DiffServ RED Evaluation with QoS Management for 3G Internet Applications

Abstract

With the increasing commercial deployment of wireless networks, the issue of providing multiple services is becoming more and more important. So the concept of “Quality of Service (QoS)” is being widely discussed and implemented. In the 3G architecture, the UMTS has defined 4 kinds of service types to provide the appropriate QoS type for different requirements and different applications. Similarly, in order to provide QoS in the traditional IP network, we assume 3G networks will adopt DiffServ as the IP-backbone. In this paper, we proposed an efficient mapping from 3G services to DiffeServ PHB aggregates. We used queueing theory to estimate the delay and loss for different traffic types. By using the estimation, we proposed a homogeneous QoS mapping policy to achieve QoS requirements under efficient resource utilizations through the 2 different services. An Admission Policy with QoS mapping is suggested to assure QoS by compromising with little throughput degradation. Besides, we also propose the adaptation policy. This adaptation policy could dynamically adapt the RED queue based on the arrival traffic types. Thus, we perform the QoS management through the RED evaluations. The QoS management includes the mapping and adaptation. For further development, we may also use these models to estimate and propose other mapping policies such as profit based mapping.