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

Now showing items 1-20 of 75

    • 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 ...

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

      Alonso Zárate, Luis Gonzaga; Agustí Comes, Ramon; Sallent Roig, 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 ...

    • 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).

    • Agricultural monitoring by means of wireless sensor network for large fields within the Internet of Things (IoT) paradigm 

      Gordillo Padilla, Freddy Xavier (Universitat Politècnica de Catalunya, 2022-09-05)
      Master thesis
      Restricted access - confidentiality agreement
      Nowadays, the need to use smart devices with connectivity to information clouds is more common, both for control and for receiving information through sensors, for which there are a variety of technical solutions depending ...

    • 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 ...

    • 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 ...

    • 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, 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)
      Research report
      Open Access

    • Certificate status information distribution and validation in vehicular networks 

      Hernández Gañán, Carlos (Universitat Politècnica de Catalunya, 2013-09-04)
      Doctoral thesis
      Open Access
      Vehicular ad hoc networks (VANETs) are emerging as an functional technology for providing a wide range of applications to vehicles and passengers. Ensuring secure functioning is one of the prerequisites for deploying ...

    • Contribución al diseño de protocolos de encaminamiento en redes móviles ad-hoc basados en reputación 

      Guaya Delgado, Lenin (Universitat Politècnica de Catalunya, 2019-06-13)
      Doctoral thesis
      Open Access
      The mobile ad-hoc networks are part of the next generation access networks (Next Generation Networking o NGN), "all-IP" networks facing the great scientific and technical challenge that is the ubiquitous computing The ...