Design and Implementation of SIM Functionality for TETRA-system on a Smart Card
TETRA is an open radio standard developed by ETSI. It is specifically designed for use bygovernment agencies, emergency services such as police forces, fire departments, and ambulance,public safety networks, train radios, transport services, and the military. The TETRAstandard is used in the Swedish public safety net Rakel. Today the hand-held devices inRakel do not use a SIM card to hold the user identity. Instead, the terminal is personalisedby hard coding the user information in the terminal. As the users group grows a need forSIM cards will probably emerge since it simplifies the handling of the users for the networkadministrator, and allows the user to replace a broken terminal by simple moving his/herSIM card to another terminal. This master thesis examines the TSIM standard and extractsa specification of requirements, proposes a suitable software architecture, and partially implementsTSIM functionality on a smart card. The conclusion is that a TSIM applicationcan be integrated with an E2EE application but some modifications are needed compared toonly having the TSIM functionality in the smart card. The design and architecture describedin this master thesis can be used in systems that already use the SIM slot of the hand-helddevices for a smart card that extends the functionality of the terminal.
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