摘要 |
<p>In a digital PLMN network, the short message service of the network can be used for reporting a break-in into a vehicle and for monitoring the movements of the vehicle. An excitation signal arriving at the telephone, for example from a sensor at the driving wheel lock, causes the telephone to form and transmit a short message which includes the clock time, the identification data of a support station, the address of the short message terminal which is to receive the message, and possibly the identification data of the vehicle. The location of the vehicle can be determined from the support station identification data, which support stations transmit as system parameters.</p> |