Ara es mostren els items 1-20 de 64

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

    Zola, Enrica Valeria; Barceló Arroyo, Francisco (Association for Computing Machinery (ACM), 2011)
    Comunicació de congrés
    Accés restringit per política de l'editorial
  • A field study on satellite and cellular 

    Gete-Alonso Roldan, Oscar; Martín Escalona, Israel; Barceló Arroyo, Francisco (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This article presents a statistical study on the availability of location sources. In particular, it rates the availability of cellular network base stations and GPS satellites in urban scenarios. Individual and joint ...
  • A field study on the fusion of terrestrial and satellite location methods in urban cellular networks 

    Barceló Arroyo, Francisco; Martín Escalona, Israel; Manente, Cyrille (2010-05-01)
    Article
    Accés restringit per política de l'editorial
    This work studies the improvement in service coverage obtained by three different approaches to combining two triangulation (terrestrial and satellite) location methods for cellular networks in an urban environment. The ...
  • A modification of DYMO routing protocol with knowledge of nodes’ position: proposal and evaluation 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco; Martín Escalona, Israel (Springer, 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Knowledge of the physical location of the nodes is known to improve performance in wireless networks. This is especially true in MANETs, where routing protocols face a continuously changing topology. In the past, routing ...
  • An engineering approximation for the mean waiting time in the M/H2b/s queue 

    Barceló Arroyo, Francisco (INOC, 2003-10-27)
    Text en actes de congrés
    Accés obert
    Although the exact solution for the mean waiting time in the M/H2/s queue exists, it requires advanced programming skills and processing capacity. In most engineering problems the offered traffic and its features are known ...
  • A New CAC Policy Based on Traffic Characterization in Cellular Networks 

    Vassileva Vesselinova, Natalia; Barceló Arroyo, Francisco (Springer, 2008-05)
    Text en actes de congrés
    Accés obert
    The Call Admission Control (CAC) method presented in this paper is based on the statistical properties of the network’s traffic variables. It probabilistically estimates the time until the release of a seized channel: the ...
  • A ranging method with IEEE 802.11 data frames for indoor localization 

    Ciurana Adell, Marc; Barceló Arroyo, Francisco; Izquierdo Moreno, Fernán (IEEE, 2007-03-15)
    Comunicació de congrés
    Accés obert
    IEEE 802.11 networks constitute a suitable infrastructure for accurate indoor positioning. However, existing approaches based on fingerprinting present drawbacks that make them not suitable for most of applications. This ...
  • A software platform for measuring distances through round trip time in IEEE 802.11 

    Martín Escalona, Israel; Barceló Arroyo, Francisco; Zola, Enrica Valeria (IEEE Computer Society Publications, 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Indoor positioning has focused the interest of researchers for years. Although there are several techniques proposed, they are difficult to reproduce and consequently to contrast and improve. This paper presents a modular ...
  • A survey of routing protocols for energy constrained ad hoc wireless networks 

    Vassileva Vesselinova, Natalia; Barceló Arroyo, Francisco (IEEE, 2007-12)
    Text en actes de congrés
    Accés obert
    In this survey we review energy-aware routing protocols for wireless multihop ad hoc networks and critically discuss the main results in this area. The classification presented is in no case unique but summarizes the chief ...
  • A topic on simulation in telecommunications engineering 

    Barceló Arroyo, Francisco; Martín Escalona, Israel; Zola, Enrica Valeria (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Topics on network simulation are often offered as elective topics or short seminars of programs on computer sciences and telecommunications engineering. In other programs simulation is offered as part of a general core ...
  • Channel Holding Time Distribution in Public Cellular Telephony 

    Barceló Arroyo, Francisco; Jordán, Javier (Elsevier Science B.V., 1999-06)
    Comunicació de congrés
    Accés obert
    This paper examines the channel holding time of public cellular telephony systems. This is the time that the Mobile Station (MS) remains in the same cell, a fraction of the call holding time. The study is based on actual ...
  • Chapter 4: Mobility Support 

    Barceló Arroyo, Francisco; Aguayo-Torres, M.C.; Al Begain, K.; Martín Escalona, Israel; Vassilou, V. (SPRINGER-VERLAG., 2009)
    Capítol de llibre
    Accés restringit per política de l'editorial
    Wireless access allows independency between the user’s position and the physical bearer used to access services from the network. However, this independency does not imply that wireless networks show a full ability to cope ...
  • Collaborative positioning in ad hoc networks using passive time-differences of arrival 

    Martín Escalona, Israel; Barceló Arroyo, Francisco; Zola, Enrica Valeria; Ciurana Adell, Marc (Bentham Science Publishers, 2015-04-08)
    Article
    Accés restringit per política de l'editorial
    Accuracy and scalability contribute to the quality of location solutions in wireless networks. While accuracy is a parameter addressed in all location technologies, scalability is often relegated. However, scalability ...
  • Comparative performance evaluation of IEEE 802.11v for positioning with time of arrival 

    Ciurana Adell, Marc; Barceló Arroyo, Francisco; Martín Escalona, Israel (2011-03)
    Article
    Accés restringit per política de l'editorial
    Time of Arrival (TOA) based techniques are expected to overcome performance limitations of existing WLAN positioning approaches. The upcoming IEEE 802.11v standard is expected to play a key role because it will include new ...
  • Comportamiento de los usuarios WLAN en el campus UPC de Barcelona 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco; López Ramírez, María (2009-09)
    Comunicació de congrés
    Accés obert
    A través del proyecto Education Roaming (eduroam), muchas universidades europeas permiten que sus usuarios puedan desplazarse entre ellas, disponiendo en todo momento de los servicios móviles igual que estuviesen en su ...
  • Coverage of Hybrid Terrestrial-Satellite Location in Mobile Communications 

    Barceló Arroyo, Francisco; Martín Escalona, Israel (VDE, 2004-02)
    Text en actes de congrés
    Accés obert
    This work studies the improvement in service coverage obtained by three different ways of hybridising (terrestrial and satellite) triangulation location methods for cellular networks. Though the authors assume that ...
  • Discrete event simulation of wireless cellular networks 

    Zola, Enrica Valeria; Martín Escalona, Israel; Barceló Arroyo, Francisco (Sciyo.com, 2010-09)
    Capítol de llibre
    Accés obert
  • Distribution of the frequency of connections in academic WLAN networks 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Understanding the trends in the use of wireless local area networks (WLANs) (i.e., how much, when and where traffic is present) is an important issue for modeling the network and for optimizing the allocated resources. ...
  • DYMO routing protocol with knowledge of nodes’ position 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco (2012)
    Text en actes de congrés
    Accés obert
    We present a system that selects the optimal route between two points for vehicles moving in an urban environment. Our approach uses location data gathered from smartphones, which includes route segments and their corresponding ...
  • DYMO self forwarding: a simple way for reducing the routing overhead in MANETs 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco; Martín Escalona, Israel (HINDAWI, 2017-04)
    Article
    Accés obert
    Current routing protocols in Mobile Ad hoc Networks tend to use information on the position of the nodes in order to improve their features. In fact, without this information, protocols are hardly scalable since they tend ...