Encontrados 11 documentos, a visualizar página 1 de 2
ENCOURAGE architecture: support for heterogeneous smart grids
Ferreira, Luís Lino; Albano, Michele; Le Guilly, Thibaut; Ramiro, Manuel; Faria, Eduardo; Dueñas, Lara Pérez; Ferreira, Rodrigo; Gaylard, EarlOur society relies on energy for most of its activities. One application domain inciding heavily on the energy budget regards the energy consumption in residential and non-residential buildings. The ever increasing needs for energy, resulting from the industrialization of developing countries and from the limited scalability of the traditional technologies for energy production, raises both problems and opportu...
Handling mobility on a QoS-Aware servicebased framework for mobile systems
Gonçalves, Joel; Ferreira, Luís Lino; Pinho, Luis Miguel; Silva, GuilhermeMobile applications are becoming increasingly more complex and making heavier demands on local system resources. Moreover, mobile systems are nowadays more open, allowing users to add more and more applications, including third-party developed ones. In this perspective, it is increasingly expected that users will want to execute in their devices applications which supersede currently available resources. It is ...
A framework for QoS-Aware service-based mobile systems
Gonçalves, Joel; Ferreira, Luís LinoIn this paper we propose a framework for the support of mobile application with Quality of Service (QoS) requirements, such as voice or video, capable of supporting distributed, migration-capable, QoS-enabled applications on top of the Android Operating system.
Hybrid wired/wireless PROFIBUS architectures: performance study based on simula...
Sousa, Paulo Baltarejo; Ferreira, Luís LinoThe problem of providing a hybrid wired/wireless communications for factory automation systems is still an open issue, notwithstanding the fact that already there are some solutions. This paper describes the role of simulation tools on the validation and performance analysis of two wireless extensions for the PROFIBUS protocol. In one of them, the Intermediate Systems, which connect wired and wireless network s...
Bridge architecture to interconnect hybrid wired/wireless PROFIBUS networks
Sousa, Paulo Baltarejo; Ferreira, Luís LinoThe integration of wired and wireless technologies in modern manufacturing plants is now of paramount importance for the competitiveness of any industry. Being PROFIBUS the most widely used technology in use for industrial communications, several solutions have been proposed to provide PROFIBUS networks with wireless communications. One of them, the bridge-based hybrid wired/wireless PROFIBUS network approach, ...
Probability distribution functions
Sousa, Paulo Baltarejo; Ferreira, Luís LinoThis technical report describes the PDFs which have been implemented to model the behaviours of certain parameters of the Repeater-Based Hybrid Wired/Wireless PROFIBUS Network Simulator (RHW2PNetSim) and Bridge-Based Hybrid Wired/Wireless PROFIBUS Network Simulator (BHW2PNetSim).
Bit error models
Sousa, Paulo Baltarejo; Ferreira, Luís LinoThe use of bit error models in communication simulation has been widely studied. In this technical report we present three models: the Independent Channel Model; the Gilbert-Elliot Model and the Burst-Error Periodic Model.
Tools for simulation output analysis
Sousa, Paulo Baltarejo; Ferreira, Luís LinoThis technical report presents a description of the output data files and the tools used to validate and to extract information from the output data files generated by the Repeater-Based Hybrid Wired/Wireless Network Simulator and the Bridge-Based Hybrid Wired/Wireless Network Simulator.
Repeater vs. Bridge-based hybrid wired/wireless PROFIBUS networks: a comparativ...
Sousa, Paulo; Ferreira, Luís Lino; Alves, MárioIn the last years, several solutions have been proposed to extend PROFIBUS in order to support wired and wireless network stations in the same network. In this paper we compare two of those solutions, one in which the interconnection between wired and wireless stations is made by repeaters and another in which the interconnection is made by bridges. The comparison is both qualitative and numerical, based on sim...
Repeater-based hybrid wired/wireless PROFIBUS network simulator
Sousa, Paulo Baltarejo; Ferreira, Luís LinoThis technical report describes the Repeater-Based Hybrid Wired/Wireless PROFIBUS Network Simulator that implements a simulation model of the repeater-based approach. This approach defines the mechanism to extend the PROFIBUS protocol to supprot wireless communication, in which the interconnection of the wired and wireless segments is done by a intermediate system operating at Physical Layer, as repeater.
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