Javier Carmona-Murillo

Verified

Javier verified their affiliation via an institutional email.

Learn more

Verified

Javier verified their affiliation via an institutional email.

Learn more

• PhD
• Associate Professor at University of Extremadura

The evolution of mobile networks, from their inception to the latest 5G and envisioned 6G technologies, underscores a relentless pursuit of enhanced performance and connectivity. Amidst this technological advancement, the need for energy efficiency has become increasingly pronounced, given the environmental and operational costs associated with sca...

In an increasingly interconnected world, there is an emerging demand for new applications and services from wireless networks that are therefore under continuous technological developments to cope with them. One of the enabling technologies for the next generations of these networks (5G/6G) lies in deploying a high number of base stations in the wo...

The rising concerns about climate change motivate the industry and academia to actively work on techniques and strategies that help reduce energy consumption in mobile networks. One avenue under exploration involves methods for intelligently and temporarily deactivating serving cells during low-traffic periods. However, cell switch-off (CSO) decisi...

The rapid evolution of mobile communications, remarkably the fifth generation (5G) and research-stage sixth (6G), highlights the need for numerous heterogeneous base stations to meet high demands. However, the deployment of many base stations entails a high energy cost, which contradicts the concept of green networks promoted by next-generation net...

With the advent of next-generation networks, it is crucial to persist in the research and development of key enabling technologies such as software-defined networking (SDN). This involves assessing prospective network deployments, mechanisms, or ideas; an undertaking performed by both network operators and academia to assess the advantages and limi...

El despliegue de redes 5G ha llevado a la comunidad investigadora y a la industria a establecer cuáles serán los pilares de la nueva generación de redes móviles. Entre estos pilares se incluyen los sistemas autónomos que proporcionan inteligencia a la red en tareas de gestión y seguridad, como son, entre otros, los mecanismos para caracterizar el t...

Public sector organizations are facing an escalating challenge with the increasing volume and complexity of cyberattacks, which disrupt essential public services and jeopardize citizen data and privacy. Effective cybersecurity management has become an urgent necessity. To combat these threats comprehensively, the active involvement of all functiona...

The ultra-dense deployment of small base stations is one of the enabling technologies for the next generation of mobile networks (5G and 6G), which leads to an increase in the energy consumption of the infrastructure. This work addresses the selective switch-off of these base stations as a multi-objective optimization problem and analyzes its impac...

Estar conectado a través de redes de telecomunicaciones rápidas y confiables se ha convertido en una necesidad básica en las sociedades actuales. Sin embargo, el diseño y operación de esta red para maximizar la calidad del servicio brindada a los ciudadanos no es un tema trivial. En este sentido, en este artículo se proponen aproximaciones lineales...

Featured Application This study holds direct applicability for organizations seeking to establish comprehensive, tactical, and operational cybersecurity management, especially within the CyberTOMP framework. In order to achieve this objective, the concerned organization will need to achieve consensus among all functional domains involved in cyberse...

The massive deployment of base stations is one of the key pillars of the fifth generation (5G) of mobile communications. However, this network densification entails high energy consumption that must be addressed to enhance the sustainability of this industry. This work faces this problem from a multi-objective optimization perspective, in which bot...

The continuous increase in the number of devices connected to the Internet, together with the growth of applications and services, has made the tasks of network traffic analysis and classification essential in any environment. The deployment of 5G networks has prompted the research community to establish the pillars of Next-Generation Networks. The...

The massive deployment of small base stations is one of the main pillars for the new generations of mobile networks to meet the expected growing in data traffic demands. This densification entails high energy consumption that needs to be minimized to ensure system sustainability in a context of reduced environmental impact. To address this issue, o...

5G is expected to support new services and applications that will change the user experience and will drive to a new business landscape. Moreover, most of the services will require optimum connectivity and seamless mobility in heterogeneous networks. To cope with these challenges, network mobility management and network densification are envisioned...

A 3-D printed Fresnel-lens antenna formed by dielectric unit cells insensitive to polarization is presented in this article. The proposed unit cell can be implemented in any azimuth orientation, simplifying the design and the implementation of the Fresnel subzones, which is an advantage over the previous 3-D-printed Fresnel-lens designs. The unit c...

The exponentially growing trend of Internet-connected devices and the development of new applications have led to an increase in demands and data rates flowing over cellular networks. If this continues to have the same tendency, the classification of 5G services must evolve to encompass emerging communications. The advent of the 6G Communications c...

Currently different reference models are used to manage cybersecurity, although practically none are applicable “as is” to lower levels as they do not detail specific procedural aspects for them. However, they urge organizations to develop a methodological foundation to manage cybersecurity at those levels. Although they allow organizations to adhe...

Distributed MIMO (D-MIMO) systems are expected to play a key role in deployments for future mobile communications. Together with massive MIMO technology, D-MIMO aims to maximize the spectral efficiency and data rate in mobile networks. This paper proposes a deep study on the spectral efficiency of D-MIMO systems for essential channel parameters, su...

El despliegue masivo de estaciones base es uno de los pilares básicos para que las nuevas generaciones de redes móviles satisfagan las elevadas demandas de muchas aplicaciones actuales. Esta densificación conlleva, no obstante, un elevado consumo energético que ha de ser minimizado para garantizar la sostenibilidad del sistema en un claro contexto...

Currently, network operators are receiving an avalanche of data due to the increasing number of mobile network subscribers, network services and device signalling. This trend will be increased with the deployment of 5G that will provide advanced connectivity to wireless devices and develop new services. Network analytics must allow telecommunicatio...

Mobile communications are growing and the number of users is constantly increasing at an accelerated rate, as well as the demand for the services they request. In the last few years, many efforts have focused on the design and deployment of the new fifth generation (5G) cellular networks. However, novel highly demanding applications, which are alre...

With the continuous development of mobile communications and the Internet of Things technology, the enhanced network performance can be seen as one of the major challenges in the fourth industrial revolution context, where new services and applications with strict performance requirements have emerged, such as driverless vehicles, smart cities, fac...

The expected advent of the Internet of Things (IoT) has triggered a large demand of embedded devices, which envisions the autonomous interaction of sensors and actuators while offering all sort of smart services. However, these IoT devices are limited in computation, storage, and network capacity, which makes them easy to hack and compromise. To ac...

The exponential growth in the number of mobile subscribers, as well as the data traffic generated by them is showing a major challenge in wireless Internet. Existing mobile networks are starting to be insufficient in meeting this demand, in part due to their inflexible and expensive equipment as well as complex and non-agile control plane. In this...

The number of mobile subscribers, as well as the data traffic generated by them, is increasing exponentially with the growth of wireless smart devices and the number of network services that they can support. This significant growth is pushing mobile network operators towards new solutions to improve their network performance and efficiency. Thus,...

Mobile Internet data traffic has experienced an exponential growth over the last few years due to the rise of demanding multimedia content applications and the increasing number of smart mobile devices. Seamless mobility support at the network level is envisioned as a key architectural requirement to deal with the ever increasing demand for data an...

Mobile Internet data traffic has experienced an exponential growth over the last few years due to the rise of demanding multimedia content and the increasing number of mobile devices. Seamless mobility support at the IP level is envisioned as a key architectural requirement in order to deal with the ever-increasing demand for data and to efficientl...

In recent years, the growth the in the number of heterogeneous interconnected systems, as well as the emergence of new requirements in applications and services are progressively changing the original simplicity and transparency of the Internet architecture. When this architecture was designed, the main goal was to interconnect stationary host. The...

Mobile data traffic in the Internet has experienced an exponential growth due to the widespread presence of multimedia capable mobile devices and the deployment of multiple wireless networks. With this continuous development of mobile communications, the achievement of an efficient IP mobility management protocol has revealed as one of the major ch...

In order to motivate the students in a Problem Based Learning environment, two different strategies are analyzed. The first one consists in introducing two crosscutting issues such as the ecology and the study of patents. In that strategy, the students need to solve the activities taking in account this “green component” to obtain the best solution...

The rapid progress made in mobile device technologies has implied that the access network must evolute and develop new strategies to satisfy the requirements of the users. Heterogeneous network (HetNet) allows for a flexible deployment strategy and offers economically viable solutions to improve network scalability and indoor coverage. This emergin...

New kinds of services and data flows, such as cloud computing, server virtualization, or quality of service (QoS)-aware Internet services, have led to higher demands on network resources. Thus, they have also led to increased bandwidth consumption and unexpected congestion, especially in backbones. In this article a novel proposal is studied, with...

With the continuous development of mobile communications over the past few years, the achievement of an efficient IP mobility management has revealed as one of the major challenges in next-generation wireless networks. For this reason, the Internet Engineering Task Force developed various centralized mobility protocols where all intelligence is con...

The Problem Based Learning methodology is increasing its popularity day by day. Nowadays, a lot of Universities implement this methodology to develop the skills of their students. Moreover, it is known that in PBL activities, the quality of the problem is a key challenge to achieve the learning objectives. Both the design and interest of the proble...

In recent years, the growth the in number of heterogeneous interconnected systems, as well as the emergence of new requirements in applications and services are progressively changing the original simplicity and transparency of the Internet architecture. When this architecture was designed, the main goal was to interconnect stationary host. Therefo...

SUMMARY Over the last few years, mobility management in the Internet has been one of the most active fields in communications. The recent increasing mobile traffic demand is having an important impact on the design of mobile networks and some limitations are arising from traditional network deployments. In order to deal with this new scenario, mobi...

SUMMARY The emergence of new kinds of applications and technologies (e.g., data-intensive applications, server virtualization, and big data technology) has led to a higher utilization of network resources. These services imply increased bandwidth consumption and unexpected congestions, especially in backbones. In this article, a novel proposal is s...

The new context of the European Space of Higher Education and the current social environment marked by new technologies implies that new Telecommunication Engineers must be trained not only in technical knowledge but also in the professional skills that they must use in their professional lives. Some learning methodologies, such as Project-Based Le...

Two of the major challenges for next-generation mobile systems are to achieve seamless mobility management in next generation wireless networks and to manage resources efficiently given the exponential growth that mobile data traffic has experienced over the last few years. To track host mobility, the IETF has made important efforts to develop mobi...

The integration of Mobile and Fixed Networks is one of the most important topics in the Future Internet development and an open issue for network providers. This topic is known as Fixed Mobile Convergence (FMC). The convergence looks for the integration and the creation of a unified infrastructure from fixed and wireless mobile networks. In this ca...

Mobility management and quality of service (QoS) are two of the most important goals in the present and future development of wireless networks. These tasks involve not only the wireless domain but also the access network that interconnects mobile devices with the Internet. This emerging topic is known as fixed mobile convergence. The intention of...

The context of the European Space of Higher implies new Telecommunication Engineers trained in technical knowledge and professional skills. Problem-Based Learning and Project-Based Learning (PBL) are appropriate to achieve an effective learning of these skills. This paper presents a design of project-based learning course in Telecommunications Engi...

The development of skills through active learning methodologies has been demonstrated to be appropriate in environments where students must acquire particular professional capacities. Problem-Based Learning (PBL) embeds strudents' learning processes in real-life problems so, they can integrate different subjects in a common project that they need t...

This paper presents the teaching innovation project which it is being developed in the field of Information and Communications Technology. This project has 6 different subprojects to be performed. It also develops the current situation that exists in our university and the objectives to be corrected by this project. The objectives to be achieved th...

The integration of Mobile and Fixed Network is one of the most important topics in the Future Internet development and an open issue for network providers. In this case, mobility management and Quality of Service (QoS) are two of the main goals in this integration. These tasks are an important challenge if the mobility rate is very high. In this pa...

One of the major challenges for next-generation mobile systems is to achieve efficient mobility management in next generation wireless networks. To track host mobility, Mobile IP setup a tunnel between the Home Agent and the Mobile Node. This paper proposes a new architecture called LinkWork Mobile MPLS which takes advantage of MPLS traffic enginee...

Current developments of mobile communication technologies allow the creation of solutions for health services and online monitoring that were not available in the past. These technologies can be used to improve quality of life of patients who suffer from chronic diseases, their relatives and their caregivers. By making monitoring tests in their own...

Due to the high growth of mobile networks and portable devices, learning process is evolving from desktop computer to mobile devices. In this sense, technologies and services that support this change are also evolving. The appearance of portable devices has made users to take part in this process from anywhere. On the other hand, architectures used...

Nowadays, mobility offers potential opportunities for student’s learning. The well-known paradigm “learning anywhere anytime” is possible thanks to mobile terminals and wireless technologies that solve the limited access of wired technologies for usage due to lack of mobility. In this scenario, many projects are dealing with the use of mobility to...

ABStractDue to the high growth of mobile networks and portable devices, learning process is evolving from desktop computer to mobile devices. In this sense, technologies and services that support this change are also evolving. The appearance of portable devices has made users to take part in this process from anywhere. On the other hand, architectu...

Nowadays, wireless technologies are continuously in expansion and make more comfortable people life in many ways. Technologies like Wi-Fi, Bluetooth or IrDA are well known to everyone. This is a consequence of the benefits that they offer to the society: global Internet access, files sharing without wires, etc. But, there is a problem related to th...

Nowadays, mobile communications face new challenges in its evolution: The convergence of wireless cellular networking and TCP/IP architecture. In addition, Internet protocols do not support mobility, so different mechanisms to offer seamless mobility have been proposed. The fourth generation (4G) IP-based wireless networks have lead IP level the id...

Nowadays, multiple services are being offered over the Internet next generation infrastructure. Most of these services are causing important social changes: online collaboration, e-commerce, e-vote, knowledge sharing, etc. Future technical leaders should learn about the impact of their activities on the society and not only about the usual economic...

Nowadays multimedia communications are changing very fast; VoIP, TV over IP, Videoconference… For this reason, new protocols are being developed to afford a better transmission over Internet. Some other mature protocols as Multicasting were discarded by those new protocols even though the benefit provided by those mature protocols. In this way VLin...