Técnicas de Provimento de QoS em Redes Móveis Celulares Baseadas em CAC e Reserva de Recursos na Origem e no Destino. (Techniques for providing QoS in Mobile Cellular Networks Based on CAC and Resource Reservation at the Origin and Destination)

Solange da Silva (solansilva@terra.com.br)1, Leonardo G. R. Guedes (leonardo.guedes@uol.com.br)1, Paulo Roberto Guardieiro (prguardieiro@ufu.br)2


1Departamento de Ciência da Computação - Universidade Católica de Goiás (UCG), Goiânia ‑ GO - Brazil
2Faculdade de Engenharia Elétrica - Universidade Federal de Uberlândia (UFU), Uberlândia - MG - Brazil

This paper appears in: Revista IEEE América Latina

Publication Date: Sept. 2006
Volume: 4,   Issue: 5 
ISSN: 1548-0992


Abstract:
Next generation mobile cellular networks will have to support multimedia services. These applications, however, are very different in relation to Quality of Service (QoS) requirements, imposing restrictive requirements for this type of environment because of its limited bandwidth. This work proposes alternative Call Admission Control (CAC) schemes combined with end-to-end bandwidth reservation. This work aims to attend the different multimedia services according to their different QOS requirements, as well as reducing the rate of call losses during the procedures of handoff, prioritizing users already using the network. Simulation results show that it is possible to guarantee satisfactory levels of handoff losses, maintaining the continuity of the calls and increasing user satisfaction.

Index Terms:
Quality of Service, Next Generation Mobile Cellular Networks, Multimedia Traffic Call Admission Control, Bandwidth Management, Handoff   


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