| 摘要 |
<p>The messaging system comprises a plurality of mobile communication terminals (3,4), a plurality of base stations (2) and at least one control station (1), which compose a mobile communication network. The base station (2) receives unique information sent periodically from mobile communication terminals, and detects the position of a particular mobile communication terminal (4) specified beforehand according to the received information. If the detected position of the particular mobile communication terminal (4) falls within a predetermined range, the base station informs a control station (1), which in turn sends a message to a predetermined communication terminal (3).</p> |
