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Citation

Wac Katarzyna, Richard Bults, Aart van Halteren, Dimitri Konstantas, Victor Nicola, "Measurements-based performance evaluation of 3G wireless networks supporting m-health services", in Proc. Proc. 12th Multimedia Computing and Networking (MMCN '05) (San Jose, California, January 19-20, 2005), pp.

Abstract

The emergence of UMTS networks gives rise to new mobile services and applications in many different areas of our daily life. Examples of demanding mobile services are mobile-healthcare (i.e. m-health) services allowing the continuous monitoring of a patientís vital signs. However, a prerequisite for the successful deployment of m-health services is that the transport services offered by the underlying wireless network (UMTS) provide the appropriate performance characteristics. In this direction the EU MobiHealth project targeted the evaluation of UMTS networks and their ability to support demanding m-health services. The project developed and trialled a continuous vital signs monitoring system, evaluating at the same time the performance of UTMS networks. This paper presents selected performance evaluation results of the UMTS network collected during the MobiHealth project. We first describe the measurement methodology used, then present the speed related (i.e. delay) evaluation results followed by our conclusions and suggestions. All our measurements were done on an empty network, therefore providing reliable benchmark (best-case scenario) results. We present results collected on the delays perceived by the end-user. We have observed high delay variations, which have a major negative effect on the overall performance of the network. We attribute the observed delay variations to the inherent mechanisms of the different communication subsystems, ranging from the physical layer mechanisms (like delays due to UMTS bearer (re)assignment) all the way up to high-level protocol mechanisms (like delays due to TCP retransmissions). Based on the evaluation results our conclusion is, that in-spite of certain shortcomings of the existing UMTS networks, they are suitable for a significant set of m-health applications. A set of recommendations provides a road map for both operators and service developers for the design and deployment of m-health services.

Bibtex

@inproceeding{WaBu05,
Author = "Wac Katarzyna, Richard Bults, Aart van Halteren, Dimitri Konstantas, Victor Nicola",
Title = "Measurements-based performance evaluation of 3G wireless networks supporting m-health services",
Booktitle = "Proc. 12th Multimedia Computing and Networking (MMCN '05)",
Editor = "",
Publisher = "",
Pages = "",
Organization = "",
Address = "San Jose, California",
Key = "",
Notes = "",
Month = "January 19-20",
Year = "2005"
}
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