Mobile Station
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. A System to improve the management of 5G and IoT Networks by determining the Mobile Position
Abstract The interference in adjacent cells and the control of the boundaries have being vastly investigated since the conception of the first cell phone networks. A very large number of small cells are required for new 5G mobile networks, and therefore it is even more important to determine the correct mobile station positioning as well as the control bound
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 19/06/2019
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2. Melhoria de produtividade utilizando estações automatizadas móveis em linha de montagem de veículos em indústria automotiva do Vale do Paraíba
The purpose of this presentation is to seek greater productivity by deploying significant productivity improvements by applying the tools of lean manufacturing in an assembly area for vehicles already considered "lean" on the premise that there are always opportunities to improve the production process. This work presents an innovation in applying the tools
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011
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3. Reducing the rate of fall call GSM mobile network by means of adjustment of parameters of coverage / Redução da taxa de queda de chamada em rede celular GSM por meio de ajustes dos parâmetros de cobertura
A study about the main causes of dropped calls in mobile network cell GSM is made by means of statistical traffic analysis. The aim is to minimize the effect of these causes through coverage parameters changes, such as dynamical potency control, coverage border between cells, correct definition of neighboring cells. The reduction of dropped call rate by mean
Publicado em: 2008
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4. Localização de usuários usando o sistema celular. / Users localization using cellular system.
The mobile location technique using the cellular system received a special attention from the telecommunication manufacturers and operators, regarding the need of accomplishing the established demands by the emergency service calls and other commercial ones. This study analyzes the main location methods proposed in the literature, including, in each one, the
Publicado em: 2007
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5. Aplication of HACCP methodology - hazard analysis and critical control point - as a water reuse tool in the industry: model to the aromatic and fragrancy industry. / Aplicação da metodologia de APPCC - análise de perigos e pontos críticos de controle - como ferramenta para reúso de água na indústria: modelo para indústria de aromas e essências.
One of the major problems faced by the food industry is their enormous water consumption is their productive processes. Water conservation and reuse is a real and increasing necessity. This dissertation discusses rational use concepts, industrial water reuse, quality management systems in the condiment sector of the food industry. The main objective of this
Publicado em: 2007
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6. Avaliação dos modelos de predição de propagação para telefonia móvel celular na cidade do Natal
The development of wireless telecommunication in the last years has been great. It has been taking academics to conceive new ideas and techniques. Their aims are to increase the capacity and the quality of the systems services. Cells that are smaller every time, frequencies that are every time higher and environments that get more and more complex, all those
Publicado em: 2006
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7. Investigação sobre a emissão e caracterização dos hicrocarbonetos policiclicos aromaticos (HPA) na bacia do rio Atibaia / Investigation on emissions and characterization of polycyclic aromatic hydrocarbons (PAHs) in the Atibaia river basin
In this work, 18 PAHs were analyzed in sediments as well as in the suspended particulated matter in seven sampling points distributed along the Atibaia river basin during four sampling campaigns. Results show higher PAHs concentration during the dry season. The most impacted sampling point was at the Campinas potable water withdraw station with PAHs total co
Publicado em: 2006
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8. Indexação de objetos móveis : uma estratégia para garantir a alocação dinâmica de canais em redes celulares
In cellular networks, communication among mobile devices is accomplished through base stations (fixed antennas). A base station allocates communication channels whenever a mobile device (a cell phone, for example) in its coverage area requests communication with some other device (mobile or fixed). With the rapidly growing number of mobile devices, the use o
Publicado em: 2005
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9. Implementação de serviços baseados em localização utilizando arquiteturas e padrões abertos
Location-Based Services (LBS) are services which use geographic information to obtain and generate useful information for users such as the location of the nearest gas station, for instance, or the best route for the nearest hospital by taking the user s current position as a starting point. There are several initiatives for the definition of standards aimin
Publicado em: 2005
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10. Métodos de subgradiente e de dilatação de espaços aplicados ao projeto de rede de telefonia móvel
This work presents a comparative study of Lagrangean relaxation using Subgradient and Spaces Dilatation methods to solve the generalized assignment problem in diversity and capacity constraints (GAP-DC). This problem,appears during the planning of a mobile telephone network. It consists in assigning radio base stations to hubs at a minimal cost, so that the
Publicado em: 2005
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11. Monitoração de controle de Tilt e Azimute das antenas de estações radio base da telefonia celular / Monitoring and control of antenna Tilt and Azimuth for radio-base station
A partir dos meados dos anos 90, com o surgimento da telefonia celular analógica e posteriormente digital, o número de usuários da telefonia celular aumenta vertiginosamente e em 2004 já supera no Brasil o número de telefones fixos, 54 milhões de celulares e 49 milhões de telefones fixos (Dados Teleco de Junho/2004). Este trabalho descreve de uma form
Publicado em: 2004
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12. cellular networks; Mobile networks / Controle de admissÃo de chamas e reserva de recursos em redes mÃveis celulares
Handoff in wireless/mobile networks is the mechanism that transfers an ongoing call from the current cell as the mobile station moves through the coverage area of the system. User applications may experience performance degradation due to handoffs from user mobility. If the target cell does not have sufficient available bandwidth, the call will be dropped. F
Publicado em: 2004