| 摘要 |
PURPOSE:To easily recognize map information in the neighborhood of an area where a mobile machine in an automobile telephone network is located by itself by providing a map information delivery means to deliver the map information in the neighborhood of a zone in which the mobile machine exists replying to the reception of a map information request signal at a fixed station side device. CONSTITUTION:When the user of the mobile machine 3 desires to receive the offer of the map information in the neighborhood of the area where the mobile machine exists, a map information connection request signal is transmitted to a base station 2 side via the control channel of a radio line. The map information connection request signal is sent to a control station 1 via the base station 2 of the zone where the mobile machine 3 exists. A map information data device 25 selects the map information in the neighborhood of the base station of the zone where the mobile machine 3 exists under the control of a speech controller 14, and inserts it to an allocated speech channel, and delivers it from the base station 2 to the mobile machine 3 via the speech channel. The mobile machine 3, when receiving the map information via the speech channel, displays it on the screen of a display device as a road map.
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