrate on the correlation structure and marginal distribution; the two aspects of a teletraffic source that affect its behaviour through a buffered switch. The investigations into the correlation structure consider whether VBR video is selfsimilar or non-stationary. This question is significant as the exponent of self-similarity has been identified as being useful for characterising VBR teletraffic. Although results are inconclusive with regards to the original question, they do show that self-similar models are best able to capture the video data's behaviour. The investigations into the marginal distributions are in two parts. The first considers applying a structured Markovian model to ATM data and demonstrates how model parameters can be estimated from measurable properties of teletraffic data. This has implications for parametric CAC. The second part considers the use of stable distributions in teletraffic characterisation and modelling. We show that several teletraffic datasets are heavy tailed and then develop a framework for the estimation of stable distribution parameters. We finish by considering the effective bandwidths of stable distributions and models and by considering the effect of stable parameters on model behaviour. This is done in an attempt to develop a CAC algorithm based on the paradigms of self-similarity and stable distributions.

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