Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Queue management"”.
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TCP performance enhancement in wireless networks via adaptive congestion control and active queue management
… of adaptive congestion control and active queue management. By end-to-end, it means a solution with no requirement of routers being "wireless-aware" or "wireless-specific". TCP-Jersey has been introduced as an implementation of the proposed solution framework, and its performance metrics …
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Some Active Queue Management Methods for Controlling Packet Queueing Delay. Design and Performance Evaluation of Some New Versions of Active Queue Management Schemes for Controlling Packet Queueing Delay in a Buffer to Satisfy Quality of Service Requirements for Real-time Multimedia Applications.
… In this thesis three existing Active Queue Management (AQM) mechanisms are modified by incorporating into these a control function to condition routers for better Quality of Service (QoS). Specifically, delay is considered as the key QoS metric as it is the most important metric for …
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Performance modeling of congestion control and resource allocation under heterogeneous network traffic. Modeling and analysis of active queue management mechanism in the presence of poisson and bursty traffic arrival processes.
… to varying application scenarios. Active Queue Management (AQM) is a promising scheme to support end-to-end Transmission Control Protocol (TCP) congestion control because it enables the sender to react appropriately to the real network situation. Analytical performance models are powerful …
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A Framework for Designing a Low-Loss, Low-Delay Internet
Finally, we present a simple Active Queue Management scheme that we call the Adaptive Virtual Queue (AVQ) algorithm and provide design rules for selecting its parameters. We also provide a simple implementation of the AVQ scheme using a token-bucket formulation, which can be implemented with a few …
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Enhancing TCP traffic flow performance with a proportional and integral rate controller: Theory, design, and performance evaluation
… of RED and some other related AQM (Active Queue Management) techniques developed in recent years. That is to avoid unnecessary packet losses and stabilize the queue length in the router. It can also prevent the throughput reduction in the presence of wireless links. We proved the stability …
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Solver for TCP flows in a network
… key factors such as packets discarding rate, queueing delay and the throughput of a bottleneck buffer. A network designer needs to predict these parameters in order to dimension a network properly. This thesis developed a solver for predicting the stability of a TCP network when servers …
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Deterministic Fluid Models for Internet Congestion Control
… the impact of parameter choice of an AQM (active queue management) scheme that can be used at the router. We argue that, depending upon the choice of the parameters of the AQM scheme, one would obtain a rate-based model or a rate-and-queue-based model as the deterministic limit of a stochastic …
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Dynamic Signal Coordination Models for a Network With Oversaturated Intersections
… disutility function is introduced to account for queue accumulation along coordinated arterials. None of the existing signal coordination algorithms can effectively deal with a network of oversaturated intersections. The proposed model contributes to this gap. A variety of queue management …
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Scan Iceland - Vᛟlva : Architecture and Implementation of a Continuous National Network Scanner
… includes distributed scanning workers, robust queue management, encrypted data storage, and a public-facing website that displays anonymised trends. Völva also generates automated reports to inform stakeholders, enabling proactive cybersecurity awareness. Designed for scalability and …
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Novel algorithms for fair bandwidth sharing on counter rotating rings
… standardization process, weighted fairness and queue management schemes were proposed to be used in the standard. As shown in this dissertation, these schemes can be applied to solve the fairness issues noted widely in the research community as radical changes are not practical to introduce …
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Design and implementation of a system for aggregate internet traffic control
… benefit from applying different scheduling and queue management policies to their traffic. However, they currently lack control over the queues that build up at the bottleneck links in the network to effectively enforce desired policies. To address this issue, we propose a new kind of middlebox, …
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Performance evaluation of active network-based unicast and multicast congestion control protocols
… We integrate, run and test the novel active queue management called Random Early Marking (REM) over an AN-based unicast congestion controlled network called Active Congestion Control Transmission Control Protocol. (ACC TCP). It can be concluded that the implementation of an ANs paradigm is …
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An End User QoS View of Buffer Sizing and Bandwidth Sharing Protocols
… to be high end user QoS. While studying queue management, we show that a flow-size aware smart scheduler at each router can significantly improve the overall flow completion times. We study the problem of sizing router buffers and show some pitfalls in some of the recent claims, which …
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A conceptual framework for using feedback control within adaptive traffic control systems
… OPAC) to enable better demand estimations and queue management during oversaturated condition. A numerical example is provided to test the performance of an arterial in a feedback environment. The example involves the design and simulation test of Proportional (P) and Proportional-Integral (P1) …
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Modeling and control of airport departure processes for emissions reduction
… taxi-out time, the time spent in the departure queue, and the congestion delay due to ramp and taxiway interactions. The dependence of the taxi-out time on these factors is analyzed and modeled. The performance of the model is validated through a comparison of its predictions with observed data …
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Gestão estratégica de filas: o caso da unidade INSS/Bancários
This work it is a study on Strategic Management of queues and was held at the INSS agency /Bank. Has the overall aim of examining how the INSS is managing waiting queues for service to its customers and the specific objectives for: describe the current queue management model of the organization, …
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Estimating current and future benefits of airport surface congestion management techniques
… congestion at airports is surface congestion management (SCM) (also commonly called departure queue management or departure metering). The concept generally involves holding aircraft at the gate or in the ramp area instead of releasing them onto the active movement area during periods of high …
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Router-based algorithms for improving internet quality of service.
… the positive system model, a novel, stateless, queue management scheme is designed: Multi-Level Comparisons with index l (MLC(l)). In the limit, MLC(l) enforces max-min fairness in a network of TCP flows. We go further, showing that counting past drops at a congested link provides su±cient …
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Performance modelling and analysis of congestion control mechanisms for communication networks with quality of service constraints. An investigation into new methods of controlling congestion and mean delay in communication networks with both short range dependent and long range dependent traffic.
Active Queue Management (AQM) schemes are used for ensuring the Quality of Service (QoS) in telecommunication networks. However, they are sensitive to parameter settings and have weaknesses in detecting and controlling congestion under dynamically changing network situations. Another drawback for …
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Data Bandwidth Reduction Techniques For Distributed Embedded Simulatio
… be enhanced by an additional 6% by improving the queue management. A low run-time overhead, self-adapting storage policy called the Smart Priority Queue (SPQ) was developed and evaluated within the Concurrent Model. The proposed SPQ policies employ a lowcomplexity linear queue for near head …
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