| 摘要 |
<p>One or more predetermined wireless terminal apparatus 101 and 102 are registered as a group in advance with administrating station 108 connected to exchange network 104. A position information acquisition request is made from a position information acquiring terminal such as mobile phone apparatus 103 for a desired group. Administrating station 108 requests all wireless terminal apparatus 101 and 102 of the group corresponding to the request to send current position information. Wireless terminal apparatus 101 and 102, upon receiving the request, acquire their own current position information by way of acquiring electric waves from GPS satellites 109 and 110 and send the acquired current position information to administrating station 108. Administrating station 108 returns the received current position information to mobile phone apparatus 103, the source of the position information acquisition request. In accordance with this current position information, mobile phone apparatus 103 displays each terminal's current position. <IMAGE></p> |
