JPH11215540A - Position registration method in mobile terminal system utilizing general public channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the position registration method by updating position information of a mobile in a database based on an informed position registration request, a telephone number of the mobile terminal and a telephone number of the section to attain position registration of the mobile terminal, even via a general public channel. SOLUTION: A mobile terminal 1 sends a position registration request with a telephone number of the mobile terminal 1, and a base station 3 informs a mobile terminal communication exchange 5 of the position registration request, a telephone number of the mobile terminal 1, and a telephone number of the base station 3 via a general public channel. The mobile terminal communication exchange 5 updates position information of the mobile terminal 1 in a database 7 based on the position registration request, the telephone number of the mobile terminal 1 and the telephone number of the base station 3 which are notified by the mobile terminal 1. Thus, even if the mobile terminal 1 moves to a dead area, the mobile terminal 1 can receive a call by the telephone number of the mobile terminal 1, by providing a small-sized base station 3 which connects to a general public channel to the dead area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for registering a location of a mobile terminal in a mobile terminal system (portable telephone system) using a general public line.

[0002]

2. Description of the Related Art There is known a portable telephone capable of making a call wirelessly using radio waves. FIG. 17 is a diagram for explaining a schematic configuration of the mobile phone system. The mobile phone system is roughly divided into a mobile phone 101 as a mobile terminal.
, Base station 102, exchange 103, database 1
04. Hereinafter, in this specification, a mobile terminal is simply referred to as a mobile terminal.
The base station 102 is a device that wirelessly controls the mobile phone 101 to enable communication, and the exchange 103 is a device that performs line switching for connecting a communication line between a caller side and a callee side and controls a base station. The database 104 is a device for storing subscriber data and is configured by a computer.

The mobile phone system is a system that divides a service providing range into several areas, and enables the mobile phone 101 to make and receive calls in any area. For this reason, it is necessary to register in the database 104 the position information indicating which area the mobile phone 101 is currently in (this is referred to as location registration). It is also necessary to check whether it is (this is called authentication).

FIGS. 18 to 20 are diagrams for explaining location registration and authentication of a conventional portable telephone system. FIG.
(A) shows the mobile phone 10 of Mr. Ko who stored the location information A.
FIG. 3 is a diagram illustrating a case where 1 moves from an area A to an area B. Here, since Mr. Ko's mobile phone 101 was in the area A before, the position memory 1 of Mr. Ko's mobile phone 101 is stored.
It is assumed that the area A is stored in the area 05 and the area A is registered in the database 104 as the position information of Mr. Ko's mobile phone. FIG. 18A shows a state in which Mr. Ko's mobile phone 101 has moved to the area B in this state. Area B base station 102 is always Area B
Is transmitted. Mobile phone 101 is in area B
Receiving the position information B.

FIG. 18B is a diagram for explaining a case where the mobile phone 101 that has received the position information B makes a position registration request. Mr. Ko's mobile phone 101 recognizes that he has moved to a different area because the position information stored in the position memory 105 is different from the currently received position information. The location memory 105 is rewritten with the content of the received area B, and a location registration request is transmitted to the base station. The location registration request is sent to the exchange 103 via the base station 102.

FIG. 19A is a diagram for explaining a case where an encryption key is received from the database 104 and authentication is performed between the exchange and the mobile phone. Mr. Ko's mobile phone 101
Is sent to the exchange 103, the exchange 103 stores in the database 104 the portable telephone 10 of Mr. Ko.
Request that one encryption key be sent. Database 1
04 sends the registered encryption key of Mr. Ko's mobile phone 101 to the exchange 103. The exchange 103 generates a random number and sends it to Mr. Ko's mobile phone 101 via the base station 102. Mr. Ko's mobile phone 101 performs a certain operation on the received random number and the encryption key stored in his own mobile phone, and sends the operation result to the exchange 103 via the base station 102. The exchange 103 has a database 1
The same calculation is performed using the encryption key of Mr. Ko's mobile phone 101 sent from Mr. 04 and the random number sent to Mr. Ko's mobile phone 101, and is compared with the calculation result sent from Mr. Ko's mobile phone 101. I do.

FIG. 19B is a diagram for explaining a case where the exchange notifies the mobile phone and the database of the reception of the location registration. In the exchange 103, when the comparison of the calculation results matches, it is determined that the location registration request has been authenticated.

FIG. 20A is a diagram showing a case where the position information of the portable telephone 101 of Mr. Ko on the database 104 is rewritten from A to B. The mobile phone 101 enters a standby state. FIG. 20B is a diagram showing a state where a call is made from a general public telephone line to Mr. Ko's mobile phone 101 registered to be in the area B, and a call is received.

In this way, the mobile telephone can freely make a call from an unspecified position in the service area. However, even in a service area, if a mobile phone is located at a position where radio waves from a base station cannot reach (a blind spot), such as a central part of a building or an underground shopping mall, a problem occurs in that communication becomes impossible. As a means for improving this problem, FIG.
Has been proposed (for example, refer to the Proceedings of the 1997 IEICE General Conference B-5-225 "Automatic Distributed Small Base Station Private System"). The PDC (Personal) shown in FIG.
A Digital Cellular private system is a combination of a PDC private system master unit 203 connected to a general public line switch 202 and a mobile phone 101 in a blind spot such as a building 201, and converts the mobile phone 101 into a slave unit of a general cordless telephone. It is a system used in this way. Mobile phone 1 in normal area
01 is used as a mobile phone, and is used like a cordless telephone handset in a blind place such as a building 201 and in a place where the PDC private system master unit 203 is provided. In this way, one mobile phone can be used effectively.

[0010]

However, the portable telephone circuit switch 103 as in the above-mentioned conventional example is connected to the general public circuit switch 202 of the PDC private system, and the database 104 is stored in the portable telephone circuit switch 103. In the case where the location registration is performed by connecting, there is a problem in that the location registration for enabling the incoming call cannot be performed in the above-described conventional method. That is, in the above-described conventional example in which location registration is possible, the exchange 103 and the base station 10
2 is connected by a dedicated line, the exchange 103
The area of the mobile phone 101 can be known by knowing from which base station the location registration request was issued. However, when a general public line is interposed between the exchange 103 and the base station 203, the mobile phone 101 Location cannot be registered to enable incoming calls. As a result, since the area A is still registered as position information in the database 104 of the mobile phone system, even if a call is made to the mobile phone number of the mobile phone 101 of Mr. Ko, the base station 102 in the area A does not A call signal is sent out, but the radio waves are from Mr. Ko's mobile phone 10.
No. 1 does not reach, and Mr. Ko's mobile phone 101 cannot receive a call.

It is an object of the present invention to provide a location registration method that enables location registration of a mobile terminal through a general public line in a mobile telephone system using a general public line.

[0012]

FIG. 1 shows an embodiment of the present invention.
The present invention will be described with reference to FIG. In order to achieve the above object, a location registration method in a mobile phone system according to claim 1 includes a mobile terminal 1 having a unique telephone number and a mobile terminal 1 connected to a general public line and having a unique telephone number within a predetermined area. A base station 3 for transmitting and receiving to and from the mobile terminal 1, a mobile terminal communication switching device 5 connected to the base station 3 via a general public line, and which of the divided areas each mobile terminal 1 is in. The present invention is applied to a location registration method in a mobile terminal system including a database 7 having location information. The mobile terminal 1 sends a location registration request together with the telephone number of the mobile terminal 1, and the base station 3 sends the location registration request and the mobile terminal 1 The telephone number and the telephone number of the base station are notified to the mobile terminal communication exchange 5 via the general public line, and the location registration request notified by the mobile terminal communication exchange 5 and the telephone number of the mobile terminal 1 are notified. Based on the telephone number of the base station 3, the database 7
In this case, the location information of the mobile terminal 1 is updated. According to a second aspect of the present invention, in the location registration method in the mobile phone system according to the first aspect, the mobile terminal 1 transmits a location registration request with the predetermined number when the predetermined number is dialed, and the base station 3 Generates a called number by adding a telephone number that can be specified by the mobile terminal communication exchange 5 to a predetermined number, and makes a call request to a general public line with the called number, thereby transmitting a location registration request to the mobile terminal communication exchange. 5 is notified. According to a third aspect of the present invention, in the location registration method in the mobile phone system according to the second aspect, the base station 3 transmits the location information of its own area, and the mobile terminal 1 receives the location information of the base station 3 to obtain a different area. When the base station 3 receives the automatic location registration request, the mobile station 1 completes the automatic location registration without notifying the mobile terminal communication exchange 5 of the location registration request. To notify
When the mobile terminal 1 receives the notification of the completion of the automatic location registration, the mobile terminal 1 updates its own location information storage area 8 to the location information of the area of the base station 3 and enters a standby state. According to a fourth aspect of the present invention, in the location registration method for a mobile phone system according to any one of the first to third aspects, when the mobile terminal communication exchange 5 is notified of a location registration request, the mobile terminal 1
To the mobile terminal 1, the mobile terminal 1 notifies the mobile terminal communication exchange 5 of the confirmation number, and the mobile terminal communication exchange 5 confirms the confirmation number and the mobile terminal 1 corresponding to the mobile terminal 1 owned by the mobile terminal 1. Compared with the confirmation number notified, when it is determined that the confirmation numbers match, it is determined that authentication has been obtained,
Based on the mobile telephone number of the mobile terminal 1 and the general telephone number of the base station 3, the position information of the mobile terminal 1 corresponding to the mobile telephone number in the database 7 is updated to the position information of the area of the base station 3 having the general telephone number. It is something to do. According to a fifth aspect of the present invention, in the location registration method for a mobile phone system according to the fourth aspect, the mobile terminal communication exchange 5 updates the location information in the database 7 and then notifies the base station 3 of the successful location registration. 3 receives the notification of the location registration success, and registers the mobile telephone number of the mobile terminal 1 in its own internal memory 9 (FIG. 2). Claim 6
The present invention provides a method for registering a location in a mobile phone system according to claim 4 or 5, wherein
Has a personal identification number corresponding to the mobile terminal 1, and the mobile terminal communication exchange 5 uses the mobile terminal 1 based on the mobile phone number.
Is obtained from the database 7, and the confirmation number is used as the password input by the user in the mobile terminal 1. The invention of claim 7 is
In the location registration method for a mobile phone system according to claim 4 or 5, the confirmation number is a mobile phone number input by a user in the mobile terminal 1. According to an eighth aspect of the present invention, in the position registration method in the mobile phone system according to any one of the first to seventh aspects, the general public line is an ISDN line. According to a ninth aspect of the present invention, in the location registration method in the mobile phone system according to the eighth aspect, the mobile phone number is
The mobile terminal communication exchange 5 is notified by the user / user information transfer function of the DN line. A location registration method in a mobile phone system according to claim 10, wherein the mobile terminal 1 has a unique telephone number and a base which is connected to a general public line and has a unique telephone number and transmits and receives the mobile terminal 1 within a predetermined area. An office 3, an exchange 4 for general public communication connected to the base station 3 via a general public line, an exchange 5 for mobile terminal communication connected to the exchange 4 for general public communication via a general public line, The mobile terminal 1 is applied to a location registration method in a mobile terminal system including a database 7 having location information on which of the divided areas the mobile terminal 1 is located in, and the mobile terminal 1 sends a location registration request to the telephone number of the mobile terminal 1. When the base station 3 is received by the general public exchange 4, the mobile station exchange 5
A position registration request signal set as a called number by adding a command signal for transmitting a signal as it is to the mobile terminal 1 set as information in the user / user information section, and a base set as a calling number The mobile terminal communication switch 5 is notified of the telephone number of the station 3 and the mobile terminal communication switch 5 via the general public communication switch 4.
The location information of the mobile terminal 1 in the database 7 corresponding to the telephone number of the base station 3 is updated based on the area information corresponding to the telephone number of the base station 3.

In the section of the means for solving the above-mentioned problems, the description is made in correspondence with the drawings of the embodiments for easy understanding, but the present invention is not limited to the embodiments.

[0014]

Since the present invention is configured as described above, it has the following effects. According to the first and tenth aspects of the present invention, the location registration request, the mobile telephone number of the mobile terminal, and the general telephone number of the base station are notified to the mobile terminal communication exchange via the general public line. Location registration is also possible from a base station connected to a public line. Thus, even if the mobile phone moves to a blind spot, by providing a small base station connected to a general public line in the blind spot, the mobile phone can receive a call using the mobile phone number. According to the invention of claim 2, since the location registration request is made by dialing a predetermined number from the mobile terminal, the location registration is performed only when the user truly desires the location registration. This is because location registration via a general public line requires the use of a general public line, so it is not necessary to automatically perform location registration; Only when necessary, minimizing costs. According to the invention of claim 3, the mobile terminal can make a call even if the actual location registration is not performed. According to the fourth aspect of the present invention, in the location registration using a general public line, an authentication process based on a predetermined standard cannot be performed, but an equivalent authentication process can be performed by an alternative method using a confirmation number. According to the invention of claim 5, since the mobile phone number whose location has been registered is registered in the internal memory of the base station, the base station determines whether or not the incoming number has been properly registered at the time of incoming call processing or the like. You will be able to confirm. According to the invention of claim 6, by using the confirmation number as the password input by the user, a secure confirmation process can be performed without changing the design of the current mobile phone. According to the seventh aspect of the present invention, the confirmation number can be used as the user's own mobile phone number to be input by the user, so that a simple confirmation process can be performed without changing the design of the current mobile phone. According to the invention of claim 8, since the ISDN line is used as the general public line, various control signals can be effectively used for a series of location registration processes. According to the ninth aspect of the present invention, the mobile phone number is notified to the mobile terminal communication exchange by the user / user information transfer function of the ISDN line, so that the mobile phone number can be notified easily and inexpensively. it can.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining an embodiment of a portable telephone system using a general public line.
This mobile phone system includes a mobile phone 1 of a user, a general public line connection type base station 3 provided inside a building 2 which is a blind spot in area A, a general public line switch 4, and a mobile telephone line switch. 5, a dedicated line connection type base station 6, and a database 7. Mobile phone 1, mobile phone line switch 5, dedicated line connection type base station 6, database 7
Is the mobile phone 1 of the prior art mobile phone system of FIG.
01, the exchange 103, the base station 102, and the database 104. The general public line switch 4 is provided by NTT (Nippon Telegraph and Telephone), and the mobile phone system uses the general public line. Therefore, the general public line connection type base station 3 has the general public line telephone number RRR-SSS-TTTT. This general public line is an ISDN line. The area Z is an area covered by the general public line connection type base station 3. The general public line connection type base station 3 has an output equivalent to that of a general cordless telephone that covers the inside of the building 2. FIG.
Indicates a state when Mr. Ko's mobile phone 1 storing the position information A has moved from the area A to the area Z.

FIG. 2 shows a portable telephone 1 receiving the position information Z.
Is a diagram showing a state in which requests for location registration are made. FIG.
FIG. 4 is a diagram showing a situation where a general public line connection type base station 3 notifies the mobile phone 1 of location registration.

-Location Registration-Hereinafter, the manner in which Mr. Ko's mobile phone 1 receives a location registration acceptance signal from the general public line connection type base station 3 will be described with reference to the flowcharts of FIGS. 1 to 3 and FIG. . The flowchart in FIG. 4 starts when Mr. Ko's mobile phone 1 moves from the area A to the area Z. The flowchart of FIG. 4 describes the processing inside the mobile phone 1 and the processing inside the general public line connection type base station 3 as one flow for the purpose of explaining the flow of the processing. The processing in the mobile phone is performed by a control circuit (not shown) including a microcomputer and peripheral circuits inside the mobile phone. The processing inside the general public line connection type base station 3 is performed by a control device (not shown) including a microcomputer and peripheral circuits inside the general public line connection type base station 3.
Is processed by In step S1, the mobile phone 1
Receives a radio wave from the general public line connection type base station 3.
As shown in FIG. 1, the general public line connection type base station 3 constantly transmits the position information of the area Z. In step S2, the mobile phone 1 determines the position information included in the radio wave, and the received position information (in this case, the area Z) is stored in its own position memory 8 (in this case, the area A (FIG. 1)). )) And recognizes the received position information of the area Z in the position memory (FIG. 2).

Recognizing that the location information is different means that the user has moved to a different area, and
Transmits a location registration request in step S3 (FIG. 2). In step S4, the general public line connection type base station 3 receives the location registration request from the mobile phone 1, and in step S5, the general public line connection type base station 3 transmits a position registration acceptance signal (FIG. 3). . The mobile phone 1 performs step S
In step S6, a position registration acceptance signal is received, and in step S7, a transition is made to a standby state. Here, the standby state refers to a state in which location registration with the mobile phone 1 has been completed and transmission is possible.

In the conventional location registration, as described above (FIGS. 18 to 20), when a location registration request is transmitted from the mobile phone 101, the mobile phone in the database 104 is transmitted via the base station 102 and the exchange 103. The position information of 101 has been updated through an authentication process. However, the general public line connection type base station 3 in the present embodiment does not actually perform the location registration even if the location registration request is made from the mobile phone 1. That is, Mr. Ko's mobile phone 1 on the database 7
Is not updated. Then, the general public line connection type base station 3 notifies the mobile phone of the reception of the location registration only as if the location registration had been completed. This is because, if the location is registered in the database 7 via the general public line connection type base station 3, since the general public line is used, the cost of using the general public line unintended by the user is generated. To do that. That is, only when Ko's mobile phone 1 moves to the area Z and truly desires an incoming call or the like in the area Z, the processing of the true location registration is performed and the cost is minimized. is there. Also, the notification of only the location registration reception as if the location registration has been completed to the mobile phone 1 is usually made by logic such that the mobile phone cannot make a call unless the mobile phone 1 recognizes that the location registration has been completed. Therefore, a call (calling) cannot be made unless a notification of location registration acceptance is received by the mobile phone to recognize that the location registration is completed. By making the call possible, the user can update the location registration on the database by dialing the special number.

Next, a description will be given of a process performed when a position registration is desired when Mr. Ko moves to the area Z. FIG.
FIG. 6 is a diagram showing how a location registration special number is dialed from the mobile phone 1, and FIG.
FIG. 7 is a diagram showing a state where authentication is performed between the mobile phone 1 and FIG. 7. FIG. 7 is a diagram showing a state where the location is registered on the database and the general public line connection type base station 3 also registers the mobile phone number of the mobile phone 1. is there. 8 to 10 are flowcharts illustrating the flow of the location registration process. The flowcharts of FIGS. 8 to 10 illustrate the processing of the mobile phone 1, the general public line connection type base station 3, the general public line exchange 4, and the mobile telephone line exchange 5 for the purpose of explaining the entire processing flow. Are connected. Hereinafter, the position registration process will be described with reference to FIGS.

The processing of the flowchart of FIG. 8 is continued from the state where the mobile phone 1 is in the standby state in step S7 of FIG. First, the mobile phone 1 dials a special number “xxx” for location registration. The location registration special number is a control number specially determined for location registration in the mobile phone system. In addition, mobile phone 1
, A special number “xxx” may be automatically dialed by the mobile phone 1 by pressing a position registration switch (not shown) provided in the mobile phone 1. In step S11, the mobile phone 1 sends the special number "xxx" and its own mobile phone number "0A0-CD".
A transmission request signal (IAM signal) including "-EFGHJ" is transmitted. In step S12, the general public line connection type base station 3
Receives the outgoing call request signal from the mobile phone 1 and proceeds to step S
At 13, the signal is analyzed, and the mobile phone number of the mobile phone 1 itself and the dialed number are temporarily stored in the internal memory. Here, it is not yet recognized that the dialed number is a special number. Since the protocol for transmitting and receiving a transmission request signal and the like between the mobile phone 1 and the general public line connection type base station 3 is a known content, its detailed description is omitted.

The flowchart of FIG. 9 is a continuation of FIG. In step S15 of FIG. 9, the general public line connection type base station 3 determines whether the dialed number is a location registration special number. If it is determined that it is a special number for position registration, the process proceeds to step S16, and preparations are made for making a call from the general public line connection type base station 3 using the general public line. Specifically, the prefix "0P0
-QRS- 'is added to generate a called number. The prefix “0P0-QRS-” is a telephone number for connection from a general public line to a specific mobile phone carrier, and the 9-digit number “0P0-QRS-xxx” with a special number added to the incoming call Set as a number. Also, the mobile phone number “0A0-CD-EFGHJ” of the mobile phone 1 is stored in the ISDN.
It is set in the user / user information section in the signal format of the control channel of the control channel and the communication channel in the line. The telephone number “RRR-SSS-TTTT” of the general public line connection type base station 3 is set as a calling number. As described above, the general public line connection type base station 3
Is the incoming number "0P0
-QRS-xxx, "the mobile phone number of the mobile phone 1 itself," 0A0-CD-EFGHJ ", and the transmission number" RRR-
SSS-TTTT "as a transmission request signal,
In step S18, a transmission request signal is transmitted to the ISDN line using a predetermined protocol. Since the protocol on the ISDN line has a known content, a detailed description is omitted.

On the other hand, if it is determined in step S15 that the dial number is not a special number, the flow advances to step S19 to determine whether the mobile phone is capable of making and receiving calls using the present system (whether the location registration has been completed in the database 7). ), It is determined whether or not the mobile phone number of the mobile phone 1 is registered in the mobile phone number data memory 9 of the general public line connection type base station 3. If it is determined that the information is registered in the memory 9, the process proceeds to step S20 and shifts to a transmission sequence. A series of these transmission processes will be described later. If it is determined in step S19 that the call is not registered in the memory, a call termination process is performed.

In step S18, when the general public line connection type base station 3 transmits a transmission request signal, the flow proceeds to step S21.
The general public line exchange 4 receives the call request signal,
In step S22, a call request signal is transmitted to the mobile telephone exchange 5 (FIG. 5). General public line switch 4 is NTT
Is an existing ISDN exchange. Therefore, the ISDN protocol between the general public line connection type base station 3, the general public line switch 4, and the mobile telephone switch 5 is an existing one. That is, the present invention devises and uses a part of the services of the existing ISDN line.

The portable telephone exchange 5 receives a call request signal from the general public line exchange 4 in step S23, analyzes the signal in step S24, and obtains the special number and the portable telephone 1
And the telephone number of the general public line connection type base station 3 are recognized. In step S25, the mobile telephone exchange 5 transmits a response signal indicating that the call is received. The response signal is received by the mobile phone 1 in step S30 through steps S26 to S29. Thereby, the mobile phone 1
And communication between the mobile telephone exchange 5 and the mobile telephone exchange 5 are established.

As described above, the portable telephone 1 and the portable telephone exchange 5
Is established, the location registration process is performed according to the guidance from the mobile telephone exchange 5. In step S31, the mobile telephone exchange 5 recognizes that the caller requests the location registration process from the incoming call number, enters the location registration process, and sends out an announcement prompting the input of the mobile phone number and the password. In step S33, a user of the mobile phone 1 transmits a push button signal of his / her own mobile phone number and personal identification number (push button operation). The announcement from the mobile phone exchange 5 and the push button signals of the mobile phone number and the password from the mobile phone 1 are I
It is transmitted on the control channel of the SDN line. Step S3
In step 4, the mobile telephone exchange 5 acquires the personal identification number of Mr. Ko's mobile telephone 1 registered in the database 7, and provides guidance from the mobile telephone 1 together with the mobile telephone number already sent by the user / user information transfer function. Compare with your mobile phone number and PIN number sent along. If the two information match, it is determined that the authentication has been obtained, and the process proceeds to step S35. In step S35, the location of Mr. Ko's mobile phone 1 is registered on the database 7. That is, as shown in FIG.
(The area where the general public line connection type base station 3 exists) is registered, and the telephone number RRR-SSS-TTTT of the general public line connection type base station 3 (the specific Area) is also registered. When the authentication is obtained and the location registration information of the mobile phone 1 of Mr. Ko in the database 7 is updated, the mobile phone exchange 5 transmits a location registration success signal using the control channel of the ISDN line in step S36. Specifically, a specific code indicating successful location registration is set in the user / user information part in the signal format of the control channel and transmitted. The location registration success signal is transmitted to the public telephone line switch 4 in step S3.
7, and is received by the general public line connection type base station 3 in step S39 through step S38. In step S40, the general public line connection type base station 3 registers Mr. Ko's mobile phone number "0A0-CD-EFGHJ" in the mobile phone number data in the memory 9, as shown in FIG. In step S41, the portable telephone exchange 5 notifies the portable telephone 1 of Mr. Ko of the location registration success even with the announcement. As described above, the location registration is completed, and the call termination processing is performed.

In the prior art, as described in the section of the prior art (FIG. 19, etc.), authentication processing is performed by a predetermined protocol using an encryption key. However, since this is a specific protocol on the premise that the mobile telephone exchange and the base station are connected by a dedicated line, in a system in which a general public line intervenes as in this embodiment, Authentication method cannot be used. In the present embodiment, it is assumed that a mobile phone equivalent to that used in the related art is used. Therefore, the above-described method using a password or the like is used. In the above scheme,
Although the mobile phone number is also a number for confirmation, it may be a password alone.

-Incoming Call Processing-Next, a description will be given of a situation where a call is made from a mobile phone in another area to the mobile phone 1 of Mr. Ko who has been registered as described above, and the mobile phone 1 of Mr. Ko receives a call. 11 and 12 are diagrams showing the contents. FIG. 11A shows the mobile phone number “0” of Mr. Ko from the mobile phone 10 of Otsu who is in the area A.
A0-CD-EFGHJ "is shown. In the database 7, it is registered that Mr. Ko's mobile phone 1 is in the area Z covered by the general public line connection type base station 3. It is shown that his mobile phone 1 is registered. In this state, the mobile phone number “0A0-CD-E” from Koto's mobile phone 10
When "FGHJ" is dialed, the call request signal reaches the mobile telephone exchange 5 by a known protocol. FIG.
As shown in (b), the mobile telephone exchange 5 requests and obtains the location information of Mr. Ko on the mobile phone 1 from the database 7.
The database 7 indicates that Mr. Ko's mobile phone 1 is in the area Z covered by the general public line connection type base station 3 having the general public line telephone number RRR-SSS-TTTT. Gets its contents.
As shown in FIG. 12A, the mobile telephone exchange 5 uses the telephone number RR of the general public line connection type base station 3 as the called number.
R-SSS-TTTT is set, and the mobile phone number “0” of Mr. Ko's mobile phone 1 is used as data in the user / user information section.
"A0-CD-EFGHJ" is set, the mobile phone number of Otsu is set as the transmission number, and the transmission request signal is transmitted to the general public line.

An outgoing call request from the mobile telephone exchange 5 reaches the general public line connection type base station 3 via the general public line exchange 4 according to a known protocol of the general public line.
FIG. 13 is a flowchart showing processing when the general public line connection type base station 3 receives a call request signal from the general public line. General public line connection type base station 3
In step S51, a call request signal is received from a general public line. In step S52, the mobile phone number of the called party is obtained from the user / user information of the calling request signal of the ISDN line. In step S53, it is determined whether or not the obtained mobile phone number of the called party is registered in the mobile phone number data in the memory 9. If it is determined in step S53 that the information has been registered, the process proceeds to step S54 to acquire the calling number. In step S55, it is determined whether the obtained calling number is a specific telephone number. The specific telephone number is a special number for deleting the mobile telephone number data in the memory 9 inside the general public line connection type base station 3 described later. If it is any other number, normal incoming call processing is performed in step S56. That is, the general public line connection type base station 3 transmits a call signal of the mobile phone 1 of Mr. Ko having the called number “0A0-CD-EFGHJ”. As shown in FIG. 12 (b), when Mr. Ko's mobile phone 1 responds, the response signal is a general public line connection type base station 3, a general public line (ISDN line), a general public line exchange 4, The information is transmitted to your mobile phone 10 via the telephone exchange 5 and the dedicated line connection type base station 6, and the communication is established.

By the above location registration and incoming call processing, even if the mobile phone 1 moves to a blind spot, by providing a small base station connected to a general public line in the blind spot,
The mobile phone can receive a call.

Next, a case will be described in which a call is made from Mr. Ko's mobile phone 1 in the area Z to another mobile phone or another general phone. FIG. 14 is a flowchart illustrating the flow of the processing. The flowchart of FIG. 14 also connects the processes of the mobile phone 1, the general public line connection type base station 3, the general public line switch 4, and the mobile phone line switch 5 for the purpose of explaining the entire processing flow. It has been described. In step S61, when the telephone number of the called party is dialed on Mr. Ko's mobile phone 1, a calling request signal is transmitted using a known protocol. In step S62, the general public line connection type base station 3 receives the transmission request signal. The outgoing call request signal includes the mobile phone number of the mobile phone 1 of Mr. Ko and the called party number. In step S63, the general public line connection type base station 3 analyzes the transmission request signal and recognizes the mobile telephone number and the destination number of the mobile telephone 1 which is the transmission request source. In step S64, the requesting mobile phone number is stored in the internal memory 9.
Check if it is registered in the mobile phone number data.
That is, it is confirmed whether or not the location in area Z has been normally registered. If the location has not been registered, the process ends.

If it is confirmed that the data is registered in the mobile phone number data in the memory 9, the process proceeds to step S65, where the IS
The mobile phone number of the mobile phone 1 is set in the user / user information portion of the call request signal to the DN line. Step S66
In this example, the prefix "0P0-QRS-" is added to the head of the destination number dialed by the mobile phone 1 and the ISD
Set to the destination number in the outgoing call request signal to the N line. This prefix is used to connect a telephone to a specific mobile phone carrier number, similarly to the location registration described above. After making the above preparations, the general public line connection type base station 3 transmits an outgoing request signal to the general public line (ISDN line) using a predetermined known protocol in step S67.

Step S in General Public Line Switch 4
68, via step S69, the prefix "0
A transmission request signal is transmitted to the mobile telephone exchange 5 specified by "P0-QRS-", and the mobile telephone exchange 5 receives the transmission request signal in step S70. The mobile telephone exchange 5 analyzes the signal in step S71, recognizes the mobile telephone number of the caller and the telephone number of the called party dialed by the caller, and shifts to a normal communication connection process in step S72.

In this way, even if a call is made from a mobile phone in the area of the general public line connection type base station 3 connected to the general public line via the general public line, the mobile telephone operator makes a call. By recognizing the original mobile phone number, it is possible to collect accurate charges for each mobile phone user and provide various services with a fine grain. Further, in the above-described embodiment, it is not necessary to dial a number for connecting to a specific mobile phone carrier required for making a call from a mobile phone via a general public line. Thus, a call can be made by the same operation as a normal mobile phone.

-Erase of Memory in General Public Line Connected Base Station- Next, a method of erasing data registered in the mobile phone number data in the internal memory 9 of the general public line connected base station will be described. 15 and 16 are diagrams for explaining the contents. FIG. 15A shows a state where Mr. Ko's mobile phone 1 has moved from area Z to area A. Area Z is an area covered by the above-described general public line connection type base station 3, and area A is an area covered by the dedicated line connection type base station 6. Ko's mobile phone 1 is in area A
, And recognizes that it is different from the stored position information of the area Z, and requests the rewriting position registration of the contents of its own position memory 8 to the position information of the area A.

As shown in FIG. 15 (b), the mobile telephone line exchange 5 changes the location information of Mr. Kou's mobile phone 1 in the database 7 to the area A through a predetermined authentication process, and performs normal location registration. finish. The predetermined authentication process here is
This is an authentication process using a known encryption key described in the related art. At this time, the telephone number “RRR-SSS-TTTT” of the general public line connection type base station 3 and the inside of the general public line connection type base station 3 stored in the location information of the mobile phone 1 of Mr. Ko in the database 7. Mr. Ko's mobile phone number in memory 9 has not yet been erased.

Next, the portable telephone exchange 5 is shown in FIG.
As shown in (1), a signal for erasing Mr. Ko's mobile phone number in the internal memory 9 of the general public line connection type base station 3 is transmitted. The outgoing call request signal includes the number “RRR-SSS-TTTT” of the general public line connection type base station 3 as the receiving number.
Is set, a mobile phone number “0A0-CD-EFGHJ” to be deleted is set in the user / user information section, and a specific phone number “0P0-
“QR-STUVW” is set. The general public line connection type base station 3 performs the processing in FIG. 13 upon receiving the call request signal, and performs memory erasure processing in step S58 when recognizing in step S55 that the number is a specific number for memory erasure. In step S58, as shown in FIG. 16B, the mobile phone number corresponding to the mobile phone number acquired from the user / user information section is deleted from the mobile phone number data in the internal memory 9. On the other hand, after transmitting the memory erasing signal, the mobile telephone exchange 5 requests the database 7 to delete the telephone number of the general public line connection type base station 3 remaining in the location information of the mobile phone 1 of Mr. Ko. I do.

In this embodiment, the basic protocol for exchanging signals between the devices is based on the following standards. The protocol of the interface between the base station and the mobile telephone exchange is based on a unique standard formulated by a mobile telephone operator, but this is also a known content. (1) Mobile phone-base station interface RCR STD-27F 1st to 3rd volume "Digital mobile phone system standard" (2) Mobile phone exchange-database interface TTC standard volume 3 volume 4 (1st edition) ) "Inter-network interface Inter-network signal system (mobile communication related) 1993" (3) Interface between general public switched line and mobile telephone exchange TTC Standard Vol. 3, Volume 2, Vol. Inter-network signaling (ISDN inter-network signaling)
1994 "(4) General public line connection type base station-general public line exchange interface TTC standard volume 2 first volume part 1-6 (13th edition)" User / network interface ISDN user / network interface 1994 "

In the above embodiment, an ISDN line is assumed as a general public line. However, the concept of the present invention can be applied to the case where an analog line is used. However, in this case, it is necessary to establish a call and then exchange data such as a mobile phone number via the call channel.

In the above embodiment, the mobile phone number in the mobile phone number data in the internal memory 9 of the general public line connection type base station 3 is erased in accordance with the update of the location registration. May be deleted by a simple method such as For example, the date and time or time at which the mobile phone number data in the memory 9 is erased in the general public line connection type base station 3 may be set in advance, and all mobile phone numbers may be erased at that time. Although the capacity of the mobile phone number data is limited, if the mobile phone number is registered to exceed the capacity, the oldest one may be overwritten. This is particularly effective in the case of the analog line described above.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of a mobile phone system using a general public line.

FIG. 2 is a diagram showing a state in which the mobile phone 1 that has received position information Z requests position registration.

FIG. 3 is a diagram showing a state in which a general public line connection type base station 3 notifies a mobile phone 1 of a location registration acceptance.

FIG. 4 is a flowchart showing a flow of processing in which the mobile phone 1 receives a location registration acceptance signal from the general public line connection type base station 3.

FIG. 5 is a diagram showing a state where a location registration special number is dialed from the mobile phone 1;

FIG. 6 is a diagram showing how authentication is performed between the mobile phone 1 and the mobile phone line switch 5;

FIG. 7 is a diagram showing a state in which location registration is performed on a database and the general public line connection type base station 3 also registers the mobile phone number of the mobile phone 1;

FIG. 8 is a flowchart illustrating the flow of a location registration process.

FIG. 9 is a flowchart illustrating the flow of a location registration process following FIG. 8;

FIG. 10 is a flowchart illustrating the flow of a location registration process following FIG. 9;

FIG. 11 is a diagram illustrating a state where a call is made to the mobile phone 1 from a mobile phone in another area, and the mobile phone 1 receives a call.

FIG. 12 is a diagram illustrating a state where a call is made to the mobile phone 1 from a mobile phone in another area, and the mobile phone 1 receives a call.

FIG. 13 is a flowchart showing processing when the general public line connection type base station 3 receives a call request signal from a general public line.

FIG. 14 is a flowchart illustrating a flow of processing when a call is made from the mobile phone 1 in the area Z to another mobile phone or another general phone.

FIG. 15 is a view for explaining a method of erasing data registered in the mobile phone number data in the internal memory 9 of the general public line connection type base station.

FIG. 16 is a view for explaining a method of erasing data registered in mobile phone number data in an internal memory 9 of a general public line connection type base station.

FIG. 17 is a diagram illustrating a schematic configuration of a conventional mobile phone system.

FIG. 18 is a view for explaining location registration and authentication of a conventional mobile phone system.

FIG. 19 is a view for explaining location registration and authentication of a conventional mobile phone system.

FIG. 20 is a view for explaining location registration and authentication of a conventional mobile phone system.

FIG. 21 is a view for explaining a conventional PDC private system.

[Explanation of symbols]

 1, 10, 101 Mobile phone 2 Building 3 General public line connection base station 4 General public line switch 5 Cellular phone line switch 6 Dedicated line connection base station 7, 104 Database 8 Location memory 9 Memory 102 Base station 103 Switch

Claims (10)

[Claims] A mobile terminal having a unique telephone number, a base station connected to a general public line and having a unique telephone number and transmitting / receiving to / from the mobile terminal within a predetermined area, and a general public line A location registration method in a mobile terminal system comprising: a mobile terminal communication exchange connected to the base station; and a database having location information on which of the divided areas each mobile terminal is located in, Sends a location registration request together with the telephone number of the mobile terminal, and the base station transmits the location registration request, the telephone number of the mobile terminal and the telephone number of the base station via the general public line. Notify the mobile terminal communication exchange, the mobile terminal communication exchange, based on the notified location registration request, the mobile terminal telephone number and the base station telephone number, Serial location registration method in a mobile terminal system a public telephone using, characterized in that it has to update the location information of the mobile terminal database. 2. The location registration method in a mobile terminal system according to claim 1, wherein said mobile terminal transmits said location registration request with a predetermined number by dialing a predetermined number, and The location registration request is generated by adding a telephone number that can be identified by the mobile terminal communication exchange to the predetermined number to generate a called number, and making a call request to the general public line with the called number. A method for registering a location in a mobile terminal system, comprising notifying the mobile terminal communication exchange. 3. The location registration method in a mobile terminal system according to claim 2, wherein the base station transmits location information of its own area, and the mobile terminal receives the location information of the base station and moves to a different area. When recognizing that the mobile terminal has moved, the base station transmits an automatic location registration request.When receiving the automatic location registration request, the base station automatically notifies the mobile terminal without notifying the mobile terminal communication exchange of the location registration request. Notify the location registration completion, the mobile terminal, when receiving the notification of the automatic location registration completion, updates its own location information storage area to the location information of the area of the base station, and enters a standby state, Registration method in a mobile terminal system. 4. The location registering method in a mobile terminal system according to claim 1, wherein said mobile terminal communication exchange, when notified of said location registration request, notifies said mobile terminal of a confirmation number. The mobile terminal notifies the mobile terminal communication exchange of the confirmation number, and the mobile terminal communication exchange is notified by the mobile terminal of a confirmation number corresponding to the mobile terminal owned by the mobile terminal. The mobile phone of the database is compared with the mobile phone number of the database based on the mobile phone number of the mobile terminal and the general telephone number of the base station when the mobile phone is authenticated. Updating the location information of the mobile terminal corresponding to the number to the location information of the area of the base station having the general telephone number. Method. 5. The location registration method in a mobile terminal system according to claim 4, wherein the mobile terminal communication exchange updates the location information in the database and notifies the base station of the success of the location registration. Receiving the notification of the location registration success, registering the mobile phone number of the mobile terminal in its own internal memory. 6. The location registration method in a mobile terminal system according to claim 4, wherein the database further has a password corresponding to the mobile terminal, and the mobile terminal communication switchboard includes the mobile telephone number. Acquiring a personal identification number corresponding to the mobile terminal from the database based on the above, wherein the confirmation number is the personal identification number input by a user at the mobile terminal, and a location registration method in the mobile terminal system. . 7. The location registration method in a mobile terminal system according to claim 4, wherein the confirmation number is the mobile phone number input by a user at the mobile terminal. Location registration method in the system. 8. A location registration method in a mobile terminal system according to claim 1, wherein said general public line is an ISDN line. 9. A location registration method in a mobile terminal system according to claim 8, wherein the mobile telephone number is notified to the mobile terminal communication exchange by an ISDN line user / user information transfer function. Location registration method in the system. 10. A mobile terminal having a unique telephone number, a base station connected to a general public line and having a unique telephone number and transmitting / receiving to / from the mobile terminal within a predetermined area, and a general public line. A general public communication exchange connected to the base station, a mobile terminal communication exchange connected to the general public exchange via a general public line, and an area in which each mobile terminal is divided into a plurality of areas And a database having location information on the location of the mobile terminal, wherein the mobile terminal sends a location registration request together with the telephone number of the mobile terminal, and the base station is a general public exchange. Upon receipt, a command signal for transmitting the signal as it is to the mobile terminal communication exchange is added, and the location registration request signal set as the called number and user / user information The telephone number of the mobile terminal set as the information of the section, and the telephone number of the base station set as the calling number, notify the mobile terminal communication exchange via the general public exchange, The mobile terminal communication switching system is characterized in that location information of the mobile terminal in the database corresponding to a telephone number of the mobile terminal is updated based on area information corresponding to a telephone number of the base station. A location registration method in a mobile terminal system using a general public line.