Building the Future Internet through FIRE

The Internet as we know it today is the result of a continuous activity for improving network communications, end user services, computational processes and also information technology infrastructures. The Internet has become a critical infrastructure for the human-being by offering complex networking services and end-user applications that all together have transformed all aspects, mainly economical, of our lives. Recently, with the advent of new paradigms and the progress in wireless technology, sensor networks and information systems and also the inexorable shift towards everything connected paradigm, first as known as the Internet of Things and lately envisioning into the Internet of Everything, a data-driven society has been created. In a data-driven society, productivity, knowledge, and experience are dependent on increasingly open, dynamic, interdependent and complex Internet services. The challenge for the Internet of the Future design is to build robust enabling technologies, implement and deploy adaptive systems, to create business opportunities considering increasing uncertainties and emergent systemic behaviors where humans and machines seamlessly cooperate

Building the Future Internet through FIRE

The Internet as we know it today is the result of a continuous activity for improving network communications, end user services, computational processes and also information technology infrastructures. The Internet has become a critical infrastructure for the human-being by offering complex networking services and end-user applications that all together have transformed all aspects, mainly economical, of our lives. Recently, with the advent of new paradigms and the progress in wireless technology, sensor networks and information systems and also the inexorable shift towards everything connected paradigm, first as known as the Internet of Things and lately envisioning into the Internet of Everything, a data-driven society has been created. In a data-driven society, productivity, knowledge, and experience are dependent on increasingly open, dynamic, interdependent and complex Internet services. The challenge for the Internet of the Future design is to build robust enabling technologies, implement and deploy adaptive systems, to create business opportunities considering increasing uncertainties and emergent systemic behaviors where humans and machines seamlessly cooperate

Creation of value with open source software in the telecommunications field

Tese de doutoramento. Engenharia Electrotécnica e de Computadores. Faculdade de Engenharia. Universidade do Porto. 200

Proceedings of the Third Edition of the Annual Conference on Wireless On-demand Network Systems and Services (WONS 2006)

Ce fichier regroupe en un seul documents l'ensemble des articles accéptés pour la conférences WONS2006/http://citi.insa-lyon.fr/wons2006/index.htmlThis year, 56 papers were submitted. From the Open Call submissions we accepted 16 papers as full papers (up to 12 pages) and 8 papers as short papers (up to 6 pages). All the accepted papers will be presented orally in the Workshop sessions. More precisely, the selected papers have been organized in 7 session: Channel access and scheduling, Energy-aware Protocols, QoS in Mobile Ad-Hoc networks, Multihop Performance Issues, Wireless Internet, Applications and finally Security Issues. The papers (and authors) come from all parts of the world, confirming the international stature of this Workshop. The majority of the contributions are from Europe (France, Germany, Greece, Italy, Netherlands, Norway, Switzerland, UK). However, a significant number is from Australia, Brazil, Canada, Iran, Korea and USA. The proceedings also include two invited papers. We take this opportunity to thank all the authors who submitted their papers to WONS 2006. You helped make this event again a success

A distributed intelligent network based on CORBA and SCTP

The telecommunications services marketplace is undergoing radical change due to the rapid convergence and evolution of telecommunications and computing technologies. Traditionally telecommunications service providers’ ability to deliver network services has been through Intelligent Network (IN) platforms. The IN may be characterised as envisioning centralised processing of distributed service requests from a limited number of quasi-proprietary nodes with inflexible connections to the network management system and third party networks. The nodes are inter-linked by the operator’s highly reliable but expensive SS.7 network. To leverage this technology as the core of new multi-media services several key technical challenges must be overcome. These include: integration of the IN with new technologies for service delivery, enhanced integration with network management services, enabling third party service providers and reducing operating costs by using more general-purpose computing and networking equipment. In this thesis we present a general architecture that defines the framework and techniques required to realise an open, flexible, middleware (CORBA)-based distributed intelligent network (DIN). This extensible architecture naturally encapsulates the full range of traditional service network technologies, for example IN (fixed network), GSM-MAP and CAMEL. Fundamental to this architecture are mechanisms for inter-working with the existing IN infrastructure, to enable gradual migration within a domain and inter-working between IN and DIN domains. The DIN architecture compliments current research on third party service provision, service management and integration Internet-based servers. Given the dependence of such a distributed service platform on the transport network that links computational nodes, this thesis also includes a detailed study of the emergent IP-based telecommunications transport protocol of choice, Stream Control Transmission Protocol (SCTP). In order to comply with the rigorous performance constraints of this domain, prototyping, simulation and analytic modelling of the DIN based on SCTP have been carried out. This includes the first detailed analysis of the operation of SCTP congestion controls under a variety of network conditions leading to a number of suggested improvements in the operation of the protocol. Finally we describe a new analytic framework for dimensioning networks with competing multi-homed SCTP flows in a DIN. This framework can be used for any multi-homed SCTP network e.g. one transporting SIP or HTTP

Cálculo científico distribuido sobre clientes móviles indeterminados en redes MANETs

La tecnología wireless en los últimos años ha experimentado una expansión sin precedentes, alcanzando hasta el lugar más recóndito de la tierra. La tecnología inalámbrica permite la creación de redes sin la necesidad de cables, dando al usuario de este tipo de redes la libertad de moverse por su entorno sin la restricción de movilidad asociada a tener una conexión cableada. El mejor exponente del salto tecnológico que experimentan las redes wireless son las MANET (Mobile Ad hoc Networks, Redes móviles ad hoc) que se presentan como la arquitectura de comunicación más flexible que existe actualmente. Este tipo de redes esta integrado por sistemas autónomos móviles con capacidades de enrutamiento y conectados a través de enlaces inalámbricos formando un grafo de comunicación arbitrario. Utilizar las redes móviles ad hoc para desarrollar un esquema de computación distribuida sobre dispositivos heterogéneos que pueda explotar las crecientes capacidades de cómputo de estos, es la motivación principal del estudio plasmado en este documento. La mayor dificultad que se debe superar es encontrar un mecanismo para manejar la indeterminación de las unidades de red disponibles para balancear la carga en el procesamiento distribuido. Esta indeterminación es provocada mayoritariamente por la movilidad de los nodos que conforman estas redes. En este trabajo se propone el diseño de un protocolo que combina un enfoque para lidiar con la indeterminación de clientes al momento de comenzar un cálculo científico distribuido basado en un diseño cross layer con un mecanismo que agrupa los dispositivos presentes en una MANET en clusters, sacando rédito de la heterogeneidad inherente a este tipo de redes a fin de determinar que dispositivos serán los lideres de los agrupamientos conformados. La propuesta de solución implementada se basa en el protocolo de enrutamiento reactivo AODV (Ad hoc On-demand Distance Vector), la cual modifica los formatos de mensajes para dar soporte a toda la nueva funcionalidad. El método de validación de la propuesta presentada en esta investigación se delinea a través de la definición de diversas pruebas de rendimiento bajo diferentes valores en los parámetros que fijan: el número de dispositivos, la movilidad, el tamaño del área de circulación, entre otros; que al dimensionar los valores registrados vía métricas estándar permitirán arribar a los resultados de su desempeño.Facultad de Informátic