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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Ambiente h?brido para avalia??o de redes sem-fio

Silvano, Gilles Velleneuve Trindade 04 September 2017 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-03-12T13:20:57Z No. of bitstreams: 1 GillesVelleneuveTrindadeSilvano_DISSERT.pdf: 2067675 bytes, checksum: d29278b2012d7b784ea6116d148d7e95 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-03-14T13:19:37Z (GMT) No. of bitstreams: 1 GillesVelleneuveTrindadeSilvano_DISSERT.pdf: 2067675 bytes, checksum: d29278b2012d7b784ea6116d148d7e95 (MD5) / Made available in DSpace on 2018-03-14T13:19:37Z (GMT). No. of bitstreams: 1 GillesVelleneuveTrindadeSilvano_DISSERT.pdf: 2067675 bytes, checksum: d29278b2012d7b784ea6116d148d7e95 (MD5) Previous issue date: 2017-09-04 / Redes sem-fio t?m evolu?do consideravelmente nos ?ltimos anos e consequentemente tem sido aplicadas nos mais diversos cen?rios, desde redes locais sem-fios at? redes de sensores sem-fios para Internet das Coisas (Internet of Things - IoT). Cada nova aplica??o apresenta suas pr?prias caracter?sticas, especificidades e consequentemente novos desafios que devem ser vencidos para que ela se torne vi?vel e seja enviada para produ??o e embarcada em dispositivos reais. Por?m, os simuladores de redes em geral n?o fornecem algumas importantes funcionalidades para as simula??es e avalia??es de aplica??es de redes sem-fio. Por exemplo, os simuladores exigem implementa??o da aplica??o direcionada para o ambiente do simulador exigindo o dobro de esfor?o dos desenvolvedores e problemas de integra??o entre as tecnologias utilizadas durante os testes e as utilizadas para embarcar a aplica??o em dispositivos reais. Al?m disso, os simuladores devem dar suporte a em cen?rios mais complexos de redes sem-fio como ambientes com alta mobilidade ou alta densidade de n?s. Por fim, o comportamento simulado por softwares e n?o na an?lise de dispositivos reais utilizando c?digo final, compilado para os dispositivos reais finais, n?o fornece a melhor visualiza??o do comportamento da aplica??o simulada. Para preencher essas lacunas desenvolvemos o LVWNet: um ambiente e simula??o baseado em virtualiza??o Linux para a avalia??o de aplica??es de redes sem-fio que oferece suporte a simula??o de c?digo real e ambiente h?brido de integra??o entre n?s virtuais e dispositivos reais, al?m de flexibilidade e baixo consumo de recursos. Nesse trabalho s?o apresentados os detalhes de implementa??o do LVWNEt e suas funcionalidades b?sicas atrav?s da simula??o de uma rede sem-fio IEEE 802.11s em um ambiente h?brido com suporte a mobilidade, no qual foram desenvolvidos testes para avaliar a autenticidade dos dados de simula??o obtidos durante os testes que comprovaram sua efici?ncia como ambiente de avalia??o de redes sem-fios. / Wireless networks have evolved considerably in recent years and have consequently been applied in a wide range of scenarios, from wireless local area networks to Internetof- Things (IoT) wireless sensor networks. Each new application presents its own characteristics, specificities and consequently new challenges that must be overcome in order for it to become viable and be sent to production and shipped to real devices. However, network simulators generally do not provide some important functionalities for the simulations and evaluations of wireless applications. For example, simulators require implementation of the application targeted to the simulator environment requiring twice the effort of the developers and problems of integration between the technologies used during the tests and those used to ship the application to real devices. In addition, simulators must support in more complex scenarios of wireless networks such as environments with high mobility or high node density. Finally, software-simulated behavior rather than real device analysis using final code, compiled for the final real devices, does not provide the best visualization of simulated application behavior. To fill these gaps we have developed LVWNet: a Linux-based virtualization-based simulation and environment for evaluating wireless network applications that supports real-world simulation and hybrid integration between virtual nodes and real devices, as well as flexibility and low resource consumption. This paper presents the implementation details of the LVWNEt and its basic functionalities through the simulation of an IEEE 802.11s wireless network in a hybrid environment with mobility support, in which tests were developed to evaluate the authenticity of the simulation data obtained during the tests that have proven their efficiency as evaluation environment of wireless networks.

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