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The evolution of mobile communications and the Internet has lead to the third generation of cellular networks, known as UMTS. In this evolution, new applications/services have been designed requiring QoS guarantees with respect to data transfer reliability, available bandwidth and delay/jitter bounds. The goal of this PhD is twofold. First we will build a testbed simulating the UTRAN of a UMTS network using a dozen of personal computers and open source softwares. The second step of our work will be to improve the best-effort network algorithms to adapt them to the wireless/narrow-band links (typically the air interface of the UTRAN), in order to fulfil the QoS requirements of upcoming applications and services.
Key words - UMTS, 3G, QoS, UTRAN, traffic model, simulation, testbed.