A TeliaSonera Operator EMT Completed Trials of A-GPS SIM Card In Estonia

SIM-based Assisted GPS works

EMT, the Estonian division of TeliaSonera Group, announced that the carrier successfully completed field trials of Assisted GPS (A-GPS) enhanced  SIM cards. Embedded A-GPS technology allows location based services (LBS) to be deployed with old and ordinary 2G models of cellular phones, too.  A-GPS improves the performance of a GPS-based positioning system for mobile devices. Solution developed by a Luxembourg startup, BlueSky Positioning, includes embedding of  a micro GPS antenna and related software applications directly into a SIM card. That allows even 2G phones to support LBS.

USSD technology improves  A-GPS application

The solution was tested using both GPRS and USSD (Unstructured Supplementary Services Data) for processing  data in a live 3G mobile network. EMT Estonia is the first carrier to test USSD, a technology that brings numerous benefits for the customer. i.e. the ability to be used simultaneously with a call, which may be extremely important in case of emergency calls.