Johann's Virtual Home

Written by Johann | 04 May 2009
Posted in On going projects

SEISCIENTOS is a coordinated project between the Networking Group of the Polytechnic University of Valencia, and the Dept. of Information and Communications Engineering (DIIC) of the University of Murcia. It is funded by the spanish "Ministry of Science and Innovation (MICINN) ".

The work proposed in this project is aimed at creating a framework that meets the needs for communication and for the infrastructure to provide dedicated services to end-user in ubiquitous vehicular environments.

The vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communications will have a special relevance in this project. Various communication technologies will be exploited, mainly vehicular ad-hoc networks (VANET) and networks with infrastructure, whose main representative are 3G cellular networks. We will study the feasibility of such technologies in the area of vehicles; explore new strategies for modeling networks in VANETs, and directing all development towards an integrated environment for a communicating vehicle. In this regard, special attention will be given to provide a common communication interface, isolating the user from handoffs or changes that may occur between different network technologies.

See more info at http://www.grc.upv.es/600

NIST ns2 mobility package

Written by Johann | 13 July 2009
Posted in Vertical Handover

NIST ns2 mobility package compiling bugs fixed !!!

I had so much trouble to compile the ns2 mobility package offered by the NIST under their Seamless and Secure project.

http://w3.antd.nist.gov/seamlessandsecure/

Because of the new GCC and G++ version, the new linux kernel, the new ubuntu distribution, and so on, there was no way to compile this VHO tool.

Thanks to a Chinese Blog (http://www.shagin45.blogspot.com/2008/02/ns2-nistmobility.html) I could finish the patch.

I fixed like a 21 compiling bugs. I made a patch for the ns 2.29 offered by the NIST with the wimax and 801.21 modules. You may free download it from the download area (please free register to do so)

Latex very long tables

Written by Johann | 16 February 2011
Posted in Latex

Hi desperate latex users,

I just copy and paste a solution found for long tables in Latex. Yeah! for those loooonnnggg tables that got cutted when formatting the doc. We can split the table into many consecutive pages.

(extracted from http://iloo.wordpress.com/2010/08/01/latex-entorno-longtable/ and http://fczaja.blogspot.com/2007/04/longtable-latex.html )

\usepackage{longtable}

\begin{center}
	\begin{longtable}{|p{3cm}|p{3cm}|p{3cm}|}
		%primera parte de la tabla
		\caption{Titulo de la tabla.} \\
		\hline
		Titulo 1 & Titulo 2 & Titulo 3 \\
		\hline
		\endfirsthead

		%primera parte de la tabla por pagina
		Continuaci'on de la tabla \\
		\hline
		Titulo 1 & Titulo 2 & Titulo 3 \\
		\hline
		\endhead

		% ultima parte de la tabla por pagina
		Contin'ua en la siguiente p'agina \\
		\endfoot

		% ultima parte de la tabla
		Total 1 & Total 2 & Total3 \\
		\endlastfoot

		%inicio del contenido de la tabla
		dato 11 & dato 12 & dato 13 \\
		\hline
		dato 21 & dato 22 & dato 23 \\
		\hline
		dato 31 & dato 32 & dato 33 \\

		% Mas datos

		\hline
		dato n1 & dato n2 & dato n3 \\
		\hline
	\end{longtable}
\end{center}

Cross-Layer Evaluation of a VANET-based Content Delivery Framework

Written by Johann | 24 September 2009
Posted in Vehicular Networks

Slides presented at the XX Jornadas de Paralelismo.

Currently wireless communications have been significantly improved, being widely used in various areas such as health, education, industry and research. Recently, the automobile industry is adopting wireless technologies in order to improve the services offered, such as safety, traffic updates and infotainment. In particular, vehicular ad-hoc networks are being promoted to improve safety on the road. In this paper we provide a performance evaluation of a content delivery framework over VANETs to assess the viability of this type of schemes. In our experiments we vary several parameters, such as vehicular density, speed, and content demand rate under different environment conditions to evaluate, from a cross layer perspective, the impact they have on metrics such as delivery latency, routing overhead, throughput, and packet loss; in particular, we evaluate user satisfaction through the latency perceived and the network performance via the packet loss. Results show that, despite of the routing overhead generated, the overall performance is improved when speed and vehicular density increase.

Spanish only.

Free available at Download Area. Please register before to download.

Ubuntu 11.04 post-install

Written by Johann | 26 May 2011
Posted in Linux Miscellaneous

After upgrading to 11.04 my laptop and installing from the scratch my desktop I only can say:

Unity rocks!. Anyway, the system is not stable yet and it has some issues to fix just after installation.

For spanish speakers: Aunque el idioma del sistema diga Español, realmente no lo esta. Si descargar software este se descargara e instalará en ingles ya que el sistema esta en ingles, eso debemos corregir inmediatamente de la siguiente forma:

Ir a Sistema - Administracion - Soporte de Idiomas. Ahi le damos a ok a instalar más idiomas (que será una ventana emergente la que nos lo pida) y finalmente buscamos Español en la lista y los subimos con el ratón a la primera posición.

We should enable the Canonical Repositories, it will help to install some other non-free software. It is legal since some companies (Adobe, Sun, ...) have an agreement with Ubuntu

La Laguna 7,8, y 9 de Septiembre 2011

Antecedentes

Estas Jornadas surgieron a partir de las actividades llevadas a cabo en marzo de 1989 por la Dirección General de Telecomunicaciones de Madrid; y se celebran a nivel estatal, ininterrumpidamente, desde 1990. Por tanto, la celebración de este encuentro en La Laguna (Tenerife) representa una continuidad respecto a las ediciones anteriores que tuvieron lugar en Sitges (Barcelona), El Escorial, Valencia, Santander, Málaga, Barcelona, Santiago de Compostela, Cáceres, San Sebastián, La Manga (Murcia), Granada, Valencia, Lérida, Madrid, Almería, Granada, Albacete, Zaragoza, Castellón, A Coruña y Valencia.
Manteniendo el espíritu de anteriores ediciones y tratando de aglutinar a un mayor número de participantes y actividades, en esta XXII edición las Jornadas de Paralelismo se celebran por primera vez conjuntamente con las Jornadas de Computación Reconfigurable y Aplicaciones (JCRA).

Las Jornadas de Paralelismo son un congreso de carácter científico-técnico y ámbito nacional, que supone un encuentro de numerosos investigadores, procedentes de diferentes universidades españolas, con objeto de intercambiar experiencias y presentar ponencias relacionadas con el paralelismo y la arquitectura y redes de computadores en general.

Mas información http://jp2011.pcg.ull.es/

http://www.ieee-wcnc.org/

IEEE WCNC is the premier wireless event that brings together industry professionals and academics from companies, governmental agencies, and universities from around the world to exchange information on advancements in wireless communications and wireless networking technology.

IEEE and IEEE COMMUNICATIONS SOCIETY POLICIES
Each accepted paper must have a FULL (member or non-member) non-refundable registration fee associated with it. If an author has multiple accepted papers, up to three papers may be covered by one registration fee. Registration
fees must be paid prior to uploading the publication-ready version of the accepted paper.
Accepted papers will be published in the IEEE WCNC 2011 Conference Proceedings. Accepted and presented papers will be published in the IEEE WCNC 2011 Conference Proceedings and in IEEE Xplore®.
Technical Papers must be submitted via the EDAS Paper Processing System.
Papers should be written in English with a maximum paper length of 6 printed pages (10-point font) including figures. Papers that are longer than 6 pages will not be reviewed. For your submission, you can use the standard IEEE
templates for Microsoft Word or LaTeX formats found at http://www.ieee.org/go/conferencepublishing/templates.
WWW.IEEE-WCNC.ORG/2011
CALL FOR PAPERS
IEEE WCNC is the premier wireless event for wireless communications researchers, industry professionals, and academics interested in
the latest development and design of wireless systems and networks. Sponsored by the IEEE Communications Society, IEEE WCNC has
a long history of bringing together industry, academia, and regulatory bodies. In 2011, the paradisiacal city of Cancun, Quintana-Roo,
Mexico will become the wireless capital by hosting IEEE WCNC 2011.
IEEE WCNC 2011 will include technical sessions, tutorials, exhibitions and technology and business panels. You are invited to submit
papers in all areas of wireless communications, networks, services, and applications. Potential topics are solicited in, but are not limited
to, the following categories:
IMPORTANT DATES
I. PHY TRACK II. MAC TRACK
III. NETWORKS TRACK IV. SERVICES & APPLICATIONS TRACK
• Interference characterization
• Cognitive radio, ultra-wideband
• Multihop and cooperative communications
• Modulation, coding, diversity
• Equalization, synchronization
• Space-time, MIMO, adaptive antennas
• OFDM, CDMA, spread spectrum
• Channel modeling and characterization
• Interference cancellation and MUD
• Iterative techniques
• Information-theoretic aspects of wireless communications
• Signal processing for wireless communications
• Ultra-Wide Bandwidth communications
• Collaborative signal processing
• Propagation models for high frequency channels
• Position location
• Topology control and establishment in mesh, relay, sensor,
and ad hoc networks
• Mobility, location, and handoff modeling and management
• Wireless routing
• Clustering in mesh, relay, sensor, and ad hoc networks
• Network coding in mesh, relay, sensor, and ad hoc networks
• Multimedia QoS and traffic management
• Wireless broadcast, multicast, and streaming
• Congestion and admission control
• Wireless network security and privacy
• Interworking heterogeneous wireless/wireline networks
• Capacity, throughput, outage, coverage
• Vehicle-to-vehicle communication
• Multiple access techniques
• Cognitive and cooperative MAC
• Collaborative algorithms
• MAC for mesh, ad hoc, relay, and sensor networks
• Network information theory
• Radio resource management and allocation, scheduling
• Cross-layer design, cross-layer security
• Software defined radio, RFID
• Adaptability and reconfigurability
• Wireless MAC protocols: design and analysis
• B3G/4G Systems, WiMAX, WLAN, WPAN
• QoS provisioning in MAC
• Emerging wireless/mobile applications
• Context and location-aware wireless services & applications
• Wireless telemedicine and e-health services
• Intelligent transportation systems
• Cognitive radio and sensor-based applications
• Content distribution in wireless home environment
• Wireless emergency and security systems
• Service oriented architectures, service portability
• SIP based services, multimedia, QoS support, middleware
• Innovative user interfaces, peer-to-peer services for multimedia
• Dynamic services, autonomic services
• Regulations, standards, spectrum management
• Test-bed and prototype implementation of wireless services
• Personalization, service discovery, profiles and profiling
CALL FOR TUTORIALS
Proposals for half/full day tutorials are also solicited
based on the topics listed above or others related to
issues and opportunities for the future of wireless
communications, systems, and applications.
CALL FOR PANELS
Proposals are solicited for Technology/Business Application
Panels in the above mentioned topical areas or others related
to business and policy-related issues and opportunities for the
wireless communications industry.
Full Paper Submittal: Tuesday 5 October 2010.
Acceptance Notification: Monday 29 November 2010 Final Camera Ready Copy: Monday 10 January 2011 11:59 EST
WWW.IEEE-WCNC.ORG/2011

Official Web Page

Wireless networks, including WLAN, WiMax, wireless personal networks, ad hoc, sensor, along with pervasive networks, have witnessed their fastest growth period over the last few years and have become increasingly complex. Nonetheless, performance evaluation and analysis of wireless networks have been conducted mostly through software simulations (e.g., using ns-2 or OPNET tools). Research efforts have recently been directed towards measuring real-world commercial and experimental networks; constructing models based on real-world data and using prototypes to evaluate solutions more realistically and comprehensively and to validate assumptions and conclusions that are reached via simulation experiments.

Performance monitoring, measurement, and evaluation of heterogeneous wired and wireless mobile networks pose a new set of unique challenges due to the particular inherent properties of these systems and due to the characteristics of the wireless transmission medium.

The aim of the 5th ACM PM2HW2N, which last year's edition was held in Tenerife, Canary Islands, Spain, is to bring together scientists, engineers, and practitioners in order to share and exchange their experiences, discuss challenges, and report state-of-the-art and in-progress research on all aspects of performance measurements, monitoring, and evaluation of heterogeneous wired and wireless mobile networks, including, wireless ad hoc, sensor, and ubiquitous networks.

Topics of interest

Topics of interest include, but are not limited to:

»	Performance monitoring tools for wiireless and wired networks;
»	Perfomance tools for ad hoc, sensor, and ubiquitous networks;
»	Tracing and trace analysis;
»	Discrete and Continuous models;
»	Measurement architectures and systems;
»	QoS monitoring and sampling;
»	Measurement-based optimization of heterogeneous networks;
»	Performance analysis and evaluation of mobile services;
»	Automatic performance analysis;
»	Performance evaluation of wirelss sensor networks;
»	Mobility modeling and management;
»	Traffic modeling and engineering;
»	Prototype implementation of wireless/mobile networks and systems;
»	Techniques for prototyping wireless networks;
»	Valiadation through measurement and prototyping
»	Predictive performance models for ad hoc, sensor and ubiquitous networks;
»	Probabilistic models for ad hoc, sensor and ubiquitous networks;
»	Performance and power management control
»	Case studies demonstrating the role of performance monitoring and evaluation;
»	Applications of performance monitoring to improve QoS.

Johann's Virtual Home

SEISCIENTOS is a coordinated project between the Networking Group of the Polytechnic University of Valencia, and the Dept. of Information and Communications Engineering (DIIC) of the University of Murcia. It is funded by the spanish "Ministry of Science and Innovation (MICINN) ".

NIST ns2 mobility package

NIST ns2 mobility package compiling bugs fixed !!!

Latex very long tables

Cross-Layer Evaluation of a VANET-based Content Delivery Framework

Slides presented at the XX Jornadas de Paralelismo.

Ubuntu 11.04 post-install

More Articles...

About me

News

Research Menu

Linux

Login

Visitor Map

La Laguna 7,8, y 9 de Septiembre 2011

Topics of interest