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International Journal of Digital Multimedia Broadcasting
Volume 2010 (2010), Article ID 597105, 13 pages
http://dx.doi.org/10.1155/2010/597105
Research Article

A Cross-Layer Location-Based Approach for Mobile-Controlled Connectivity

1Dipartimento per le Comunicazioni, I.S.C.T.I., Ministero dello Sviluppo Economico, Viale America 201, 00144 Rome, Italy
2Department of Applied Electronics, University of Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
3Department of Information Engineering, Electronics and Telecommunications (DIET), University of Rome “Sapienza”, Via Eudossiana 18, 00184 Rome, Italy

Received 2 July 2010; Revised 5 November 2010; Accepted 3 December 2010

Academic Editor: Stefania Colonnese

Copyright © 2010 T. Inzerilli et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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