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  • Energy Efficient Cooperative Node Management for Wireless Multimedia Sensor Networks  Open access

     Alaei, Mohammad
    Defense's date: 2013-06-27
    Department of Computer Architecture, Universitat Politècnica de Catalunya
    Theses

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    In Wireless Multimedia Sensor Networks (WMSNs) the lifetime of battery operated visual nodes is limited by their energy consumption, which is proportional to the energy required for sensing, processing, and transmitting the data. The energy consumed in multimedia sensor nodes is much more than in the scalar sensors; a multimedia sensor captures images or acoustic signals containing a huge amount of data while in the scalar sensors a scalar value is measured (e.g., temperature). On the other hand, given the large amount of data generated by the visual nodes, both processing and transmitting image data are quite costly in terms of energy in comparison with other types of sensor networks. Accordingly, energy efficiency and prolongation of the network lifetime has become a key challenge in design and implementation of WMSNs. Clustering in sensor networks provides energy conservation, network scalability, topology stability, reducing overhead and also allows data aggregation and cooperation in data sensing and processing. Wireless Multimedia Sensor Networks (WMSNs) are characterized for directional sensing, the Field of View (FoV), in contrast to scalar sensors in which the sensing area usually is uniform and non-directional. Therefore, clustering and the other coverage-based techniques designed for WSNs, do not satisfy WMSNs. In WMSNs, sensor management policies are needed to assure balance between the opposite requirements imposed by the wireless networking and vision processing tasks. While reducing energy consumption by limiting data transmissions is the primary challenge of energy-constrained visual sensor networks, the quality of the image data and application, QoS, improve as the network provides more data. In such an environment, the optimization methods for sensor management developed for wireless sensor networks are hard to apply to multimedia sensor networks. Such sensor management policies usually employ the clustering methods which form clusters based on sensor neighbourhood or radiocoverage. But, as it was mentioned, because of the main difference between directional sensing region of multimedia sensors and the sensing range of scalar sensors, these schemes designed for WSNs, do not have efficiency for WMSNs. Moreover, sensor management strategies of WSNs do not consider the eventdriven nature of multimedia sensor networks, nor do they consider the unpredictability of data traffic caused by a monitoring procedure. This thesis, first, present a novel clustering mechanism based on the overlapping of the FoV of multimedia nodes. The proposed clustering method establishes clusters with grouping nodes that their FoVs overlap at least in a minimum threshold area. Two styles of cluster membership are offered by the mechanism depending on the desired network application; Single Cluster Membership (SCM) and Multi Cluster Membership (MCM). The name of MCM comes from the fact that a node may belong to multiple clusters, if its FoV intersects more than one cluster-head (CH) and satisfies the threshold area while in SCM each node belongs to exactly one cluster. Then, the proposed node management schemes designed for WMSNs are presented; the node selection and scheduling schemes manage the acts of the multimedia sensor nodes in a collaborative manner in clusters with employing the mentioned clustering method. Intra-Cluster Cooperation (ICC) and Intra&Inter-Cluster Cooperation (IICC) use the SCM and MCM clusters respectively. The monitoring period is optimized and the sensing region is divided among clusters and multimedia tasks are performed applying cooperation within and between clusters. The objective is conserving the residual energy of nodes to prolong the network lifetime. Finally, a hybrid architecture for WMSNs in order to energy efficient collaborative surveillance is proposed. The proposed mechanism employs a mixed random deployment of acoustic and visual sensor nodes. Acoustic sensors detect and localize the occurred event/object(s) in a duty-cycled manner by sampling the received signals and then trigger the visual sensor nodes covering the objects to monitor them. Hence, visual sensors are warily scheduled to be awakened just for monitoring the object(s) detected in their domain, otherwise they save their energy. Section B. 4 of Chapter I introduces the contributions of this thesis.

  • The architecture of a data-centric communications stack for intermittent networks

     Fusté Vilella, David; Garcia Vidal, Jorge
    International Conference on Wireless Communications in Unusual and Confined Areas
    Presentation's date: 2012-08
    Presentation of work at congresses

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  • Opportunistic Routing in Wireless Mesh Networks  Open access

     Darehshoorzadeh, Amir
    Defense's date: 2012-07-23
    Department of Computer Architecture, Universitat Politècnica de Catalunya
    Theses

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    Advances in communication and networking technologies are rapidly making ubiquitous network connectivity a reality. In recent years, Wireless Mesh Networks (WMNs) have already become very popular and been receiving an increasing amount of attention by the research community. Basically, a WMN consists of simple mesh routers and mesh clients, where mesh routers form the backbone of WMN. Due to the limited transmission range of the radio, many pairs of nodes in WMN may not be able to communicate directly, hence they need other intermediate nodes to forward packets for them. Routing in such networks is an important issue and it poses great challenges. Opportunistic Routing (OR) has been investigated in recent years as a way to increase the performance of WMNs by exploiting its broadcast nature. In OR, in contrast to traditional routing, instead of pre-selecting a single specic node to be the next-hop as a forwarder for a packet, an ordered set of nodes (referred to as candidates) is selected as the potential next-hop forwarders. Thus, the source can use multiple potential paths to deliver the packets to the destination. More specically, when the current node transmits a packet, all the candidates that successfully receive it will coordinate with each other to determine which one will actually forward it, while the others will simply discard the packet. This dissertation studies the properties, performance, maximum gain, candidate selection algorithms and multicast delivery issues about Opportunistic Routing in WMNs. Firstly, we focus on the performance analysis of OR by proposing a Discrete Time Markov Chain (DTMC). This model can be used to evaluate OR in terms of expected number of transmissions from the source to the destination. Secondly, we apply our Markov model to compare relevant candidate selection algorithms that have been proposed in the literature. They range from non-optimum, but simple, to optimum, but with a high computational cost. Thirdly, the set of candidates which a node uses and priority order of them have a signicant impact on the performance of OR. Therefore, using a good metric and algorithm to select and order the candidates are key factors in designing an OR protocol. As the next contribution we propose a new metric that measures the expected distance progress of sending a packet using a set of candidates. Based on this metric we propose a candidate selection algorithm which its performance is very close to the optimum algorithm although our algorithm runs much faster. Fourthly, we have investigated the maximum gain that can be obtained using OR. We have obtained some equations that yield the distances of the candidates in OR such that the per transmission progress towards the destination is maximized. Based on these equations we have proposed a novel candidate selection algorithm. Our new algorithm only needs the geographical location of nodes. The performance of our proposal is very close to the optimum candidate selection algorithm although our algorithm runs much faster. Finally, using OR to support multicast is an other issue that we have investigated in this thesis. We do so by proposing a new multicast protocol which uses OR. Unlike traditional multicast protocols, there is no designated next-hop forwarder for each destination in our protocol, thus the delivery ratio is maximized by taking advantage of spatial diversity.

  • Power saving trade-offs in delay/disruptive tolerant networks

     Trullols Cruces, Oscar; Morillo Pozo, Julian David; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks
    Presentation of work at congresses

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    Wireless nodes such as smart-phones in which the WiFi wireless card is continuously on, consume battery energy in just a few hours. Moreover, in many scenarios, an always-on wireless card is useless because there is often no need for transmission and/or reception. This fact is exacerbated in Delay/Disruptive Tolerant Network (DTN) environments, in which nodes exchange Delay Tolerant Objects (DTO) when they meet. Power Saving Management (PSM) techniques enable the lifetime of the nodes to be extended. This paper analyses the trade-offs that appear when wireless nodes periodically turn off the wireless card in order to save battery in DTN environments. The paper shows the conditions in which a node can switch off the battery without impacting the peer-to-peer contact probability, and those in which this contact probability is decreased. For example, it is shown that node lifetime can be doubled while keeping the peer-to-peer contact probability equal to one. But, further increase of the node lifetime quickly decreases peer-to-peer contact probability. Finally, the impact of power savings in DTO dissemination time is also analyzed.

  • An abstraction methodology for the evaluation of multi-core multi-threaded architectures

     Zilan, Ruken; Verdu Mula, Javier; Garcia Vidal, Jorge; Nemirovsky, Mario; Milito, Rodolfo; Valero Cortes, Mateo
    IEEE International Symposium on Modelling, Analysis and Simulation of Computer and Telecommunication Systems
    Presentation's date: 2011-07-25
    Presentation of work at congresses

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    As the evolution of multi-core multi-threaded processors continues, the complexity demanded to perform an extensive trade-off analysis, increases proportionally. Cycle-accurate or trace-driven simulators are too slow to execute the large amount of experiments required to obtain indicative results. To achieve a thorough analysis of the system, software benchmarks or traces are required. In many cases when an analysis is needed most, during the earlier stages of the processor design, benchmarks or traces are not available. Analytical models overcome these limitations but do not provide the fine grain details needed for a deep analysis of these architectures. In this work we present a new methodology to abstract processor architectures, at a level between cycle-accurate and analytical simulators. To apply our methodology we use queueing modeling techniques. Thus, we introduce Q-MAS, a queueing based tool targeting a real chip (the Ultra SPARC T2 processor) and aimed at facilitating the quantification of trade-offs during the design phase of multi-core multi-threaded processor architectures. The results demonstrate that Q-MAS, the tool that we developed, provides accurate results very close to the actual hardware, with a minimal cost of running what-if scenarios.

  • A cooperative-ARQ protocol with frame combining

     Morillo Pozo, Julian David; Garcia Vidal, Jorge
    Wireless networks
    Date of publication: 2011-05
    Journal article

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  • MSTACK: A COMMUNICATIONS STACK FOR MOBILE AD-HOC NETWORKS  Open access

     Fusté Vilella, David
    Defense's date: 2011-10-21
    Department of Computer Architecture, Universitat Politècnica de Catalunya
    Theses

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    Les xarxes mòbils ad-hoc, també conegues com a MANETs, han estat des de fa ja molt temps objectiu d'estudi per part de la comunitat científica. No obstant això, la seva importància dins el món de la indústria és encara molt baix. Aquests tipus de xarxes, formades per dispositius mòbils tals com smartphones o portàtils, poden ser usades per exemple en entorns mòbils com els campus universitaris, els centres de conferència, o en les indústries militars, de seguretat ciutadana, etc. Per poder establir comunicacions fiables entre els diferents dispositius d'una MANET fa falta un stack de comunicacions. Des de sempre, la comunitat científica ha basat els seus esforços en optimitzar l'stack de comunicacions TCP/IP, l'stack per excel·lència en la majoria de les xarxes actuals. Enlloc de dissenyar un nou stack de comunicacions, els científics han intentat adaptar i millorar les solucions ja existents provinents del món de les xarxes cablejades. Nosaltres, en canvi, creiem que un nou stack de comunicacions específicament dissenyat per a les MANETs és indispensable si el que volem és aconseguir comunicacions fiables en aquest tipus de xarxes, les quals tenen propietats molt diferents a les de les xarxes cablejades. En aquesta tesi presentem el que avui en dia encara no existeix: un nou stack de comunicacions específicament dissenyat per MANETs. Aquest stack és un exemple de com molts dels mecanismes usats en el món de les xarxes cablejades han de ser redissenyats des de la seva base si del que es tracta és de dissenyar protocols per a xarxes mòbils ad-hoc. En definitiva, nosaltres creiem que els resultats presentats en aquesta tesi demostren el potencial d'aquest nou stack de comunicacions per a les MANETs.

    Mobile ad-hoc networks have received considerable attention in the wireless communications research community. Nevertheless, its importance in industry is still low. Self-organized MANETs of smartphones or laptops can be used, for example, in military, public safety and disaster relief, conference, or campus environments. In order to enable communications between nodes inside a MANET, a communications stack is needed in each node of the network. Research in this area was always focused on optimizing the TCP/IP stack, the stack par excellence in the majority of our current networks. Instead of designing a complete new communications stack, researchers focused their work mainly on improving already existing solutions coming from the wired networks. However, we think that a complete and new communications stack specifically designed for MANETs is needed if we want to achieve robust communications in this type of networks, which have properties very different from what wired networks have. In this thesis we present what nowadays is still missing: a novel communications stack specifically designed for mobile ad-hoc networks. The MStack is an example of how some of the basic assumptions and mechanisms used in wired or wireless infrastructure networks must be fundamentally modified when dealing with MANETs. All in all, we believe that the results presented in this thesis provide interesting insights into the potential of the MStack in MANETs.

  • NETWORK CODING FOR TRANSPORT PROTOCOLS  Open access

     Iordache, Steluta
    Defense's date: 2011-07-11
    Department of Computer Architecture, Universitat Politècnica de Catalunya
    Theses

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    With the proliferation of smart devices that require Internet connectivity anytime, anywhere, and the recent technological advances that make it possible, current networked systems will have to provide a various range of services, such as content distribution, in a wide range of settings, including wireless environments. Wireless links may experience temporary losses, however, TCP, the de facto protocol for robust unicast communications, reacts by reducing the congestion window drastically and injecting less traffic in the network. Consequently the wireless links are underutilized and the overall performance of the TCP protocol in wireless environments is poor. As content delivery (i.e. multicasting) services, such as BBC iPlayer, become popular, the network needs to support the reliable transport of the data at high rates, and with specific delay constraints. A typical approach to deliver content in a scalable way is to rely on peer-to-peer technology (used by BitTorrent, Spotify and PPLive), where users share their resources, including bandwidth, storage space, and processing power. Still, these systems suffer from the lack of incentives for resource sharing and cooperation, and this problem is exacerbated in the presence of heterogenous users, where a tit-for-tat scheme is difficult to implement. Due to the issues highlighted above, current network architectures need to be changed in order to accommodate the users¿ demands for reliable and quality communications. In other words, the emergent need for advanced modes of information transport requires revisiting and improving network components at various levels of the network stack. The innovative paradigm of network coding has been shown as a promising technique to change the design of networked systems, by providing a shift from how data flows traditionally move through the network. This shift implies that data flows are no longer kept separate, according to the ¿store-and-forward¿ model, but they are also processed and mixed in the network. By appropriately combining data by means of network coding, it is expected to obtain significant benefits in several areas of network design and architecture. In this thesis, we set out to show the benefits of including network coding into three communication paradigms, namely point-topoint communications (e.g. unicast), point-to-multipoint communications (e.g. multicast), and multipoint-to-multipoint communications (e.g. peer-to-peer networks). For the first direction, we propose a network coding-based multipath scheme and show that TCP unicast sessions are feasible in highly volatile wireless environments. For point-to-multipoint communications, we give an algorithm to optimally achieve all the rate pairs from the rate region in the case of degraded multicast over the combination network. We also propose a system for live streaming that ensures reliability and quality of service to heterogenous users, even if data transmissions occur over lossy wireless links. Finally, for multipoint-to-multipoint communications, we design a system to provide incentives for live streaming in a peer-to-peer setting, where users have subscribed to different levels of quality. Our work shows that network coding enables a reliable transport of data, even in highly volatile environments, or in delay sensitive scenarios such as live streaming, and facilitates the implementation of an efficient incentive system, even in the presence of heterogenous users. Thus, network coding can solve the challenges faced by next generation networks in order to support advanced information transport.

  • COOPERACIÓN Y OPORTUNISMO EN REDES DE ACCESO INALÁMBRICAS Y HETEROGÉNEAS

     Cerdà Alabern, Llorenç; Guerrero Zapata, Manel; Morillo Pozo, Julian David; Garcia Vidal, Jorge; Barcelò Ordinas, José María
    Participation in a competitive project

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  • Improving Wireless Networks with Cooperative ARQ Protocols

     Morillo Pozo, Julian David
    Defense's date: 2009-07-14
    Department of Computer Architecture, Universitat Politècnica de Catalunya
    Theses

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  • Access to the full text
    Internet traffic and the behavior of processing workloads  Open access

     Zilan, Ruken; Verdu Mula, Javier; Garcia Vidal, Jorge; Nemirovsky, Mario; Valero Cortes, Mateo
    International Summer School on Advanced Computer Architecture and Compilation for High-Performance and Embedded Systems
    Presentation's date: 2009-07
    Presentation of work at congresses

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    Nowadays, the evolution of network services provided at the edge of Internet increases the requirements of network applications. Such applications result in complexities thus, the processors need to execute more complex workloads that can deal not only with the packet header, but also with the packet payload (e.g. Deep Packet Inspection). Unlike common routing applications that show similar processing among packets, next-generation of network applications present variations in the processing procedure among packets. Thus, different traffic behaviors can produce different process patterns and present different memory and processing requirements. The aim of this work is to present an ongoing work towards correlating Internet traffic features with variations of processing workloads on the next-generation of edge routers.

  • Quality of service through bandwidth reservation on multirate ad hoc wireless networks

     Paoliello Guimarães, Rafael; Cerdà Alabern, Llorenç; Barcelò Ordinas, José María; Garcia Vidal, Jorge; Voorhaen, Michael; Blondia, Chris
    Ad hoc networks
    Date of publication: 2009-03
    Journal article

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  • Access to the full text
    A cooperative vehicular network framework  Open access

     Trullols Cruces, Oscar; Morillo Pozo, Julian David; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    IEEE International Conference on Communications
    Presentation's date: 2009-06-17
    Presentation of work at congresses

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    Vehicular Ad Hoc Networks are networks characterized by intermittent connectivity and rapid changes in their topology. This paper addresses car-to-road communications in which vehicles use Access Points (AP) in a Delay Tolerant Network architecture. Results show how the combination of a Delay-Cooperative ARQ mechanism reduces packet losses and in conjunction with a Carry-and-Forward cooperative mechanism improves performance parameters in terms of total file transfer delay and number of AP needed to download files.

  • MIRAVEO: DESARROLLO RED SOCIAL DE PROXIMIDAD EN UN CAMPUS UNIVERSITARIO

     Garcia Vidal, Jorge
    Participation in a competitive project

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  • XARXES DE COMPUTADORS I SISTEMES DISTRIBUÏTS

     Navarro Moldes, Leandro; Guerrero Zapata, Manel; Barcelò Ordinas, José María; Morillo Pozo, Julian David; Cerdà Alabern, Llorenç; Trullols Cruces, Oscar; Garcia Vidal, Jorge
    Participation in a competitive project

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  • Evaluation of a Cooperative ARQ Protocol for Delay-Tolerant Vehicular Networks

     Morillo Pozo, Julian David; Trullols-Cruces, O; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    Lecture notes in computer science
    Date of publication: 2008-01
    Journal article

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  • Contribución a la teoría de redes de interconexión y de radiocomunicación

     Gomez Marti, Jose
    Defense's date: 2008-09-18
    Department of Computer Architecture, Universitat Politècnica de Catalunya
    Theses

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    Evaluation of a cooperative ARQ protocol for delay-tolerant vehicular networks  Open access

     Morillo Pozo, Julian David; Trullols Cruces, Oscar; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    Date of publication: 2008-10-16
    Book chapter

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    This paper evaluates a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The scenario consists in cars downloading information from Access Points along a road. The key difference between proposed Cooperative ARQ protocols is when the cooperation takes place. Simply C-ARQ cooperation occurs in a packet-by-packet basis. In this proposal, that we call DC-ARQ (Delayed Cooperative ARQ), the cooperation is delayed until cars are out of the coverage area of the Access Point. The scheme has been evaluated through simulations. A comparison of DC-ARQ with a baseline case in which no cooperation is used has been performed under different vehicle densities scenarios.

    Postprint (author’s final draft)

  • TSI2007-66869-C02-01 "Integración de Redes Ad Hoc, Mesh y Celulares"

     Garcia Vidal, Jorge; Guerrero Zapata, Manel; Barcelò Ordinas, José María; Morillo Pozo, Julian David; Cerdà Alabern, Llorenç; Alaei, Mohammad; Fusté Vilella, David; Trullols Cruces, Oscar
    Participation in a competitive project

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  • A Cooperative ARQ for Delay-Tolerant Vehicular Networks

     Morillo, Julián David; Trullols, Oscar; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    Date: 2008-03
    Report

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  • New networking paradigms applied to vehicular ad hoc networks

     Trullols Cruces, Oscar; Morillo Pozo, Julian David; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    EuroNF Workshop on Wireless and Mobility
    Presentation's date: 2008-10-24
    Presentation of work at congresses

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  • Applying cooperation for Delay Tolerant Vehicular Networks

     Garcia Vidal, Jorge
    Fourth EuroFGI Workshop on "Wireless and Mobility"
    Presentation's date: 2008-01-16
    Presentation of work at congresses

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  • Applying cooperation for delay tolerant vehicular networks

     Morillo Pozo, Julian David; Barcelò Ordinas, José María; Trullols Cruces, Oscar; Garcia Vidal, Jorge
    EuroFGI Workshop on Wireless and Mobility
    Presentation's date: 2008-01-16
    Presentation of work at congresses

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  • A cooperative ARQ for delay-tolerant vehicular networks

     Morillo Pozo, Julian David; Trullols Cruces, Oscar; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    International Conference on Distributed Computing Systems
    Presentation's date: 2008-06-20
    Presentation of work at congresses

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  • TrafficNet: A L2 Network Architecture for Road-to-Vehicle Communication

     Fusté, D; Pulido, J M; Garcia Vidal, Jorge; Gheorghiu, S
    Lecture notes in computer science
    Date of publication: 2007-03
    Journal article

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  • A Protocol Stack for Cooperative Network

     Garcia Vidal, Jorge; Guerrero Zapata, Manel; Morillo Pozo, Julian David; Fusté, D
    Lecture notes in computer science
    Date of publication: 2007-03
    Journal article

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  • Las clases de problemas de la asignatura STD

     Barcelò Ordinas, José María; Cerdà Alabern, Llorenç; Cruellas Ibarz, Juan Carlos; Garcia Vidal, Jorge
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • A low coordination overhead C-ARQ protocol with Frame Combining

     Morillo-Pozo, J; Morillo Pozo, Julian David; Garcia-Vidal, J; Garcia Vidal, Jorge
    Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
    Presentation of work at congresses

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  • A Protocol Stack for Cooperative Wireless Networks

     Garcia Vidal, Jorge; Guerrero Zapata, Manel; Morillo Pozo, Julian David; Fusté Vilella, David
    Date of publication: 2007-05
    Book chapter

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  • L'assignatura Protocols d'Internet i Multimèdia

     Garcia Vidal, Jorge; Domingo Pascual, Jordi; Barcelò Ordinas, José María
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • Observación institucional

     Barcelò Ordinas, José María; Cortes Rossello, Antonio; Fernandez Jimenez, Agustin; Garcia Vidal, Jorge; Morancho Llena, Enrique; Valero Garcia, Miguel; Valero-Garcia, Miguel
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • L'assignatura Estructura i Disseny de Sistemes Operatius

     Cortés, Toni; Garcia Vidal, Jorge; Garcia Almiñana, Jordi; Navarro Mas, Nacho
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • Experiencia de participación de alumnos de la FIB en un curso de creación de empresas

     Garcia Vidal, Jorge
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • The case for a cooperative stack in wireless networks

     Garcia Vidal, Jorge
    7th Wurzburg Workshop on IP
    Presentation's date: 2007-07-23
    Presentation of work at congresses

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  • A low coordination overhead C-ARQ protocol with frame combing

     Morillo Pozo, Julian David; Garcia Vidal, Jorge
    Date: 2007-03
    Report

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  • A low coordination overhead C-ARQ protocol with Frame Combining

     Garcia Vidal, Jorge
    Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
    Presentation's date: 2007-09-04
    Presentation of work at congresses

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  • La Docencia de Redes de Computadoras y Sistemas Distribuidos para Ingenieros Informáticos

     Garcia Vidal, Jorge; Cerdà Alabern, Llorenç; Barcelò Ordinas, José María; Guerrero Zapata, Manel; Morillo Pozo, Julian David
    CEDI 2007 II Congreso Español de Informática
    Presentation of work at congresses

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  • L'assignatura Serveis Públics de Dades

     Sole Pareta, Josep; Garcia Vidal, Jorge
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • La Docencia de Redes de Computadoras y Sistemas Distribuidos para Ingenieros Informáticos

     Garcia Vidal, Jorge
    CEDI 2007 II Congreso Español de Informática
    Presentation's date: 2007-09-11
    Presentation of work at congresses

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  • L'assignatura Configuració i Avaluació del Rendiment de Sistemes

     Garcia Vidal, Jorge; Gil Gómez, Maria Luisa; Torres Viñals, Jordi
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • El doctorat del DAC

     Gonzalez Colas, Antonio Maria; Ayguade Parra, Eduard; Espasa Sans, Roger; Garcia Vidal, Jorge; Navarro Guerrero, Juan Jose
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • Aprendizaje activo

     Barcelò Ordinas, José María; Cortes Rossello, Antonio; Fernandez Jimenez, Agustin; Garcia Vidal, Jorge; Morancho Llena, Enrique; Navarro Guerrero, Juan Jose; Valero Garcia, Miguel; Valero-Garcia, Miguel
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • Cómo rellenar las plantillas de las asignaturas que pide la FIB

     Navarro Guerrero, Juan Jose; Garcia Vidal, Jorge
    Jornades de Docència del Departament d'Arquitectura de Computadors. 10 Anys de Jornades
    Presentation of work at congresses

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  • The Impact of Traffic Aggregation on the Memory Performance of Networking Applications

     Verdu Mula, Javier; Garcia Vidal, Jorge; Nemirovsky, Mario; Valero Cortes, Mateo
    Journal of embedded computing
    Date of publication: 2006-10
    Journal article

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  • A DRAM/SRAM Memory Scheme for Fast Packet Buffers

     Garcia Vidal, Jorge; March, M; Cerdà Alabern, Llorenç; Corbal, J; Valero Cortes, Mateo
    IEEE transactions on computers
    Date of publication: 2006-05
    Journal article

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  • Subnet Formation and Address Allocation Approach for a Routing with Subnets Scheme in MANETs

     López, J; Barcelò Ordinas, José María; Garcia Vidal, Jorge
    Lecture notes in computer science
    Date of publication: 2006-01
    Journal article

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