Now showing items 1-20 of 44

  • 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 fast robust optimization-based heuristic for the deployment of green virtual network functions 

    Marotta, Antonio; Zola, Enrica Valeria; D'Andreagiovanni, Fabio; Kassler, Andreas (2017-10-01)
    Article
    Open Access
    Network Function Virtualization (NFV) has attracted a lot of attention in the telecommunication field because it allows to virtualize core-business network functions on top of a NFV Infrastructure. Typically, virtual network ...
  • 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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • 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)
    Conference report
    Restricted access - publisher's policy
    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 topic on simulation in telecommunications engineering 

    Barceló Arroyo, Francisco; Martín Escalona, Israel; Zola, Enrica Valeria (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • Comportamiento de los usuarios WLAN en el campus UPC de Barcelona 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco; López Ramírez, María (2009-09)
    Conference lecture
    Open Access
    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 ...
  • Discrete event simulation of wireless cellular networks 

    Zola, Enrica Valeria; Martín Escalona, Israel; Barceló Arroyo, Francisco (Sciyo.com, 2010-09)
    Part of book or chapter of book
    Open Access
  • Distribution of the frequency of connections in academic WLAN networks 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco (2012)
    Conference report
    Restricted access - publisher's policy
    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)
    Conference report
    Open Access
    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
    Open Access
    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 ...
  • DYMO self-forwarding: a simple way for reducing the routing overhead in MANETS 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco; Martín Escalona, Israel (HINDAWI, 2017-01-01)
    Article
    Open Access
    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 ...
  • Energy efficient line-of-sight millimeter wave small cell backhaul: 60, 70, 80 or 140 GHz? 

    Mesodiakaki, Agapi; Kassler, Andreas; Zola, Enrica Valeria; Ferndahl, Mattias; Cai, Tao (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    Spectrum scarcity together with high capacity demands make the use of millimeter wave (mmWave) frequencies an interesting alternative for next generation, i.e., fifth generation (5G), networks. Although mmWave is expected ...
  • Energy efficient virtual machine consolidation under uncertain input parameters for Green Data Centers 

    Zola, Enrica Valeria; Kassler, Andreas (2015)
    Conference report
    Restricted access - publisher's policy
    Reducing the energy consumption of data centers and the Cloud is very important in order to lower CO_2 footprint and operational cost (OPEX) of a Cloud operator. To this extent, it becomes crucial to minimise the energy ...
  • Expected bit rate for terminals moving according to the random waypoint model in a WLAN cell 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco; Kassler, Andreas; Dely, Peter (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference lecture
    Restricted access - publisher's policy
    The IEEE 802.11 standard defines the different bit rates and modulation schemes to which a WLAN device may adapt according to the channel quality. User mobility may also have an impact on the available bit rate. This paper ...
  • Final primavera 2018 

    Gómez Montenegro, Carlos; López Aguilera, M. Elena; Zola, Enrica Valeria (Universitat Politècnica de Catalunya, 2018-06-11)
    Exam
    Restricted access to the UPC academic community
  • Final tardor 218 

    Gómez Montenegro, Carlos; López Aguilera, M. Elena; Zola, Enrica Valeria (Universitat Politècnica de Catalunya, 2019-01-16)
    Exam
    Restricted access to the UPC academic community
  • Impact of mobility models on the cell residence time in WLAN networks 

    Zola, Enrica Valeria; Barceló Arroyo, Francisco (2009-03)
    Conference report
    Restricted access - publisher's policy
    Several mobility models are available for simulating WLAN, with different impacts on network performance. This work deals with the impact of the assumed mobility model on two key teletraffic variables involved in the ...
  • Impact of the range and geometry estimation in the accuracy of the passive TDOA algorithm 

    Martín Escalona, Israel; Barceló Arroyo, Francisco; Zola, Enrica Valeria (2012)
    Conference lecture
    Restricted access - publisher's policy
    The positioning ability is essential in mobile networks. Providing the position of entities is in general a complex task that becomes especially hard in ad hoc networks. In these networks, the topology cannot be planned ...
  • Impact of unreliable positioning in location-based routing protocols for MANETs 

    Martín Escalona, Israel; Perrone, Fabio; Zola, Enrica Valeria; Barceló Arroyo, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    MANETs have been focusing the interest of researchers for several years. The new scenarios where MANETs are being deployed make that several challenging issues remain open: node scalability, energy efficiency, network ...