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Previous issue date: 2015-03-13 / CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico / A utilização de small cells em redes móveis heterogêneas (seja 3G, 4G e futuramente
5G) para tráfego indoor tem sido considerada como a melhor solução para suprir o
crescimento do tráfego móvel, devido reduzir o consumo de energia da rede e por fornecer
alta capacidade. Por outro lado, o aumento da quantidade de small cells implantadas implica
na ampliação da rede backhaul, que aumenta o consumo de energia na rede e ameaça os
ganhos das small cells nesse tópico. Além disso, dependendo da escolha do tipo backhaul o
consumo de energia na rede heterogênea pode elevar consideravelmente. Neste contexto, este
trabalho visa fornecer uma metodologia para avaliar e identificar possíveis gargalos de
consumo de energia na rede móvel, considerando tanto a parte wireless quanto a estrutura
backhaul. A metodologia considera a demanda de tráfego gerado na cidade, cenário para
implantação e operação de redes heterogêneas (small cells) e dimensionamento do backhaul
por segmento (Cell Site, Hub Site e Central Office). Adotando esta metodologia, o estudo
deste trabalho avalia e compara três tipos de arquitetura backhaul para redes internas baseadas
em Femtocell convencional ou Femtocell Wireless over Cable (FemtoWoC): Fiber-to-the-
Building, Fiber-to-the-Curb e Fiber-to-the-Home. Constatou-se que o principal gargalo
energético do backhaul se encontra no segmento responsável por agregar o tráfego das small
cells (Cell Site). Contudo, empregando arquiteturas e equipamentos mais eficientes, como
FemtoWoC, no segmento Cell Site pode-se reduzir significativamente o consumo total de
energia no backhaul, principalmente em arquiteturas baseada em cobre na última milha. / The use of small cells in heterogeneous networks (either 3G, 4G and 5G future) for
indoor traffic has been regarded as the best solution to meet the growth of mobile traffic due
to reduce network power consumption and to guarantee the high capacities. Moreover,
increasing the amount of small cell deployment implies in the expansion of the backhaul
network, which causes an increase on the network power consumption, and threatens the
small cells gains in terms of energy. Furthermore, the energy consumption in heterogeneous
network can increase considerably depending on the choice of the type backhauling.
Considering this background, this work aims to provide a methodology to assess and identify
possible energy consumption bottlenecks in the mobile network, considering both the wireless
part as the backhaul infrastructure. The methodology considers the demand of traffic
generated in the city, scenario to implementation and operation of heterogeneous networks
(small cells), and dimensioning backhaul by segment (Cell Site, Hub Site e Central Office).
Adopting this methodology, the study evaluates and compares three types of backhaul
architecture for conventional Femtocell or Femtocell Wireless over Cable (FemtoWoC)
network: Fiber-to-the-Building, Fiber-to-the-Curb e Fiber-to-the-Home. It was found that the
main bottleneck in the backhaul architecture is the segment that is responsible for aggregating
traffic from small cells (Cell Site). However, adopt architectures and equipment with high
energy efficiency, as FemtoWoC, in the segment bottleneck reduce significantly the total
power consumption in the backhaul, mainly architectures based on copper in the last mile.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufpa.br:2011/7415 |
| Date | 13 March 2015 |
| Creators | LOPES, Albert Richard Moraes |
| Contributors | COSTA, João Crisóstomo Weyl Albuquerque |
| Publisher | Universidade Federal do Pará, Programa de Pós-Graduação em Engenharia Elétrica, UFPA, Brasil, Instituto de Tecnologia |
| 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 UFPA, instname:Universidade Federal do Pará, instacron:UFPA |
| Rights | info:eu-repo/semantics/openAccess |
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