Ara es mostren els items 1-20 de 22

  • A comparison of different optimisation search methodologies for self-optimisation in wireless cellular networks 

    Sánchez González, Juan; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2013)
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    Self-Organising Networks (SON) concept is seen as a way to reduce costs by automating functionalities such as network optimisation usually performed manually with extensive human work time. This paper provides a general ...
  • 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)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    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 simple closed-form approximation for the packet loss rate of a TCP connection over wireless links 

    Mata Diaz, Jorge; Alins Delgado, Juan José; Muñoz Tapia, José Luis; Esparza Martín, Óscar (2014-09-15)
    Article
    Accés restringit per política de l'editorial
    This letter presents a new and simple model for a TCP flow experiencing random packet losses due to both transmission errors and congestion events. From this model, we will derive a straightforward expression of a unified ...
  • Brief announcement: Game theoretical approach for energy-delay balancing in distributed duty-cycled MAC protocols of wireless networks 

    Doudou, Messaoud; Barceló Ordinas, José María; Djenouri, Djamel; García Vidal, Jorge; Badache, Nadjib (Association for Computing Machinery (ACM), 2014)
    Text en actes de congrés
    Accés obert
    Optimizing energy consumption and end-to-end (e2e) packet delay in energy constrained distributed wireless networks is a conflicting multi-objective optimization problem. This paper investigates this trade-off from a ...
  • Contributions to TOA-based location with wlan 

    Ciurana Adell, Marc (Universitat Politècnica de Catalunya, 2010-07-15)
    Tesi
    Accés obert
    Location techniques that satisfy the requirements of advanced Location-Based Services (LBS) in environments where GPS fails are needed, therefore accurate indoor positioning is becoming increasingly important. This PhD ...
  • Design and analysis of medium access control protocols for ad hoc and cooperative wireless networks 

    Alonso Zárate, Jesús (Universitat Politècnica de Catalunya, 2009-02-25)
    Tesi
    Accés obert
    La presente tesis doctoral contribuye a la incesante evolución de las comunicaciones inalámbricas. Se centra en el diseño de protocolos de acceso al medio (MAC) para redes ad hoc y redes inalámbricas cooperativas. En una ...
  • Diseño e implementación de una estación meteorológica de bajo coste con conectividad a Internet 

    Fàbregas Bachs, Marc (Universitat Politècnica de Catalunya, 2016)
    Projecte/Treball Final de Carrera
    Accés obert
    The Internet of Things (IoT) is a new technological paradigm, which predicts in a near future billion of devices would be able to connect to Internet, opening a new set of services and applications that will enrich human ...
  • Distortion model for H.264/AVC sequences 

    Martínez García, Sara (Universitat Politècnica de Catalunya, 2010-05-04)
    Projecte Final de Màster Oficial
    Accés obert
  • Dynamic Buffer Size Allocation in Wireless Networks for Non-Elastic Traffic 

    Rumipamba Zambrano, Rubén Darío (Universitat Politècnica de Catalunya, 2014-01-08)
    Projecte Final de Màster Oficial
    Accés obert
    The dimensioning of the buffers in communication devices (routers and switches) is an important aspect to take into account since it affects some parameters of network performance such as: loss probability, end-to-end delay ...
  • Dynamic buffer sizing for wireless devices via maximum entropy 

    Vázquez Rodas, Andrés; Cruz Llopis, Luis Javier de la; Aguilar Igartua, Mónica; Sanvicente Gargallo, Emilio (2014-05-15)
    Article
    Accés restringit per política de l'editorial
    Buffer overflow is an important phenomenon in data networks that has much bearing on the overall network performance. Such overflow critically depends on the amount of storage space allotted to the transmission channels. ...
  • Energy saving potentials in the radio access through relaying in future networks 

    Pérez Romero, Jordi; Sallent Roig, José Oriol; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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    The progressive deployment of cell sites in wireless networks to deal with the massive demand of wireless services experienced in the last years has led to a huge increase in energy consumption and associated operational ...
  • Erlang capacity degradation in multi-access/multi-service wireless networks due to terminal/coverage restrictions 

    Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2008)
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    The benefits of jointly managing the combined radio resources offered by heterogeneous networks consisting of several Radio Access Technologies (RATs) have been profusely studied and assessed in recent years. Nevertheless, ...
  • Integració de xarxes MANET qMp en la comunitat Guifi·net 

    Florit López, Jorge Luis (Universitat Politècnica de Catalunya, 2014-01-24)
    Projecte/Treball Final de Carrera
    Accés obert
    Integració de xarxes de tipus MANET/Mesh amb el software del projecte qMp dins de la xarxa comunitària Guifi·net
  • Monitoring radiological incidents through an opportunistic network 

    Reyes Muñoz, María Angélica; Pastor Llorens, Enric; Gasull, Marti; Barrado Muxí, Cristina (2015-01-01)
    Article
    Accés obert
    In case of radiological incidents before to send a human team to the site would be better have real time information about the situation that rescue teams can find. In this paper we simulate an opportunistic network over ...
  • Network architecture and essential features for 5G: the SESAME project approach 

    Goratti, Leonardo; Costa, Cristina E.; Pérez Romero, Jordi; Sallent Roig, José Oriol; Ruiz, Cristina; Betzler, August; Sayyad Khodashenas, Pouria; Vahid, Seiamak; Nasr, Karim; Abubakar, Babangida; Whitehead, Alan; Belesioti, Maria; Chochliouros, Ioannis (Springer, 2016)
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    The outstanding and continuous growth of the request of mobile broadband Internet access is creating the unprecedented need to rethink most of the design paradigms of the mobile network. Such trend is accompanied by ...
  • Networking challenges and prospective impact of broadcast-oriented wireless networkson- chip 

    Abadal Cavallé, Sergi; Nemirovsky, Mario; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Association for Computing Machinery (ACM), 2015)
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    The cost of broadcast has been constraining the design of manycore processors and of the algorithms that run upon them. However, as on-chip RF technologies allow the design of small-footprint and high-bandwidth antennas ...
  • On the maximum performance in opportunistic routing 

    Cerdà Alabern, Llorenç; Darehshoorzadeh, Amir; Pla Boscà, Vicent (IEEE Computer Society Publications, 2010)
    Text en actes de congrés
    Accés obert
    In recent years there has been a growing interest in Opportunistic Routing as a way to increase the capacity of wireless networks by exploiting its broadcast nature. By contrast to traditional uni-path routing, in opportunistic ...
  • Performance evaluation of a cooperative scheme for wireless networks 

    Alonso Zárate, Jesús; Gómez, J; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2006-09-30)
    Comunicació de congrés
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    It has been shown that the cooperation among nodes can improve the performance of a network under certain considerations. So far, research focus has been mainly put on cooperation and not on the coordination required to ...
  • Pixel reconfigurable antennas: towards low-complexity full reconfiguration 

    Rodrigo López, Daniel; Romeu Robert, Jordi; Cetiner, Bedri Artug; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    The explosive growth of wireless communications has brought new requirements in terms of compactness, mobility and multi-functionality that make reconfigurable antennas excellent candidates for future wireless networks. ...
  • Saturation throughput analysis of a passive cluster-based medium access control protocol for ad hoc wireless networks 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Cateura Díaz, Alex; Alonso Zárate, Luis Gonzaga (2008)
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    Several clustering algorithms have been proposed during the last decade within the context of ad hoc and sensor networks. They allow adding some organization to an otherwise disorganized network. Although the virtual ...