Arizona State University
The rapid advancement of smartphones has instigated tremendous data applications for cell phones. Supporting simultaneous voice and data services in a cellular network is not only desirable but also becoming indispensable. However, if the voice and data are serviced through the same antenna (like the 3G UMTS network), a voice call with data sessions require better radio connection than a voice-only call. In this paper, the authors systematically study the coordination between the voice and data transmissions in UMTS networks. From analyzing a large carrier's UMTS network recording data; they first identify the most relevant network measurements/features indicating a potential call drop, then propose a drop-call predictor based on AdaBoost.