The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
La technologie d’accès par superposition peut compenser le problème de sous-utilisation du spectre en exploitant les capacités des radios cognitives. La conception MAC est un aspect important de la recherche sur Overlay Access. Dans cet article, nous présentons l'environnement d'accès par superposition et les défis qu'il pose à la conception MAC. Ensuite, nous proposons l’utilisation d’une fonction de coordination distribuée modifiée comme protocole MAC pour les réseaux d’accès par superposition distribués. Le DCF intermittent qui en résulte fonctionne avec robustesse dans l'environnement exigeant d'accès par superposition, caractérisé par de fréquentes interruptions de la procédure de balayage du spectre et de faibles taux de transmission atteignables. Le modèle de chaîne de Markov DCF le plus récent est étendu afin d'inclure les modifications des opérations de superposition. Notre extension concerne le calcul des attentes de durée des slots qui, dans l'environnement overlay, n'ont pas de valeurs constantes mais dépendent des paramètres de fonctionnement de l'overlay. À l'aide du modèle analytique, nous évaluons les performances du DCF sous l'effet de certains paramètres d'accès à l'overlay. Les prédictions du nouveau modèle analytique sont validées par des simulations et capturent avec précision de nombreuses caractéristiques intéressantes de l’opération de superposition. Notre modèle peut être utilisé dans des études de faisabilité de scénarios de superposition réalistes et dans des algorithmes de contrôle d'admission de réseaux d'accès à superposition distribués compatibles QoS qui engagent le DCF intermittent.
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Athanassios V. ADAMIS, Konstantinos N. MALIATSOS, Philip CONSTANTINOU, "Throughput and Packet Delay Analysis of the Intermittent DCF for Overlay Access Networks" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 11, pp. 3448-3458, November 2009, doi: 10.1587/transcom.E92.B.3448.
Abstract: Overlay Access Technology can compensate for the spectrum underutilization problem by exploiting Cognitive Radios capabilities. MAC design is an important aspect of Overlay Access research. In this paper we present the overlay access environment and the challenges it poses to MAC design. Then, we propose the use of a modified Distributed Coordination Function as the MAC protocol for distributed Overlay Access networks. The resulted Intermittent DCF performs with robustness in the demanding overlay access environment, which is characterized by frequent spectrum scan procedure interruptions and low achievable transmission rates. The most recent DCF Markov Chain Model is extended in order to include the overlay operation modifications. Our extension concerns the slot duration expectations calculation which, in the overlay environment, have not constant values but depend on overlay operation parameters. Using the analytical model we evaluate the performance of the DCF under the effect of certain overlay access parameters. The new analytical model predictions are validated with simulations, and are found to accurately capture many interesting features of the overlay operation. Our model can be used in feasibility studies of realistic overlay scenarios and in admission control algorithms of QoS enabled distributed overlay access networks that engage the Intermittent DCF.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.3448/_p
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@ARTICLE{e92-b_11_3448,
author={Athanassios V. ADAMIS, Konstantinos N. MALIATSOS, Philip CONSTANTINOU, },
journal={IEICE TRANSACTIONS on Communications},
title={Throughput and Packet Delay Analysis of the Intermittent DCF for Overlay Access Networks},
year={2009},
volume={E92-B},
number={11},
pages={3448-3458},
abstract={Overlay Access Technology can compensate for the spectrum underutilization problem by exploiting Cognitive Radios capabilities. MAC design is an important aspect of Overlay Access research. In this paper we present the overlay access environment and the challenges it poses to MAC design. Then, we propose the use of a modified Distributed Coordination Function as the MAC protocol for distributed Overlay Access networks. The resulted Intermittent DCF performs with robustness in the demanding overlay access environment, which is characterized by frequent spectrum scan procedure interruptions and low achievable transmission rates. The most recent DCF Markov Chain Model is extended in order to include the overlay operation modifications. Our extension concerns the slot duration expectations calculation which, in the overlay environment, have not constant values but depend on overlay operation parameters. Using the analytical model we evaluate the performance of the DCF under the effect of certain overlay access parameters. The new analytical model predictions are validated with simulations, and are found to accurately capture many interesting features of the overlay operation. Our model can be used in feasibility studies of realistic overlay scenarios and in admission control algorithms of QoS enabled distributed overlay access networks that engage the Intermittent DCF.},
keywords={},
doi={10.1587/transcom.E92.B.3448},
ISSN={1745-1345},
month={November},}
Copier
TY - JOUR
TI - Throughput and Packet Delay Analysis of the Intermittent DCF for Overlay Access Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 3448
EP - 3458
AU - Athanassios V. ADAMIS
AU - Konstantinos N. MALIATSOS
AU - Philip CONSTANTINOU
PY - 2009
DO - 10.1587/transcom.E92.B.3448
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2009
AB - Overlay Access Technology can compensate for the spectrum underutilization problem by exploiting Cognitive Radios capabilities. MAC design is an important aspect of Overlay Access research. In this paper we present the overlay access environment and the challenges it poses to MAC design. Then, we propose the use of a modified Distributed Coordination Function as the MAC protocol for distributed Overlay Access networks. The resulted Intermittent DCF performs with robustness in the demanding overlay access environment, which is characterized by frequent spectrum scan procedure interruptions and low achievable transmission rates. The most recent DCF Markov Chain Model is extended in order to include the overlay operation modifications. Our extension concerns the slot duration expectations calculation which, in the overlay environment, have not constant values but depend on overlay operation parameters. Using the analytical model we evaluate the performance of the DCF under the effect of certain overlay access parameters. The new analytical model predictions are validated with simulations, and are found to accurately capture many interesting features of the overlay operation. Our model can be used in feasibility studies of realistic overlay scenarios and in admission control algorithms of QoS enabled distributed overlay access networks that engage the Intermittent DCF.
ER -