Patent EA-000571-B1 (EA)
Title: System for displaying position of mobile terminal
Inventor: KOSHIMA HIROAKI
IPC: H04W4/90
Filed: 1996-07-25
Abstract: 1. A position display system of a mobile terminal (7) employing a small zone communication system, said small position display system comprising: a repeater (6) provided in each of a plurality of small zones, wherein said repeater (6) comprises information, identifying said repeater (6) for the mobile terminal (7) during communication with said mobile terminal (7), a mobile terminal (7) for communicating with said repeater (6), as a base station and a center control station (1, 91) for communication data with a mobile terminal (7), wherein said center station (1, 91) includes detection means (36) for detecting a position of said mobile terminal (7) according to information of the repeater identification. a mobile terminal (7) comprises monitor means (23) for monitoring electric field intensity of a repeater, and means (26, 27, 28) for transmitting to said center station (1, 91) the electric field intensity of the repeater (6) monitored by said monitor means (23), wherein said position detection means (36) identifies the position of said mobile terminal (7) according to said transmitted electric field intensity from the repeater and information for displaying a map of signal distribution according to the position of said repeater (6). 2. A position display system of a mobile terminal (7) of Claim 1, characterized in that monitor means (23) monitors electric field intensity of a plurality of said repeaters (6), said mobile terminal (7) transmits to said center station (1, 91) the electric field intensity of the plurality of repeaters (6) monitored by said monitor means (23), wherein said position detection means identifies the position of said mobile terminal (7) according to said transmitted electric field intensity from the plurality of repeaters (6) and information for displaying a signal distribution according to the position of the plurality of repeaters (6). 3. A position display system of a mobile terminal (7) of Claim 1, characterized in that communication between a mobile terminal (7) and a repeater (6) is provided via trunk lines and a monitoring channel, wherein electric field intensity of the repeater (6) is transmitted to the center station (1, 91) via said transmitting means using said monitoring channel. 4. A position display system of a mobile terminal (7) of Claim 1, characterized in that a call from the center station (1, 91) to said mobile terminal (7) is received so that a call ring bell is set mute at said mobile terminal (7), when the center station (1, 91) communicates with the mobile terminal (7). 5. A position display system of a mobile terminal (7) of Claim 1, characterized in that comprises emergency notify means(17), wherein an operation of said emergency notify means (17) is provided to said center station (1, 91) together with an identification number of said repeater (6) when said emergency notify means is operated. 6. The mobile terminal (7) according to Claim 1, comprising means for automatically disconnecting line connection with said center station (1, 91) after providing said identification number to said center station (1, 91) in response to a call from said center station (1, 91). 7. The mobile terminal (7) according to Claim 1, characterized in that said center station (1, 91) comprises means for calling a mobile terminal (7), wherein said calling means calls the mobile terminal (7) via said monitoring channel. 8. The mobile terminal(7) according to Claim 1, characterized in that said center station (1, 91) comprises storage means, wherein said position detection means (36) detects a position of said mobile terminal (7) for a plurality of times at different time points, and wherein results of said detected position of a plurality of times are stored in said storage means (70). 9. The mobile terminal (7) according to Claim 8, characterized in that said center station (1, 91) comprises a display means (61) for displaying the results of said detected position of a plurality of times on the display means (61) thus enabling to trace the mobile terminal (7). 10. The mobile terminal (7) according to Claim 1, characterized in that said position detection means comprises means for displaying a map (10) around the position of said mobile terminal (7), and means for displaying the position of said mobile terminal (7) on said map (10) at a predetermined configuration at said map. 11. The mobile terminal (7) according to Claim 1, characterized in that communication system in a small zone is a system of portable telephones. 12. The mobile terminal (7) according to Claim 1, characterized in that comprising: an antenna (16) for communicating with said repeater (6), means for detecting an identification number designating said repeater of communication (6), and means for providing said detected identification number to said center station. (1, 91). 13. The mobile terminal (7) according to Claim 12, characterized in that a call from the center station (1, 91) to said mobile terminal (7) is received so that a call ring bell is set mute at said mobile terminal, when the center station (1, 91) communicates with the mobile terminal (7). 14. The mobile terminal (7) according to Claim 12, characterized in that said mobile terminal (7) further comprises emergency notify means (17), wherein an operation of said emergency notify means is provided to said center station (1, 91) together with an identification number of said repeater (6) when said emergency notify means is operated. 15. The mobile terminal (7) according to Claim 12, characterized in that said mobile terminal (7) further comprises means for automatically disconnecting line connection with said center station after (1, 91) providing said identification number to said center station (1, 91) in response to a call from said center station (1, 91). 16. The mobile terminal (7) according to Claim 12, characterized in that said center station (1, 91) further comprises means for storing (70) a position of a mobile terminal (7) detected by said position detection means for a plurality of times at different time points, and wherein results of said detected position of a plurality of times are stored in said storage means (70), wherein said results of said detected position of a plurality of times on the display means thus enabling to trace the mobile terminal. 17. A position display system of a mobile terminal (7) employing a small zone communication system, said small position display system comprising: a repeater (6) provided in each of a plurality of small zones, wherein said repeater (6) comprises information, identifying said repeater (6) for the mobile terminal (7) during communication with said mobile terminal (7), a mobile terminal (7) for communicating with said repeater (6), as a base station and a center control station (1, 91) for communication data with a mobile terminal (7), wherein said center station (1, 91) includes detection means (36) for detecting a position of said mobile terminal (7) according to information of the repeater identification. a mobile terminal (7) comprises monitor means (23) for monitoring electric field intensity of a repeater, and means (26, 27, 28) for transmitting to said center station (1, 91) the electric field intensity of the repeater (6) monitored by said monitor means (23), wherein a call from the center station (1, 91) to said mobile terminal (7) is received so that a call ring bell is set mute at said mobile terminal, when the center station (1, 91) communicates with the mobile terminal (7). 18. A position display system of a mobile terminal (7) employing a small zone communication system, said small position display system comprising: a repeater (6) provided in each of a plurality of small zones, wherein said repeater (6) comprises information, identifying said repeater (6) for the mobile terminal (7) during communication with said mobile terminal (7), a mobile terminal (7) for communicating with said repeater (6), as a base station and a center control station (1, 91) for communication data with a mobile terminal (7), wherein said center station (1, 91) includes detection means (36) for detecting a position of said mobile terminal (7) according to information of the repeater identification. a mobile terminal (7) comprises monitor means (23) for monitoring electric field intensity of a repeater, and means (26, 27, 28) for transmitting to said center station (1, 91) the electric field intensity of the repeater (6) monitored by said monitor means (23), wherein a call from the center station (1, 91) to said mobile terminal (7) is received so that a call ring bell is set mute at said mobile terminal, when the center station (1, 91) communicates with the mobile terminal and means (68) for automatically disconnecting line connection with said center station (1, 91) after providing said identification number to said center station (1, 91) in response to a call from said center station.