Exploració per tema "Queueing theory"

Ara es mostren els items 1-16 de 16

    • A conflict-free memory banking architecture for fast VOQ packet buffers 

      García Vidal, Jorge; Cerdà Alabern, Llorenç; Corbal San Adrián, Jesús; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2003)
      Text en actes de congrés
      Accés obert
      In order to support the enormous growth of the Internet, innovative research in every router subsystem is needed. We focus our attention on packet buffer design for routers supporting high-speed line rates. More specifically, ...

    • A logistic queue model for network traffic modeling and simulation 

      Coltraro, Franco (Universitat Politècnica de Catalunya, 2017-07)
      Projecte Final de Màster Oficial
      Accés obert
      In this work we present a continuous queuing model called the logistic queue model. We show that in terms of queue size and outflow prediction, our model is as precise as a discrete event simulator with the additional ...

    • A near-optimum MAC protocol based on the distributed queueing random access protocol (DQRAP) for a CDMA mobile communication system 

      Alonso Zárate, Luis Gonzaga; Agustí Comes, Ramon; Sallent Roig, Oriol (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-09)
      Article
      Accés obert
      This paper presents and analyzes a new near-optimum medium access control (MAC) protocol. The proposed access scheme is suitable for a CDMA mobile communication environment, and keeps under control and upper bounded the ...

    • A near-optimum mac protocol based on the distributed queueing random access protocol (dqrap) for a cdma mobile communication system 

      Alonso Zárate, Luis Gonzaga; Agustí Comes, Ramon; Sallent Roig, Oriol (2000-09)
      Article
      Accés obert
      This paper presents and analyses a new near– optimum random access protocol. The proposed access scheme is suitable for a CDMA environment and minimises the total number of spreading codes needed to achieve a certain ...

    • Active queue management as quality of service enabler for 5G networks 

      Irazabal Bengoa, Mikel; López Aguilera, M. Elena; Demirkol, Ilker Seyfettin (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés obert
      5G is envisioned as the key technology for guaranteeing low-latency wireless services. Packets will be marked with QoS Flow Indicators (QFI) for different forwarding treatment. 3GPP defines the end-to-end delay limits, but ...

    • Análisis de un mecanismo de ahorro de energía mediante lógica fuzzy para la mejora de sistemas WLAN 802.11 

      Otal, B; Alonso Zárate, Luis Gonzaga (Univ. Jaen, 2004)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      La mayoría de los protocolos de acceso al medio, los llamados protocolos MAC (Medium Access Control), para sistemas WLAN (Wireless Local Area Network), fijan una potencia de transmisión constante sin considerar técnicas ...

    • Contention-based nonminimal adaptive routing in high-radix networks 

      Fuentes Sáez, Pablo; Vallejo, Enrique; García, Marina; Beivide Palacio, Julio Ramón; Rodríguez, Germán; Minkenberg, Cyriel; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      Adaptive routing is an efficient congestion avoidance mechanism for modern Datacenter and HPC networks. Congestion detection traditionally relies on the occupancy of the router queues. However, this approach can hinder ...

    • Dynamic cluster resizing 

      González González, José; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2003)
      Text en actes de congrés
      Accés obert
      Processor resources required for an effective execution of an application vary across different sections. We propose to take advantage of clustering to turn-off resources that do not contribute to improve performance. ...

    • Evaluación de sistemas de líneas de transporte público urbano por simulación. 

      Calderón Mulero, Nerea (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2020-09)
      Treball Final de Grau
      Accés obert
      [cast] Este trabajo desarrolla un modelo de simulación para un conjunto de líneas de transporte público basado en una secuencia de cadenas de Markov conectadas entre sí. Este modelo de simulación es capaz de reproducir las ...

    • Mean waiting time in the M/H2/s queue: application to mobile communications Systems 

      Barceló Arroyo, Francisco; Paradells Aspas, Josep; Aguilar Igartua, Mónica (Wissenschaft & Technik, 1997)
      Comunicació de congrés
      Accés obert
      In this paper a procedure to approximately calculate the mean waiting time in the M/H2/s queue is presented. The approximation is heuristic although based in the intuitive symmetry between the deterministic and balanced ...

    • Multiuser MAC protocols for 802.11n wireless networks 

      Kartsakli, Elli; Zorba Barah, Nizar; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2009)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The emerging 802.11n standard establishes the integration of MIMO technology in WLANs with the goal of achieving high data rates. However there are still many open issues regarding MAC protocol design for MIMO based systems, ...

    • On the design of hybrid DRAM/SRAM memory schemes for fast packet buffers 

      García Vidal, Jorge; March Hermo, María Isabel; Cerdà Alabern, Llorenç; Corbal San Adrián, Jesús; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2004)
      Text en actes de congrés
      Accés obert
      We address the design of a packet buffer for future high-speed routers that support line rates as high as OC-3072 (160 Gb/s), and a high number of ports and service classes. We describe a general design for hybrid DRAM/SRAM ...

    • Software directed issue queue power reduction 

      Jones, Timothy M.; O’Boyle, Michael F.P.; Abella Ferrer, Jaume; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2005)
      Text en actes de congrés
      Accés obert
      The issue logic of a superscalar processor dissipates a large amount of static and dynamic power. Furthermore, its power density makes it a hot-spot requiring expensive cooling systems and additional packaging. In this ...

    • The M/D/C queue with priority: application to trunked mobile radio systems 

      Barceló Arroyo, Francisco; Casares Giner, Vicente; Paradells Aspas, Josep (IEE, 1996-08)
      Article
      Accés restringit per política de l'editorial
      A procedure is presented for estimating the mean waiting time in an M/D/C queue with two levels of nonpre-emptive priority. The approximation gives a maximum relative error of 10% for heavy load and is greater than the ...

    • Up-link performance of the DQRUMA MAC protocol in a realistic indoor environment for W-ATM networks 

      Verikoukis, Christos; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      This paper evaluates by simulation the performance of the distributed queuing request update multiple access (DQRUMA) MAC protocol in a realistic indoor environment. This protocol has been simulated in conjunction with a ...

    • WLAN throughput improvement via distributed queuing MAC 

      Alonso Zárate, Luis Gonzaga; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-04)
      Article
      Accés obert
      This paper analyzes the performance of a MAC scheme for wireless local area networks (WLANs) that makes use of distributed queues to improve radio channel utilization. Analytical values for the maximum throughput performance ...