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Unit 12: Space-based Wireless WANs

Following are the MBC Network Applications: Notes

FleetTrak Service

FleetTrak is a two-way messaging system for the transport sector, providing communication
between mobiles stations (in particular trucks) and a central office for vehicle dispatch and
tracking in support of fleet management systems (figure 12.5).

Figure 12.5: FleetTrak Application

Source: http://www.itu.int/ITU-D/fg7/case_library/documents/MBC001.html
A standard subscription to the FleetTrak service includes the exchange of messages between the
dispatch center and the vehicle and (automatic) position reports by the vehicle. The messages
may include free text and a large variety of status and control information, efficiently coded for
reliable transmission.

For the FleetTrak application, a radio modem is installed in a suitable place inside the truck
cabin. A GPS unit is connected to the radio modem, providing the position of the vehicle with
an accuracy of about 10 meters using the Global Positioning System (GPS). The GPS antenna can
be installed inside the truck cabin as well. The FleetTrak mobile antenna is mounted on the roof
of the vehicle.

A simple hand-held terminal can be connected, providing the driver with the means to input
status and text messages. Input connectors are provided for connection of other car systems (e.g.
engine and trailer system sensors, board computer) to the FleetTrak system, for status monitoring
and logging.

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