PORTABLE RADIO TELEPHONEY SET AND ITS SYSTEM

摘要

PURPOSE:To display information relating to a current location and an object on a map with a portable radio telephoney set by allowing a reception base station receiving a radio wave to specify the transmission position of the portable radio telephone set and sending map information including the transmission position to a caller in a radio wave. CONSTITUTION:When a receiver inquires of this system about a transmission position at a point A by a portable radio telephoney set, a mobile communication controller MSC selects an on-ground reception base station having a strongest reception radio wave among on-ground reception base station groups CS1-CS5, retrieves local map information including the on-ground reception base station CS2 in huge map information of a map information film LR relating to the on-ground reception base station CS2 and position or reception enable area information of the on-ground reception base station CS2 to a portable radio telephoney set of the caller via the on-ground reception base station CS2 together with the local map information in a radio wave. The caller receives a radio wave from the on-ground reception base station CS2 by a portable radio telephoney set PS and the local map and the position or reception enable area of the on-ground reception base station CS2 on a picture display element D.