We investigate into the potentiality of an enhanced Power and Location-based Vertical Handover (PLB-VHO) approach, based\r\non a combination of physical parameters (i.e., location and power attenuation information), for mobile-controlled connectivity\r\nacrossUMTS and WLAN networks.We show that the location information in amultiparameter vertical handover can significantly\r\nenhance communication performance. In the presented approach a power attenuation map for the visited area is built and\r\nkept updated by exploiting the information sharing of power measurements with other cooperating mobile devices inside the\r\nvisited networks. Such information is then used for connectivity switching in handover decisions. The analytical model for the\r\nproposed technique is first presented and then compared with a traditional Power-Based approach and a simplified Location-Based\r\ntechnique. Simulation results showthe effectiveness of PLB-VHOapproach, in terms of (i) network performance optimization and\r\n(ii) limitation of unnecessary handovers (i.e., mitigation of ping-pong effect).
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