Title:
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Dynamic Buffer Size Allocation in Wireless Networks for Non-Elastic Traffic; Asignación Dinámica de Buffer en Redes Inalámbricas para Tráfico no Elástico; Assignació Dinàmica de Buffer en Xarxes Sense Fils per Trànsit no Elàstic
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Author:
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Rumipamba Zambrano, Rubén Darío
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica; Cruz Llopis, Luis Javier de la |
Abstract:
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Calidad de servicio en redes inalámbricas mediante un dimensionado dinámico del tamaño de los buffer. |
Abstract:
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The dimensioning of the buffers in communication devices (routers and switches) is an important aspect to take into account since it affects some parameters of network performance such as: loss probability, end-to-end delay as well as transmission channels utilization, etc. The properly solution to dynamic buffer size allocation is based on maximum entropy. This mechanism proposes the network devices become able to dynamically self-configure their buffer sizes guaranteeing a specific packet loss probability with the minimum buffer size. With this solution, the bufferbloat effect is minimizing, which introduces unnecessary excessive delays to the users caused by the over-dimensioning of the buffer size. Also, it allows optimizing the memory utilization, which could be very beneficial in network devices with multiple interfaces. This work implements the dynamic buffer size allocation solution based on maximum entropy in shared channels such as the Wireless LAN (WLAN) and Wireless Mesh Networks (WMN). It is demonstrated the efficient operation of the dynamic mechanism through measured performance and operation parameters. In the networks WLAN and WMN, the algorithm has been evaluated with default mechanisms for medium access channel: DCF (Distributed Coordination Function) and EDCAF (Enhanced Distributed Channel Access Function) respectively. For EDCAF, two classes of service have been taking into account. |
Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Informàtica teòrica -Queuing theory -Wireless LANs -Buffer sizing -Wireless networks -Packet loss -Maximum entropy -Queuing systems -Dimensionamiento de buffers -Redes Inalámbricas -Pérdida de paquetes -Máxima entropía -Sistema de colas -Cues, Teoria de -Xarxes locals sense fil Wi-Fi -- Aplicacions |
Rights:
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S'autoritza la difusió de l'obra mitjançant la llicència Creative Commons o similar 'Reconeixement-NoComercial- SenseObraDerivada'
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Research/Master Thesis |
Published by:
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Universitat Politècnica de Catalunya
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