Developing enhanced wireless Internet applications is becoming one of the upcoming challenges for mobile radio networks operators. In this paper we introduce and discuss the general software architecture of a wireless Internet-based application we have designed and implemented to support the distribution of Mp3-based musical songs to UMTS devices. We have examined the effects that Internet traffic has on the performance of wireless UMTS networks, due to the distribution of Mp3 files by means of our wireless application. The download time measurements we have experimentally obtained have shown that an appropriate structuring of the Internet-based wireless application may be very helpful to surmount the problems caused by the Internet standard protocols which were not especially designed for wireless environments.
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