Enhanced Dedicated Channel Scheduling Optimization in WCDMA

Konferenz: European Wireless 2008 - 14th European Wireless Conference
22.06.2008 - 25.06.2008 in Prague, Czech Republic

Tagungsband: European Wireless 2008

Seiten: 5Sprache: EnglischTyp: PDF

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Skoutas, Dimitrios; Vouyioukas, Demosthenes; Rouskas, Angelos (Department of Information and Communication, Systems Engineering, University of the Aegean, Samos, GR-83200, GREECE)
Komnakos, Dimitrios (School of Electrical and Computer Engineering, National Technical University of Athens, Zographou, GR-15780, GREECE)

Enhanced Uplink operation of WCDMA-UMTS systems utilizes fast Node B scheduling and a short Transmission Time Interval (TTI) of 2ms. The scheduling decisions are based on scheduling information (SI) sent by each UE to the Node B. The main drawback of the current scheduling procedure is that the SI does not include any information regarding the delay sensitivity of each traffic flow, as well as the actual delay that the buffered data have experienced. In this paper, we propose the inclusion of such information in SI by introducing a modification of the respective 3GPP specifications. Furthermore, we propose a Dynamic Priority Scheduler (DPS), which can utilize this new information. The performance of the proposed scheme is evaluated by means of system level simulations.