Searching for authors named "Ioanis Nikolaidis" – sorted by Relevance.
12 documents found, showing 1 through 10.
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Time-parallel generation of self-similar ATM traffic
- …We present a time{parallel technique for the fast generation of self{similar tra c which is suitable for performance studies of Asynchronous Transfer Mode (ATM) networks. The technique is based on the well known result according to which the aggregation of a large number of heavy{tailed ON/OFF{ type…
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Tradeoffs of Implementing TCP Fairness Schemes
- …In this paper we consider two recently proposed schemes for the fair allocation of bandwidth in high speed networks carrying TCP tra#c: XCP and FairShare. We explain the di#erent design philosophies represented by each one and demonstrate through a set of simulations that FairShare, by making better…
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On the Advantages of Lifetime and RTT Classification Schemes for TCP Flows
- …We exploit the isolation of TCP flows based on their lifetime (classified as short- or long-lived flows) to eliminate the impact of long-lived flows on the short-lived, achieving improved response time for short-lived flows. An additional classification scheme provides large-grain separation of f…
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Active Queue Management and Global Fairness Objectives
- …We present an Active Queue Management policy and we study its ability to steer an entire TCP/IP network into global max--min fairness of its long--lived flows, in a totally distributed fashion. A previously proposed technique, initially applicable to circuit--switched networks and feedback--based…
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Trace-Adaptive Fragmentation for Periodic Broadcast of VBR Video
- …Periodic broadcast schemes have been proposed as a scalable solution for the implementation of Video--on-- Demand (VoD) systems. Efficient periodic broadcast schemes fragment each video into a number of segments assuming that the videos are encoded using Constant Bit Rate (CBR) coders. We focus inst…
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On minimum-energy broadcasting in all-wireless networks
- …We study the construction of the source-initiated (one-to-all) wireless broadcast tree to minimize the total required power for a given source node, a group of intended destination nodes and a given propagation constant, i.e., the power attenuation constant λ. The Minimum-Energy Broadcasting (MEB) p…
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Dynamic Bandwidth Allocation for Lifetime-Based TCP Classification
- …We study the separation of TCP flows into short lived and long lived ones, and the subsequent allocation of bandwidth to reflect the dynamically changing load due to short lived flow fluctuations.…
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Alternative Paths vs. Inaccurate Link State Information in Realistic Network Topologies
- …We propose a routing scheme in which connection requests with specific bandwidth demands can be assigned to one of several alternative paths connecting the source to the destination. The primary goal of this multiple-path routing approach is to compensate for the inaccuracy of the knowledge availabl…
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Multi-level Rate-based Flow Control for ABR Traffic
- …The rate control mechanism for Available-Bit-Rate (ABR) traffic as defined by the ATM Forum does not distinguish between different types of ABR connections. However, since ABR traffic may result from a heterogeneous set of applications, there is an apparent need for a flow control scheme that can di…
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Efficient Simulation of ATM Networks with Accurate End-to-End Delay Statistics
- …We present a technique to enable the efficient simulation of large scale ATM networks, while preserving the accuracy of the end-to-end delay statistics. Our approach uses on-the-fly aggregation by observing traffic at monitoring points, then substituting an aggregate model, when appropriate. We focu…
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