Encontrados 11 documentos, a visualizar página 1 de 2
Communication middleware for the future mobile internet
Corujo, Daniel NunesA evolução constante em novas tecnologias que providenciam suporte à forma como os nossos dispositivos se ligam, bem como a forma como utilizamos diferentes capacidades e serviços on-line, criou um conjunto sem precedentes de novos desafios que motivam o desenvolvimento de uma recente área de investigação, denominada de Internet Futura. Nesta nova área de investigação, novos aspectos arquiteturais estão ser des...
NGM2M
Corujo, Daniel; Gomes, Diogo; Pinto, Filipe Cabral; Santiago, Fernando; Chainho, Paulo; Pássaro, NunoTodos os indicadores apontam para um crescimento exponencial das comunicações máquina-a-máquina. A utilização da informação de uma panóplia de sensores, associada ao uso dos mais diversos atuadores, permite a criação de um mundo novo de aplicações que abrange os mais distintos sectores de atividade. Os ganhos operacionais, a economia de custos e a reinvenção de processos são alguns dos fatores-chave que contrib...
MINDiT: A framework for media independent access to things
Corujo, Daniel; Lebre, Marcelo; Gomes, Diogo; Aguiar, RuiDeploying smart environments often implies a plethora of co-existing devices and services, each with their own set of features, requirements and interfacing characteristics. These intricate scenarios are further exacerbated when such devices are coupled with networking capabilities, globalizing their interaction opportunities to create the so-called Internet of Things. In such interconnected heterogeneous envir...
Architecture for orchestration of M2M services
Pires, Gustavo; Antunes, Mário; Corujo, Daniel; Gomes, Diogo; Barraca, João Paulo; Aguiar, Rui L.The past few years, miniaturization has allowed usto imbue computers into everyday devices. This in turn hasenabled these devices to communicate with each other, and in doing so, allows us to collect a wealth of information, moreaccurately and with greater availability than ever before. Thisphenomenon is known as the Internet of Things. It allows smart environments to truly behave in an intelligent manner by us...
EMICOM: Enhanced Media Independent COnnection Manager
Prata, André; Corujo, Daniel; Gonçalves, Pedro; Gomes, DiogoWith the increasing amount of mobile interfaces combining different kinds of access technologies, ranging from Wi-Fi to 3G and LTE, the integration of flexible and mediaindependent link control mechanisms becomes of paramount importance. By employing an abstract way of obtaining access link status information and exercising control over the network interface operations, these control mechanisms become able to o...
Media independent transport service for ambient intelligence
Lebre, Marcelo; Corujo, Daniel; Gomes, Diogo; Aguiar, RuiThe evolution on ambient intelligence technologies, such as sensor networks, propelled a universe of very diverse types of both data and hardware equipment creating one of the most heterogeneous network environments. This diversity brings to light the main issue we aim to address in this paper: the need for a common ground that enables communications between the different heterogeneous equipments and technologi...
Context transport based on 802.21 MIH protocol
Marcelo, Lebre; Corujo, Daniel; Gomes, Diogo; Aguiar, RuiSensor networks, along with the sensorial output from their nodes, provide an information source to enhance and enrich upper layers mechanisms. The 802.21 MIH protocol provides a cross layer framework that can be extended for sensor information transport. At the same time, it creates an abstraction layer that removes hardware and software specificity from sensor nodes. On a higher level of the network stack, th...
Sensor context information for energy-efficient optimization of wireless proced...
Corujo, Daniel; Lebre, Marcelo; Gomes, Diogo; Aguiar, Rui LThe wide deployment of Wireless Local Area Networks (WLAN) we are witnessing today increases connectivity opportunities for mobile terminal devices, such as smartphones. However, continuous scanning for WLAN points of attachment can be a power exhausting mechanism for such battery-powered devices. These mobile devices, besides being equipped with different wireless access interfaces, are also coupled with senso...
Media-Independent Multicast Signalling for Enhanced Video Performance in the ME...
Corujo, Daniel; Figueiredo, Sergio; Aguiar, RuiWith the foreseen major increase in video traffic over the coming years, the current Internet’s design is being perceived as inefficient for handling the demanding flow of video over wireless access networks, populated by an ever increasing number of mobile terminals. The MEDIEVAL project aims to evolve the current Internet architecture to provide an optimized video support in all layers of the protocol stack. ...
Utilização de IEEE 802.21 em Handovers Controlados por Rede
Corujo, Daniel; Aguiar, RuiEste artigo descreve e avalia a aplicação da norma IEEX 802.11 a um ambiente de mobilidade IP em redes heterogéneas que os handovers são controlados pela rede. A complexidade de gestão de mobilidade, acrescida pelas diferentes tecnologias às quais o terminal se pode ligar, requer a interação entre entidades a processar informaçâo relativa aos dispositivos de rede existentes no terminal (redes detectadas e quali...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||