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Previous issue date: 2017-12-07 / Este trabalho tem como objetivo realizar um estudo sobre a aplica??o de redes
LTE no espectro ISM (Industrial Scientific and Medical) e seu consequente impacto
sobre tecnologias comumente coexistentes na mesma faixa de frequ?ncia. Inicialmente,
? realizada uma elucida??o te?rica sobre as regulamenta??es que envolvem o uso de
espectro n?o-licenciado. Na sequ?ncia, s?o apresentadas as principais solu??es de
coexist?ncia do LTE nesse meio, destacando-se o mecanismo recentemente padronizado
pelo 3GPP, o LTE-LBT, e tecnologias espec?ficas de empresas pioneiras na ?rea, tais
como a solu??o LTE-DC. Como elemento pr?tico complementar ? investiga??o te?rica
inicial, s?o desenvolvidas an?lises de desempenho das respectivas solu??es utilizando
o simulador ns-3. A novidade do trabalho ? materializada pela apresenta??o de uma
proposta de solu??o para o mecanismo Carrier-Sensing Adaptive Transmission (CSAT).
Essa solu??o, baseada em aprendizado de m?quina, visa melhorar o desempenho conjunto
dos sistemas que coexistem na faixa ISM. Este trabalho tamb?m prop?e uma solu??o de
coexist?ncia do LTE-DC consigo pr?prio a partir de uma abordagem utilizando teoria
dos jogos. Essas solu??es s?o comparada com as solu??es cl?ssicas e o seus ganhos s?o
evidenciado em cen?rios definidos por ?rg?os de padroniza??o mundial. / This work aims to perform a study about the application of LTE networks in
ISM (Industrial Scientific and Medical) spectrum and its impact over technologies
that communly coexist in the same frequency range. Initially, it?s made a theoretical
elucidation about regulamentations involving the non licensed spectrum usage. In
sequence, it?s presented the main LTE coexistence solutions in this field, highlighting
the recent mechanism standardized by 3GPP, the LTE-LBT, and specific technologies
of pioneering companies in this domain, like LTE-DC solution. As a practical
element complementary to the initial theoretical investigation, it?s developed performance
analyzes of the respective solutions using ns-3 simulator. The novelty of the work is
materialized by the presentation of a solution proposal for the Carrier-Sensing Adaptive
Transmission (CSAT). This solution, based on machine learning, aims to improve the
joint performance of systems that coexist in the ISM band. This work also propose a
solution for LTE-DC self-coexistence by a game theory approach. These solutions are
compared to the classical ones and their gains are evidenced in scenarios defined by global
standardization institutions.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24974 |
| Date | 07 December 2017 |
| Creators | Santana, Pedro Maia de |
| Contributors | 26550455804, Martins, Allan de Medeiros, 01979076448, Medeiros, ?lvaro Augusto Machado de, 02155375484, Sousa J?nior, Vicente Angelo de |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA EL?TRICA E DE COMPUTA??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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