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Dr. Ramón Agüero
Department of Communications Engineering, University of Cantabria, 39005 Santander, Spain

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Research Keywords & Expertise

0 Network Coding
0 Wireless Sensor Networks
0 WLAN and WPAN technologies
0 TCP/IP performance analysis over wireless networks
0 Multi-hop and ad hoc network techniques and protocols

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Network Coding
Wireless Sensor Networks

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Journal article
Published: 26 August 2021 in Sensors
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In this paper we analyze the performance of QUIC as a transport alternative for Internet of Things (IoT) services based on the Message Queuing Telemetry Protocol (MQTT). QUIC is a novel protocol promoted by Google, and was originally conceived to tackle the limitations of the traditional Transmission Control Protocol (TCP), specifically aiming at the reduction of the latency caused by connection establishment. QUIC use in IoT environments is not widespread, and it is therefore interesting to characterize its performance when in over such scenarios. We used an emulation-based platform, where we integrated QUIC and MQTT (using GO-based implementations) and compared their combined performance with the that exhibited by the traditional TCP/TLS approach. We used Linux containers as end devices, and the ns-3 simulator to emulate different network technologies, such as WiFi, cellular, and satellite, and varying conditions. The results evince that QUIC is indeed an appropriate protocol to guarantee robust, secure, and low latency communications over IoT scenarios.

ACS Style

Fátima Fernández; Mihail Zverev; Pablo Garrido; José R. Juárez; Josu Bilbao; Ramón Agüero. Even Lower Latency in IIoT: Evaluation of QUIC in Industrial IoT Scenarios. Sensors 2021, 21, 5737 .

AMA Style

Fátima Fernández, Mihail Zverev, Pablo Garrido, José R. Juárez, Josu Bilbao, Ramón Agüero. Even Lower Latency in IIoT: Evaluation of QUIC in Industrial IoT Scenarios. Sensors. 2021; 21 (17):5737.

Chicago/Turabian Style

Fátima Fernández; Mihail Zverev; Pablo Garrido; José R. Juárez; Josu Bilbao; Ramón Agüero. 2021. "Even Lower Latency in IIoT: Evaluation of QUIC in Industrial IoT Scenarios." Sensors 21, no. 17: 5737.

Journal article
Published: 21 December 2020 in IEEE Transactions on Network and Service Management
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We study Flexible Functional Split functionality of 5G vRAN controllers in 5G networks. We propose an innovative model, based on a Markov Chain, which can be used to characterize their performance. We consider both infinite and finite-buffer controllers. In the former, frames would not be lost (provided the system works in a stable regime), and we thus focus on the time frames stay at the controller. For the finite-buffer controller, there might be losses, and we analyze the trade-off between time at the controller (which might hinder the stringent delay requirements of 5G services), and loss probability. Matrix-geometric techniques are used to resolve the corresponding Quasi-Birth-Death process. The validity of the proposed model is assessed by means of an extensive experiment campaign carried out over an ad-hoc event-driven simulator, which is also used to broaden the analysis, considering different service rate distributions, as well as the variability of the studied performance indicators. The results show that the proposed model can be effectively exploited to tackle the dimensioning of these systems, as it sheds light on how their configuration impacts the expected delay and loss rate.

ACS Style

Luis Diez; Cristina Hervella; Ramon Aguero. Understanding the Performance of Flexible Functional Split in 5G vRAN Controllers: A Markov Chain-Based Model. IEEE Transactions on Network and Service Management 2020, 18, 456 -468.

AMA Style

Luis Diez, Cristina Hervella, Ramon Aguero. Understanding the Performance of Flexible Functional Split in 5G vRAN Controllers: A Markov Chain-Based Model. IEEE Transactions on Network and Service Management. 2020; 18 (1):456-468.

Chicago/Turabian Style

Luis Diez; Cristina Hervella; Ramon Aguero. 2020. "Understanding the Performance of Flexible Functional Split in 5G vRAN Controllers: A Markov Chain-Based Model." IEEE Transactions on Network and Service Management 18, no. 1: 456-468.

Journal article
Published: 04 September 2020 in Applied Sciences
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It is well known that transport protocol performance is severely hindered by wireless channel impairments. We study the applicability of Machine Learning (ML) techniques to predict congestion status of 5G access networks, in particular mmWave links. We use realistic traces, using the 3GPP channel models, without being affected using legacy congestion-control solutions. We start by identifying the metrics that might be exploited from the transport layer to learn the congestion state: delay and inter-arrival time. We formally study their correlation with the perceived congestion, which we ascertain based on buffer length variation. Then, we conduct an extensive analysis of various unsupervised and supervised solutions, which are used as a benchmark. The results yield that unsupervised ML solutions can detect a large percentage of congestion situations and they could thus bring interesting possibilities when designing congestion-control solutions for next-generation transport protocols.

ACS Style

Luis Diez; Alfonso Fernández; Muhammad Khan; Yasir Zaki; Ramón Agüero. Can We Exploit Machine Learning to Predict Congestion over mmWave 5G Channels? Applied Sciences 2020, 10, 6164 .

AMA Style

Luis Diez, Alfonso Fernández, Muhammad Khan, Yasir Zaki, Ramón Agüero. Can We Exploit Machine Learning to Predict Congestion over mmWave 5G Channels? Applied Sciences. 2020; 10 (18):6164.

Chicago/Turabian Style

Luis Diez; Alfonso Fernández; Muhammad Khan; Yasir Zaki; Ramón Agüero. 2020. "Can We Exploit Machine Learning to Predict Congestion over mmWave 5G Channels?" Applied Sciences 10, no. 18: 6164.

Journal article
Published: 30 June 2020 in IEEE Transactions on Network and Service Management
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Network slicing has recently been proposed as one of the main enablers for 5G networks. The slicing concept consists of the partition of a physical network into several self-contained logical networks (slices) that can be tailored to offer different functional or performance requirements. In the context of 5G networks, we argue that existing ubiquitous WiFi technology can be exploited to cope with new requirements. Therefore, in this paper, we propose a novel mechanism to implement network slicing in WiFi Access Points. We formulate the resource allocation problem to the different slices as a stochastic optimization problem, where each slice can have bit rate, delay, and capacity requirements. We devise a solution to the problem above using the Lyapunov drift optimization theory, and we develop a novel queuing and scheduling algorithm. We have used Matlab and Simulink to build a prototype of the proposed solution, whose performance has been evaluated in a typical slicing scenario.

ACS Style

Matias Richart; Javier Baliosian; Joan Serrat; Juan-Luis Gorricho; Ramon Aguero. Slicing With Guaranteed Quality of Service in WiFi Networks. IEEE Transactions on Network and Service Management 2020, 17, 1822 -1837.

AMA Style

Matias Richart, Javier Baliosian, Joan Serrat, Juan-Luis Gorricho, Ramon Aguero. Slicing With Guaranteed Quality of Service in WiFi Networks. IEEE Transactions on Network and Service Management. 2020; 17 (3):1822-1837.

Chicago/Turabian Style

Matias Richart; Javier Baliosian; Joan Serrat; Juan-Luis Gorricho; Ramon Aguero. 2020. "Slicing With Guaranteed Quality of Service in WiFi Networks." IEEE Transactions on Network and Service Management 17, no. 3: 1822-1837.

Journal article
Published: 29 August 2019 in IEEE/ACM Transactions on Networking
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We consider the transmission of packets across a lossy end-to-end network path so as to achieve low in-order delivery delay. This can be formulated as a decision problem, namely deciding whether the next packet to send should be an information packet or a coded packet. Importantly, this decision is made based on delayed feedback from the receiver. While an exact solution to this decision problem is challenging, we exploit ideas from queueing theory to derive scheduling policies based on prediction of a receiver queue length that, while suboptimal, can be efficiently implemented and offer substantially better performance than state of the art approaches. We obtain a number of useful analytic bounds that help characterise design trade-offs and our analysis highlights that the use of prediction plays a key role in achieving good performance in the presence of significant feedback delay. Our approach readily generalises to networks of paths and we illustrate this by application to multipath trans port scheduler design.

ACS Style

Pablo Garrido; Douglas J. Leith; Ramon Aguero. Joint Scheduling and Coding for Low In-Order Delivery Delay Over Lossy Paths With Delayed Feedback. IEEE/ACM Transactions on Networking 2019, 27, 1987 -2000.

AMA Style

Pablo Garrido, Douglas J. Leith, Ramon Aguero. Joint Scheduling and Coding for Low In-Order Delivery Delay Over Lossy Paths With Delayed Feedback. IEEE/ACM Transactions on Networking. 2019; 27 (5):1987-2000.

Chicago/Turabian Style

Pablo Garrido; Douglas J. Leith; Ramon Aguero. 2019. "Joint Scheduling and Coding for Low In-Order Delivery Delay Over Lossy Paths With Delayed Feedback." IEEE/ACM Transactions on Networking 27, no. 5: 1987-2000.

Journal article
Published: 08 April 2019 in Sensors
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The adoption of both Cyber–Physical Systems (CPSs) and the Internet-of-Things (IoT) has enabled the evolution towards the so-called Industry 4.0. These technologies, together with cloud computing and artificial intelligence, foster new business opportunities. Besides, several industrial applications need immediate decision making and fog computing is emerging as a promising solution to address such requirement. In order to achieve a cost-efficient system, we propose taking advantage from spot instances, a new service offered by cloud providers, which provide resources at lower prices. The main downside of these instances is that they do not ensure service continuity and they might suffer from interruptions. An architecture that combines fog and multi-cloud deployments along with Network Coding (NC) techniques, guarantees the needed fault-tolerance for the cloud environment, and also reduces the required amount of redundant data to provide reliable services. In this paper we analyze how NC can actually help to reduce the storage cost and improve the resource efficiency for industrial applications, based on a multi-cloud infrastructure. The cost analysis has been carried out using both real AWS EC2 spot instance prices and, to complement them, prices obtained from a model based on a finite Markov chain, derived from real measurements. We have analyzed the overall system cost, depending on different parameters, showing that configurations that seek to minimize the storage yield a higher cost reduction, due to the strong impact of storage cost.

ACS Style

Goiuri Peralta; Pablo Garrido; Josu Bilbao; Ramón Agüero; Pedro M. Crespo. On the Combination of Multi-Cloud and Network Coding for Cost-Efficient Storage in Industrial Applications. Sensors 2019, 19, 1673 .

AMA Style

Goiuri Peralta, Pablo Garrido, Josu Bilbao, Ramón Agüero, Pedro M. Crespo. On the Combination of Multi-Cloud and Network Coding for Cost-Efficient Storage in Industrial Applications. Sensors. 2019; 19 (7):1673.

Chicago/Turabian Style

Goiuri Peralta; Pablo Garrido; Josu Bilbao; Ramón Agüero; Pedro M. Crespo. 2019. "On the Combination of Multi-Cloud and Network Coding for Cost-Efficient Storage in Industrial Applications." Sensors 19, no. 7: 1673.

Article
Published: 23 November 2018 in Journal of Network and Systems Management
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Network slicing is one of the key enabling technologies for 5G networks. It allows infrastructure owners to assign resources to service providers (tenants), which will afterwards use them to satisfy their end-user demands. This paradigm, which changes the way networks have been traditionally managed, was initially proposed in the wired realm (core networks). More recently, the scientific community has paid attention to the integration of network slicing in wireless cellular technologies (LTE). However, there are not many works addressing the challenges that appear when trying to exploit slicing techniques over WiFi networks, in spite of their growing relevance. In this paper we propose a novel method of proportionally distributing resources in WiFi networks, by means of the airtime. We develop an analytical model, which shed light on how such resources could be split. The validity of the proposed model is assessed by means of simulation-based evaluation over the ns-3 framework

ACS Style

Matías Richart; Javier Baliosian; Joan Serrat; Juan-Luis Gorricho; Ramón Agüero. Slicing in WiFi Networks Through Airtime-Based Resource Allocation. Journal of Network and Systems Management 2018, 27, 784 -814.

AMA Style

Matías Richart, Javier Baliosian, Joan Serrat, Juan-Luis Gorricho, Ramón Agüero. Slicing in WiFi Networks Through Airtime-Based Resource Allocation. Journal of Network and Systems Management. 2018; 27 (3):784-814.

Chicago/Turabian Style

Matías Richart; Javier Baliosian; Joan Serrat; Juan-Luis Gorricho; Ramón Agüero. 2018. "Slicing in WiFi Networks Through Airtime-Based Resource Allocation." Journal of Network and Systems Management 27, no. 3: 784-814.

Journal article
Published: 18 October 2018 in IEEE Transactions on Mobile Computing
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Network densification over space and spectrum is expected to be key to enabling the requirements of next generation mobile systems. The pitfall is that radio resource allocation becomes substantially more complex. In this paper we propose LaSR, a practical multi-connectivity scheduler for OFDMA-based multi-RAT systems. LaSR makes optimal discrete control actions by solving a sequence of simple optimization problems that do not require prior information of traffic patterns. In marked contrast to previous work, the flexibility of our approach allows us to construct scheduling policies that achieve a good balance between system cost and utility satisfaction, while jointly operate across heterogeneous RATs, accommodate real-system requirements, and guarantee system stability. Examples of system requirements considered in this paper include (but are not limited to): constraints on how scheduling data can be encoded onto signaling protocols (e.g. LTE's DCI), delays when turning on/off radio units, or on/off cycles when using unlicensed spectrum.

ACS Style

Luis Diez; Andres Garcia-Saavedra; Victor Valls; Xi Li; Xavier Costa-Perez; Ramon Aguero. LaSR: A Supple Multi-Connectivity Scheduler for Multi-RAT OFDMA Systems. IEEE Transactions on Mobile Computing 2018, 19, 624 -639.

AMA Style

Luis Diez, Andres Garcia-Saavedra, Victor Valls, Xi Li, Xavier Costa-Perez, Ramon Aguero. LaSR: A Supple Multi-Connectivity Scheduler for Multi-RAT OFDMA Systems. IEEE Transactions on Mobile Computing. 2018; 19 (3):624-639.

Chicago/Turabian Style

Luis Diez; Andres Garcia-Saavedra; Victor Valls; Xi Li; Xavier Costa-Perez; Ramon Aguero. 2018. "LaSR: A Supple Multi-Connectivity Scheduler for Multi-RAT OFDMA Systems." IEEE Transactions on Mobile Computing 19, no. 3: 624-639.

Preprint
Published: 13 April 2018
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We consider the transmission of packets across a lossy end-to-end network path so as to achieve low in-order delivery delay. This can be formulated as a decision problem, namely deciding whether the next packet to send should be an information packet or a coded packet. Importantly, this decision is made based on delayed feedback from the receiver. While an exact solution to this decision problem is combinatorial in the feedback delay, we exploit ideas from queueing theory to derive scheduling policies that, while suboptimal, can be efficiently implemented and offer substantially better performance than state of the art approaches to making use of delayed feedback. We obtain a number of useful analytic bounds that help characterise design trade-offs and our analysis highlights that the use of prediction plays a key role in achieving good performance in the presence of significant feedback delay. Our approach readily generalises to networks of paths and we illustrate this by application to multipath transport scheduler design.

ACS Style

Pablo Garrido; Douglas Leith; Ramón Aguero. Joint Scheduling and Coding Over Lossy Paths With Delayed Feedback. 2018, 1 .

AMA Style

Pablo Garrido, Douglas Leith, Ramón Aguero. Joint Scheduling and Coding Over Lossy Paths With Delayed Feedback. . 2018; ():1.

Chicago/Turabian Style

Pablo Garrido; Douglas Leith; Ramón Aguero. 2018. "Joint Scheduling and Coding Over Lossy Paths With Delayed Feedback." , no. : 1.

Conference paper
Published: 01 April 2018 in 2018 IEEE Wireless Communications and Networking Conference (WCNC)
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Multicast services are believed to play a relevant role in next wireless networking scenarios. In this paper we exploit Tunable Sparse Network Coding techniques to increase reliability of multicast communications. We show that the proposed network coding scheme yields a better performance than state-of-the-art solutions, which are traditionally based on retransmissions. We first use a model to analytically compare the two approaches. Then, we validate and broaden this analysis by means of an experimental campaign over a testbed deployed with Commercial Of-The-Shelf devices. This platform, comprising low cost devices (Raspberry-PI), allows us to assess the feasibility of the proposed solution, which offers a relevant gain in terms of performance.

ACS Style

Pablo Garrido; Ramón Aguero. Improving wireless multicast communications with NC: Performance assessment over a COTS platform. 2018 IEEE Wireless Communications and Networking Conference (WCNC) 2018, 1 -6.

AMA Style

Pablo Garrido, Ramón Aguero. Improving wireless multicast communications with NC: Performance assessment over a COTS platform. 2018 IEEE Wireless Communications and Networking Conference (WCNC). 2018; ():1-6.

Chicago/Turabian Style

Pablo Garrido; Ramón Aguero. 2018. "Improving wireless multicast communications with NC: Performance assessment over a COTS platform." 2018 IEEE Wireless Communications and Networking Conference (WCNC) , no. : 1-6.

Conference paper
Published: 01 November 2017 in 2017 13th International Conference on Network and Service Management (CNSM)
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ACS Style

Matias Richart; Javier Baliosian; Joan Serrati; Juan-Luis Gorricho; Ramon Aguero; Nazim Agoulmine. Resource allocation for network slicing in WiFi access points. 2017 13th International Conference on Network and Service Management (CNSM) 2017, 1 .

AMA Style

Matias Richart, Javier Baliosian, Joan Serrati, Juan-Luis Gorricho, Ramon Aguero, Nazim Agoulmine. Resource allocation for network slicing in WiFi access points. 2017 13th International Conference on Network and Service Management (CNSM). 2017; ():1.

Chicago/Turabian Style

Matias Richart; Javier Baliosian; Joan Serrati; Juan-Luis Gorricho; Ramon Aguero; Nazim Agoulmine. 2017. "Resource allocation for network slicing in WiFi access points." 2017 13th International Conference on Network and Service Management (CNSM) , no. : 1.

Conference paper
Published: 27 September 2017 in Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017
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A pesar del notable esfuerzo llevado a cabo porla comunidad científica en el ámbito de la tecnología LTE,aún no existe una metodología globalmente aceptada paraanalizar este tipo de redes. Igualmente, no se conoce unaúnica solución que responda a todos los requisitos que sepueden plantear a la hora de acometer su análisis, de modoque se emplean diferentes herramientas y soluciones, cadauna con sus ventajas e inconvenientes. Una de las limitacionesmás importantes es la dificultad para evaluar escenarios conun número elevado de elementos de red, lo que podría reflejarla situación de redes heterogéneas (HetNets). En otros casos,no se presta mucha atención a las características del nivelde servicio, suponiendo habitualmente que el sistema estásaturado (full-buffer). Este trabajo presenta un entorno desimulación flexible y genérico (GWNSyM - Generic WirelessNetwork System Modeler), que permite el despliegue deescenarios complejos, y el análisis de diferentes técnicasy soluciones de gestión, así como nuevas arquitecturas dered. La herramienta se valida analizando una red muyheterogénea, con un elevado número de usuarios. Sobre esteescenario se han analizado diferentes técnicas de acceso, incluyendoDUDe (Downlink-Uplink Decoupling), que planteaun cambio sustancial frente a las soluciones tradicionales deselección de acceso.

ACS Style

Luis Diez; Paula Rodríguez; Paula Sarasúa; Ramón Agüero. Simulación genérica a nivel de sistema para soluciones avanzadas de gestión de recursos. Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017 2017, 1 .

AMA Style

Luis Diez, Paula Rodríguez, Paula Sarasúa, Ramón Agüero. Simulación genérica a nivel de sistema para soluciones avanzadas de gestión de recursos. Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017. 2017; ():1.

Chicago/Turabian Style

Luis Diez; Paula Rodríguez; Paula Sarasúa; Ramón Agüero. 2017. "Simulación genérica a nivel de sistema para soluciones avanzadas de gestión de recursos." Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017 , no. : 1.

Conference paper
Published: 27 September 2017 in Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017
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Las comunicaciones multicast, caracaterizadas por la existencia de una única fuente, que transmite la misma información a múltiples destinos, están llamadas a ser un ingrediente relevante en las redes de siguiente generación. Este trabajo se centra en el uso del esquema de codificación de red Random Linear Network Coding (RLNC) para ofrecer una mayor escalabilidad en ese tipo de comunicaciones, frente a otros esquemas más tradicionales, incrementando la fiabilidad extremo a extremo. Los resultados teóricos ponen de manifiesto la gran ventaja que supone el utilizar técnicas de codificación, frente al uso de retransmisiones selectivas para recuperar la información perdida. Además, se muestra la viabilidad de la solución propuesta, desplegándola sobre una plataforma experimental compuesta por múltiples dispositivos de bajo coste, Raspberry-Pi's.

ACS Style

Pablo Garrido; Ramon Agüero. Caracterización experimental del comportamiento de Network Coding para comunicaciones multicast. Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017 2017, 1 .

AMA Style

Pablo Garrido, Ramon Agüero. Caracterización experimental del comportamiento de Network Coding para comunicaciones multicast. Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017. 2017; ():1.

Chicago/Turabian Style

Pablo Garrido; Ramon Agüero. 2017. "Caracterización experimental del comportamiento de Network Coding para comunicaciones multicast." Proceedings XIII Jornadas de Ingenieria Telematica - JITEL2017 , no. : 1.

Article
Published: 23 September 2017 in Mobile Networks and Applications
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ACS Style

Ramón Agüero; Bernd-Ludwig Wenning; Yasir Zaki; Andreas Timm-Giel. Architectures, Protocols and Algorithms for 5G Wireless Networks. Mobile Networks and Applications 2017, 23, 518 -520.

AMA Style

Ramón Agüero, Bernd-Ludwig Wenning, Yasir Zaki, Andreas Timm-Giel. Architectures, Protocols and Algorithms for 5G Wireless Networks. Mobile Networks and Applications. 2017; 23 (3):518-520.

Chicago/Turabian Style

Ramón Agüero; Bernd-Ludwig Wenning; Yasir Zaki; Andreas Timm-Giel. 2017. "Architectures, Protocols and Algorithms for 5G Wireless Networks." Mobile Networks and Applications 23, no. 3: 518-520.

Journal article
Published: 31 May 2017 in Sensors
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Despite the increasing presence of wireless communications in everyday life, there exist some voices raising concerns about their adverse effects. One particularly relevant example is the potential impact of the electromagnetic field they induce on the population’s health. Traditionally, very specialized methods and devices (dosimetry) have been used to assess the strength of the E-field, with the main objective of checking whether it respects the corresponding regulations. In this paper, we propose a complete novel approach, which exploits the functionality leveraged by a smart city platform. We deploy a number of measuring probes, integrated as sensing devices, to carry out a characterization embracing large areas, as well as long periods of time. This unique platform has been active for more than one year, generating a vast amount of information. We process such information, and the obtained results validate the whole methodology. In addition, we discuss the variation of the E-field caused by cellular networks, considering additional information, such as usage statistics. Finally, we establish the exposure that can be attributed to the base stations within the scenario under analysis.

ACS Style

Luis Diez; Ramón Agüero; Luis Muñoz. Electromagnetic Field Assessment as a Smart City Service: The SmartSantander Use-Case. Sensors 2017, 17, 1250 .

AMA Style

Luis Diez, Ramón Agüero, Luis Muñoz. Electromagnetic Field Assessment as a Smart City Service: The SmartSantander Use-Case. Sensors. 2017; 17 (6):1250.

Chicago/Turabian Style

Luis Diez; Ramón Agüero; Luis Muñoz. 2017. "Electromagnetic Field Assessment as a Smart City Service: The SmartSantander Use-Case." Sensors 17, no. 6: 1250.

Article
Published: 02 March 2017 in Mobile Networks and Applications
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ACS Style

Ramón Agüero; Maria Magdalena Payeras Capellà; Jaime Lloret; Guillem Femenias. Recent Advances on Telematics Engineering. Mobile Networks and Applications 2017, 22, 1065 -1067.

AMA Style

Ramón Agüero, Maria Magdalena Payeras Capellà, Jaime Lloret, Guillem Femenias. Recent Advances on Telematics Engineering. Mobile Networks and Applications. 2017; 22 (6):1065-1067.

Chicago/Turabian Style

Ramón Agüero; Maria Magdalena Payeras Capellà; Jaime Lloret; Guillem Femenias. 2017. "Recent Advances on Telematics Engineering." Mobile Networks and Applications 22, no. 6: 1065-1067.

Conference paper
Published: 01 March 2017 in 2017 IEEE Wireless Communications and Networking Conference (WCNC)
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Despite their high computational complexity, Random Linear Network Coding (RLNC) techniques have been shown to offer a good robustness against packet erasure wireless channels. Some approaches have been recently proposed to reduce such computational burden, for both encoder and decoder elements. One of those approaches are the so- called Tunable Sparse Network Coding (TSNC) techniques, which advocate limiting the number of packets that are combined to build a coded packet. They also propose dynamically adapting the corresponding sparsity level, as the transmission evolves, although an optimum tuning policy has not been yet found. In this paper we present a TSNC implementation that exploits a novel analytical model to estimate the probability of generating an innovative packet (linearly independent combination), given the current status at the decoder. Taking advantage of the model's accuracy, the proposed scheme offers a better trade-off between computational complexity and network performance. Furthermore, we broaden the analysis of TSNC techniques by thoroughly assessing their behavior over wireless networks using the ns-3 platform. The results yield a remarkable complexity reduction (approx. 3.33x less complexity), without jeopardizing network performance.

ACS Style

Pablo Garrido; Daniel E. Lucani; Ramon Aguero. How to Tune Sparse Network Coding over Wireless Links. 2017 IEEE Wireless Communications and Networking Conference (WCNC) 2017, 1 -6.

AMA Style

Pablo Garrido, Daniel E. Lucani, Ramon Aguero. How to Tune Sparse Network Coding over Wireless Links. 2017 IEEE Wireless Communications and Networking Conference (WCNC). 2017; ():1-6.

Chicago/Turabian Style

Pablo Garrido; Daniel E. Lucani; Ramon Aguero. 2017. "How to Tune Sparse Network Coding over Wireless Links." 2017 IEEE Wireless Communications and Networking Conference (WCNC) , no. : 1-6.

Journal article
Published: 24 January 2017 in IEEE Transactions on Communications
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Random linear network coding has been shown to offer an efficient communication scheme, leveraging a remarkable robustness against packet losses. However, it suffers from a high-computational complexity, and some novel approaches, which follow the same idea, have been recently proposed. One of such solutions is sparse network coding (SNC), where only few packets are combined with each transmission. The amount of data packets to be combined can be set from a density parameter/distribution, which could be eventually adapted. In this paper, we present a semi-analytical model that captures the performance of SNC on an accurate way. We exploit an absorbing Markov process, where the states are defined by the number of useful packets received by the decoder, i.e., the decoding matrix rank, and the number of non-zero columns at such matrix. The model is validated by the means of a thorough simulation campaign, and the difference between model and simulation is negligible. We also include in the comparison of some more general bounds that have been recently used, showing that their accuracy is rather poor. The proposed model would enable a more precise assessment of the behavior of SNC techniques.

ACS Style

Pablo Garrido; Daniel E. Lucani; Ramon Aguero. Markov Chain Model for the Decoding Probability of Sparse Network Coding. IEEE Transactions on Communications 2017, 65, 1675 -1685.

AMA Style

Pablo Garrido, Daniel E. Lucani, Ramon Aguero. Markov Chain Model for the Decoding Probability of Sparse Network Coding. IEEE Transactions on Communications. 2017; 65 (4):1675-1685.

Chicago/Turabian Style

Pablo Garrido; Daniel E. Lucani; Ramon Aguero. 2017. "Markov Chain Model for the Decoding Probability of Sparse Network Coding." IEEE Transactions on Communications 65, no. 4: 1675-1685.

Conference paper
Published: 19 January 2017 in Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Despite the huge research effort in the field of LTE networks, there is not a widely accepted methodology to conduct the corresponding analysis. Various approaches and tools are used, each of them having several advantages, but showing some drawbacks as well. One of the most limiting aspects is that they are not usually able to cope with network deployments having a large number of elements, as it would be in dense Heterogeneous Networks (HetNets). In other cases, they do not usually pay too much attention to the requirements that different types of services might have, overusing the so-called full-buffer approach. In this paper we introduce the Generic Wireless Network System Modeler (GWNSyM), a flexible framework that allows the deployment of rather complex networks, which can be exploited to analyze a wide range of resource management techniques, solutions and, even, novel architectural approaches. The tool is validated over a high-dense network deployment, embracing different types of cells, users and services. Over such scenario, we assess the performance of CoMP techniques and we leverage the Network Virtualization Function paradigm.

ACS Style

Luis Diez; Sergio Izuel; Ramón Agüero. Generic Wireless Network System Modeler:. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2017, 131 -145.

AMA Style

Luis Diez, Sergio Izuel, Ramón Agüero. Generic Wireless Network System Modeler:. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. 2017; ():131-145.

Chicago/Turabian Style

Luis Diez; Sergio Izuel; Ramón Agüero. 2017. "Generic Wireless Network System Modeler:." Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering , no. : 131-145.

Conference paper
Published: 19 January 2017 in Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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In parallel to the explosion of the use of wireless technologies to connect devices, the scientific community is continually aiming to take advantage of such technologies to provide new services. In this sense, there have been many attempts to exploit the information provided by IEEE802.11 and Bluetooth interfaces, commonly found in most of the smartphones that are being used at the time of writing. In this paper we describe a novel deployment that fosters such approach. Furthermore, the measurements that are gathered are made available, thanks to its integration within the SmartSantander testbed, and to the federation with complementary testbeds. The federation platform and the described deployment are outcomes of the FESTIVAL collaborative project (Europe-Japan). Besides depicting the corresponding software architecture, the paper also discusses some preliminary results that are used to assess the feasibility of the proposed scheme.

ACS Style

Juan R. Santana; Juan Carrasco; Jose A. Galache; Luis Sanchez; Ramón Agüero. A Solution for Tracking Visitors in Smart Shopping Environments: A Real Platform Implementation Based on Raspberry Pi. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2017, 72 -87.

AMA Style

Juan R. Santana, Juan Carrasco, Jose A. Galache, Luis Sanchez, Ramón Agüero. A Solution for Tracking Visitors in Smart Shopping Environments: A Real Platform Implementation Based on Raspberry Pi. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. 2017; ():72-87.

Chicago/Turabian Style

Juan R. Santana; Juan Carrasco; Jose A. Galache; Luis Sanchez; Ramón Agüero. 2017. "A Solution for Tracking Visitors in Smart Shopping Environments: A Real Platform Implementation Based on Raspberry Pi." Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering , no. : 72-87.