Francisco Fontes

This deliverable provides a first report on communication and dissemination actions progress as well as on resulting awareness and outcome from them. In addition to it, the document summarizes the standardization and open source contributions performed till M12, the impact that these have been perceived to have as well as the plans for further standardization contributions till the end of the project.

This deliverable reports the efforts of the three WP6 Tasks. It concludes all the efforts done at WP6, finalizing the control framework, the SLA-base deployment design, and completes the symbolic execution checking and anomaly detection tools implementation.

This deliverable provides the second report on communication and dissemination actions progress as well as on resulting awareness and outcome from them. In addition to it, the document summarises the standardisation and open source contributions performed until M23, the impact that these have been perceived to have, as well as the plans for further standardisation contributions until the end of the project.

Description of network services for each Facility-site. Includes configuration of Infrastructure, RAN,<br> Core and MANO components and of the interconnections among them. Used as a reference for the<br> orchestration and testing activities. Description of the cross Facility-site services and interconnection<br> requirements and configurations.

Carlos Parada, Francisco Fontes, Jorge Carapinha {est-c-parada, fontes, jorgec}@ptinovacao.pt Portugal Telecom INovação, SA, 3810-106 Aveiro ... Solange Lima, Paulo Carvalho {solange, pmmc}@di.uminho.pt Departamento de Informática, Universidade do ...

This paper presents a next generation network demonstrator currently under deployment in Aveiro. The demonstrator supports mobile IP with fast handovers with integrated QoS and AAAC issues considerations. A monitoring system provides network information adequate for QoS management, and a specially built QoS Broker is able to manage multiple types of Access Routers. The demonstrator has been tested with some applications, and is currently under refinement.

Current trends in communication networks point to an aggregation of all kind of traffic (data, voice, etc) in a common network. The usage of IP as a transport technology solves some of the interworking problems between different technologies, but at the same time, the IP Quality of Service (QoS) mechanisms are not fully adapted to the reality of QoS-aware mobility between different technologies. This poses strong problems in terms of network performance, QoS provisioning, Authentication, Authorization, Accounting and ...

Community Networks have been implemented for the last few years on several cities, most of them supported by local governments or by experimental projects. Portugal was not an exception and since the early 1990s some small-scale projects were deployed. By the end of 1998, the Portuguese government sponsored a new wave of community networks under the scope of the project ‘Digital Cities’, promoting the use of new technologies and the development of enhanced services for the citizen. The city of Aveiro was the first of a new generation of Digital Cities in Portugal. This paper describes, in detail, network implementation options for this community network, concerning both its core and access enabling technologies, as well as the services that are being provided, including description and architectures for each of the relevant ones.

Actual management systems do not fulfil a number of requirements identified as mandatory for an efficient and effective network management. The simple adoption of solutions like Java's RMI or OMG's CORBA, do not solve all problems and may originate others. This paper describes the architectural and functional model for the proposed management system, that satisfy a number of identified requirements. Special attention is devoted to the information model, proposing a new structure for it. Within the text some simple application examples of ATM networks are given. Finally, a brief analysis of two distinct ATM switches from different vendors is given referring to the possible added value that the proposed system can bring when managing those devices

... Download: http://isabel.dit.upm.es/papers/itsres.pdf CACHED: Download as a PDF. by Carlos Acua Pedro , Juan Quemada Vives , Tomas P. De Miguel , Arturo Azcorra , Santiago Pavón , Vasco Lagarto , Joao Bastos , Francisco Fontes , Jose Domingues [cet. ...

This paper decribes the 1995 RACE Summer School ABC'95. ABC'95 has been a massive event where up to forteen auditoriums spread all over Europe have been interconnected during one week. The ISABEL CSCW application together with a videoconferencing network and a ...

The access network is under intense research because a significant part of the global infrastructure investment is in that sector. This work fits exactly on the access network, particularly over a hybrid fibre coaxial (HFC) access network with end-to-end ATM bi-directional connections. This paper is structured in two parts. The first describes the access network and technologies used and presents a brief overview of the network model constructed, which has been experimentally validated, the results obtained with simulation and some experimental measurements. The model was designed using the OPNET software package. The second part gives an evolution perspective by using the network model employed in simulation. This allows the extrapolation of the system behaviour in network configurations not only not tested in the field, but also not possible to implement in practice within the project time schedule, namely a rise on the number of users and a dynamic medium access control (MAC) algorithm

WiMAX, as a Broadband Wireless Access technology for Metropolitan Area Networks, supporting fixed and mobile terminals, is very promising for Next Generation Networks. Emergency Services can also strongly benefit from WiMAX features, allowing the exploitation of novel application scenarios and business models. This paper presents a set of scenarios, such as Environmental Monitoring, Telemedicine and Fire Prevention, defined and implemented in several European testbeds, interconnected by the European research network GEANT 2, in the framework of the WEIRD project. In particular, we focus our attention on the scenario implemented in the Portuguese testbed - Fire Prevention - providing a detailed description about the testbed planning, implementation and evaluation.

WiMAX is emerging as a broadband wireless access technology to satisfy end user expectations, containing a new set of advantages in terms of throughput, coverage and QoS support at the MAC level which allows convergence of several different types of applications and services. For that reason, the allocation of resources or scheduling becomes of greater importance. This paper focuses on a cross-layer scheduling optimization solution for IEEE 802.16. The relevant features of the proposed packet scheduling optimization scheme consist: of prioritization of users within the same traffic class, allowing for example to an operator, differentiated treatment among users, for instance distinguishing between premium or gold users and silver users; and also cross layer optimization which implies radio resource optimization and a more effective scheduler decision. Simulation scenarios are presented to demonstrate how the scheduling solution allocates resources through particular WiMAX MAC layer implementation in the NS-2 simulator. Results show that the new mechanism implementation results in an improvement to the simple Round Robin fashion present in the original simulation model, being able to increase differentiation between different classes and decrease packets delay, due to its cross-layer processing and traffic prioritization.

Abstract-Ubiquitous broadband Internet access is an important requirement to satisfy user demands and support a new set of real time services and applications. WiMAX, a Broadband Wireless Access solution for Wireless Metropolitan Area Networks, covering large distances with ...

Abstract Today's Internet access technologies are not able to provide broadband connectivity to all areas in a cost-effective way for telecom operators. Wired technologies still require a noteworthy investment in cabling infrastructures, whereas wireless access technologies cannot deliver high-speed connections to several users simultaneously. To address this issue, a very interesting solution has been defined by the IEEE 802.16 working group, in particular the IEEE 802.16-2004 and IEEE 802.16 e-2005 standards. IEEE ...

Ubiquitous broadband Internet access is an important requirement to satisfy user demands and support a new set of real time services and applications. IEEE 802.16, as a broadband wireless access technology, can significantly contribute in this area. It is able to provide high throughput over large distances, with intrinsic QoS support, in line-of-Sight and Non- line-of-Sight environments. This paper discusses a network architecture, based on IEEE 802.16 d compliant equipments, which is able to support real-time services with QoS integration through dynamic configuration of the 802.16 channel, using the NSIS framework. Tests have been carried out to evaluate the QoS performance of the defined architecture, demonstrating that it is perfectly capable of handling and supporting real time services, using dynamic configuration of the 802.16 channel, without introducing an excessive cost in the network.