Encontrados 7 documentos, a visualizar página 1 de 1
Location Privacy Extensions for the Host Identity Protocol
Alfredo Matos; Justino Santos; João Girão; Marco Liebsch; Rui AguiarPrivacy and security are key aspects on future communicationnetworks. The Host Identity (HIP) aims to provide identity based security in new networks. In this document we propose an aditional framework based on the Host Identity Protocol that provides location privacy to registered attendents. ; Privacy and security are key aspects on future communicationnetworks. The Host Identity (HIP) aims to provide identi...
A Novel Fast Local Mobility Protocol for Next Generation Mobile Networks
Nuno G. Ferreira; Rui Aguiar; Susana SargentoIn the current mobile cellular networks the terminal mobility support is based on layer-1 and homogenous layer-2 mechanisms. This mobility support is sufficient for current numbers of mobile terminals, however in the future it is expected that this number will significantly increase. In order to handle the increasing number of mobile terminals with distinct layer-2 interfaces and also to support the paradigm of...
Extractor de Relógio Versátil
João Figueiredo; António Perpétua; Rui Aguiar; Atilio GameiroDigital transmission systems have an increasing importance in communications. It is essencial a good clock recovery system for the proper operation of these systems. In this work, a clock extraction circuit has been implemented in an ASIC, requiring only a very reduced number of external components. This is specially oriented towards laboratory applications, and is projected to acquire synchronism with a wide r...
Sistema de Transmissão para Fibra Óptica a 622Mb/s
António Maria Sarsfield; Eduardo de Vasconcelos; Rui Aguiar; Dinis Magalhães dos SantosThe article discusses the implementation of an optical fiber transmission system, witch suports rates of 622 Mb/s (OC-12). The circuit was developed in a CMOS technology of 1.0μm (ES2). It implements the necessary serial-to-parallel and parallel-to-serial conversions. This ASIC designed in Full Custom is particulary suitable for SONET/SDH (STM-4) based applications. ; O artigo ...
Integração duma plataforma ATM no Campus da Universidade de Aveiro
Rui Pereira Coelho; Rui Aguiar; Amaro F. de Sousa; A. Manuel de Oliveira DuarteThis paper presents the integration of an ATM (Asynchronous Transfer Mode) network in the Campus of the University of Aveiro, that conducted to its implementation. After being pointed out the motivations to its implementation, the actual infrastructures and technologies are shortly described. Then, the main guidelines to its possible utilization are drawn. Finally, the resultingconfiguration is presented as wel...
Contribuições da Universidade de Aveiro para a especificação da Rede de Área Lo...
Rui Valadas; Adriano Moreira; Cipriano Lomba; António Tavares; Luís Moreira; Carlos Oliveira; Rui Aguiar; Amaro Sousa; A. M. de oliveira DuarteThis paper introduces the IEEE 802.11 wireless local area network and describes the main contributions given by the University of Aveiro to its specification. ; Este artigo introduz a rede de área local não-cablada IEEE 802.11 e descreve as principais contribuições da Universidade de Aveiro para a sua especificação.
Achievements of the Bologna process reforms: an integrated management and IT ap...
Velada, Raquel; Cardoso, Elsa; Antunes, Ana; Caetano, António; Bento, Rui; Aguiar, Francisco; Silva, Sílvia; Sequeira, Manuel Menezes deIn this paper we will describe a national perspective on the achievements of the Bologna Process in Portugal regarding the academic years of 2006/2007 and 2007/2008, and detail the approach followed at the Lisbon University Institute (ISCTE-IUL). The main objective of the paper is to describe the joint initiative that has been developed at ISCTE-IUL to implement a Decision Support System (DSS) that will enable ...
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