JPH01297920A - Mobile radio telephone position information service system - Google Patents

Abstract

PURPOSE:To inform the position of a mobile equipment by calling the specific mobile equipment for all call areas, selecting the reception sensitivity of answer signals by call areas where an answer is received in increasing order, and computing the present location of the specific mobile equipment. CONSTITUTION:When a general telephone subscriber 17 dials the special number for mobile radio telephone position information service so as to know the current position of the mobile equipment 20, the call reaches a mobile radio telephone exchange 3 through a general pay telephone network 2. The exchange 3 calls the mobile equipment 20 as to all call areas 6-10 through radio base stations 11-15, receives answers to the call, and selects the reception sensitivity of the answer signals by the called areas in increasing order, thereby computing and sending three signals to an arithmetic processing part 5. The determined present location of the mobile equipment 20 is sent to an audio response unit 16 through the exchange 3 and the received information on the present location is voiced to the subscriber 17 through sound.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mobile radio telephone location notification service system, and more particularly to a mobile radio telephone location notification service system that utilizes the location detection function of a mobile radio telephone system.

[Conventional technology]

In the conventional mobile radio telephone location notification service system, in a system in which mobile devices move nationwide and the mobile device registers the location by detecting a change in the service zone, the stored contents of the location registration are A location notification service is known that announces the area where a mobile device currently exists when the mobile device is not present in the area specified by the calling subscriber. Furthermore, in a normal mobile radio telephone system, when a connection is made to a mobile device, the current location of the mobile device is always detected, but the location information is not notified to the calling subscriber. It's not.

[Problem to be solved by the invention]

The conventional mobile radio telephone location notification service method described above is
In the case of a system where the mobile device registers its own location,
Furthermore, if a mobile device does not exist in the area specified by the calling subscriber, the area where the mobile device currently exists is announced, and it is not possible to proactively notify the calling subscriber of location information. It has not been done. Further, in ordinary mobile radio telephone systems, location information is not notified to the calling subscriber. Therefore, even if a subscriber wants to know the current location of a mobile device, there is a problem in that he or she cannot know it except in special cases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile radio telephone location notification service system that allows subscribers to know the current location of a mobile device whenever they want.

[Means to solve the problem]

The mobile radio telephone location notification service system of the present invention includes a control unit in a mobile radio telephone exchange equipment that analyzes the dial number of the calling subscriber and identifies that the request is for a location notification service for a specific mobile device; Based on the dial number, the specific mobile device is called to all the calling areas, and a response is received.The receiving sensitivity of the response signal for each calling area is selected in descending order of jx, and the difference in the receiving sensitivity is used to call the specific mobile device. This configuration includes an arithmetic processing unit that calculates and determines the location of the arithmetic processing unit, and a voice response device that responds by voice to the calling subscriber with the result determined by the arithmetic processing unit.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

The mobile radio telephone system 1 includes a mobile radio telephone switching device 3 connected to a general telephone public network 2, and a control unit that analyzes the dial number of the calling subscriber and identifies that the request is for a location notification service to the mobile device 20. 4, and an operation of selecting the reception sensitivities of the response signals for each paging area where the mobile device 20 was called and received the response, and calculating and determining the location of the called mobile device 20 from the difference in the reception sensitivities. Processing unit 5 and multiple call areas 6,7,8,9゜10
and wireless base stations 11 and 12 installed in each calling area.
．． 13, 14, and 15, and a voice response device 16 that responds to the calling subscriber by voice with the results determined by the arithmetic processing section 5. The general telephone public network 2 accommodates general telephone subscribers 17.

Next, the operation will be explained.

When the general telephone subscriber 17 dials a special number providing mobile radio telephone location notification service in order to know the current location of the mobile device 20, the call is routed via the general telephone public network 2 to the mobile radio telephone exchange. Reach 3. The mobile radio telephone switching device 3 sends the received dial number to the control unit 4, analyzes it, and identifies that it is a request for a location notification service to the mobile device 20. Next, the mobile radio telephone switching device 3
The mobile device 20 calls the wireless base station 1.1, 12.
．． 13, 14, and 15, the response is received, the reception sensitivity of the response signal for each paging area is selected in descending order, and the three signals are sent to the arithmetic processing unit 5. The arithmetic processing unit 5 is
The location of the mobile device 20 is calculated and determined from the three received signals.

The determined location is sent to the voice response device 16 via the mobile radio telephone exchange 3. The voice response device 16 converts the received location information into voice information, and responds to the general telephone subscriber 17 by voice indicating the location of the mobile device 20.

Next, a method for limiting the location of the mobile device 20 will be explained.

FIG. 2 is an illustration of position determination when response signals are received from three paging areas 7.9.10.

The reception sensitivity of the received response signal is determined by radio base station 1 in descending order of reception sensitivity.
Suppose it was 2,14.15. From this, the location of the mobile device 20 is determined to be the area 30 within the calling area 7. Although it is possible to calculate this position more accurately mathematically, this degree is sufficient for practical purposes.

〔Effect of the invention〕 As explained above, the present invention

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of position determination when response signals are received from three paging areas. ]...Mobile radio telephone system, 2...
General telephone public network, 3... Mobile radio telephone switching device, 4... Control unit, 5... Arithmetic processing unit,
6.7.8, 9.10... Calling area, 11
,12.13,14゜15... Wireless base station, 1
6...Voice response device, 17...General telephone subscriber, 20...Mobile device, 30...
Area within call area 7.

Claims (1)

[Claims] The mobile radio telephone switching equipment includes a control unit that analyzes the dialed number of the calling subscriber and identifies that the request is for a location notification service for a specific mobile device; an arithmetic processing unit that selects reception sensitivities of response signals for each paging area in which the mobile device called and received a response in descending order of the reception sensitivities, and calculates and determines the location of the specific mobile device from the difference in the reception sensitivities; A mobile radio telephone location notification service system comprising: a voice response device that responds to the calling subscriber by voice with the result determined by the arithmetic processing unit.