Quality of Service Provisioning for Integrated Services in CDMA Networks: A Cell Model and Admission Control

In this work, we study the provisioning of Quality of Service for the third generation wireless CDMA networks, where users can demand multi-media services with diverse QoS requirements. By considering not only the link rate but also the link quality of unreliable wireless channels, we introduce a new concept called virtual bandwidth to characterize the resource consumption of user traffic. Based on virtual bandwidth, a cell-wise model is developed for the reverse link of CDMA by considering different QoS constraints across network layers, including the aggregation of user traffic, user-power limit, path loss, interference, and QoS specifications at the network layer. The admission of users with heterogeneous traffic and diverse QoS requirements can thus be investigated based on the model. We also evaluate the impact of traffic burstiness and transmission schemes using either one or multiple channels.