Propostas de esquemas baseados em CAC e reserva de recursos para a provisão de QoS em redes móveis celulares com suporte ao tráfego multimídia

• Ano de defesa: 2005
• Autor(a) principal: Silva, Solange da
• Orientador(a): Guardieiro, Paulo Roberto
• Banca de defesa: Barbar, Jamil Salem , Anzaloni, Alessandro , Carrijo, Gilberto Arantes
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia
• Programa de Pós-Graduação: Programa de Pós-graduação em Engenharia Elétrica
• Departamento: Engenharias
• País: BR
• Palavras-chave em Português: Redes móveis celulares com suporte ao tráfego multimídia; Reserva de recursos; Qualidade de serviço (QoS); Gerenciamento de handoff; CAC; Telefonia celular; Sistemas de comunicação móvel
• Palavras-chave em Inglês: Cellular mobile networks with support to multimedia traffic; Quality of service (QoS); Handoff management
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: https://repositorio.ufu.br/handle/123456789/14369

The next generation of high-speed mobile/wireless networks will support multimedia applications. The support of such applications imposes Quality of Service (QoS) requirements that have been considered very restrictive in this network environment due to the difficulty of managing the scarce bandwidth, the droppings because of handoff and blocking calls. Thus, in this work, we propose alternative schemes of CAC (Call Admission Control) combined with adaptive bandwidth reservation schemes of adjacent cells, in an end-to-end approach. The results obtained from performance studies based on modeling and simulation, demonstrated that the proposed schemes called Directed Reserve (RDir) and Total Reserve (RT), have presented the lowest CDP (Call Dropping Probability), when compared with similar schemes described in the literature. Thus, these schemes are capable to promote the maintenance of the accepted calls within the network and improve the quality of service of the cellular mobile networks with support to multimedia traffic