The impact of QoS differentiation on service quality and system capacity in cellular networks

Mobile network operators are currently preparing the introduction of QoS differentiation mechanisms in their 3G networks, as a means to support service-specific quality requirements, to enable the offering of distinct subscription forms and/or to enhance the resource efficiency and hence network capacity. In this paper we quantify the attainable...

Performance/capacity gains from QoS differentiation in HSDPA networks: An operator perspective

Mobile network operators are currently preparing the introduction of QoS differentiation mechanisms in their 3G networks, as a means to support service-specific quality requirements, to enable the offering of distinct subscription forms and/or to enhance the resource efficiency and hence network capacity. In this paper we quantify the attainable...

Potential of energy-oriented network optimisation: Switching off over-capacity in off-peak hours

Mobile communication networks are usually planned to provide some minimum service quality level during peak traffic hours. Consequently, in off-peak hours, when traffic loads are lower, the network is characterised by over-capacity, in the sense that same service quality targets can typically be satisfied with a reduced set of network resources,...

HSDPA flow level performance and the impact of terminal mobility

A flow level performance evaluation of data transfer in a UMTS/HSDPA network is presented with a principal focus on the performance impact of terminal mobility. Additional insights are provided regarding the comparison of packet schedulers. We demonstrate and intuitively explain that the flow level performance is non-monotonous in the terminal...

A flow level capacity comparison of UMTS and HSDPA

Using an operator perspective, we present a flow level capacity comparison of an HSDPA and a typically deployed release ‘99-based UMTS network, both in a qualitative and quantitative sense. The purpose of the qualitative reasoning is to generate a solid intuitive understanding of the HSDPA benefits. In the quantitative study, we resolve a number...

HSDPA flow level performance: The impact of key system and traffic aspects

We present a flow-level performance evaluation for a UMTS/HSDPA network. The results provide thorough insights into the performance impact of a number of key system, environment and traffic aspects, e.g. terminal location, the presence of intercellular interference, the intrinsic feedback delay in the channel quality indications, soft combining...