Fernando Boronat

• PhD Telecomm. Engineer
• Lecturer at Polytechnic University of Valencia

Background and objectives The invention described herein is a prototype based on computer vision technology that measures depth perception and is intended for the early examination of stereopsis. Materials and methods The prototype (software and hardware) is a depth perception measurement system that consists on: (a) a screen showing stereoscopic...

Thanks to the improvements experienced in technology during the last few years, most especially in virtual reality systems, the number and potential of networked virtual environments or NVEs and their users have been increasing. NVEs aim to give distributed users a feeling of immersion in a virtual world and the possibility of interacting with othe...

Most recent edge and fog computing architectures aim at pushing cloud-native traits at the edge of the network, reducing latency, power consumption, and network overhead, allowing operations to be performed close to data sources. To manage these architectures in an autonomous way, systems that materialize in specific computing nodes must deploy sel...

Fighting against climate change and global warming is one of the biggest challenges faced by the Maritime Industry nowadays to make the supply chain greener and environmentally sustainable. Cutting greenhouse gases (GHG) emissions and decarbonizing the international shipping has been a paramount activity for the International Maritime Organization...

In this paper, a scalable hardware and software architecture for tiled display systems (a.k.a. videowalls), which can be implemented by using low-cost devices, together with a dynamic web-based management and configuration service are proposed. It has been designed to support both stored and live broadcast/broadband content, in mosaic or warp distr...

The Management and Orchestration framework (MANO) is the main element of the Network Function Virtualization paradigm. It is in charge of managing the life cycle of virtualized functions, from instantiation to manageability, live configuration, and termination. This kind of framework was originally designed to orchestrate network functions over vir...

Stereopsis is the three-dimensional perception capability, which is possible when binocular vision is present. Development of binocular vision system ends around 7-year-old, and after this time brain connections are already set, therefore, it will be difficult to recover stereopsis. Early diagnosis of Stereoscopic Visual Alterations (SVA) in the ch...

This paper aims at devising an IoT-based system to collaboratively calculate quantitative composite indicators among Industrial actors. Requirements have been considered to build a reliable, trusted, anonymised environment within which involved stakeholders can safely share information on the indicators while keeping sovereignty over their data. Te...

In recent decades, great strides have been made in the prevention of chronic diseases by setting healthier lifestyles for seniors trying to set effective health models. However, despite this great effort, there is still a lack of solutions on what we can call social care. Nowadays, Social isolation is a big health and social problem that communitie...

The Management and Orchestration framework (MANO) is the main element of the Network Function Virtualization paradigm. It is in charge of managing the lifecycle of virtualized functions, from instantiation to manageability, live configuration and termination. This kind of framework was originally designed to orchestrate network functions over virtu...

Traditionally, TV media content has exclusively involved 2D or 3D audiovisual streams consumed by using a simple TV device. However, in order to generate more immersive media consumption experiences, other new types of content (e.g., omnidirectional video), consumption devices (e.g., Head Mounted Displays or HMD) and solutions to stimulate other se...

INTER-Framework solution provides a way to homogenize the use of the interoperability layered infrastructure. By using INTER-FW, any IoT platform can be made interoperable with respect to its device, network, middleware and service layer. This tool offers a complete visual framework to configure and manage in a secure way and to develop new softwar...

A interoperability layer is fundamental to provide a global continuum interoperability among IoT platforms. To address this layer, the following activities have been carried out: (i) design of device-to-device interaction based on multiprotocol/access mechanisms; (ii) design of software defined interoperable modules for mobility and routing; (iii)...

Current Internet of Things (IoT) stacks are frequently focused on handling an increasing volume of data that require a sophisticated interpretation through analytics to improve decision making and thus generate business value. In this paper, a cognitive IoT architecture based on FIWARE IoT principles is presented. The architecture incorporates a ne...

Simultaneous consumption of related content in one (or multiple) devices (i.e., multi-screen scenarios) is commonplace. To provide a satisfactory Quality of Experience (QoE) in this type of scenarios it is necessary to adopt synchronization mechanisms to keep the involved content playout processes in a synchronized state. Most of those mechanisms a...

In this paper, a scalable hardware and software architecture for low-cost tiled display systems (a.k.a. videowalls), customizable through a dynamic web-based management and configuration service is presented and evaluated both objectively and subjectively. It has been designed for both stored and live broadcast/broadband content, in mosaic or warp...

In this paper, PAMTEL-RT, a web-based platform to provide remote health professional support and guidance during the initial assistance of emergency situations is presented. In particular, this platform focuses on the pediatric population and has been specifically designed to be used by non-healthcare professionals in training centers, such as educ...

Thanks to the improvements experienced in technology in the last few years, most especially in virtual reality systems, the number and potential of networked virtual environments or NVEs and their users are increasing. NVEs aim to give distributed users a feeling of immersion in a virtual world and the possibility of interacting with other users or...

Shared media experiences between geographically distributed users are gaining momentum. When remote users are consuming online media content together while interacting, several challenges still need to be addressed to provide an enjoyable experience (e.g. in terms of delays and synchronization). This paper presents Wersync, a web-based platform tha...

This paper presents a web-based platform for a customized and synchronized presentation of subtitles in both single- and multi-screen scenarios. The platform enables a dynamic user-level customization of subtitles in terms of format (font family, size, color, transparency...) and position, according to the users’ preferences and/or needs. It also a...

The maritime industry expects several improvements to efficiently manage the operation processes by introducing Industry 4.0 enabling technologies. Seaports are the most critical point in the maritime logistics chain because of its multimodal and complex nature. Consequently, coordinated communication among any seaport stakeholders is vital to impr...

The current wide range of heterogeneous consumption devices and delivery technologies, offers the opportunity to provide related contents in order to enhance and enrich the TV consumption experience. This paper describes a solution to handle the delivery and synchronous consumption of traditional broadcast TV content and related broadband omnidirec...

Traditionally, co-located TV content consumption has been a social habit (e.g., family members in the living room watching TV). It cannot be always possible to enjoy these shared experiences in the current global society, in which relatives or friends might live apart. In this context, the emergence of new technologies together with the advent of S...

Inter-destination media synchronization (IDMS) is a key requirement to enable successful networked shared media experiences between remote users. This paper presents an adaptive, accurate and standard-compliant IDMS solution for hybrid broadcast and broadband delivery. Apart from providing multi- and cross-technology support, the presented IDMS sol...

Media synchronization is a core research area in multimedia systems. This chapter introduces the area by providing key definitions, classifications, and examples. It also discusses the relevance of different types of media synchronization to ensure satisfactory Quality of Experience (QoE) levels and highlights their necessity, by comparing the magn...

This book provides an approachable overview of the most recent advances in the fascinating field of media synchronization (mediasync), gathering contributions from the most representative and influential experts. Understanding the challenges of this field in the current multi-sensory, multi-device, and multi-protocol world is not an easy task. The...

The combination of broadcast and broadband (hybrid) technologies for delivering TV related media contents can bring fascinating opportunities. It is motivated by the large amount and diversity of media contents, together with the ubiquity and multiple connectivity capabilities of modern consumption devices. This paper presents an end-to-end platfor...

En este artículo se presenta una propuesta de sistema videowall, tanto con distribución uniforme como disforme, formado por dispositivos de bajo coste, personalizable y configurable dinámica y remotamente vía Web. Se han analizado los sistemas de videowall existentes y las diferentes posibilidades en cuanto a su desarrollo con dispositivos de bajo...

En este artículo se presenta una plataforma extremo-a-extremo para la generación, entrega y sincronización de contenidos híbridos (broadcast y broadband) relacionados, tanto en un mismo como en múltiples dispositivos (ej. escenario multi-pantalla). La plataforma es compatible con la versión más reciente del estándar Hybrid Broadcast Broadband TV (2...

The combination of broadcast and broadband (hybrid) technologies for delivering TV related media contents is already a reality. It has been motivated by the large amount and diversity of media contents, together with the ubiquity and multiple connectivity capabilities of modern consumption devices. The use of connected TVs and companion devices (e....

This paper presents a web-based platform that enables the customization and synchronization of subtitles on both single- and multi-screen scenarios. The platform enables the dynamic customization of the subtitles' format (font family, size, color...) and position according to the users' preferences and/or needs. Likewise, it allows configuring the...

Adaptive Media Playout (AMP) consists of smoothly and dynamically adjusting the media playout rate to recover from undesired (e.g., buffer overflow/underflow or out-of-sync) situations. The existing AMP solutions are mainly characterized by two main aspects. The first one is their goal (e.g., keeping the buffers' occupancy into safe ranges or enabl...

This paper presents an end-to-end Dynamic Adaptive Streaming over HTTP (DASH) platform, developed by using open-source components. It includes and allows the configuration of all the required steps along the end-to-end media delivery chain, from the encoding, segmentation and storage of the media content at the server side, to the delivery and adap...

The recent and unceasing advances in Web technologies and components open the door to the development of a new wave of interactive, customizable and multi-device video consumption platforms. This chapter reviews various relevant Web technologies and components in the context of interactive media delivery and communication, and highlights a set of f...

Nowadays, media content can be delivered via diverse broadband and broadcast technologies. Although these different technologies have somehow become rivals, their coordinated usage and convergence, by leveraging of their strengths and complementary characteristics, can bring many benefits to both operators and customers. For example, broadcast TV c...

The Media Synchronization workshop, in its third edition, brings together an active community around the topic of media synchronization, attracting relevant researchers in this area. The objective of the workshop is to further built this community and set the research agenda on the topic of media synchronization. We will do this by sharing our curr...

The advances on multimedia systems have brought new challenges and requirements for media sync. Over the years, many media sync solutions have been devised. Due to this variety, several studies have surveyed the existing solutions and proposed classification schemes or reference models for media sync. This paper claims the relevance of media sync r...

Currently, several media sharing applications that allow social interactions between distributed users are gaining momentum. In these networked scenarios, synchronized playout between the involved participants must be provided to enable truly interactive and coherent shared media experiences. This research topic is known as Inter-Destination Media...

This paper analyzes the benefits of using network simulation as a learning resource in the educational area of Telematics Engineering. Accordingly, a (students’ skills) practice program, which can be done using either network simulation or real equipment, has been introduced in the core subject Telematics Architectures and Networks (TAN) of the sec...

Many media synchronization solutions (e.g., protocols, feedback reporting mechanisms, control techniques, or architectures) for RTP-based streaming have been devised under the umbrella of the IETF up to date. In this paper, authors rationalize their decision to go on relying on RTP/RTCP for designing an adaptive and accurate IDMS solution. Then, af...

Inter-Destination Media Synchronization (IDMS) is essential in the emerging media consumption paradigm, which is radically evolving from passive and isolated services towards dynamic and interactive group shared experiences. This paper concentrates on improving a standardized RTP/RTCP-based solution for IDMS. In particular, novel Early Event-Driven...

Current societal changes are transforming the way people retrieve, annotate and share media. While in the past users gathered together around media content, this has become an exception rather than the norm. As demonstrated by the popularity of social networking and personal communication tools, people expect the development of novel technologies t...

Inter-Destination Multimedia Synchronization(IDMS) is a key requirement to enable satisfying group shared media experiences. This paper presents the design and simulation of a Distributed Control Scheme (DCS) for IDMS. In this scheme, geographically dispersed receivers exchange(multicast) RTCP reports on their arrival and play out timing for RTP pa...

Currently, the media consumption paradigm is changing from a single end user to a group shared experience. Now, social communication opportunities may be exploited (e.g., conferencing while watching television), facing lots of technological (e.g., synchronization, universal session handling, scalability) and perceptual (e.g., presence awareness, Qo...

Traditionally, the media consumption model has been a passive and isolated activity. However, the advent of media streaming technologies, interactive social applications, and synchronous communications, as well as the convergence between these three developments, point to an evolution towards dynamic shared media experiences. In this new model, geo...

Inter-Destination Media Synchronization (IDMS) is a process in which various receivers of the same content are synchronized in their playout. Standardization of an IDMS solution helps to enable interoperability between receivers manufactured by different companies. This paper describes the efforts by ETSI TISPAN and by the IETF AVTCORE working grou...

Current technological advances are resulting in a complex media ecosystem, in which streaming media can reach a variety of end-devices using a heterogeneous set of delivery methods. Such development allows ubiquitous media consumption, but comes at a cost: interoperability. While users can now consume content whenever they want and wherever they ar...

Newer social multimedia applications, such as Social TV or networked multi-player games, enable independent groups (or clusters) of users to interact among themselves and share services within the context of simultaneous media content consumption. In such scenarios, concurrently synchronized playout points must be ensured so as not to degrade the u...

Nowadays, the media consumption model is changing from passive isolated activities towards dynamic group shared experiences. People separated in space can already interact and collaborate within the context of simultaneous media content delivery (e.g. they can launch a real time conversation during a shared video watching). However, to stimulate th...

Many emerging multimedia applications enable independent groups (or clusters) of consumers to interact between them and share services within the context of simultaneous media content consumption. Owing to the semantic, spatial or temporal dependency among the involved media streams, concurrently synchronized playout points must be ensured so as no...

Inter-Destination Multimedia Synchronization (IDMS) is essential in most of the emerging social multimedia applications. In this paper we present a novel Adaptive Media Playout (AMP) scheme that aims to acquire an overall synchronization status between distributed receivers by means of smoothly adjusting their playout timing. Simulation results sho...

This paper presents an enhanced version of a proposed extension of the RTP/RTCP standard protocols to acquire Inter-Destination Multimedia Synchronization (IDMS) in one-way distributed applications. Several dynamic policies for selecting the master reference play out point to synchronize are introduced and their suitability is analyzed, for specifi...

Over the last few years, the demand for real-time multimedia services has been growing progressively so that video streaming applications are expected to be dominant in future communications systems, and most of them using RTP/RTCP protocols. This paper presents an evolved tool-set for video streaming QoS evaluation in simulated environments using...

This paper proposes the radio-over-fibre transmission ultra-high definition television (UHDTV) compressed signals using WiMedia ultra-wide band (UWB) standard radio signals in fibre-to-the-home (FTTH) access networks. The integrated FTTH architecture for UWB-over-fibre distribution is proposed and analysed by simulation. The results demonstrate the...

This paper presents an accurate simulation framework for video streaming evaluation. We have designed a full RTP/RTCP implementation for NS-2 and we propose to combine it with several multimedia tools to obtain an RTP-based tool-set that allows the measurement of network-level QoS and most common video quality metrics. As RTCP feedback reporting ca...

Network simulation represents a broadly methodology for communication network performance analysis. As a system modelling approach, simulation allows to model arbitrary scenarios that many times are very difficult to implement in real platforms, or when it is intended to evaluate some alternative solutions without necessity of implementing all of t...

Multimedia services have gained an increasing interest of industry and the research community over the last decade. In this paper we present an RTP-based platform for video streaming evaluation in simulated environments. We have developed a new NS-2 module providing an accurate RTP and RTCP implementation (following strictly the RFC 3550 specificat...

En el objeto se puede apreciar el funcionamiento del algoritmo de encaminamiento dinámico, distribuido adyacente, denominado "de vector distancias" https://polimedia.upv.es/visor/?id=8bfef0e7-dc8c-714d-b7ba-be7b8804a85a

En el objeto se describe el problema conocido como 'congestión' en las redes de datos, sus causas más comunes así como las técnicas para prevenirlo. https://polimedia.upv.es/visor/?id=2e36cf54-7d75-e94e-a78f-46c036267154

En el objeto se describe el funcionamiento interno del nivel o capa de red tal y como se presenta en el modelo de interconexiónd e sistemas abiertos (OSI) de ISO. Principalmente se explican las dos estructuras internas conocidas como 'Modo Circuito Virtual' o 'Modo Datagrama', y se presenta una comparativa entre ellas https://polimedia.upv.es/visor...

En el objeto se presenta el concepto de difusión o broadcast y cinco técnicas diferentes de conseguir su propósito, indicando sus ventajas e inconvenientes. https://polimedia.upv.es/visor/?id=4b22c581-8152-cf4f-a31a-6f4057e85450

En el vídeo se presenta el funcionamiento de un teléfono convencional con todas sus partes. http://politube.upv.es/play.php?vid=3716

En el vídeo se describe la estructura jerárquica de la red telefónica así como la necesidad de la conmutación en dicha red. Se explica cómo funciona el encaminamiento de llamadas locales y de tránsito en las centrales telefónicas. http://politube.upv.es/play.php?vid=3721

En el vídeo se presenta el funcionamiento de los antiguos sistemas de conmutación electromecánica denominados 'rotary' o sistemas rotatorios http://politube.upv.es/play.php?vid=3715

En el objeto se describe la técnica de encaminamiento denominada 'por inundación', sus ventajas, inconvenientes y aplicaciones más comunes. Presenta un ejemplo muy útil de la generación de paquetes para poder entender el concepto de la eficiencia de la inundación. https://polimedia.upv.es/visor/?id=ccb2c2ef-0022-354b-9c6a-fb93a55e3e29

Nowadays, many multimedia cluster-to-cluster applications exist, such as 3D tele-immersion (3DTI), computer-supported collaborative workspaces (CSCWs), distributed multimedia presentations (DMP).... All these applications have sophisticated data transport requirements due to the use of multiple, semantically related flows of information. A synchron...

It is known that grouping nodes gives better performance to the group and to the whole system, thereby avoiding unnecessary message forwarding and additional overheads while allows to scale the network considerably. Many routing protocols for ad-hoc networks and sensor networks have been designed, but none of them is based on groups. In this paper,...

Nowadays, society makes use of new technologies as they appear. Due to this boom, the use of resources via Web is increasing notably. In of training and education cases, companies such as universities are offering tele-learning platforms to complement and facilitate the learning process. Some of these called e-learning platforms can have explanator...

This paper presents the most comprehensive analysis and comparison of the most-known multimedia group and inter-stream synchronization approaches. Several types of multimedia synchronization are identified but only inter-stream and group synchronization algorithms are considered. This is the first survey including group synchronization techniques....

In the last few years, there have appeared many studies to self-locate sensors in indoor environments. Many of them can only be used in a single room (usually when they use infrared or bluetooth technologies), others do not take care of the walls inside the buildings so they use to have tags, and even, in some of them, there is an access point in e...

One of the multimedia services offered by the campus network of the Polytechnic University of Valencia is TV over IP. This service works well in the devices connected directly to the wired network but we have detected some problems when the receivers access to the campus network through wireless IEEE 802.11, especially when devices roam across the...

Most multimedia group and inter-stream synchronization techniques define or use proprietary protocols with new control messages. Many multimedia applications have been developed using RTP/RTCP as the standard for transmission of multimedia streams over IP networks. Instead of defining a new protocol, we propose the use of RTP/RTCP to provide synchr...

Communication network topology design needs to address several conflicting requirements, such as minimizing the overall network diameter, minimizing the infrastructure cost, minimizing management cost, maximizing load distribution and so on. Centralized, decentralized, and partially centralized networks have their respective benefits as well as sev...

Many routing protocols for ad-hoc networks and sensor networks have been designed, but none of them is based on groups. It is known that grouping nodes gives better performance to the group and to the whole system, thereby avoiding unnecessary message forwarding and additional overheads. We propose an approach where the network is split into severa...

With the adoption of Ethernet-IP as the main technology for building end-to-end real-time networks, the requirement to deliver high availability, quality and secure services over Ethernet and MPLS has become strategic. Critical real-time traffic is generally penalized and the maximum restoration time of 50 msec. sometimes is exceeded because of dev...

Grouping nodes gives better performance to the whole network by diminishing the average network delay and avoiding unnecessary message forwarding and additional overhead. Many routing protocols for ad-hoc and sensor networks have been designed but none of them are based on groups. In this paper, we will start defining group-based topologies, and th...

In any type of networks a neighbour selection method is needed to form the topology of the network and to know which node the information has to be sent to reach a destination. Nowadays, several selection strategies exist that are based on different aspects and mainly designed to work in common networks. In this paper we will show our study about t...

Many routing protocols for ad-hoc and sensor networks have been designed, but none of them are based on groups. It is known that grouping nodes gives better performance to the group and to the whole system, thereby avoiding unnecessary message forwarding and additional overhead. In this paper we show the efficiency of the MANET routing protocols wh...

Most of actual multimedia tools use RTP/RTCP for inter-stream synchronization, but not for group synchronization. A new proposal of modification of RTCP packets to provide a sender-based method for synchronization of a group of receivers is described and evaluated both objectively and subjectively. The solution takes advantage of the feedback RR RT...

Many grid architectures have been developed since the first proto- grid systems in the early 70's, but there are not so many based on groups using an efficient node neighbor selection. This paper proposes a grid architecture based on groups. The architecture organizes logical connections between nodes from different groups of nodes allowing sharing...

Most of actual multimedia tools use RTP/RTCP for inter-stream synchronization, but not for group synchronization. In this paper we describe and evaluate a proposal of modification of RTCP packets to provide a sender-based method for synchronization of a group of receivers

TCP/IP protocol suite allows building multimedia networks of nodes according to nodes' content sharing. Some of them have different types of protocols (some examples given in unstructured P2P file-sharing networks are Gnutella 2, FastTrack, OpenNap, eDonkey and so on). This paper proposes a new protocol to connect disjoint multimedia networks using...

All LEO and MEO systems are based on structured topologies, where all satellites know the existence and the position of their neighbor satellites. It makes a satellite network difficult to scale and it needs many administration cost. This article describes an inter-satellite connection approach, which allows dynamic topologies with very low adminis...

TCP/IP protocol suite application layer allow grouping nodes into logical networks according to similar characteristics, functionalities or social trends. Sometimes, it is useful, or necessary, to find a way to join those autonomous logical networks. This paper describes how a group of nodes, with the same role in a network, will establish logical...

Since P2P file-sharing networks became extremely popular between Internet users, many researchers have tried to model those P2P networks. This article deals with the modeling of public domain P2P file-sharing networks in terms of some parameters such as their number of users and the number of files inside them along the time. To do so, we have been...

In this paper an analysis and comparison of multimedia synchronisation algorithms is presented. After presenting the three types of multimedia synchronisation (intra-stream, inter-stream and group synchronisation), only inter-stream and group synchronisation algorithms are considered. The main synchronisation techniques included in most of the anal...

Partially decentralized P2P (PDP2P) networks are a subset of P2P networks. Roles of nodes are different according to their functionality in the network. Nowadays, there are many PDP2P networks, with different characteristics. It is necessary to find a way to join those autonomous networks. We have not found any interconnection system, so in this ar...

[Spanish abstract] En este trabajo se realiza un análisis, búsqueda de soluciones y posterior uso de éstas para implantar una política de seguridad que garantice la protección de datos de los usuarios de terminales u ordenadores de uso público con conexión a Internet. Como ejemplo de éstos, existen los terminales de automatrícula de las universidad...

Actually, all LEO systems are based on structured topologies, where all satellites know the existence and the position of the neighbour satellites. It makes a satellite network difficult to scale and it needs many administration cost. This article describes a novel Inter-satellite P2P system, which allows a dynamic topology with very low administra...

There are several leaning methodologies for practical classes in existence. It is important to motivate the students and to highlight the importance of doing practices related with the theory learned at the classroom. This article shows a practical methodology based on project learning. Students face up with real situations that could be in real Wo...

A large number of real-time distributed multimedia applications have already been developed using Real-Time Transport Protocol (RTP), but all of them for continuous media streams, such as audio and video. Nevertheless, in those applications, non-continuous media streams (text, data from sensors, pointer coordinates, etc.), also coexist with audio a...

Since the Communications and Information Technology appearance, and specially the multimedia applications, educators have started to use them to improve their classes. This paper deals with the use of multimedia applications, concretely Flash activities, to reinforce the knowledge of the students in the matter that have been taught in the previous...

En esta Tesis se presenta un algoritmo de sincronización de grupo de flujos multimedia, basado en técnicas de realimentación y la utilización de una referencia de tiempo global común a todos los sistemas involucrados en una aplicación multimedia. Dicho algoritmo trata de solucionar el problema de la sincronización de grupo de flujos en aplicaciones...

En el objeto se presentan los servicios ofrecidos por el nivel de red al nivel de transporte del modelo OSI. Se describen y comparan los servicios con conexión y sin conexión. https://polimedia.upv.es/visor/?id=3eb9176d-1234-b645-9c02-dc1afbbf8878

El artículo presenta una plataforma de desarrollo de cursos interactivos de autoaprendizaje en soporte informático para alumnos no presenciales y de repaso para los presenciales. Está basado en un programa modular que presenta al alumno la información de los cursos, accesible por unidades temáticas. Cada unidad consta de una introducción, diversos...

Describe el algoritmo de búsqueda de rutas óptimas creado por Dijkstra, con una presentación con una secuencia del cálculo efectuado https://polimedia.upv.es/visor/?id=05a3ee66-a3b2-2845-9030-900652c57ed3