JPH0442877B2 - - Google Patents

Description

[Detailed Description of the Invention] [Table of Contents] Overview Industrial Application Fields Prior Art (Figures 5 to 8) Problems to be Solved by the Invention Means for Solving the Problems (Figure 1) Construction Embodiments (Figures 2 to 4) Effects of the invention [Summary] In a mobile communication system, when a subscriber moves on board another moving body such as a ship, the management file of the subscriber is Data about the moving object being boarded is entered, and position information based on the movement of the moving object is managed for the moving object.

[Industrial application field]

The present invention relates to a method for managing location information in mobile communications, and in particular, to a communication system that enables communication associated with individuals, and in particular, management of location information when multiple subscribers board a mobile body and move. Regarding the method.

[Conventional technology]

For example, in a location information management system such as a mobile communication system such as a mobile terminal such as a car phone or a telephone carried by an individual, each subscriber is stored in a database that corresponds exclusively to the area where the user is located, called the home area. Location information is managed by

Now, as shown in FIG. 5, subscriber c whose home area is area C and subscriber d whose home area is area D are both connected to the same mobile body b such as a ferry whose home area is area B. When subscribers are on board, their respective location information is managed in the home area database, so when subscribers c and d board mobile unit b in area B, each Enter B as position information in the respective databases of home areas C and D.

When mobile object b moves from area B and locates in area A, it is necessary to change the information in each of the databases from position B to position A, as shown in FIGS. 5 and 6.

A conventional network is configured as shown in FIG. 7, for example. In Figure 7, 2
0, 21, 22 are relay exchanges, 23, 24, 25
are subscriber exchanges, 26, 27, 28, and 29 are wireless base stations, 30 is a mobile unit such as a ferry, 31 is a database storing data management information of subscriber c, and 32 is data management of subscriber d. A database that stores information.

When subscriber c boards a mobile body 30 such as a ferry, the mobile body 30 informs the wireless base station 27 and the subscriber exchange 2 that it is located in area B.
3. The information is transmitted to the local exchange 24 via the relay exchanges 20 and 21, and the fact that subscriber c is located in area B is entered in the database 31 of the local exchange 24. Similarly, when subscriber d, whose home area is area D, boards the same mobile object 30, the fact that subscriber d is located in area B is entered in the database 32.

When the mobile unit 30 moves from area B to area A, as shown in FIG. 8, the mobile terminal receives an area code (in this example, B ) and compares it with the previously received area code.
At this time, the mobile terminal receives the area code PL.
The previously received area code LL is checked (exclusive OR), and if it matches, the area code remains as is. However, when the mobile unit 30 moves and enters area A from area B, the mobile terminal strongly receives the area code (A in this example) transmitted from the wireless base station 26 and receives the area code transmitted from the wireless base station 27. Since the area code does not match the transmitted area code, "1" is output.

As a result, the mobile terminal outputs a location registration request to the mobile object 30, and when an acceptance signal is returned from the mobile object 30, the user confirmation number (ID number),
A telephone number c' unique to this mobile terminal is transmitted to the mobile body 30.

The mobile body 30 similarly outputs a location registration request to the radio base station 26, and when the radio base station 26 returns an acceptance signal, it sends out the ID number and telephone number c'. The radio base station 26 receives these and sends the location registration request, ID number, and telephone number c' to the subscriber exchange 24 via the subscriber exchange 23 and the relay exchanges 20 and 21.

The subscriber exchange 24 identifies the home area C of the subscriber c by the telephone number c', determines the mobile terminal accommodation terminal number from the telephone number c', and also receives new location information tN of the mobile unit 30 from the radio base station 26. Detect. Then, the subscriber exchange 24 in the home area of subscriber c updates the old location information tO of subscriber c in its database 31 to new location information tN.

When a completion notification indicating that this location information has been updated is transmitted from the database 31 to the subscriber exchange 24, this completion notification is sent in the following order: subscriber exchange 24→radio base station 26→mobile unit 30→ The information is transmitted to the mobile terminal, and the location information registration settings are completed.

Note that when another subscriber d is on board the mobile unit 30, based on the movement of the area of the mobile unit 30,
Update of location information in the database of subscriber d is performed in the same manner.

[Problem that the invention seeks to solve]

In this way, in conventional location information management, location information is managed on a database for each subscriber, which corresponds exclusively to the area called the home area, where the subscriber is present most of the time. Therefore, when multiple subscribers are mounted on a mobile object, it is necessary to update the location information for each subscriber, and it is necessary to update the location information for each subscriber. In such a case, location information will be exchanged between the subscriber exchange managed at the mobile unit's destination and the home area database corresponding to each subscriber, reducing the efficiency of the data link.

Furthermore, regarding the setting of communication channels, since information is managed on a subscriber-by-subscriber basis, it is not possible to manage them as a group even though the channels are the same, resulting in an increase in the amount of control.

Therefore, it is an object of the present invention to update the database of each subscriber every time there is a change in the area of the mobile unit when a plurality of subscribers are installed in the mobile unit. It is an object of the present invention to provide a group tracking method that eliminates the need to enter information.

[Means for solving problems]

In order to achieve the above object, in the present invention, as shown in FIG. 1, in addition to the database for management of subscribers c and d, a database for management of mobile unit b is provided. Data on mobile unit b is entered in the databases of subscribers c and d, respectively, as position information of subscribers c and d. Then, the location information of mobile body b is entered in the management database of mobile body b.

[Effect]

When mobile body b moves from area B to area A, the change from B to A is entered in the database of mobile body b as position information of mobile body b.
Therefore, when obtaining the location information of subscriber c, it is possible to find the storage location of the database of mobile unit b from the database of subscriber c, read it, know the position of the mobile unit, and call subscriber c. . In this way, even if the area of mobile unit b changes, it is only necessary to update the location information of mobile unit b, and there is no need to update the data files of each of the many subscribers installed in mobile unit b. do not have.

〔Example〕

An embodiment of the present invention will be described based on FIGS. 2 to 4.

Fig. 2 is a network configuration diagram showing an embodiment of the present invention, Fig. 3 is a control sequence at the time of initial registration when a subscriber boards a mobile body in the present invention, and Fig. 4 is a network configuration diagram showing an embodiment of the present invention. This is a control sequence when updating body position information.

In Fig. 2, 1, 2, 3 are relay exchanges,
Reference numerals 4, 5, and 6 refer to subscriber exchanges; 7, a database for managing data of subscriber c; 8, a database for managing data for subscriber d; 9, a database for managing data for mobile unit b; 14; is an area code comparison unit provided in mobile body b, 15
The mobile file 16 is a wireless base station for wireless service area (hereinafter referred to as area) A, 1
7 is a radio base station for area B, 18 is a radio base station for area C, and 19 is a radio base station for area D.

Note that subscriber c has area C as his home area, and therefore his database 7 is read or written by the subscriber exchange 4 to which the radio base station 18 of area C is connected. Similarly subscriber d
has Area D as its home area, and its database 8 is read or written by subscriber exchange 5, and mobile body b has area B as its home area, and its database 9 is read or written by subscriber exchange 6.

As shown in FIGS. 2 and 3, an internal file 15 is also provided inside the moving body b.
This in-mobile file 15 has the ID numbers and telephone numbers c', d', etc. of the mobile terminals of subscribers c, d... on board the moving object, and these can be accessed using the key. The accommodation terminal numbers tp of subscribers c, d, . . . in mobile body b are known.

Next, the control sequence in the present invention will be explained.

(1) At the time of initial registration when a subscriber holding a mobile terminal aboard a mobile object As shown in Figure 3, when subscriber c holding a mobile terminal boards mobile object b, the area is changed to B. Therefore, the area code does not match the previous one, and the exclusive OR of the previous area code LL and the newly received area code PL is "1".
Then, the mobile terminal outputs a location registration request to mobile body b. When the acceptance signal is responded from mobile unit b,
The mobile terminal sends an ID number and a phone number c'.

In the mobile body b, the ID number and telephone number c' of the subscriber c are thereby written in the accommodation terminal number tp portion of the mobile internal file 15. Then, a location registration request is output to the wireless base station 17. When the acceptance signal is responded from the radio base station 17, the mobile unit b sends to the radio base station 17 the ID number IDv of the mobile unit b, the telephone number (representative number) Av of the mobile unit b, and the subscriber c.
sends the ID number and phone number c′ of the mobile device. Based on these, the radio base station 17 sends a location registration request to the subscriber exchange 6 and the IDv, Av,
The ID number and telephone number c' of the mobile terminal of subscriber c are sent.

The subscriber exchange 6 transfers IDv, Av, ID, and C' to the database 9 under its direct control. data·
The base 9 checks the IDv of mobile unit b, and if there is no error, the representative wired circuit connected to the home wireless base station of mobile unit b, which is already fixedly stored in the subscriber file, is Read the home terminal number tv, which is the corresponding terminal number, and select subscriber c from c′.
Identify home area C of Av, tv, ID,
Transfer C' to the corresponding database 8. In the database 8 corresponding to the subscriber c, the phone number of the mobile unit b is stored in the C′ section of the file of the database 8.
Enter Av and its home terminal number tv. When this registration is completed, the database 8 sends out a completion notification, which is sequentially transmitted to the database 9, subscriber exchange 6, radio base station 17, and mobile unit b.

Such settings at the time of initial registration may be used by other subscribers d...
It is also done in the same way.

(2) Updating the location information of mobile objects Mobile object b on which subscribers c, d...
When you move from area B to area A shown in the figure and enter the service area of the wireless base station 16, and the area code no longer matches the previous area code, the previous area code LL
The exclusive OR of PL and the newly received area code PL is "1", and mobile unit b connects to wireless base station 16.
Outputs a location registration request to. The mobile unit b to which the acceptance signal is responded from the wireless base station 16 sends its ID number and telephone numbers IDv and Av.

Based on this, the radio base station 16 sends a location registration request and the IDv and Av to the subscriber exchange 6. The subscriber exchange 6 sends to the database 9 to which it belongs IDv, Av, and the terminal number tv of the representative wired line corresponding to the wireless base station 16 in area A to which the new location registration request has been sent. . In the database 9, IDv is verified and new location information tN (area A in this example) is entered in place of the old location information tv. Then, it reports a completion notice to the subscriber exchange 6 indicating that writing of the new location information tN has been completed. This notification of completion is sequentially transmitted to the wireless base station 16 and mobile unit b.

In this way, even if the area of mobile body b is updated, only the location information of the database of mobile body b is updated, and the databases of the many subscribers aboard this mobile body are not updated.

(3) Communication to subscriber on board mobile unit When communicating with subscriber c on board mobile unit b, first the database 8 in the home area of subscriber c is accessed, and then The telephone number of mobile body b on which subscriber c is boarding and the accommodation terminal number tv of mobile body b in the database 9 are obtained. As a result, the position information of mobile object b is obtained from the database 9.
Since we can read out tN and know that it is located in area A, we can make a call to mobile unit b via the wireless base station 16 and communicate with subscriber c on board mobile unit b. .

In the above description, an example has been described in which the moving body is a ferry, but of course the moving body is not limited to this.

〔Effect of the invention〕

According to the present invention, a mobile body accommodating a plurality of subscribers is positioned as a group subscriber, and its location information is managed in the same way as individual subscribers, and the location information file of the individual subscriber includes the homepage of the group subscriber. The location information of the station (fixed) is stored, and the location information of the group member that changes from time to time, that is, the area information, is stored, and the location information file of the group member is stored as the mobile unit moves. Only updated. Therefore, even if there is a change in the location of a mobile object, there is no need to update the files for multiple subscribers on board the mobile object, which can significantly reduce the amount of data transferred and prevent data link efficiency from decreasing. can.

[Brief explanation of the drawing]

Fig. 1 is a diagram explaining the principle of the present invention, Fig. 2 is a network configuration diagram showing an embodiment of the present invention, and Fig. 3 is a diagram showing the initial registration when a subscriber boards a mobile object in the present invention. Control sequence, FIG. 4 is a control sequence when updating location information of a mobile object in the present invention, FIG. 5 is a schematic diagram of a conventional location information management state,
FIG. 6 is an explanatory diagram of a conventional location information transfer, FIG. 7 is a diagram of a conventional network configuration, and FIG. 8 is a diagram of a conventional location registration sequence. 1, 2, 3... Trunk exchange, 4, 5, 6... Subscriber exchange, 7, 8, 9... Database, 14... Area code comparison section, 15... File in mobile, 1
6, 17, 18, 19...Radio base station.

Claims (1)

[Scope of Claims] 1. In a mobile communication system that allows subscribers to hold mobile terminals and allows them to move, there is provided a comparison means 14 for comparing area codes for a mobile body that accommodates a plurality of subscribers and moves. , a mobile internal file 15 is provided, and a database is provided in each of the subscriber and the mobile unit in its home station, and when the subscriber boards the mobile unit, the file location information of the home station of the mobile unit is stored in the subscriber's database. Enter the location information of the destination in the database of the mobile unit, enter the information of the subscriber on board the mobile unit in the file within the mobile unit, and when the area of the mobile unit is updated, the home station of the mobile unit A group tracking method characterized by updating location information in a database.