Navegando por Assunto "C-RAN - Centralized radio acess network"

Agora exibindo 1 - 2 de 2

Acesso aberto (Open Access)
Análise de heurísticas de implantação de hetnets densas
(Universidade Federal do Pará, 2017-02-24) ARAÚJO, Welton Vasconcelos; CARDOSO, Diego Lisboa; http://lattes.cnpq.br/0507944343674734
The growth of traffic in mobile networks demands a search for new technologies that can bring evolutions to the sector in question. Technologies such as heterogeneous networks (HetNets) and C-RAN (Centralized Radio Access Networks) appear as prominent solutions to this demand. However, without proper planning in the deployment of these networks, problems such as deployment cost, interference, energy efficiency and subsequent network management can lead to project unfeasibility. In this sense, this work investigates how to plan a heterogeneous network, through several heuristics in the implementation of HetNets, which will be explained later. These algorithms are evaluated in scenarios that illustrate real environments, in addition to analyzing several metrics to perform the appropriate performance evaluation of each approach. The planning of the use of centralized networks is also addressed, with a comparison with the Distributed Radio Access Network (D-RAN) model in order to show in which situations one is less costly than other. With the results, it is possible to perceive that the change in the size of the network (numbers of connected users) directly influences the results, as well as having a good indication of which technology to use in a given situation.
Acesso aberto (Open Access)
Uma análise técnico-econômica para implantação de arquiteturas centralizadas de redes de telefonia móveis
(Universidade Federal do Pará, 2018-03-06) SOUZA, Daniel da Silva; CARDOSO, Diego Lisboa; http://lattes.cnpq.br/0507944343674734
Upon the the challenges proposed by the fifth generation of mobile networks, the architecture of C-RAN (Centralized Radio Acess Network) has gained space by supporting high-capacity ultra-densas networks of next generation and offering economies. This dissertation proposes a TCO (Total Cost of Ownership) for C-RAN, CAPEX (Capital Expenditure), OPEX (Operational Expenditure) and these are the fundamental criteria in the field of investment assessment and projection. It is soon presented with a higher level of detailing as to the investment aspects, which are of great relevance to the architectural landscape of mobile communication networks. In this way, this work is conducted in order to evaluate the economic context of the implementation of a centralized architecture, based mainly on the financial aspects that service operators need to plan before deploying a new Mobile Access Network. The proposed model is used in a case study where the total cost of implementation and operation of the distributed and centralized architectures is compared taking into account several specific scenarios. The results point to an economy in the centralized scenarios and highlight the most relevant economic aspects in the planning of C-RAN.