Navegando por Assunto "Quality of service"

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Acesso aberto (Open Access)
Custo total de propriedade para infraestruturas de comunicações 5G para smart grid
(Universidade Federal do Pará, 2019-01-24) MELO, Paulo Tássio da Luz; SILVA, Marcelino Silva da; http://lattes.cnpq.br/7080513172499497
Smart Grid communications networks are considerably different from the traditional communica-tion systems used to access the Internet when considering users, applications, Quality of service and, especially, the impacts/losses due to malfunctions. Such data networks are generally owned and used exclusively by electrical system operators and require a high financial investment. There fore, this paper presents an economic analysis to compare different possibilities of data network deployment for the Smart Grid. The results showed that for the proposed scenario, 5G compared toother technologies, obtained the best evaluation for the implementation of the communication of a network of data applied to the Smart Grid, since the data of Quality of Service and the results obtained in the Total Cost of Property, showed that in the medium and long term the 5 Ghas its lower cost when faced with expenditures of other communication technologies, presenting 100% and 99.02% of IEDs with Quality of Service for uplink and downlink maximum, and the average IEDs served, is 100% for uplink and 99.4% for downlink in NORMAL and STRIP mode, respectively.
Acesso aberto (Open Access)
Proposta de arquitetura para o estabelecimento dinâmico de conexões determinísticas e busca de recursos multidomínio em redes grid OBS baseadas no GMPLS
(Universidade Federal do Pará, 2011-06-17) NUNES, Anderson Marques; CERQUEIRA, Eduardo Coelho; http://lattes.cnpq.br/1028151705135221
The processing capacity of research institutions has been growing significantly as processors and workstations increasingly powerful emerging in the market. Considering the improvement of performance in the area computer networks and seeking to fill the demand for ever greater processing, the idea to use networked computers as independent platform for running parallel applications, thus creating the area grid computing. In a network that is under the same administrative domain, is common for there to share resources such as disks, printers, etc. But when the network goes beyond an administrative domain, this sharing becomes very limited. The purpose of computing grids is to allow sharing resources even if they are scattered in different areas administration. This thesis proposes an architecture for dynamic establishment of connections multidomain which makes use of optical burst switching (OBS) using a GMPLS control plane (Generalized Multiprotocol Label Switching). The architecture is based on storing information about grid resources of autonomous systems in a separate component called GOBS Root Server (Grid OBS) and the use of explicit routing to reserve resources along a route that satisfies the performance constraints of an application. The validation of the proposal is made through simulations that show that the architecture is capable of levels of performance differed according to the application class and provides a better utilization of network resources and computing.