Jaime Galán-Jiménez

Jaime Galán-Jiménez
Universidad de Extremadura | UNEX · Department of Computer Systems and Telematics Engineering

PhD

About

69
Publications
12,866
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
265
Citations
Additional affiliations
October 2012 - present
Universidad de Extremadura
Position
  • Lecturer
September 2009 - September 2012
Universidad de Extremadura
Position
  • Researcher

Publications

Publications (69)
Article
Service Function Chaining (SFC) paradigm improves network capabilities thanks to the support of application-driven-networking, which is realized through the invocation of an ordered set of Service Functions (SFs). The programmability and flexibility provided by emerging technologies such as Software-Defined Networking (SDN) and Network Function Vir...
Article
The advent of the Software Defined Networking (SDN) paradigm represents a great opportunity for the definition of new network management solutions. In this work, we focus on the definition and implementation of a novel technique to solve the Traffic Matrix Assessment (TMA) problem from the perspective of an Internet Service Provider. Since the migr...
Article
Full-text available
During last years, huge efforts have been done to reduce the Information and Communication Technology (ICT) sector energy consumption due to its impact on the carbon footprint; in particular, the one coming from networking equipment. Although the irruption of programmable and softwarized networks has open new perspectives to improve the energy-effi...
Article
Full-text available
Software-Defined Networking (SDN) is a paradigm that provides flexibility and programmability to computer networks. By introducing SDN nodes in a legacy IP network topology, network operators can benefit on higher control over the infrastructure. However, this migration is not a fast or straightforward process. Furthermore, to provide an adequate q...
Article
Full-text available
There are contexts where TCP/IP is not suitable for performing data transmission due to long delays, timeouts, network partitioning, and interruptions. In these scenarios, mobile opportunistic networks (MONs) are a valid option, providing asynchronous transmissions in dynamic topologies. These architectures exploit physical encounters and persisten...
Chapter
Loneliness among ageing people has become a significant issue for society. Its impact on health can even be exacerbated in isolated rural areas. Furthermore, the lack of Internet connection is common for these areas, contributing to such isolation. Considering this, it is important to proactively detect ageing people who experience loneliness. In t...
Chapter
Full-text available
Software-Defined Networking (SDN) is already a well-established networking paradigm. It has a successful story of implementation in the data center network, while its implementation in telecommunications (Telco) and Internet service provider (ISP) networks Worldwide is an ongoing research and implementation. The bigger paradigm shifts in network op...
Article
The advent of the Internet of Things (IoT) paradigm to intensive domains, such as industry, is a key enabler for the automation of critical, real-world processes. The strict Quality of Service (QoS) requirements of these domains make low-latency computing paradigms, such as fog computing, very attractive for meeting these requirements. Moreover, th...
Chapter
Internet of Things (IoT) integrates billions of smart devices and keeps growing. IoT technologies play a crucial role in smart applications that improve the quality of life. Likewise, the computational capacity of mobile devices has greatly increased, opening up new possibilities. In many cases, human interaction is necessary for IoT devices to per...
Article
The Internet of Things (IoT) is more present in our daily lives than ever before, turning everyday physical objects into smart devices. However, these devices often need excessive human interaction before reaching their best performance, making them time-consuming and reducing their usability. Nowadays, Artificial Intelligence (AI) techniques are b...
Article
Full-text available
Personal information has become one of the most valuable coins on the Internet. Companies gather a massive amount of data to create rich profiles of their users, trying to understand how they interact with the platform and what are their preferences. However, these profiles do not follow any standard and are usually incomplete in the sense that use...
Article
Today, the benefits of Open Source (OS) Software are clearly established, and many modern software systems build on it. Similarly, the OS movement is also experiencing great advances in areas other than software. This is particularly true in the Consumer Electronics (CE) domain, where an increasingly growing number of systems are based not only on...
Article
The Internet of Things (IoT) paradigm offers applications the potential of automating real-world processes. Applying IoT to intensive domains comes with strict quality of service (QoS) requirements, such as very short response times. To achieve these goals, the first option is to distribute the computational workload throughout the infrastructure (...
Article
Network failures can significantly degrade the network performance in several ways, ranging from experiencing unacceptable delays (e.g., in video conference applications) to leading to significant drops in sales for companies (e.g., airlines tickets purchases). In this paper, we focus on network failures caused by links that are prone to fail due t...
Chapter
Full-text available
Global population is facing a widespread ageing. In next decades, the increasing percentage of people over sixty-five will be significant, which will impact society in several ways. The health system will be one of the sectors specially involved, exploiting the technology as a perfect allied. However, a big percentage of adults live in rural areas...
Preprint
Full-text available
The rise of the Internet of Things (IoT) has opened new research lines that focus on applying IoT applications to domains further beyond basic user-grade applications, such as Industry or Healthcare. These domains demand a very high Quality of Service (QoS), mainly a very short response time. In order to meet these demands, some works are evaluatin...
Article
Although the percentage of people living outside a broadband network has more than halved in recent years, around 10% of the global population does not have access to the Internet. This lack of coverage is particularly concentrated in rural and low-income areas, in which the lack of a cost-effective electricity supply is the main barrier to expandi...
Article
Full-text available
Many rural areas along Spain do not have access to the Internet. Despite the huge spread of technology that has taken place during recent years, some rural districts and isolated villages have a lack of proper communication infrastructures. Moreover, these areas and the connected regions are notably experiencing a technological gap. As a consequenc...
Article
Full-text available
The installation of new equipment (Base Stations, BSs) during the planning phase of a cellular network (including 5G BSs) is governed by exposure limits in terms of allowable ElectroMagnetic Field (EMF) levels. The exposure limits can be either defined by i) international bodies (e.g., ICNIRP) or ii) national regulations imposing limits stricter th...
Article
Service Function Chaining (SFC) is an enabling technology to provide end-to-end service differentiation according to specific user requirements. Although emerging technologies such as Software-Defined Networking (SDN) and Network Function Virtualization (NFV) are perfect enablers for SFC, hardware limitation of Ternary-Content Addressable Memories...
Article
Full-text available
The pervasive presence of smartphones has emerged as one of the key elements for sensing people contextual information. Their sensors and communication capabilities can be used to gather a huge amount of data. Such capabilities have made it possible to compose profiles of people by relating different parameters such as time and location. This paper...
Chapter
Countries are experiencing a global population ageing. It is estimated that the percentage of third age people will notably increase in next decades, implying a difficult challenge to society. Rural areas are the most affected locations by these conditions. Currently, small villages are facing an increasing ageing of population where almost 40% of...
Article
Full-text available
We focus on the problem of managing the energy consumption of a cellular network tailored to cover rural and low-income areas. The considered architecture exploits Unmanned Aerial Vehicles (UAVs) to ensure wireless coverage, as well as Solar Panels (SPs) and batteries installed in a set of ground sites, which provide the energy required to recharge...
Article
Full-text available
The massive amount of traffic required by the emerging Internet of Things (IoT) paradigm can be supported by the imminent arrival of 5G next-generation networks. However, the limited capacity of resources in IoT nodes, e.g., battery lifetime or buffer space, opens a challenge to be taken into account when proposing new routing solutions on IoT scen...
Article
Full-text available
The installation of Base Station (BS) sites is regulated by a variety of laws, at international, national, and local levels. While international regulations are already severe, the national and local laws applied in many countries and regions follow precautionary principles, and enforce ElectroMagnetic Field (EMF) constraints that are even more res...
Article
The emerging software-defined networking (SDN) paradigm introduces new opportunities to improve network performance due to the flexibility and programmability provided by a logically centralized element named controller. However, a rapid adoption of the full SDN architecture is difficult in the short term due to economic and technical reasons. This...
Article
Although most of the efforts to tackle the energy consumption problem have been made on traditional IP networks, energy-aware protocols normally require of several coordination tasks that are not easy to implement on current networking equipment. To this end, flexibility and programmability provided by the emerging Software-Defined Networking (SDN)...
Conference Paper
Full-text available
En los últimos años, la conciencia por la eficiencia energética se ha instalado de lleno en el seno de la sociedad. Aunque la comunidad investigadora ha realizado grandes esfuerzos en proponer soluciones para reducir el consumo de energía de las redes de comunicaciones, la mayoría de estas propuestas están pensadas para redes IP, para las cuales es...
Article
Wireless communications are an essential part of the plethora of mobile and sensor devices that currently operates in many of our households, workplaces and leisure spaces. One of the key requirements for those devices is that the energy consumption has to be reduced to a minimum in order to maximize their battery life. This paper aims to analyze t...
Chapter
This chapter first highlights the significant energy consumption of existing wired communication networks. It considers various means of operating such networks more efficiently. Then, the chapter examines the components that make up a wired communications network and their differing characteristics between the access and core, as well as patterns...
Article
Link high availability and traffic load balancing features are key requirements in today’s data centers networks. Network link aggregation techniques are quite commonly used to provide those features. However, these techniques often come with a cost in terms of energy efficiency, when network links face low traffic situations or even active/passive...
Article
Rapid growth of ICT (Information Communication Technologies) energy consumption involves the need for proposing new mechanisms to enhance their energy efficiency. Focusing on energy consumption of networking equipment, this paper presents a study to achieve a tradeoff between the amount of energy that could be saved in wired networks and the discre...
Conference Paper
Mejorar la eficiencia energética asociada al funcionamiento del equipamiento de red se ha convertido recientemente en un objetivo a lograr por parte de la comunidad investigadora. Uno de los puntos clave es que el equipamiento actual se encuentra restringido por las limitaciones impuestas por la tecnología. Por ello, los fabricantes necesitan de nu...
Conference Paper
Debido al auge de las comunicaciones inalámbricas, reducir su consumo se ha transformado en un punto clave de estudio. Este artículo analiza la influencia de la configuración de un dispositivo inalámbrico en su consumo energético. Para ello se estudian cinco parámetros operacionales en un dispositivo WiFi: dos parámetros de configuración de la cone...
Article
Enhancing energy efficiency associated with the operation of communication network equipments has recently become a research goal. A key issue is that current equipment is constrained by technology limitations. Therefore, vendors need new mechanisms to be researched so that their equipment witness a reduction in energy consumption. This paper propo...
Article
Most of current mobile applications need to have mobility capabilities and are often required to work under different conditions, even in situations with continuous disconnections. Intermittently Connected Mobile Networks (ICMN) encompass environments with intermittent connectivity and long disconnection intervals. In this paper, we focus on defini...
Conference Paper
Nowadays, there is a number of applications that only run on mobile devices. Mobility is a feature required by an increasing number of current applications. Mobile applications are often required to work even in a scenario with frequent disconnections. These environments with intermittent connectivity compose the so-called Intermittently Connected...
Conference Paper
Full-text available
We present a methodology for achieving energy savings in excess of 30% in Wide Area Networks. The approach applies a limited set of pre-calculated network topology configurations derived via a Genetic Algorithm across the day. The GA determines the minimum set of resources required in order to support a given traffic demand. Information gleaned fro...
Conference Paper
Recently, the number of patients with diagnosis of chronic diseases has significantly increased in western societies. This growth implies an increase in both costs and resources for the health system as well as in the number of trips to health centers by this class of patients. Mobile communication technologies can be exploited to get reduced costs...
Article
Full-text available
Nowadays, a very useful platform is becoming widely used to deploy new services and applications in theInternet: the overlay networks. These networks create a virtual topology on top of existing ones with thepurpose of providing several different services such as file sharing or content delivery. This surveyfocuses on diverse research issues concer...
Article
Full-text available
In recent years, overlay networks have rapidly evolved and emerged as a promising platform to deploy new applications and services in the Internet, becoming widely used for content delivery and file sharing services. This is because they provide effective and reliable services by creating a virtual topology on top of existing networks. However, new...
Conference Paper
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...
Conference Paper
During recent years the number of patients who suffer from chronic diseases has noticeably increased in developed countries. This implies an increase both in costs and resource allocation of the health system and in the commuting frequency to health centers by patients as well. These costs can be reduced by using mobile communication technologies....
Chapter
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...
Chapter
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...
Conference Paper
Full-text available
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...

Network

Cited By

Projects

Projects (5)
Project
The main goal of IPSN Workshop is to present state-of-the-art research results and experience reports in the area of AI/ML for network management on softwarized networks, addressing topics such as artificial intelligence techniques and models for network and service management in softwarized networks; smart service orchestration, training process at the constrained edge, dynamic Service Function Chaining, Intent and policy based management, centralized vs distributed control of SDN/NFV based networks, analytics and big data approaches, knowledge creation and decision making. This workshop offers a timely venue for researchers and industry partners to present and discuss their latest results in the application of network intelligence to the management of softwarized networks. For more information, please check https://ipsn2022.spilab.es/
Project
Works whose aim is to predict the remaining life time of a network element based on its activity and network parameters.
Project
Works on efficient network management during the transition from IP to fully-deployed SDN networks. Topics such as traffic matrix estimation and SFC deployment are also covered in current hybrid IP/SDN networks.