Browsing by Subject "Xarxes d'àrea local sense fils (Xarxes d'ordinadors)"

Now showing items 1-20 of 72

  • A case of acquisition, transmission and use of information to control a manufacturing process 

    Fernández Román, Laura (Universitat Politècnica de Catalunya, 2009-10-08)
    Master thesis
    Open Access

  • A comparative analysis of the user behavior in academic WiFi networks 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco (Association for Computing Machinery (ACM), 2011)
    Conference lecture
    Restricted access - publisher's policy

  • A cross-layer energy-saving mechanism for an enhancement of 802.11 WLAN systems 

    Begoña, Otal; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2004)
    Conference lecture
    Restricted access - publisher's policy
    Most multiple access collision avoidance-based (MAC) protocols for WLAN systems have been using fixed transmission power and have not considered energy-saving techniques targeted on channel estimation models. In order to ...

  • A Fairness-Oriented Interference-Balancing Scheme for Cooperative Frequency Hopping Ad Hoc Networks 

    Pujol i Molist, Xavier (Universitat Politècnica de Catalunya, 2011-11-21)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Karlsruher Institut für Technologie
    English: It may quite frequently occur in an ad hoc network that the density of users in a given area becomes relatively high during some period of time. At the same time, network resource scheduling is not done regarding ...

  • Análisis de software de simulación de redes y estudio de configuración para prácticas docentes 

    Cervero Arago, Pau (Universitat Politècnica de Catalunya, 2015-09-29)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    In this document you will be able to find theoretical and practicing information about how to use GNS3, a network simulator software. This document also contains some lines about the previous concepts that users must know ...

  • 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)
    Conference lecture
    Restricted access - publisher's policy
    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 ...

  • A new medium access protocol based on distributed queues for a CDMA environment 

    Alonso Zárate, Luis Gonzaga; Agustí Comes, Ramon; Sallent Roig, José Oriol (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Conference report
    Restricted access - publisher's policy
    This paper presents and analyses a new stable near-optimum random access protocol. The proposed access scheme is adapted for being used in a CDMA environment. It is based on distributed queues and a collision resolution ...

  • A novel MAC protocol for dynamic ad hoc wireless networks with dynamic self-configurable master-slave architecture 

    Alonso Zárate, Jesús; Alonso Zárate, Luis Gonzaga (Suvisoft IEEE catalog number 04TH8754C, 2004)
    Conference lecture
    Restricted access - publisher's policy
    This paper proposes and analyses a novel MAC protocol for wireless ad hoc networks that makes use of distributed queues to achieve an efficient use of the radio channel. The protocol includes a dynamic self-configurable ...

  • A novel near-optimum medium acces control protocol for a distributed cooperative ARQ scheme in wireless networks 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2008-09-30)
    Conference lecture
    Restricted access - publisher's policy
    The distributed queuing MAC protocol for cooperative networks (DQCOOP) is presented in this paper as an innovative MAC protocol designed to coordinate the relay retransmissions in a cooperative automatic retransmission ...

  • Application of the DQCA protocol to the optimization of wireless communications systems in cellular environments 

    Cateura Díaz, Alejandro (Universitat Politècnica de Catalunya, 2007-04-16)
    Master thesis (pre-Bologna period)
    Open Access
    This final career thesis (Master thesis) is a contribution on the enhancement of wireless communications, specifically WLAN multi-cell systems based on the IEEE 802.11 standard. The objectives were to propose and study ...

  • A real-world implementation and parametrization of mobile ad-hoc networks 

    Villagrasa Batalla, Alexandra; Medina Medina, Esunly (Universitat Politècnica de Catalunya, 2008-10-16)
    Master thesis
    Restricted access - author's decision
    The concept of ad-hoc networking merges from the need of new applications for wireless computing technologies; which require temporary, dynamic and self-organized network topologies. Ad-hoc networks are a collection of ...

  • A reputation-based scheme for announcement messages in vehicular networks 

    Santos Amandi, Jaime (Universitat Politècnica de Catalunya, 2011-09-08)
    Master thesis
    Open Access
    English: Vehicular Ad-Hoc Networks (VANETs) are shaping up as the next step to provide information and safety services to vehicles. These networks are characterized for being variable in terms of connectivity and delay due ...

  • A Simulation Study on the Performance of Vehicular Communications Using a Realistic Channel Model 

    Tomás Ozalla, Daniel (Universitat Politècnica de Catalunya, 2016-04-15)
    Master thesis (pre-Bologna period)
    Open Access
    In this work we implement and study, through simulations, a state-of-the-art radio propagation model designed for vehicle-to-vehicle communications in Vehicular Ad Hoc Networks (VANET).

  • Authentication system deployment throughout protected access (UTM) for the Wireless Network in a hotel chain 

    Escolà Henke, Jean Miquel (Universitat Politècnica de Catalunya, 2011-10-08)
    Bachelor thesis
    Open Access
    A Hotel chain distributed over Europe wishes to provide wireless access to Internet for the hosted customers and offer an integral security through a Unified Threat Management ( UTM ) The project will consist; in one hand, ...

  • Avaluació experimental d'un protocol d'encaminament multicamí basat en AODV 

    Gonzálvez Lober, Rubén; Sánchez Colomé, Albert; Villagrasa Batalla, Alexandra (Universitat Politècnica de Catalunya, 2006-07-11)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Actualment les xarxes inalàmbriques, i en especial les xarxes ad-hoc (MANET), són un punt important d’investigació per part dels científics degut al gran ventall de camps a on poden ser aplicades. Encara que les MANETs suposin ...

  • Banco de pruebas para redes ad-hoc 

    Cavero Miranda, José; Sánchez Gómez, Francisco (Universitat Politècnica de Catalunya, 2011-12-20)
    Bachelor thesis
    Open Access
    Las redes ad-hoc son sistemas autónomos de redes temporales dinámicas formadas por un conjunto de nodos móviles inalámbricos, sin la intervención de puntos de acceso centralizados o de infraestructura de ningún tipo. En ...

  • Business scenarios, technical challenges and system requirements - D2.1 

    Ferrús Ferré, Ramón Antonio; Moreno, Oscar; Visiedo, David; Urdiales, Diego; Santiago, Miquel Angel; Gebert, Jens; Mouton, Christian; Lange, Christian; Merat, Vincent; Bender, Paul; Wich, Andreas; Agustí Comes, Ramon; Muck, Markus; Schmmidt, Andreas; Logothetis, Marios; Akezidou, Maria; Tzifa, Lia; Tsagkaris, Kostas; Stavroulaki, Vera; Demestichas, Panagiotis; Matinmikko, Marja; Mustonen, Miia; Sallent Roig, José Oriol; Pérez Romero, Jordi; Georgakopoulos, Andreas; Pecelj, Ilija; Boskovic, Dragan; Tosic, M.; Filo, Marcin; Piesiewicz, Radoslaw; Kritikou, Yiouli; Bantouna, Aimilia; Thomatos, Evangelos; Koutsouris, Nikos (2010-11)
    External research report
    Open Access

  • Cooperative Load Balancing in IEEE 802.11 Networks with Cell Breathing 

    García Villegas, Eduard; Vidal Ferré, Rafael; Paradells Aspas, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2008-07-06)
    Conference report
    Open Access
    IEEE 802.11 WLANs (Wi-Fi) are widely deployed for providing Internet access in public spaces, known as Hot Spots. In these scenarios, users tend to be "gregarious” and essentially static. Since association and roaming ...

  • Critpoanálisis práctico de WEP y WPA sobre WLAN 802.11 

    Hernández Chacón, Carlos (Universitat Politècnica de Catalunya, 2009-11-12)
    Bachelor thesis
    Open Access

  • Desarrollo y análisis de una red ad-hoc con sensores inalámbricos. 

    Amell Espulgas, Eulàlia; Vilarnau Salán, Anna (Universitat Politècnica de Catalunya, 2007-10-11)
    Master thesis (pre-Bologna period)
    Open Access
    Este proyecto presenta el planteamiento y desarrollo de un sistema para estudiar un entorno ambiental. Este sistema está formado por una red Ad-Hoc con sensores inalámbricos y una aplicación que procesa la información ...