Literatura científica selecionada sobre o tema "Contrôle de congestion (télécommunications) – Modèles mathématiques"
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Artigos de revistas sobre o assunto "Contrôle de congestion (télécommunications) – Modèles mathématiques"
Bissel, Chris C. "Models and « black boxes » : Mathematics as an enabling technology in the history of communications and control engineering / Modèles et « boites noires » : Les mathématiques comme technologie constitutive dans l'histoire des télécommunications et de l'ingénierie de contrôle". Revue d'histoire des sciences 57, n.º 2 (2004): 305–38. http://dx.doi.org/10.3406/rhs.2004.2215.
Texto completo da fonteTeses / dissertações sobre o assunto "Contrôle de congestion (télécommunications) – Modèles mathématiques"
Chatté, Fabien. "Contribution au contrôle de congestion dans les protocoles de transport". Compiègne, 2004. http://www.theses.fr/2004COMP1514.
Texto completo da fonteLn this PhD thesis manuscript, we begin by presenting a panorama of different congestion control techniques implemented in unicast transport protocols. Next, we present a study in which we try to define the validity limits of the fluid approximation of a packets switched network. After, we describe and justify the development (in the continuous time domain) of a controller, which is used to compensate the sending rate of network sources in order to avoid congestions. Once the controller developed, we discretize it in order to implement it in a transport protocol. To objectively compare our congestion control mechanism to the existing ones, we define a comparison methodology. This methodology allows to evaluate performance of congestion control mechanisms. At the end, we compare the performance of our protocol with those of several existing transport protocols. This comparison allows us to analyse in several cases, the behaviour of the tested protocols
Makarem, Nabil. "Performance evaluation and improvement of congestion control of the constrained application protocol for the Internet-of-things". Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS289.
Texto completo da fonteThe Constrained Application Protocol (CoAP) is a lightweight core protocol designed by the Internet Engineering Task Force (IETF) used for communication between devices in the Internet of Things (IoT). In this research work, we propose new exact mathematical models to analyze the performance of CoAP in lossy IoT networks. This study provides insights about improving CoAP congestion control in such networks and highlights the properties -- including the limitations -- of CoAP. Besides, we show that the simple control mechanism reduces significantly CoAP performance especially in terms of bandwidth utilization since it prevents the protocol from acting efficiently during congestion periods. We then propose new improvements in order to enhance the trade-off between reliability and goodput while keeping the algorithms reasonably simple for constrained devices. First, we optimize further the estimation procedure of the retransmission timeout in order to enhance congestion detection. Timeouts are the only indicator used in CoAP to detect losses, and losses are used as a strong indicator to detect congestion. Second, we replace the backoff algorithm by "real" congestion control algorithms inspired from the well-known Additive Increase Multiplicative Decrease technique and a recent measurement-based congestion control called BBR. Our analysis using both our simulator and Contiki/Cooja environment show that the rate-based approach outperforms the backoff-based approach. Moreover, all the results show that our algorithms achieve a much better tradeoff between goodput, reliability and overhead
Abboud, Khodor. "Conception et évaluation d'un modèle adaptatif pour la qualité de service dans les réseaux MPLS". Phd thesis, Ecole Centrale de Lille, 2010. http://tel.archives-ouvertes.fr/tel-00590422.
Texto completo da fonteRichard, Olivier. "Régulation court terme du trafic aérien et optimisation combinatoire : application de la méthode de génération de colonnes". Phd thesis, Grenoble INPG, 2007. http://tel.archives-ouvertes.fr/tel-00580414.
Texto completo da fonteLivros sobre o assunto "Contrôle de congestion (télécommunications) – Modèles mathématiques"
The Mathematics of Internet Congestion Control (Systems & Control: Foundations & Applications). Birkhäuser Boston, 2003.
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