Vertical Handoff Performance in Heterogeneous Networks

Authors:
Massimo Bernaschi;Filippo Cacace;Giulio Iannello
Affiliations:
"Mauro Picone" - C.N.R.;Università Campus Bio-Medico di Roma;Università Campus Bio-Medico di Roma and Università di Napoli Federico II
Venue:
ICPPW '04 Proceedings of the 2004 International Conference on Parallel Processing Workshops
Year:
2004

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Abstract

We study the problem of handoffs in heterogeneous (both wired and wireless) networks. We first present a testbed that integrates multiple network technologies (Ethernet LAN, WiFi and GPRS cellular data network) to provide seamless connectivity to mobile hosts. We then propose a model to analyze the performance of vertical handoffs as well as experimental measures to validate the model. Finally, we discuss the advantages of handoff detection and triggering through link layer mechanisms. An implementation of handoffsý link layer triggering is presented, and its performance is compared with layer-3 handoff triggering.