QoS-Based Performance and Resource Management in 3G Wireless Networks in Realistic Environments

The third generation networks like Universal Mobile Telecommunication Systems (UMTS) offers multimedia applications and services that meet end-to-end quality of service requirements. The load factor in the uplink is critical and it is one of the important parameters which has a direct impact on the resource management as well as on the cell performance. However, in this paper, the fractional load factor in the uplink and the total downlink power are derived taken into account the multi-path propagation in different environments. The analysis is based on changing new parameters that affect the Quality of Service (QoS) as well as the performance, such as: service activity factor, energy-to-noise ratio (Eb/N0), interference factor, and the non-orthogonality factor of the codes. The impact of these parameters on the performance and the capacity as well as the total throughput of the cell is also investigated. It is shown in this paper that in addition to the above parameters, the type of the environment has a major effect on the noise rise in the uplink as well as the total power in the downlink. The investigation is based on different types of services, i.e., voice (conversational: 12.2kbit/s), packet switched services with rates (streaming 64 and 128kbit/s) and (interactive 384kbit/s). Additionally, the obtained results in this paper are compared with some similar results in the literature.