| 摘要 |
This invention is generally concerned with the use of a mobile phone system to facilitate emergency search and rescue. In particular it is concerned with methods of using mobile phones to locate trapped or buried victims of natural or man-made disasters. In an embodiment of the method a mobile phone sends an alert request signal to an emergency alert controller which then broadcasts an emergency alert message to all the other mobile communications devices in the same cell or sector as the first, alert requesting phone. In response all these other mobile communications devices each output an emergency alert response such as a very loud audio tone or rf beacon signal. The invention facilitates location of victims of disasters without the need for specialised equipment. |
