In this paper we propose a scheduling strategy at MAC level for the TDDflCDMA UMTS Third Generation air intelface. More precisely, we consider the uplink of a singlecell pedestrian outdoor scenario.Wthin this context we investigate the advantage of scheduling the direrent services that can be offered to the system, characterized by different quality and delay requirements, taking both the service priority and the channel state into account.The characteristics of the TDDflCDMA transmission system, the power control algorithm and a frequency selective fading channel are considered in our approach, which is semi-analytical and allows the evaluation of the statistics of the Frame Error Rate and the average transmitted power per &a unit, which is a measure of eflciency from the energy management point of view.The pelformunce of the scheduling algorithm we propose is compared to a more traditional scheduling approach which takes only the priority of services into account.
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