Celeste Campo Vazquez

@conference{javierblanco002,

title = {Integrating Post-Quantum Cryptography into CoAP and MQTT-SN Protocols},

author = {Javier Blanco-Romero and Vicente Lorenzo and Florina Almenares and Daniel Díaz-Sánchez and and Celeste Campo and Carlos García-Rubio},

url = {https://ieeexplore.ieee.org/abstract/document/10733716/figures#figures},

doi = {https://doi.org/10.1109/ISCC61673.2024.10733716},

isbn = {979-8-3503-5424-9},

year  = {2024},

date = {2024-10-31},

urldate = {2024-10-31},

booktitle = {2024 IEEE Symposium on Computers and Communications (ISCC)},

publisher = {IEEE},

abstract = {Post-Quantum Cryptography (PQC) is a practical and cost-effective solution to defend against emerging quantum computing threats. So, leading worldwide security agencies and standardization bodies strongly advocate for the proactive integration of PQ cryptography into underlying frameworks to support applications, protocols, and services. The current research predominantly addresses the incorporation of PQC in Internet communication protocols such as HTTP and DNS; nevertheless, the focus on embedded devices has been limited to evaluating PQC’s integration within TLS/DTLS in isolation. Hence, there is a notable gap in understanding how PQC impacts IoT-specific communication protocols. This paper presents the integration of PQC into two communication protocols specifically tailored for IoT devices, the Constrained Application Protocol (CoAP) and MQTT for Sensor Networks (MQTT-SN), via the wolfSSL library. These two integrations contribute to the understanding of PQC’s implications for IoT communication protocols.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{nokey,

title = {Comparing Pseudo, Classical True and Quantum Random Number Generators Using Standard Quality Assessments},

author = {Vicente Lorenzo and Javier Blanco-Romero and Florina Almenares and Daniel Díaz-Sánchez and Carlos García-Rubio and Celeste Campo and Andrés Marín},

year  = {2024},

date = {2024-10-25},

urldate = {2024-10-25},

booktitle = {XVIII Reunión Española sobre Criptología y Seguridad de la Información (RECSI 2024), León, 23 al 25 de Octubre, 2024.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{marta003,

title = {Real-Time Analysis of Encrypted DNS Traffic for Threat Detection},

author = {Marta Moure-Garrido and Sajal Das and Celeste Campo and Carlos García-Rubio},

url = {https://ieeexplore.ieee.org/document/10622347},

doi = {https://doi.org/10.1109/ICC51166.2024.10622347},

issn = {1550-3607},

year  = {2024},

date = {2024-08-20},

booktitle = {ICC 2024 - IEEE International Conference on Communications},

pages = {3292-3297},

publisher = {IEEE},

abstract = {Domain Name System (DNS) tunneling is a well-known cyber-attack that allows data exfiltration - the attackers exploit this tunnel to extract sensitive information from the system. Advanced Persistent Threat (APT) attackers encapsulate malicious traffic in a DNS connection to elude security mechanisms such as Intrusion Detection System (IDS). Although different techniques have been implemented to detect these targeted attacks, their rise induces a threat to Cyber-Physical Systems (CPS). The DNS over HTTPS (DoH) tunnel detection is a challenge because the encrypted data prevents an analysis of DNS traffic content. In this paper, we present a novel detection system that identifies malicious DoH tunnels in real time. We study the normal traffic pattern and based on that, we define a profile. The objective of this system is to detect malicious activity on the system as early as possible through a lightweight packet by packet analysis based on a real-time IDS classifier. This system is evaluated on three available data sets and the results obtained are compared with a machine learning technique. We demonstrate that the identification of anomalous activity, in particular DoH tunnels, is possible by analyzing different traffic features.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{marta003b,

title = {Real-Time Analysis of Encrypted DNS Traffic for Threat Detection},

author = {Marta Moure-Garrido and Sajal Das and Celeste Campo and Carlos García-Rubio},

url = {https://ieeexplore.ieee.org/document/10622347},

doi = {https://doi.org/10.1109/ICC51166.2024.10622347},

issn = {1550-3607},

year  = {2024},

date = {2024-08-20},

booktitle = {ICC 2024 - IEEE International Conference on Communications},

pages = {3292-3297},

publisher = {IEEE},

abstract = {Domain Name System (DNS) tunneling is a well-known cyber-attack that allows data exfiltration - the attackers exploit this tunnel to extract sensitive information from the system. Advanced Persistent Threat (APT) attackers encapsulate malicious traffic in a DNS connection to elude security mechanisms such as Intrusion Detection System (IDS). Although different techniques have been implemented to detect these targeted attacks, their rise induces a threat to Cyber-Physical Systems (CPS). The DNS over HTTPS (DoH) tunnel detection is a challenge because the encrypted data prevents an analysis of DNS traffic content. In this paper, we present a novel detection system that identifies malicious DoH tunnels in real time. We study the normal traffic pattern and based on that, we define a profile. The objective of this system is to detect malicious activity on the system as early as possible through a lightweight packet by packet analysis based on a real-time IDS classifier. This system is evaluated on three available data sets and the results obtained are compared with a machine learning technique. We demonstrate that the identification of anomalous activity, in particular DoH tunnels, is possible by analyzing different traffic features.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{marta002,

title = {Análisis estadístico del tráfico DoH para la detección del uso malicioso de túneles},

author = {Marta Moure-Garrido and Celeste Campo and Carlos García-Rubio},

url = {https://dialnet.unirioja.es/servlet/articulo?codigo=9206590},

isbn = {978-84-88734-13-6},

year  = {2024},

date = {2024-07-10},

urldate = {2024-07-10},

booktitle = {Investigación en Ciberseguridad Actas de las VII Jornadas Nacionales (7º.2022.Bilbao) },

pages = {38-41},

abstract = {Las primeras versiones de DNS presentaban ciertos problemas de seguridad: integridad, autenticidad y privacidad. Para solventarlos se definió DNSSEC, pero esta versión

seguía sin garantizar privacidad. Por ello, se definieron DNS sobre TLS (DoT) en 2016 y DNS sobre HTTPS (DoH) en 2018. En los ultimos años se ha empleado la tunelización DNS para encapsular trafico maligno. Las versiones DoT y DoH han complicado la detección de estos túneles dado que los datos van encriptados. En trabajos anteriores se emplean técnicas de aprendizaje automático para identificar túneles DoH, pero tienen limitaciones. En este trabajo realizamos un análisis estadístico para aprender el patrón del tráfico DoH y estudiar las diferencias entre el tráfico benigno y el tráfico creado con herramientas de tunelización. El análisis revela que ciertos parámetros estadísticos permiten diferenciar el trafico. El siguiente paso de la investigación es aplicar técnicas más elaboradas basándonos en el análisis realizado.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo013,

title = {Characterizing Mobile Applications Through Analysis of DNS Traffic},

author = {Andrea Jimenez-Berenguel and Marta Moure-Garrido and Carlos García-Rubio Celeste Campo-Vázquez},

doi = {https://doi.org/10.1145/3616394.3618268},

isbn = {N 979-8-4007-0370-6},

year  = {2023},

date = {2023-10-30},

urldate = {2023-10-30},

booktitle = {PE-WASUN '23: Proceedings of the Int'l ACM Symposium on Performance Evaluation of Wireless Ad Hoc, Sensor & Ubiquitous Networks.},

pages = {69-76},

publisher = {ACM},

abstract = {User privacy may remain vulnerable when using encrypted communication protocols, such as HTTPS, if DNS queries are sent in cleartext over UDP port 53 (Do53). In this study, we demonstrate the possibility of characterizing the mobile application a user is using based on its Do53 traffic. By analyzing a dataset of traffic captured from 80 Android mobile apps, we can identify the app being used based on its DNS queries with an accuracy of 88.75%. While modern operating systems, including Android since version 9.0, support encrypted DNS traffic, this feature is not enabled by default and relies on the DNS provider's support. Moreover, even when DNS traffic is encrypted, the DNS service provider still has access to our queries and could potentially extract information from them.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{garciarubio008,

title = {Synthetic Generation of Electrical Consumption Traces in Smart Homes},

author = {Carlos García-Rubio and Celeste Campo and Marta Moure-Garrido },

url = {https://link.springer.com/chapter/10.1007/978-3-031-21333-5_68},

doi = {https://doi.org/10.1007/978-3-031-21333-5_68},

isbn = {978-3-031-21332-8},

year  = {2022},

date = {2022-11-21},

urldate = {2022-11-21},

booktitle = { Lecture Notes in Networks and Systems},

volume = {594},

pages = {681-692},

publisher = {Springer International Publishing},

abstract = {With the introduction of the smart grid, smart meters and smart plugs, it is possible to know the energy consumption of a smart home, either per appliance or aggregate. Some recent works have used energy consumption traces to detect anomalies, either in the behavior of the inhabitants or in the operation of some device in the smart home. To train and test the algorithms that detect these anomalies, it is necessary to have extensive and well-annotated consumption traces. However, this type of traces is difficult to obtain. In this paper we describe a highly configurable synthetic electrical trace generator, with characteristics similar to real traces, that can be used in this type of study. In order to have a more realistic behavior, the traces are generated by adding the consumption of several simulated appliances, which precisely represent the consumption of different typical electrical devices. Following the behavior of the real traces, variations at different scales of time and anomalies are introduced to the aggregated smart home energy consumption.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo015,

title = {Detecting Malicious Use of DoH Tunnels Using Statistical Traffic Analysis},

author = {Marta Moure-Garrido and Celeste Campo-Vázquez and Carlos García-Rubio},

url = {https://dl.acm.org/doi/10.1145/3551663.3558605},

doi = {https://doi.org/10.1145/3551663.3558605},

isbn = {978-1-4503-9483-3},

year  = {2022},

date = {2022-10-24},

urldate = {2022-10-24},

booktitle = {PE-WASUN '22: Proceedings of the 19th ACM International Symposium on Performance Evaluation of Wireless Ad Hoc, Sensor, & Ubiquitous Networks},

publisher = {ACM},

abstract = {DNS plays a fundamental role in the operation of ubiquitous networks. All devices connected to these networks need DNS to work, both for traditional domain name to IP address translation, and for more advanced services such as resource discovery. At first, the DNS communication protocol presented certain security problems: integrity, authenticity and confidentiality. DNSSEC provides security but still does not guarantee confidentiality. To solve this problem, DNS over TLS (DoT) and DNS over HTTPS (DoH) were defined. In recent years, DNS tunneling, a covert form of encapsulating data transmission, has been used to encapsulate malicious traffic in a DNS connection. DoT and DoH versions complicate the detection of these tunnels because the encrypted data prevents performing an analysis of the content of the DNS traffic. Previous work has used machine learning techniques to identify DoH tunnels, but these have limitations. In this study, we identify the most significant features that singularize malicious traffic from benign traffic by statistical analysis. Based on the selected features, we obtain satisfactory results in the classification between benign and malicious DoH traffic. The study reveals that it is possible to differentiate traffic based on certain statistical parameters.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo016b,

title = {Performance Evaluation of the CoAP Protocol with Security Support for IoT Environments},

author = {Victor Seoane-Merida and Florina Almenares-Mendoza and Celeste Campo-Vázquez and Carlos García-Rubio},

doi = {https://doi.org/10.1145/3416011.3424754},

isbn = {978-1-4503-8118-5},

year  = {2020},

date = {2020-11-09},

urldate = {2020-11-09},

booktitle = {PE-WASUN '20: Proceedings of the 17th ACM Symposium on Performance Evaluation of Wireless Ad Hoc, Sensor, & Ubiquitous Networks},

pages = {41-48},

publisher = {ASSOCIATION FOR COMPUTING MACHINERY, INC },

abstract = {Internet of Things (IoT) can be defined as the interconnection through Internet of an unprecedented number of devices with the purpose of exchanging data. It stands as one of the most popular technologies for the following years and it is requiring substantial changes in the Internet protocols to meet its requirements. As the application layer is decisive for the quality of the connection, this paper analyzes the performance offered by one of the most popular protocols for the application layer in IoT: the Constrained Application Protocol (CoAP). This analysis aims to examine the features and capabilities of this protocol and to determine its feasibility to operate under constrained devices using security support. For this, a realistic network scenario is deployed to run the simulations and to measure bandwidth, consumption of resources (i.e., CPU cycles and bandwidth usage) and communication latency. Additionally, the trade-off between security and performance is discussed measuring the bandwidth overhead and the consumption increase associated to secure the communications. Different ciphering and authentication algorithms are tested, following the recommendations made by the Internet Engineering Task Force (IETF).},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo016,

title = {Anomalies detection using entropy in household energy consumption data },

author = {Marta Moure-Garrido and Celeste Campo-Vázquez and Carlos García-Rubio},

url = {https://ebooks.iospress.nl/publication/54775},

doi = {10.3233/AISE200055},

isbn = {978-1-64368-090-3},

year  = {2020},

date = {2020-05-04},

urldate = {2020-05-04},

booktitle = {Intelligent Environments 2020 Workshop Proceedings of the 16th International Conference on Intelligent Environments},

pages = {311-320},

abstract = {The growing boom in smart grids and home automation makes possible

to obtain information of household energy consumption. In this work, we study if

entropy is a good mechanism to detect anomalies in household energy consumption traces. We propose an entropy algorithm based on windowing the temporal

series of energy consumption. We select a trace with a duration of 3 months from

the REFIT project household energy consumption data set, available open access.

Entropy can adapt to changes in consumption in this trace, by learning and forgetting patterns dynamically. Although entropy is a promising technique and it has

many advantages, as the traces in this data set are not sufficiently labeled to check

the correct functioning of the algorithms, we propose to further validate the results

using synthetic traces.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo017,

title = {Performance Evaluation of CoAP and MQTT_SN in an IoT Environment},

author = {Mónica Martí and Carlos García-Rubio and Celeste Campo-Vázquez },

doi = {https://doi.org/10.3390/proceedings2019031049},

year  = {2019},

date = {2019-11-20},

urldate = {2019-11-20},

booktitle = {Proceedings of 13th International Conference on Ubiquitous Computing and Ambient ‪Intelligence UCAmI 2019},

publisher = {MDPI AG },

abstract = {The fast growth of the Internet of Things (IoT) has made this technology one of the most promising paradigms of recent years. Wireless Sensor Networks (WSNs) are one of the most important challenges of the Internet of things. These networks are made up of devices with limited processing power, memory, and energy. The constrained nature of WSNs makes it necessary to have specific restricted protocols to work in these environments. In this paper, we present an energy consumption and network traffic study of the main IoT application layer protocols, the Constrained Application Protocol (CoAP), and the version of Message Queue Telemetry Transport (MQTT) for sensor networks (MQTT_SN). The simulations presented evaluate the performance of these protocols with different network configurations.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo017b,

title = {Analysis of a fast LZ-based entropy estimator for mobility data},

author = { Alicia Rodriguez-Carrion and Carlos García-Rubio and Celeste Campo-Vázquez and Sajal Das },

doi = {https://doi.org/10.1109/percomw.2015.7134080},

isbn = {978-1-4799-8425-1},

year  = {2015},

date = {2015-06-29},

urldate = {2015-06-29},

booktitle = {2015 IEEE International Conference on Pervasive Computing and Communication Workshops (PerCom Workshops)},

pages = {451-456},

publisher = {IEEE Publishing Services },

abstract = {Randomness in people's movements might serve to detect behavior anomalies. The concept of entropy can be used for this purpose, but its estimation is computational intensive, particularly when processing long movement histories. Moreover, disclosing such histories to third parties may violate user privacy. With a goal to keep the mobility data in the mobile device itself yet being able to measure randomness, we propose three fast entropy estimators based on Lempel-Ziv (LZ) prediction algorithms. We evaluated them with 95 movement histories of real users tracked during 9 months using GSM-based mobility data. The results show that the entropy tendencies of the approaches proposed in this work and those in the literature are the same as time evolves. Therefore, our proposed approach could potentially detect variations in the mobility patterns of the user with a lower computational cost. This allows to unveil shifts in the users mobility behavior without disclosing their sensible location data.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo019,

title = {Bandwidth-efficient techniques for information dissemination in urban vehicular networks},

author = {Estrella García-Lozano and Celeste Campo-Vázquez and Carlos García-Rubio and Alberto Cortés},

doi = {https://doi.org/10.1145/2653481.2653483},

isbn = {978-1-4503-3025-1},

year  = {2014},

date = {2014-09-21},

urldate = {2014-09-21},

booktitle = {PE-WASUN '14: Proceedings of the 11th ACM symposium on Performance evaluation of wireless ad hoc, sensor, & ubiquitous networks},

pages = {61-68},

publisher = {ASSOCIATION FOR COMPUTING MACHINERY, INC },

abstract = {Many applications for vehicular networks, such as blocked road warnings or advertising, will require multi-hop dissemination of information to all vehicles in a region of interest. However, this type of communication can cause broadcast storms. Urban scenarios are especially sensitive to broadcast storms because of the high density of vehicles in downtown areas. They also present numerous crossroads and signal blocking due to buildings, that make dissemination more difficult than in open, almost straight interurban roadways. In this article, we study different ways to tackle a multi-hop broadcast of information in an urban area.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{nokey,

title = {Impact of location history collection schemes on observed human mobility features},

author = {Alicia Rodriguez-Carrion and Sajal Das and Celeste Campo-Vázquez and Carlos García-Rubio},

doi = {https://doi.org/10.1109/percomw.2014.6815213},

isbn = {978-1-4799-2736-4},

year  = {2014},

date = {2014-05-15},

urldate = {2014-05-15},

booktitle = {2014 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)},

pages = {254-259},

publisher = {IEEE - THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC },

abstract = {Human mobility knowledge is key for urban planning or mobility models design. Therefore, estimating reliable mobility parameters is crucial to lay an unbiased foundation. However, most works estimating such features rely on datasets made up of the history of mobile network cells where the user is located when she makes active use of the network, known as Call Data Records (CDRs), or every time the her device connects to a new cell, without taking into account cell changes not caused by movement. Could we accurately characterize human mobility with such datasets? In this work we consider three approaches to collect network-based mobility data, propose three filtering techniques to delete cell changes not caused by movement and compare mobility features extracted from the traces collected with each approach. The analysis unveils the need for a filtering step to avoid important biases, and the negative impact that using CDRs may have in estimating mobility parameters.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo018,

title = {A new traffic information service for smart consumer devices},

author = {Estrella García-Lozano and Wolfgang Woerndl and Celeste Campo-Vázquez},

doi = {https://doi.org/10.1109/icce.2014.6775957},

issn = {2158-3994},

year  = {2014},

date = {2014-03-20},

urldate = {2014-03-20},

booktitle = {2014 IEEE International Conference on Consumer Electronics (ICCE). Proceedings},

pages = {169-170},

publisher = {IEEE - THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC },

abstract = {Consumer devices are a key tool for assisting people with their everyday tasks, such as driving. We have developed a traffic information service for consumer devices. It is able to minimize the consumed bandwidth, and works in either sparse or very dense roadways without any infrastructure.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo019b,

title = {A distributed, bandwidth-efficient accident prevention system for interurban VANETs.},

author = {Estrella García-Lozano and Carolina Tripp-Barba and Mónica Aguilar-Igartua and Celeste Campo-Vázquez},

doi = {https://doi.org/10.1109/saconet.2013.6654564},

isbn = {978-1-4799-0694-9},

year  = {2013},

date = {2013-11-07},

urldate = {2013-11-07},

booktitle = {2013 International Conference on Smart Communications in Network Technologies (SaCoNeT)},

pages = {1-5},

publisher = {IEEE - THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC },

abstract = {Road safety has become a main issue for governments and car manufacturers in the last twenty years. The concept of Intelligent Transportation Systems (ITS) is used when talking about communication technologies between vehicles and infrastructure to improve, among others, road safety. In this paper, we propose a warning service to prevent accidents by alerting drivers about accidents and dangerous road conditions. This service includes the definition of a new broadcast dissemination mechanism. A VANET highway scenario is simulated to evaluate how the use of safety schemes decreases the driver's reaction time when an unexpected situation occurs.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo020,

title = {Characterizing Mobile Telephony Signals in Indoor Environments for Their Use in Fingerprinting-Based User Location },

author = {Alicia Rodriguez-Carrion and Celeste Campo-Vázquez and Carlos García-Rubio and Estrella García-Lozano and Alberto Cortés},

doi = {https://doi.org/10.1007/978-3-319-03176-7_29},

issn = {978-3-319-03176-7},

year  = {2013},

date = {2013-05-08},

urldate = {2013-05-08},

booktitle = {Ubiquitous Computing and Ambient Intelligence. Context-Awareness and Context-Driven Interaction},

pages = {223-230},

publisher = {Springer International Publishing},

abstract = {Fingerprinting techniques have been applied to locate users in indoor scenarios using WiFi signals. Although mobile telephony network is used for outdoor location, it is widely deployed and their signal more stable, thus being also a candidate to be used for fingerprinting. This paper describes the characterization of GSM/UMTS signals in indoor scenarios to check if their features allow to use them for constructing the radio maps needed for fingerprinting purposes. We have developed an Android application to collect the received signal information, such that makes the measurement process cheaper and easier. Measurements show that changes in location and device orientation can be identified by observing the received signal strength of the connected and neighboring base stations. Besides, detecting this variability is easier by using the GSM network than with UMTS technology. Therefore mobile telephony network seems suitable to perform fingerprinting-based indoor location.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo022,

title = {Bandwidth Efficient Broadcasting in VANETs },

author = {Estrella García-Lozano and Celeste Campo-Vázquez and Carlos García-Rubio and Alberto Cortés},

url = {https://ieeexplore.ieee.org/abstract/document/6314358#:~:text=10.1109/IWCMC.2012.6314358},

doi = {10.1109/IWCMC.2012.6314358},

issn = {2376-6492},

year  = {2012},

date = {2012-09-27},

urldate = {2012-09-27},

booktitle = {8th International Wireless Communications and Mobile Computing Conference (IWCMC-2012)},

pages = {1091-1096},

publisher = {IEEE},

abstract = {Wireless communications amongst vehicles bring the opportunity for a wide range of applications, from safety aid to passenger entertainment. The necessity to broadcast information to several-hop neighbors is common to most of the potential application protocols. Broadcast protocols for VANETs based on diverse techniques have already been proposed. In this article, we compare basic broadcast schemes that are not dependent on neighbor knowledge using ns-2 - simple flooding, probabilistic, counter-based, distance-based and traffic-based broadcast. The objective is to obtain general directions for the design of a bandwidth efficient broadcast. Based on this comparison, we have selected distance-based flooding and proposed a scheme that is easy to adjust to the application's necessities.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo023,

title = {MOFETA: A Network Architecture Based on MObile FEmtocells to Enhance Cellular Connectivity on TrAins},

author = {Patricia Noriega-Vivas and Celeste Campo-Vázquez and Carlos García-Rubio and Alicia Rodriguez-Carrion },

doi = {https://doi.org/10.1007/978-3-642-29667-3_15},

isbn = {978-3-642-29666-6},

year  = {2012},

date = {2012-05-15},

urldate = {2012-05-15},

booktitle = {Communication Technologies for Vehicles: Proceedings 4th International Workshop, Nets4Cars/Nets4Trains 2012},

pages = {174-185},

publisher = {Springer International Publishing},

abstract = {Nowadays the quality of the indoor coverage on trains is not enough to offer broadband services, mainly due to two factors: the high penetration losses caused by Faraday cage characteristics of the railcars and the high speeds reached. In this paper we aim to enhance the 3G indoor coverage on trains by setting up femtocells inside the railcars and establishing several wireless interfaces along the roof of the train. We design an architecture to connect the train to the fixed network in a transparent manner, so that the end users do not experience service disruptions during the journey. Finally, we deploy a testbed to evaluate the performance of the mobility management system based on test results.



},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo021,

title = {An Efficient, Eco-Friendly Approach for Push-Advertising of Services in VANETs.},

author = {Estrella García-Lozano and Celeste Campo-Vázquez and Carlos García-Rubio and Alberto Cortés and Alicia Rodriguez-Carrion and Patricia Noriega-Vivas},

doi = {https://doi.org/10.1007/978-3-642-35377-2_7},

isbn = {978-3-642-35376-5},

year  = {2012},

date = {2012-05-08},

urldate = {2012-05-08},

booktitle = {VI International Symposium on Ubiquitous Computing and Ambient Intelligence (UCAmI 2012)},

pages = {50-57},

publisher = {Springer Berlin Heidelberg},

abstract = {Thanks to the research on VANETs, we will be able to deploy applications on highways that will contribute to the energy efficiency through a better planning of long trips. With this goal in mind, we have designed a gas/charging station advertising system, that takes advantage of the broadcast nature of the network. We have found that reducing the number of total sent packets is important, as it allows a better use of the available bandwidth. We have optimized a distance-based flooding scheme so that it can support the advertising application with good results in a highway scenario.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo024,

title = {Analysis of Location Prediction Performance of LZ Algorithms using GSM Cell-based Location Data},

author = {Alicia Rodriguez-Carrion and Carlos García-Rubio and Celeste Campo-Vázquez and Alberto Cortés and Estrella García-Lozano and Patricia Noriega-Vivas},

url = {https://hdl.handle.net/10016/13103

https://e-archivo.uc3m.es/bitstreams/66c1a251-8ce0-4a0f-b342-86a8b45e60e8/download},

year  = {2011},

date = {2011-12-20},

urldate = {2011-12-20},

booktitle = {5th International Symposium on Ubiquitous Computing and Ambient Intelligence (UCAMI 2011)},

publisher = {UCAMI},

abstract = {Predictions about users' next locations allow bringing forward their future context, thus having additional time to react. To make such predictions, algorithms capable of learning mobility patterns and estimating the next location are needed. This work is focused on making the predictions on mobile terminals, thus resource consumption being an important constraint. Among the predictors with low resource consumption, the family of LZ algorithms has been chosen to study their performance, analyzing the results drawn from processing location records of 95 users. The main contribution is to divide the algorithms into two phases, thus being possible to use the best combination to obtain better prediction accuracy or lower resource consumption.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo026,

title = {Supporting L3 Femtocell Mobility Using the MOBIKE Protocol },

author = {Patricia Noriega-Vivas and Celeste Campo-Vázquez and Carlos García-Rubio and Estrella García-Lozano},

url = {https://e-archivo.uc3m.es/bitstreams/e15d3ef3-3d4e-4b09-92c0-20319a1bf797/download

https://hdl.handle.net/10016/13811},

isbn = {978-1-61208-142-7},

year  = {2011},

date = {2011-06-24},

urldate = {2011-06-24},

booktitle = {Second International Conference on Access Network (ACCESS 2011)},

pages = {30-35},

publisher = {IARIA XPS},

abstract = {Femtocells can be used to improve the indoor coverage and bandwidth of 3G cellular networks in homes and buildings. They are designed to be placed in a fixed location. However, their use would also be interesting in mobile environments such as public transportation systems. This paper studies the mobility limitations at the layer 3 and suggests an approach to support mobility on femtocell networks. This solution employs the protocols already defined in the femtocell architecture, minimizing thus the impact on it.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo025,

title = {Selection and Publication of Network Interface Cards in Multihomed Pervasive Computing Devices},

author = {Alberto Cortés and Carlos García-Rubio and Celeste Campo-Vázquez and Estrella García-Lozano and Alicia Rodriguez-Carrion },

doi = {https://doi.org/10.1109/PERCOMW.2011.5766876},

isbn = {978-1-61284-938-6},

year  = {2011},

date = {2011-05-12},

urldate = {2011-05-12},

booktitle = {International IEEE Workshop on Middleware and System Support for Pervasive Computing (PERWARE 2011)},

pages = {239-244},

publisher = {IEEE - THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC },

abstract = {Many modern devices come with several, heterogeneous, network interface cards (NICs). However, simple operations like transferring data flows to the cheapest NIC or to one with enough Quality of Service (QoS) are awkward tasks on most Operating Systems. In this paper, we discuss the criteria to select the proper NIC for a given data flow. We also present a new Operating System service, called netqos, to publish data and figures of merit for these criteria. The main objective of netqos is providing relevant information to applications and middleware about NIC selection criteria, isolating them from the idiosyncrasies of the many QoS gathering tools and allowing to choose the proper NIC to fit their needs. We have built this new service as a synthetic file system for the Linux kernel. We describe our experiences in using it in a real-world scenario and the practical and inherent limitations of this approach.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo0028,

title = {Performance Evaluation of J2ME and Symbian Applications in Smart Camera Phones},

author = {Celeste Campo-Vázquez and Carlos García-Rubio and Alberto Cortés },

doi = {https://doi.org/10.1007/978-3-540-85867-6_6},

isbn = {978-3-540-85866-9},

year  = {2009},

date = {2009-03-10},

urldate = {2009-03-10},

booktitle = {Symposium of Ubiquitous Computing and Ambient Intelligence UCAmI 2008},

pages = {48-56},

publisher = {SPRINGER},

abstract = {Nowadays, many smart phones have a built-in camera that is often used as a conventional digital camera. With some image processing in the mobile phone, new applications can be offered to the user, such as augmented reality games or helper applications for visually impaired people. However, image processing applications may require high processor speed and massive dynamic memory, which are scarce resources in smart phones. Image processing algorithms usually consists of long loops iterating some operations. In this paper we evaluate the performance of smart phones executing these operations. We consider both native and J2ME applications. The results we present can help to decide what we can and we cannot do in a mobile phone, and to quantify the performance penalty when using J2ME.},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{campo027,

title = {Descubrimiento de servicios en redes MANET con y sin soporte multicast },

author = {Celeste Campo-Vázquez and Carlos García-Rubio and Alberto Cortés },

year  = {2008},

date = {2008-05-13},

urldate = {2008-05-13},

booktitle = {VII Jornadas de ingeniería telemática (JITEL 2008)},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}