Location registration system enabling a radio telephone set...

Details Location registration system enabling a radio telephone set... Location registration system enabling a radio telephone set...

H - Electricity

04

B

343/12, 325/30

H04B 1/48 (2006.01) G08C 21/00 (2006.01) H04B 7/15 (2006.01) H04B 7/204 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2038159

For starting a registration operation of location information of movable radio telephone sets into a subscriber's file in a line connection unit connected to radio connection devices in a mobile telephone network system after travel of each of the radio telephone sets, each radio telephone set is provided with a unit for measuring a travel amount. The radio telephone set produces a request signal for the location information registration when the travel amount measured exceeds a first threshold value. Alternatively, the radio telephone set reset the measuring unit when the travel amount measured exceeds a first threshold value and thereafter produces a request signal for the location information registration when the travel amount measured does not exceed a second threshold value smaller that the first threshold value. Radio connection devices announce location information signals and each radio telephone set holds, as a held location information, the location information registered in the subscriber's file. When the telephone set receives one of the location information signals which has location information different from the held location information, the radio telephone set produces another request for registration of the different location information.

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