Iván Vidal

• PhD
• Professor at University Carlos III de Madrid

This paper presents an early exploration and preliminary results on the use of Remotely Piloted Aircrafts (RPA) as 5G points of presence. The use of RPAs in the 5G arena would enable a cost-effective deployment of functions over mobile nodes that could be integrated on demand into the programmable and unified 5G infrastructure, enhancing the capaci...

This paper explores the use of Information-Centric Networking (ICN) to support management operations in IoT deployments, presenting the design of a flexible architecture that allows the appropriate operation of IoT devices within a delimited ICN network domain. Our architecture has been designed with special consideration to naming, interoperation,...

In this article we present a novel solution to transfer users between IMS network elements. This solution enables a home operator to perform an appropriate redistribution of load among the call session control functions of the IMS, which can be deployed as virtualized network functions or over dedicated machines. This way, the operator is enabled t...

Remotely piloted aircraft systems (RPASs) are gaining more are more relevance during the last decade since more applications are being enabled by lighter planes with increasing autonomy, higher ceilings, and more powerful transmission technologies. The integration of the RPAS as part of network-centric warfare would be a very important milestone to...

In recent years, IPTV has received an increasing amount of interest from the industry, commercial providers and the research community, alike. In this context, standardization bodies, such as ETSI and ITU-T, are specifying the architecture of IPTV systems based on IP multicast. An interesting alternative to support the IPTV service delivery relies...

The advent of softwarization and disaggregated architectures has transformed modern communication networks, sparking innovation by separating network functionalities from the underlying hardware. Following this trend, in future quantum networks, the virtualization and softwarization of critical components will be essential to achieve global interop...

Quantum technologies promise major advances in different areas. From computation to sensing or telecommunications, quantum implementations could bring significant improvements to these fields, arousing the interest of researchers, companies, and governments. In particular, the deployment of Quantum Key Distribution (QKD) networks, which enable the...

Network performance monitoring is a crucial aspect in order to maintain reliable and efficient communications between different hosts and clusters. This is becoming more relevant as companies are progressively moving towards cloud-native environments, where hyperconnected islands are deployed. While monitoring for individual clusters and components...

Microservices have become promising candidates for the deployment of network and vertical functions in the fifth generation of mobile networks. However, microservice platforms like Kubernetes use a flat networking approach towards the connectivity of virtualised workloads, which prevents the deployment of network functions on isolated network segme...

The revolution of Remotely Piloted Aircraft Systems (RPASs), both in the commercial and the research field, has accelerated the arrival of innovative and complex services to the civilian environment within non-segregated airspace. The extensive deployment of these services will still require solving relevant challenges in several topics, such as re...

Network Functions Virtualization (NFV) is a fundamental enabler in 5G networks, automating service deployment through softwarization and virtualization. However, challenges remain in providing network connectivity to service components, commonly referred to as Virtual Network Functions (VNFs), deployed on different domains. A usual approach to enab...

Microservice platforms have brought many advantages to support the deployment of light-weight applications at both near the edge and data centers. Still, their suitability to support telecommunication and vertical services beyond the network edge is far from being a reality. On one hand, their flat networking approach does not support the establish...

Recent efforts to manage Unmanned Aerial Vehicle (UAV) operations in European civilian environments have resulted in the development of U-space, the European Union’s UAS Traffic Management (UTM) concept of operations. This paper presents the primary purposes of the H2020 Labyrinth project (mainly focusing on the communications architecture), which...

Network Functions Virtualization (NFV) is a key technology for network automation and has been instrumental to materialize the disruptive view of 5G and beyond mobile networks. In particular, 5G embraces NFV to support the automated and agile provision of telecommunication and vertical services as a composition of versatile virtualized components,...

The Unmanned Aircraft System (UAS) ecosystem is exponentially growing in both recreational and professional fields to provide novel services and applications to consumers from multiple engineering fields. However, this technology has only scraped the surface of its potential, especially in those cases that require fast reaction times. Accordingly,...

Presently, a significant part of the world population does not have Internet access. The fifth-generation cellular network technology evolution (5G) is focused on reducing latency, increasing the available bandwidth, and enhancing network performance. However, researchers and companies have not invested enough effort into the deployment of the Inte...

5G communications have become an enabler for the creation of new and more complex networking scenarios, bringing together different vertical ecosystems. Such behavior has been fostered by the network function virtualization (NFV) concept, where the orchestration and virtualization capabilities allow the possibility of dynamically supplying network...

Network Function Virtualization (NFV) has been regarded as one of the key enablers for the 5th Generation of mobile networks, or 5G. This paradigm allows to reduce the dependence on specialized hardware to deploy telecommunications and vertical services. To this purpose, it relies on virtualization techniques to softwarize network functions, simpli...

Fifth-generation (5G) networks are envisioned to simultaneously support several services with different connectivity requirements. In this respect, service creation time is a key performance indicator (KPI) for service providers when planning the migration to 5G. For example, the European 5G infrastructure public private partnership (5G-PPP) sugges...

With the advent of 5G technologies, vertical markets have been placed at the forefront, as fundamental drivers and adopters of technical developments and new business models. Small Unmanned Aerial Vehicles (SUAVs) are gaining traction in multiple vertical sectors, as key assets to generate, process, and distribute relevant information for the provi...

Nowadays, Unmanned Aerial Vehicles (UAV) are frequently present in the civilian environment. However, proper implementations of different solutions based on these aircraft still face important challenges. This article deals with multi-UAV systems, forming aerial networks, mainly employed to provide Internet connectivity and different network servic...

The next generation of mobile communication system will allow a plethora of new services and use cases. By offering support for high throughput connections, low latency response and massive number of connections, the fifth generation of the mobile network will trigger applications unseen in any other network. However, one important application scen...

In this paper, we identify the main challenges and problems related with the management and orchestration of Virtualized Network Functions (VNFs) over aerial networks built with Small Unmanned Aerial Vehicles (SUAVs). Our analysis starts from a reference scenario, where several SUAVs are deployed over a delimited geographic area, and provide a mobi...

Unmanned Aerial Vehicles (UAVs) have progressively been integrated into people lives during the last years. It is quite common now to see UAVs flying in the countryside doing field inspection, in highways for traffic control operations, or above stadiums in sport and music events. It is also common to see spectacular UAV swarm showcases (in most ca...

This article addresses one of the main challenges related to the practical deployment of Internet of Things (IoT) solutions: the coordinated operation of entities at different infrastructures to support the automated orchestration of end-to-end Internet of Things services. This idea is referred to as “Internet of Things slicing” and is based on the...

Advanced communication networks, such as 5G and beyond, will be a complex ecosystem made of multiple physically interconnected elements, implying that the upcoming network will have to address capabilities such as flexibility, programmability and extensibility. This article, describes an Open and Extensible 5G Network Function Virtualization (NFV)...

The fifth generation of mobile networks (5G) is expected to provide diverse and stringent improvements such as greater connectivity, bandwidth, throughput, availability, improved coverage, and lower latency. Considering this, drones or Unmanned Aerial Vehicles (UAVs) and Internet of Things (IoT) devices are perfect examples of existing technology t...

* Provides a survey on the technologies, protocols and architectures that are widely used in practice to implement networked multimedia services. * Presents the background and basic concepts behind multimedia networking, and provides a detailed analysis of how multimedia services work, reviewing the diverse network protocols that are of common use...

Management and orchestration of virtual resources and functions, commonly referred to as MANO, are key functionalities of NFV environments. This article describes the design and deployment of the NFV MANO platform of 5TONIC, the open research and innovation laboratory on 5G technologies founded by Telefonica and IMDEA Networks. This NFV MANO platfo...

In this paper, we present a practical solution to support the adaptable and automated deployment of applications of Small Unmanned Aerial Vehicles (SUAVs). Our solution is based on virtualization technologies, and considers SUAVs as programmable network platforms capable of executing virtual functions and services, which may be dynamically selected...

We claim the strong potential of data-centric communications in Unmanned Aircraft Systems (UAS), as a suitable paradigm to enhance collaborative operations via efficient information sharing, as well as to build systems supporting flexible mission objectives. In particular, this paper analyzes the primary contributions to data dissemination in UAS t...

In this paper, we explore the strong potential of Network Function Virtualization (NFV) technologies to enable multi-mission small unmanned aircraft systems. In this context, we analyze the main challenges of using NFV technologies in this emergent field, and we present the design of an NFV system that supports the flexible, automated and cost-effe...

Emerging technological devices, such as Unmanned Aircraft Vehicles (UAV) and Single Board Computers (SBC), are being increasingly employed in recent years, thanks to the advances in electronics and the wide variety of sensors that are endowed. This paper aims at analyzing the viability of deploying multimedia services, focusing on the voice scenari...

The evolution of the Internet has resulted in the deployment of new application-level solutions to enhance the scalability and efficiency of content dissemination (e.g., content delivery networks and peer-to-peer systems). However, despite of this improvement on performance, the utilization of this type of solutions introduces new security concerns...

This paper presents an early exploration and preliminary results on the use of Remotely Piloted Aircrafts (RPA) as 5G points of presence. The use of RPAs in the 5G arena would enable a cost-effective deployment of functions over mobile nodes that could be integrated on demand into the programmable and unified 5G infrastructure, enhancing the capaci...

Content-Centric Networking (CCN) is a new paradigm where caching techniques play an important role. This is motivated by the addition of memory to core routers allowing to store the content traversing them. In this environment, several techniques have been proposed to increase the performance of the cache, and most of them are based on well-known i...

In this paper, we first further investigate the use of random decision policies for caching schemes, or probabilistic caching, in Content-Centric Networking (CCN). Our main objective is to provide a mathematical model for the combination of random cache decision and least recently used (LRU) replacement policy in the content store of CCN, called LR...

Content-Centric Networking (CCN) is a clean-slate proposal to redesign the current Internet by focusing on the content itself, instead of the classical computer-to-computer communication. In this paper we address scalability issues of the Forwarding Information Base (FIB) in CCN. Our solution proposes both the use of hierarchical names assigned by...

The Interleaved Polling with Adapted Cycle Times (IPACT) algorithm for dynamic bandwidth allocation proposed for Ethernet Passive Optical Networks (EPONs), have been deeply analysed in the literature under Poisson traffic. However, the case when ONUs suddenly offer bursty traffic in the upstream channel of a PON has not been considered in such deta...

Current Internet of Things (IoT) deployments, due to the plethora of devices, protocols, services and architectural instantiations, pose a considerable set of challenges to the Internet fabric as we know it. In parallel, the ever-growing integration of on-line services into everyday aspects of our society have contributed to an increasing shift of...

The IP Multimedia Subsystem (IMS) is considered as the common platform for providing a unified session control on top of various access network technologies for multimedia applications. At the same time, we are witnessing how wireless technologies become an integral part of our daily life, due to an increasing number of mobile multi-interface devic...

El MILANO es un sistema estratégico desarrollado por el Instituto Nacional de Técnica Aeroespacial (INTA) capaz de realizar misiones de reconocimiento, vigilancia y adquisición de blancos utilizando UAV (vehículos aéreos no tripulados). Los aviones son capaces de realizar operaciones a una altitud media (7.000 m) durante prolongados periodos de tie...

This paper presents TRIM+, an architecture for transparent mobility management with route optimization in IMS based networks. The design of our architecture is based on a previous work referred to as TRIM. TRIM was originally devised to provide transparent mobility support in the IMS, although transparency came at the cost of using a suboptimal dat...

Cellular network operators are striving to solve the problem caused by the increasing volume of traffic over their networks. Given the proliferation of multi-interface devices, offloading part of the traffic to available access networks (e.g., WiFi or 3G access networks, even from other operators) seems to be a promising alternative. Here, we propo...

The ongoing changes in the way we use the Internet are motivating the definition of new information-distributing designs for an interworking layer. Recently, information-centric networking (ICN) concepts have defined mechanisms focusing on what information to get rather than where it is located. However, the still unfledged architectures instantiat...

Internet Protocol-based television (IPTV) concerns video entertainment and represents a solution for interactive television-like services over IP-based networks. Operators and vendors are currently working on IPTV standardization efforts (e.g., ATIS/IIF, ITU-T IPTV-GSI, ETSI TISPAN) to bear wider availability and interoperability of IPTV as a secur...

In recent years, the development and deployment of new wired and wireless access network technologies have made the ubiquitous Internet a reality. Users can access anywhere and anytime to the broad set of value-added Internet services, which are delivered by means of the IP protocol. In this context, 3GPP is currently developing the IP Multimedia S...

Already a popular application in the Internet, IPTV is becoming, among the service providers, a preferred alternative to conventional broadcasting technologies. Since many of the existing deployments have been done within the safe harbor of telco-owned networks, IP multicast has been the desired streaming solution. However, previous studies showed...

Telecommunication networks are converging towards an all-IP paradigm that integrates a broad set of value-added services. In this context, the IP Multimedia Subsystem (IMS) is being developed by the 3GPP as a key element to achieve the convergence. Additionally, multiparty services are nowadays acquiring an increasing interest from the industry. In...

Multipath TCP (MPTCP) is a new protocol being developed in the IETF's MPTCP working group in order to provide higher communication availability and to improve the throughput between two multi-addressed endpoints by using multiple paths. Due to the multipath nature and specifically its path management, some new security threats arise apart from thos...

Nowadays IPTV services are gaining attention from both providers and end users. There is a large effort toward the integration of these services into emerging next-generation network architectures. In particular, one of the most relevant solutions is being proposed by ETSI-TISPAN and is based on the IP multimedia subsystem. This article focuses on...

Home networks and home environments are developing so fast that a new generation of residential gateways is needed in order to allow emerging services and the huge amount of available bandwidth to take advantage of this evolution. New protocols, applications, devices and services are appearing day after day and in order to properly cope with them,...

This paper proposes a peer-to-peer video stream- ing delivery system within the framework of Next Generation Networks using Application Level Multicast. Increased effi- ciency and reliability is achieved in two ways. First, the system uses path diversity by splitting the video traffic in several stripes and distributing each stripe via different mu...

During these last years the Internet Protocol Television (IPTV) service and the different peer-to-peer (P2P) technologies have generated an increasing interest for the developers and the research community that find in them the solution to deal with the scalability problem of media streaming and reducing costs at the same time. However, despite of...

During the last years next generation networks (NGNs) have gained attention, as an increasing number of network operators moved toward triple-play services: telephony, Internet and IPTV. Unfortunately, from the service provider perspective, IPTV usually comes at a high cost in terms of equipment and/or necessary bandwidth. In this paper we propose...

It is sometimes believed that a "broadband access" network, providing ample transmission capacity to residential environments, is enough so as to allow a flawless delivery of advanced services. However, the provisioning of a combination of multiple services with guaranteed quality up to the end-user terminal requires a carefully designed architectu...

The standardization process of the UMTS technology has led to the development of the IP Multimedia Subsystem (IMS). IMS provides a framework that supports the negotiation of the next generation multimedia services with QoS requirements that are envisioned for 3G networks. But even though many of these services involve the participation of multiple...

To date, broadcasting traffic data represents a low percentage of the total traffic in the Internet when compared to other kinds of information. This may be caused by difficulties with multicast transmissions (i.e filtering by ISPs), low bandwidth rates in the last mile access, quality of service (QoS) and the use of Network Address Translation (NA...

The TISPAN group from ETSI is currently working on the specification a Next Generation Network (NGN), based on the IP Multimedia Subsystem (IMS) as the service control architecture. This NGN provide a extensible platform that supports the delivering of next generation multimedia services with QoS requirements over multiple access network technologi...

The development of specifications for next generation networks has introduced a new network paradigm that has features and capabilities to ensure the provisioning of new value-added multimedia services over the broadband access technologies that are currently being deployed in the market. In this respect, the TISPAN group from ETSI is working in th...

Internet access has been, until now, the main driver for the generalization of broadband connections in the residential market. Simple IP based services like email and web browsing were, during many years, the typical services provided to residential customers. Today the telecommunications market is changing and operators are looking for ways to pr...

It is sometimes believed that a “broadband access” network, providing ample transmission capacity to residential environments, is enough so as to allow a flawless delivery of advanced services. However, the provisioning of a combination of multiple services with guaranteed quality up to the end-user terminal requires a carefully designed architectu...

Residential Gateways are key elements in order to be able to connect future advanced home environment with next generation networks such as the ones being defined by TISPAN NGN specification. A broadband multi-service and multi-provider enabled Residential Gateway that is capable of supporting an end to end QoS environment (from the end user termin...

The TISPAN workgroup inside ETSI is currently working on accommodating the IMS (IP Multimedia Subsystem) architecture, which has been created for the mobile world, to the fixed scenario where there is a new important element to be taken into account: the Residential Gateway (RGW). This element is typically considered as a customer device where prov...

Resumen Habitualmente se considera que un acceso de banda ancha que proporciona una gran capacidad de transmisión tanto a entornos de negocio como a entornos residenciales, es suficiente como para distribuir servicios avanzados de calidad. Sin embargo ni las redes de acceso están aún lo suficientemente evolucionadas como para soportar todo tipo de...

Publicado

Resumen Mobile ad-hoc networks are currently one of the most important research subjects, due to the huge variety of applications (military, emergence, industry, private use, etc...). However different services available at traditional networks now become an unavoidable task that must be solved. This paper reviews current researches on three of the...

The notorious enhancement in the access speed that residential environments are nowadays experiencing has created a new scenario for service delivery that goes far beyond the best effort deployment of Web browsing or email services. This scenario demands the provisioning of real end to end quality of service from the user terminal located in the re...

This paper presents a complete and integrated demo scenario through which an access platform and residential gateway prototypes, both developed under the scope of MUSE project, will be shown. The paper also intends to clearly expose the innovative aspects of each one of the prototypes. 1 Introduction Internet access has been, until now, the main dr...

Todate, broadcasting traffic datarepresents alowpercent- ageofthetotal traffic intheInternet whencompared tootherkindsof information. Thismaybecaused bydifficulties withmulticast transmis- sions(i.e filtering byISPs), lowbandwidth rates inthelast mileaccess, quality ofservice (QoS)andtheuseofNetworkAddress Translation (NAT)boxesinSME'sandhomeoffice...

Resumen Hoy en día existen numerosas iniciativas de investigación en el campo de las redes de próxima generación, con el principal objetivo de integrar las diferentes tecnologías de acceso actualmente desplegadas en el mercado para proporcionar servicios Triple Play (voz, video y datos). A este respecto, el grupo TISPAN, dentro de ETSI, está trabaj...

Los dispositivos de comunicaci´ on de datos mejoran sus funcionalidades d´ ia tras d´ ia. Con cada nuevo equipo, el usuario debe aprender a configurarlos, administrarlos, car gar nuevas actualizaciones y cuando se requiere una nueva fun- cionalidad no soportada por dicho equipo, cambiarlo por uno nuevo. Hoy en d´ ia, configurar un modem-router xDSL...

El Gobierno de la Comunidad de Madrid, y en concreto su Dirección General de Universidades e Investigación, ha financiado la creación de una de las redes de investigación más avanzadas tecnológicamente de Europa: la Red Telemática de Investigación de Madrid, REDIMadrid, eligiendo a la Fundación Madri+d para el Conocimiento como la entidad responsab...

El proceso de estandarización de la tecnología UMTS como estándar global 3G ha resultado en el desarrollo del Subsistema Multimedia IP (IP Multimedia Subsystem, IMS). IMS es una arquitectura de control, basada en el protocolo IP, que proporciona un conjunto de funcionalidades que resultan esenciales en la provisión de los servicios multimedia de va...