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Evaluating data transfer in HSDPA/W-CDMA nets

Posted: 01 Oct 2007 ?? ?Print Version ?Bookmark and Share

Keywords:HSDPA? W-CDMA? network simulator? mobile phone test?

Modern mobile devices are capable of transferring an increasing variety of data types that continue to grow in complexity. For example, mobile phones, once used only for transmitting/receiving voice data, are now capable of playing and sending music files, capturing and transmitting images, and even recording and sending video clips. Moreover, they can be used as wireless modems that connect PCs to the Internet. As the designs of these devices get more and more intricate, it becomes increasingly important that engineers test the performance of each aspect involved in the data transfer.

Designers of mobile devices typically test the efficiency of data transfers from baseband data analysis. A better scenario is to test the device in a real network environment. However, there are three issues involving mobile networks during test. First, the networkfor instance, a high-speed downlink packet access (HSDPA) network or W-CDMAmay not be available. Second, if the device is connected to a real network and a problem arises (e.g. a link disconnection or a slow down in throughput), it is very difficult to trace the actual cause in any of the subsystems.

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