Search results for " networking"

showing 10 items of 1264 documents

A flexible and reconfigurable 5G networking architecture based on context and content information

2017

The need for massive content delivery is a consolidated trend in mobile communications, and will even increase for next years. Moreover, while 4G maturity and evolution is driven by video contents, next generation (5G) networks will be dominated by heterogeneous data and additional massive diffusion of Internet of Things (IoT). The current network architecture is not sufficient to cope with such traffic, which is heterogeneous in terms of latency and QoS requirements, and variable in space and time. This paper proposes architectural advances to endow the network with the necessary flexibility helping to adapt to these varying traffic needs by providing content and communication services whe…

5G networkingComputer scienceflexible HW/SW platforms 5G networking context-awareness content-centric networks reconfigurability050801 communication & media studies02 engineering and technologyflexible HW/SW platforms 5G networking context-awareness; content-centric networks; reconfigurability.0508 media and communications0202 electrical engineering electronic engineering information engineeringReference architectureArchitectureNetwork architecturebusiness.industrySettore ING-INF/03 - TelecomunicazioniQuality of service05 social sciencesflexible HW/SW platformscontent-centric networkscontext-awarenessReconfigurability020206 networking & telecommunicationsApplications architectureMobile telephonybusinessreconfigurability5GComputer network
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Designing the 5G network infrastructure: a flexible and reconfigurable architecture based on context and content information

2018

5G networks will have to offer extremely high volumes of content, compared to those of today’s. Moreover, they will have to support heterogeneous traffics, including machine-to-machine, generated by a massive volume of Internet-of-Things devices. Traffic demands will be variable in time and space. In this work, we argue that all this can be achieved in a cost-effective way if the network is flexible and reconfigurable. We present the Flex5Gware network architecture, designed to meet the above requirements. Moreover, we discuss the links between flexibility and reconfigurability, on the one side, and context awareness and content awareness, on the other; we show how two of the building…

5G networkingStandardizationFlexible HW/SW platformComputer Networks and CommunicationsComputer scienceContext-awareneDistributed computinglcsh:TK7800-8360050801 communication & media studies02 engineering and technologylcsh:Telecommunication0508 media and communicationslcsh:TK5101-6720flexible HW/SW platforms 5G networking context-awareness; content-awareness; reconfigurability0202 electrical engineering electronic engineering information engineeringContext awarenessArchitecturecontent-awarenessNetwork architectureAccess networklcsh:Electronicsflexible HW/SW platforms05 social sciencescontext-awarenessReconfigurabilityControl reconfigurationComputer Science Applications1707 Computer Vision and Pattern Recognition020206 networking & telecommunicationsComputer Science ApplicationsContent-awareneSignal Processingreconfigurability5GEURASIP Journal on Wireless Communications and Networking
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Radio environment map estimation based on communication cost modeling for heterogeneous networks

2017

Los mapas del entorno radioeléctrico pueden ser una poderosa herramienta para lograr una asignación de recursos eficiente y consciente del contexto en las redes heterogéneas 5G. En este trabajo, consideramos una red heterogénea formada por una red celular tradicional y una red de sensores inalámbricos. El papel de la red de sensores inalámbricos es estimar el mapa del entorno radioeléctrico de la célula utilizando una técnica de interpolación geoestadística denominada Kriging. En un trabajo anterior se propuso un algoritmo de agrupación distribuida de sensores para reducir la complejidad de la estimación. En nuestra contribución, el proceso de formación de clústeres se modifica para incluir…

:CIENCIAS TECNOLÓGICAS [UNESCO]Computer scienceReal-time computing020302 automobile design & engineering020206 networking & telecommunications02 engineering and technologyUNESCO::CIENCIAS TECNOLÓGICASradio environment maps0203 mechanical engineeringMetric (mathematics)0202 electrical engineering electronic engineering information engineeringCellular networkResource allocationcommunication costkrigingCluster analysiswireless sensor networksWireless sensor networkHeterogeneous network5GInterpolation
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Distributed radio map reconstruction for 5G automotive

2018

Se espera que los mapas de entorno radio sean una herramienta esencial para la optimización y gestión de recursos del 5G en vehículos. En este trabajo, consideramos el problema de la reconstrucción del mapa de entorno radio utilizando una red de sensores inalámbricos formada por nodos sensores en vehículos, nodos de acceso de una infraestructura de ciudad inteligente, etc. Debido a las limitaciones de recursos en las redes de sensores, es crucial seleccionar un pequeño número de mediciones de los sensores para reconstruir el campo. En este contexto, presentamos un novedoso algoritmo distribuido basado en el método de regresión Kriging para la reconstrucción del mapa de entorno radio en térm…

:CIENCIAS TECNOLÓGICAS [UNESCO]Computer scienceradio mapsReal-time computingContext (language use)02 engineering and technology0203 mechanical engineeringKrigingComputer Science::Networking and Internet Architecture0202 electrical engineering electronic engineering information engineeringWirelesskrigingCluster analysisShadow mappingbusiness.industryMechanical Engineering020302 automobile design & engineering020206 networking & telecommunicationsUNESCO::CIENCIAS TECNOLÓGICASComputer Science Applicationsdistributed channel predictionAutomotive EngineeringbusinessWireless sensor network5GCommunication channel
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Semantically-enhanced advertisement recommender systems in social networks

2016

El suministro de recomendaciones en los sistemas sociales lleva ya algún tiempo en el punto de mira tanto de los académicos como de la industria. Los gigantes de las redes sociales como Facebook, LinkedIn, Myspace, etc., están ansiosos por encontrar la bala de plata de la recomendación. Estas aplicaciones permiten a los clientes dar forma a unas determinadas redes sociales a través de sus comunicaciones sociales cooperativas cotidianas. Mientras tanto, la experiencia online actual depende progresivamente de la asociación social. Una de las principales preocupaciones en la red social es establecer un plan de negocio exitoso para obtener más beneficios de la red social. Hacer un negocio en ca…

:CIENCIAS TECNOLÓGICAS [UNESCO]Knowledge managementSocial networkbusiness.industryComputer sciencesemantic technologies020206 networking & telecommunicationsAdvertising02 engineering and technologyRecommender systemUNESCO::CIENCIAS TECNOLÓGICASProfit (economics)World Wide WebSilver bulletSocial systemSocial cooperative0202 electrical engineering electronic engineering information engineeringsocial networkBusiness planrecommender systemsbusiness
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A low complexity distributed cluster based algorithm for spatial prediction

2017

Los mapas del entorno radioeléctrico (REM) pueden ser una herramienta esencial para numerosas aplicaciones en las futuras redes inalámbricas 5G. En este trabajo, empleamos un popular método geoestadístico llamado kriging ordinario para estimar el REM de un área cubierta por un eNodeB equipado con múltiples antenas. Los sensores inalámbricos se distribuyen por el área de interés y se organizan clústeres adaptativos de sensores para mejorar la calidad de la estimación del canal. En este trabajo, modificamos el algoritmo de clustering distribuido propuesto en un trabajo anterior para reducir la complejidad de la predicción de kriging. Se realizan simulaciones para detallar la técnica de formac…

:CIENCIAS TECNOLÓGICAS [UNESCO]Theoretical computer scienceWireless networkbusiness.industryComputer science020206 networking & telecommunications010103 numerical & computational mathematics02 engineering and technologyUNESCO::CIENCIAS TECNOLÓGICASradio environment maps01 natural sciencesdistributed channel predictionKey distribution in wireless sensor networksKrigingComputer engineeringKriging0202 electrical engineering electronic engineering information engineeringWireless0101 mathematicsCluster analysisbusinesswireless sensor networksWireless sensor networkInterpolation
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Distributed channel prediction for multi-agent systems

2017

Los sistemas multiagente (MAS) se comunican a través de una red inalámbrica para coordinar sus acciones e informar sobre el estado de su misión. La conectividad y el rendimiento del sistema pueden mejorarse mediante la predicción de la ganancia del canal. Presentamos un esquema basado en regresión de procesos gaussianos (GPR) distribuidos para predecir el canal inalámbrico en términos de la potencia recibida en el MAS. El esquema combina una máquina de comité bayesiano con un esquema de consenso medio, distribuyendo así no sólo la memoria sino también la carga computacional y de comunicación. A través de simulaciones de Monte Carlo, demostramos el rendimiento del GPR propuesto. RACHEL TEC20…

:CIENCIAS TECNOLÓGICAS [UNESCO]Wireless networkComputer sciencebusiness.industryDistributed computingMulti-agent systemMonte Carlo method020206 networking & telecommunicationsBayesian committee machine02 engineering and technologyUNESCO::CIENCIAS TECNOLÓGICASKriging0202 electrical engineering electronic engineering information engineeringWireless020201 artificial intelligence & image processingmulti-agent systemsbusinessgaussian process regressionSimulationCommunication channelaverage consensus scheme
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Color constancy in dermatoscopy with smartphone

2017

The recent spread of cheap dermatoscopes for smartphones can empower patients to acquire images of skin lesions on their own and send them to dermatologists. Since images are acquired by different smartphone cameras under unique illumination conditions, the variability in colors is expected. Therefore, the mobile dermatoscopic systems should be calibrated in order to ensure the color constancy in skin images. In this study, we have tested a dermatoscope DermLite DL1 basic, attached to Samsung Galaxy S4 smartphone. Under the controlled conditions, jpeg images of standard color patches were acquired and a model between an unknown device-dependent RGB and a device independent Lab color space h…

:MEDICINE [Research Subject Categories]Computer scienceDermatoscopesComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION02 engineering and technologysmartphone01 natural sciences0202 electrical engineering electronic engineering information engineeringmedicineComputer visionDermatoscopyColor constancymedicine.diagnostic_testbusiness.industry010401 analytical chemistry020206 networking & telecommunicationscomputer.file_formatJPEGcolor reproduction accuracy0104 chemical sciencesdermatologymedicine.anatomical_structure:NATURAL SCIENCES::Physics::Atomic and molecular physics [Research Subject Categories]Lab color spaceRGB color modelHuman eyetelemedicineArtificial intelligencecolor constancybusinessSkin lesioncomputerBiophotonics—Riga 2017
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AUGMENTED REALITY

2011

Already used in very specific areas such as in military and medical or academic research, in 2009 thanks to improved technology, augmented reality is to reach wider audiences and as information campaigns, advertising-augmented published in newspapers or on the network, and through a growing number of applications for mobile phones, particularly iPhone. "The Augmented Reality on the desktop computer is based on the use of markers, or ARtags, and stylized drawings, which are shown to the webcam, are recognized by the PC, and which are overlaid in real-time multimedia content: video, audio , 3D objects, etc.. Normally, applications of augmented reality are based on Adobe Flash technology and t…

AUGMENTED REALITY MUSEUM HERITAGE REPRESENTATION MARKERS. NETWORKING THE WORLD: CONCEPTS METHODS DATA.Settore ICAR/17 - Disegno
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Proportional and Preemption-Enabled Traffic Offloading for IP Flow Mobility: Algorithms and Performance Evaluation

2018

IP Flow Mobility (IFOM) enables a user equipment to offload data traffic at the IP flow level. Although the procedure of IFOM-based flow offloading has been specified by 3GPP, how many IP flows should be offloaded and when offloading should be performed are not defined. Consequently, IP flows may be routed to a target access network which has a strong signal strength but with backhaul congestion or insufficient access capability. In this paper, we propose two algorithms, referred to as proportional offloading (PO), and proportional and preemption-enabled offloading (PPO), respectively, for IP flow offloading in hybrid cellular and wireless local area networks. The PO algorithm decides an op…

Access networkComputer Networks and CommunicationsComputer sciencebusiness.industryIT service continuityComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSPreemptionLocal area networkAerospace Engineering020206 networking & telecommunications020302 automobile design & engineering02 engineering and technologyBackhaul (telecommunications)0203 mechanical engineeringUser equipmentAutomotive Engineering0202 electrical engineering electronic engineering information engineeringWirelessElectrical and Electronic EngineeringbusinessMobility managementAlgorithmIEEE Transactions on Vehicular Technology
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