JPH1093704A - Communication service system for personal identification number - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a personal identification number communication service system with which the load of a home node related to a connection request (call origination) can be reduced and a path can be connected without going through home node related a connection request to a user in the same area and a connection request to a user to perform access frequently. SOLUTION: For the system in which a home node 10 and plural local nodes 20 are connected through a signal network 6 and the local nodes 20 are provided for the unit of areas in the case of dividing a telephone network 1 into plural areas, a complete subscriber information table 16 for storing the personal identification information of all the subscribers and an inter-node control part 17 for performing inter-node control are provided inside the home node 10, and the local node 20 is provided with an intra-area subscriber information table 21 for storing the personal identification information of the subscriber in the area and a local node control part 30 for controlling the communication service.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal identification number communication service system, and more particularly, to a personal identification number communication service system in which a fixed telephone, a mobile phone, or the like is used as a communication terminal, and a telephone can be transmitted and received using a personal identification number. About.

[0002] In recent years, there has been a demand that a caller wants to communicate with a partner without being aware of the terminal number owned by the user. For this reason, a communication system that provides connection based on a personal identification number given to each individual is provided. However, since a registered terminal number owned by a user changes due to a change in an area where the user is located or a change in terminal equipment, This information needs to be constantly managed by the service providing system.

[0003]

2. Description of the Related Art One-number services have been used to realize personal identification number communication services. In this service, a personal number "One Number" is set for a contracted user, so that one telephone number of various communication devices such as a general telephone, a FAX, a pager, a mobile phone, and a PHS ("One Number") is provided. ) And provide services. The user can call the incoming call to any terminal owned by the user as desired, and can send a message to a pager if the call cannot be received.

FIG. 11 is a block diagram showing a configuration example of a conventional one-number service system. In the figure, 10
Reference numeral 1 denotes a home node (service control device) for performing the overall control operation, and 1 denotes a telephone network to which the home node 10 is connected. In the home node 10, reference numeral 11 denotes a personal identification number (personal ID; P for short) of a subscriber (user) subscribing to the one-number service connected to the telephone network 1.
ID), a service control unit 12 for controlling terminal connection with reference to the subscriber information table 11, a call processing unit 13 connected to the service control unit 12 and performing a call processing operation, Reference numeral 14 denotes an input processing control unit that receives an input from the telephone network 1 and performs input processing, and 15 denotes an output processing control unit that performs output processing for outputting to the telephone network 1. These service control unit 12, call processing unit 13, input processing control unit 14, and output processing control unit 15 can be configured by hardware or software.

[0005] Reference numeral 2 denotes a fixed network constituting the telephone network 1, and reference numeral 3 denotes a mobile network constituting the telephone network 1. A plurality of fixed networks 2 and mobile networks 3 are provided.
However, mobile terminals 5 are connected to the mobile network 3. As the normal terminal 4, for example, a telephone, a facsimile or the like is used. As the mobile terminal 5, for example, a mobile phone or a pager is used.

FIG. 12 is a diagram showing a configuration example of a conventional subscriber information table 11. 11a is a registered personal identification number (PID; personal ID). This personal identification number is represented, for example, by a six-digit number such as “001122”. Reference numeral 11b denotes a user-owned registered terminal number indicating the number of a terminal owned by the user. The figure shows a case where all the users have three terminals A, B and C, but the present invention is not limited to this. The number of terminals may be arbitrary. The terminal number is, for example, “001-001-1”
111 ". 11c is service information for each PID. The operation of the conventional system configured as described above will be described below.

When a user makes a connection request (call),
It accesses the home node 10 using the telephone network line 1 and sends out the personal identification number of the connected user. On the home node 10 side, when the input processing control unit 14 receives this personal identification number, it passes control to the service control unit 12. The service control unit 12 accesses the subscriber information table 11 and checks whether or not the personal identification number is registered. If the personal identification number is registered, the service control unit 12 checks the registered terminal type / number and the user service information. It acquires, determines the connection terminal, and passes control to the call processing unit 13. The call processing unit 13 connects a path between a calling user and a connection destination terminal (terminal 4 or mobile terminal 5). The call connection is performed in this manner.

[0008]

In the conventional system described above, the home node 10 collectively manages the registered terminal information owned by the user, and the home node 10 also performs service control and call processing control. For this reason, access to the home node 10 occurs for every call, and an increase in traffic and an increase in load due to the use of the telephone network line 1 for the home node 10 cannot be avoided.

[0009] Further, even if the caller and the connection destination user are in the same area (short distance), the connection is made via the home node 10, so that there is a problem that a communication route overhead occurs.

The present invention has been made in view of such a problem, and can reduce the load on a home node for a connection request (calling). It is an object of the present invention to provide a personal identification number communication service system capable of connecting a path without passing through a home node in response to a connection request to a user who makes a connection.

[0011]

[Means for Solving the Problems]

(1) FIG. 1 is a principle block diagram of the present invention. The same components as those in FIG. 11 are denoted by the same reference numerals. The system shown comprises a home node 10 and a plurality of local nodes 20.
Are connected via the signal network 6 and the local node 20
Constitutes a system provided for each area when the telephone network 1 is divided into a plurality of areas. That is, in the present invention, the telephone network (service area) 1 is divided into a plurality of areas in physical units, and the local node 20 is provided for each of the divided areas. Reference numeral 40 denotes a divided area. In the figure, two local nodes # 01 and # 02 are shown.

In the present invention, since the home node 10 and the local node 20 are connected by the signal network 6, entry into the home node 10 by a telephone network line is eliminated, the speed of home access processing is improved, and each node is improved. It facilitates data transfer between devices. In the home node 10,
16 is an all subscriber information table storing personal identification numbers of all users registered in the one-number service in the telephone network 1 and information related thereto, and 17 is connected to the local node 20 and connected to the local node 20. Is an inter-node control unit that provides personal information of a corresponding user in response to the information acquisition request.

In the local node 20, reference numeral 21 denotes an in-area subscriber information table for storing personal identification numbers registered in the one-number service of users existing in the area 40 under its own control and information related thereto. It is a local node control unit that is connected to the subordinate area 40 and performs call connection control.

In the telephone network 1, reference numeral 40 denotes the above-mentioned area, 2 denotes a fixed network provided in the area 40, and 3 denotes a mobile network provided in the same area 40. The figure shows a case where the telephone network 1 is divided into two areas,
The present invention is not limited to this, and can be divided into an arbitrary number of areas. In this case, the local node 20
Exist as many as the areas.

Reference numeral 4 denotes a telephone connected to the fixed network 2, a facsimile
And 5 are mobile terminals such as mobile phones and pagers that are wirelessly connected to the mobile network 3. According to the configuration of the present invention, when the local node control unit 30 requests connection using the personal identification number from the terminal 4 or 5, the local node control unit 30 first refers to the intra-area subscriber information table 21 and Check if it exists in the area, and if it exists in your area, connect the path to the connection destination terminal,
If it does not exist in its own area, it accesses the home node 10 to obtain the connection destination user information, and connects the path to the connection destination terminal in another area via the corresponding local node, so that the user in the same area Can be connected without accessing the home node 10 in response to a connection request to the home node 10, the load on the home node 10 can be reduced.

(2) In this case, the intra-area subscriber information table 21 contains information on users registered in the own area, and personal identification numbers of users in other areas with which the user frequently communicates. The node information (cache information) accommodating the information is stored, and when a connection is requested from a terminal using a personal identification number, the local node control unit 30 in the local node 20 does not access the home node 10 and stores the cache information. It is characterized in that a connection destination local node is determined based on the path and a path is connected.

According to the configuration of the present invention, the home node 1 is provided not only to the user in the own area but also to the user who frequently uses the user even in the other area.
Thus, the path can be connected without passing through 0, and the load on the home node 10 can be reduced.

(3) The intra-area local node control unit 30 is configured to, when a connection request is received from another local node, if the corresponding connection destination user information is not registered in the intra-area subscriber information table. It is characterized in that the home node is accessed via the signal network based on the personal identification information of the connection destination user to obtain the connection destination user information, and a path is newly connected to the corresponding local node.

According to the configuration of the present invention, the local node accommodating the caller can perform communication without being aware of the movement of the connection destination user, and access the home node without using the telephone network line. be able to.

(4) Further, when a connection request is made from the local node accommodating a caller to another local node, a local node ID accommodating the caller is added in addition to the personal identification information, and the latest information is obtained at the other local node. In this case, the cache information of the caller-accommodating local node is updated when the call is received.

According to the configuration of the present invention, when the latest information is acquired by the other local node 20, the cache information of the local node 20 can be updated.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a block diagram showing an embodiment of the present invention. The same thing as FIG.
The same reference numerals are given. In the figure, reference numeral 10 denotes a home node, and 20 denotes a local node connected to the home node 10 via the signal network 6. The telephone network 1 is divided into a plurality of areas 40 in physical units. Although the figure shows a case where the area is divided into an area A and an area B, the present invention is not limited to this, and the area can be divided into an arbitrary number of areas.

One local node 20 is provided for each divided area. In the embodiment shown in the figure,
It is provided corresponding to area A and area B, respectively. In the home node 10, reference numeral 16 denotes an entire subscriber information table storing personal identification numbers of all users (subscribers) registered in the one-number service and information related thereto in the telephone network 1; Is an inter-node control unit for performing one-number service control with reference to the all subscriber information table 16.

In the local node 20, an area subscriber information table 21 stores personal identification numbers of users (subscribers) registered in the one-number service existing in the area and information relating thereto. An inter-node control unit 31 performs inter-node control.

Reference numeral 32 denotes a service control unit for controlling the one-number service with reference to the intra-area subscriber information table 21; 33, a call processing unit for performing call processing control;
Is an input processing control unit that is connected to the telephone network 1 and performs input processing, and 35 is an output processing control unit that is also connected to the telephone network 1 and performs output processing. These inter-node control units 31,
Service control unit 32, call processing unit 33, input processing control unit 3
4 and the output processing control unit 35 constitute the local node control unit 30 of FIG.

In each area 40, 2 is a fixed network, 3 is a mobile network, 4 is a terminal such as a telephone and a facsimile connected to the fixed network 2, and 5 is a mobile phone and a pager connected to the mobile network 3. It is a mobile terminal. In the figure, within the area,
Although the case where one fixed network 2 and one mobile network 3 are provided is shown, the present invention is not limited to this, and an arbitrary number of fixed networks and mobile networks can be provided.
Further, the number of terminals connected to the fixed network 2 and the mobile network 3 may be arbitrary.

FIG. 3 is a diagram showing a configuration example of the intra-area subscriber information table 21. 21a is a personal identification number (personal I
D) is the registration number of the user who has subscribed to all the one-number services in the area. 21b is a user-owned registered terminal number indicating the type of terminal owned by the registered user. In the figure, each user has terminals A, B, C
Although the case where three terminals are owned is shown, the present invention is not limited to this, and each user can own an arbitrary number of terminals.

Reference numeral 21c denotes service information set for each user. This information indicates, for example, a use time zone, a use date, and the like. For example, a terminal used by the user is set for each use time zone. For example, terminal A is at time 0:00 to 00
Until 8:00, terminal B is set from 8:00 to 16:00, terminal C is set from 16:00 to 24:00, and so on. Thus, for example, a subscriber has a personal identification number 001
When the terminal is connected to the terminal 122 and the time is 12:30, the terminal B is automatically connected to the terminal B.

Reference numeral 21d denotes connection destination user cache information. In this case, even in another area, in the case of a frequently used destination, a user of another area can connect without accessing the home node. The personal identification number and the local node information (cache information) accommodating the personal identification number are set. As shown in the drawing, the connection destination personal identification number 41 and the corresponding user accommodation local node access number 42 are set in the cache information. For example, when the connection destination personal identification number is 778899, the user exists in the area of the local node with the access number 002-000-1111.

FIG. 4 is a diagram showing a configuration example of the all subscriber information table 16 in the home node 10. Its configuration is shown in FIG.
Is substantially the same as the configuration of the intra-area subscriber information table 21 shown in FIG. That is, it is composed of a personal identification number 16a, a user-owned registration terminal number 16b, service information 16c, and an accommodation local node access number 16d. The all subscriber information table 16 stores information of users (subscribers) who have subscribed to all one-number services in the telephone network 1. The inter-node control unit 17 of the home node 10 and the inter-node control unit 3 of the local node 20
1, the service control unit 32, the call processing unit 33, the input processing control unit 34, and the output processing control unit 35 can be realized by using hardware or software. The operation of the system configured as described above will be described below.

When the user accesses the local node 20 and inputs the personal identification number of the connection destination user, the personal identification number is sent to the service control unit 3 via the input processing control unit 34.
Enter 2. The service control unit 32 searches the in-area subscriber information table 21 based on the personal identification number. If the connection destination user exists in the own area, the service control unit 32 searches the intra-area subscriber information table 21, and then determines a corresponding connection destination terminal according to the type of the registered service. The control is passed to the call processing unit 33. The call processing unit 33 activates the output processing control unit 35 to connect a path to a target terminal.

On the other hand, when the connection destination user does not exist in the own area, the service control unit 32 passes control to the inter-node control unit 31, and the inter-node control unit 31
To access. In the home node 10, the inter-node control unit 17 searches for the connection destination user with reference to the all subscriber information table 16, and notifies the service control unit 32 of the obtained local node access number of the connection destination user as a result of the search. . Thereafter, the call processing unit 33 activates the output processing control unit 35 based on the local node access number, and performs a path connection to the corresponding local node. The call processing unit 33 of the corresponding local node activates the output processing control unit 35,
The path is connected to the destination terminal according to the service type.

According to this embodiment, when the local node control unit 30 makes a connection request using the personal identification number from the terminal 4 or 5, the local node control unit 30 first refers to the intra-area subscriber information table 21 to connect to the connection destination terminal. Is checked in the own area, and if it is in the own area, a path is connected to the connection destination terminal. If not, the home node 10 is accessed to access the user. By acquiring the information and connecting a path to a connection destination terminal in another area via a corresponding local node, the home node 10 can respond to a connection request for a user in the same area.
Can be connected without accessing the home node 10, so that the load on the home node 10 can be reduced.

If the connection destination user does not exist in the own area and the user is a frequent communication partner, the information about the user is stored in the area subscriber information table 21 in the connection destination user cache information. 21
It is stored as d (see FIG. 3). In this case,
The service control unit 32 searches for the personal identification number of the calling user by referring to the personal identification number 21a of the calling subscriber. Then, referring to the connection destination user cache information 21d based on the personal identification number, the personal identification number 41 and the user accommodation local node access number 42 of the connection destination user are obtained. Thereafter, control is passed to the call processing unit 33.

The call processing unit 33 transfers the caller information to the local node 20 where the connection destination user is accommodated. In the corresponding local node 20, the service control unit 32 receives this information, confirms that the corresponding user exists in the own area by referring to the intra-area subscriber information table 21, and then controls the call processing unit 33. hand over. The call processing unit 33
The output processing control unit 35 is activated, and a path is connected to a terminal according to the type of service of the user.

According to this embodiment, not only users existing in the own area but also users who are frequently used in other areas do not pass through the home node 10 without passing through the home node 10. Can be connected, and the load on the home node 10 can be reduced.

Upon receiving a connection request (calling) from another local node, the service control unit 32 uses the received personal identification number to store the subscriber information table 2 in the area.
1 is searched. Here, if the corresponding user does not exist, that is, if the cache information of the caller-accommodating local node 20 is different from the current state, the service control unit 3
2 passes control to the inter-node control unit 31, which accesses the home node 10 via the signal network 1. The inter-node control unit 17 of the home node 10 searches the entire subscriber information table 16 to find a corresponding personal identification number.

The inter-node control unit 17 notifies the service control unit 32 of the local node of the personal identification number of the connection destination found in this way and related information. The service control unit 32 activates the inter-node control unit, updates the in-area subscriber information table 21 of the originating node with new information, and passes control to the call processing unit 33. The call processing unit 33 activates the output processing control unit 35, and the output processing control unit 35 connects a path to a terminal according to the service type of the user of the local node 20 where the connection destination user exists.

If the cache information of the connection destination user is not registered in the cache information 21d in the caller-accommodating local node in advance, the caller-accommodating local node 20 accesses the home node 10 as described above.
The connection destination user information is obtained from all the subscriber information, and the connection destination local node is determined.

According to this embodiment, the local node accommodating the caller can perform communication without being aware of the movement of the connected user, and can access the home node without using the telephone network line. can do.

(1) Next, the operation sequence of the present invention will be described. Here, the operation of the local node from originating to terminating will be described. A case where an inter-node control program is used as the inter-node control unit 31, a service control program is used as the service control unit 32, and a call processing program is used as the call processing unit 33 will be described.

First, an operation when cache information of a local node accommodated by a connected user exists for a personal identification number of a caller in the intra-area subscriber information table 21 of the local node 20 of the caller will be described with reference to FIG. This will be described with reference to FIG.

FIG. 5 is a sequence diagram showing an example of the operation of processing 1 according to the present invention. When the user dials the local node access number from the calling terminal (S1), the call processing program (hereinafter referred to as CP1) in the local node # 01 sends a message requesting an authentication number for authenticating the caller to the calling terminal. (S2). Here, authentication means
This means checking whether the one-number service is registered. The caller dials the authentication number (S3).

Upon receiving the authentication number, CP1 checks whether the authentication number is OK (S4). If the authentication is not OK, an error occurs. If the authentication is OK, CP1 is the personal identification number (personal ID) of the connected user
Is sent to the sender (S
5).

Here, when the caller dials the personal identification number of the connection destination user (S6), CP1 transmits the connection destination personal identification number and the caller's personal identification number to the local node #.
01 to the service control program (hereinafter, SC1), and the process shifts to SC1 (S7).

At SC1, a search is made of the intra-area subscriber information table 21 (UD1) based on the sender's personal identification number and the connection destination user's personal identification number (S8). Then, it is checked whether the connection destination user exists in the own node (S9). When the connection destination user exists in the local node, the SC1 determines the connection destination terminal based on the terminal information and the service information currently registered for the user, and
The connection destination terminal number is notified to P1 (S10). Upon receiving the connection destination terminal number, CP1 determines a destination terminal, sends a ringer to the terminal, and makes a call (S12).

If the connection destination user does not exist in the local node, SC1 checks whether the cache information of the connection destination user (see 21d in FIG. 3) exists in UD1 (S11). If the cache information is present in the cache information of the connection destination user corresponding to the caller personal identification number, SC1 passes the connection destination user personal ID, the accommodation local node access number, and the own node ID to CP1 (S13), Makes a line connection to the other local node # 02, and transmits the connection destination personal ID and the own node ID to the other local node (S14).

FIG. 6 is a sequence diagram showing an example of the operation of the process 2 of the present invention, showing the operation of the local node # 02.
Upon receiving the connection destination personal ID and the own node ID transmitted from another local node (S1), the call processing program (hereinafter CP2) transmits the caller personal ID and the connection destination user personal ID to a service control program (hereinafter SC2). (S2). SC2 receives these information,
The in-area subscriber information table 21 (hereinafter UD2) is searched based on the received connection destination user personal ID (S2).
3).

Then, it is checked whether the connection destination user is a user in the own node (S4). If the connection destination user is a user in the own node, the SC2 determines the connection destination terminal based on the terminal information and the service information currently registered for the user, and notifies the CP2 of the connection destination terminal number. (S5). Upon receiving the connection destination terminal number information, the CP 2 determines the destination terminal, sends a ringer to the destination terminal, and makes a call (S6).

(2) Next, a case where the cache information of the local node accommodating the connection destination user held for the local node accommodating the caller is different from the actual information will be described. The processing in this case is shown in FIG. 5 (processing 1), FIG. 7 (processing 3), FIG. 6 (processing 2), and FIG. 9 (processing 5).

The processing 1 is the same as the case (1). After that, the processing shifts to processing 3 in FIG. FIG. 7 is a sequence diagram showing an example of the operation of the process 3 of the present invention. The call processing program (CP2) of the local node # 02 transmits the connection destination user personal ID and the own node ID from another local node.
Is received (S1), control is passed to the service control program (SC2) (S2).

SC2 searches the intra-area subscriber information table 21 based on the received information (S3), and checks whether the connection destination user is a user in the own node (S3).
4). If the connection destination user is a user in the own node, SC2 determines the connection destination terminal based on the terminal information and service information currently registered for the user,
Is notified of the connection destination terminal number (S5). Upon receiving the connection destination terminal number, CP2 determines the destination terminal, sends a ringer to the terminal, and makes a call (S6).

If the connection destination user is not in the own node, SC2 notifies the connection destination user personal ID to the inter-node control program 31 (NC2) and passes control (S7).
The NC 2 accesses the home node 10 and notifies the connection destination user personal ID (S8).

In the home node 10, the inter-node control unit 1
7 accesses the all subscriber information table 16 and searches for all subscribers (S9). As a result, when the user information is obtained, the user information is notified to the NC 2 (S1).
0). NC2 notifies the corresponding user information to SC2 (S11).

SC2 notifies the source node ID and the corresponding user information to NC2 based on the corresponding user information (S12).
NC2 notifies these information to originating node # 01 (S2).
13). The originating node performs the operation of process 5 (see FIG. 9). Then, based on the received information, the corresponding user information is written in the cache information of the intra-area subscriber information table 21, and the information is updated.

FIG. 9 is a sequence diagram showing an example of the operation of processing 5 of the present invention. Inter-node control program (NC
1), upon receiving the personal identification number and the corresponding personal information from the other local node 20, notifies the service control program (SC1) of the information and passes the control (S2). S
C1 updates the cache data in the intra-area subscriber information table 21 based on the information (S3).

On the other hand, returning to FIG. 7, the SC 2 determines the connection destination local node 20 based on the received connection destination user information (S 14), and connects to the connection destination personal ID and the accommodation local node access number (ID). And its own node ID as CP2
(S15). Upon receiving the information, the CP 2 transmits the connection destination personal ID and the own node ID to the accommodation local node 20 (S16). Thereafter, the process proceeds to the process 2 (see FIG. 6).

(3) Next, the caller-accommodating local node 2
The operation in the case where the information of the connection destination user with respect to the caller at 0 does not exist as a cache will be described. A series of processes in this case are shown in FIG. 8 (process 4) and FIG. 6 (process 2). FIG. 8 is a sequence diagram showing an example of the operation of the process 4 of the present invention. When receiving the caller's local node access special number dial from the calling terminal (S1), the call processing program (CP1) of the local node # 01 sends a caller authentication special number request message to the calling terminal (S1).
2).

Then, when the caller dials the authentication special number (S3), CP1 checks whether the authentication is OK or not (S4). If the authentication is not OK, an error occurs. If the authentication is OK, CP1 sends a connection request personal identification number request message to the calling terminal (S5).

When the caller dials the connection destination personal ID (S6), CP1 notifies the service control program (SC1) of the caller personal ID and the connection destination personal ID, and passes control (S7). In SC1, the in-area subscriber information table 21 (UD1) is searched (S8), and it is checked whether or not the connection destination user exists in the own node (S9). If the connection destination user exists in the own node, SC1 determines the connection destination terminal based on the terminal information and the service information currently registered for the user, and notifies CP1 of the connection destination terminal number ( S10). Upon receiving the connection destination terminal number, CP1 determines the destination terminal, sends a ringer to the terminal, and makes a call (S11).

If the connection destination user does not exist in the own node, SC1 searches UD1 and checks whether there is cache information of the connection destination user (S12). If there is such cache information, processing 2 (see FIG. 6) is executed (S13).

If there is no connection destination information, SC1 notifies the connection destination user personal ID to the inter-node control program (NC1) (S14), and NC1 accesses home node 10 and notifies the connection destination user personal ID. (S15).
In the home node 10, the inter-node control unit 17 searches the entire subscriber information table 16 (S16), reads out the user information of the corresponding connection destination personal ID, and notifies the NC1 (S1).
7).

When NC1 receives the corresponding user information,
SC1 is notified (S18). SC1 searches the in-area subscriber information table 21 based on the corresponding user information and updates the cache data (S19).

Next, SC1 is the connection destination user personal ID and
The accommodating local node access number and own node ID are C
Notify P1 (S20). CP1 receives these information and transmits the connection destination personal user ID and the own node ID to another local node (S21). Subsequent processing is processing 2
(See FIG. 6).

(4) Next, the operation when the connection destination user exists in the same local node 20 as the caller will be described. The processing in this case is processing 6 (see FIG. 10).
FIG. 10 is a sequence diagram showing an example of the operation of the processing 6 of the present invention. When receiving the caller's local node access special number dial from the calling terminal (S1), the call processing program (CP1) in the local node # 01 sends a caller authentication special number request message to the calling terminal (S1).
2).

When the caller dials the authentication special number (S3), CP1 checks whether the authentication is OK (S4). If the authentication is not OK, an error occurs. If the authentication is OK, CP1 sends a connection destination personal identification number request message to the calling terminal (S5).

When the caller responds to the request,
When dialing D (S6), CP1 receives this, notifies SC1 of the sender's personal ID and connection destination personal ID, and passes control to SC1 (S7).

SC1 is the intra-area subscriber information table 21
(UD1) is searched (S8), and it is checked whether the connection destination user is a user in the own node (S9). If the connection destination user is a user in the own node, the SC1 determines a connection destination terminal based on the terminal information and service information currently registered for the user, and notifies the CP1 of the connection destination terminal number ( S10). Upon receiving the connection destination terminal number, CP1 determines the destination terminal, sends a ringer to the destination terminal, and calls the terminal (S11).

When there is a connection destination user in the same local node 20, data is not stored in the cache as the connection destination user for the sender personal ID of UD1.

As described above in detail, according to the present invention, the control which was conventionally managed by the home node collectively can be distributed and managed, and the load can be distributed by reducing the access frequency to the home node. In addition, since the caller-accommodating local node holds the information of the connection destination node as a cache for each individual and enables connection without passing through the home node, the communication route can be optimized.

[0071]

【The invention's effect】

(1) As described in detail above, according to the present invention,
A home node and a plurality of local nodes are connected via a signal network, and the local node is a system provided in units of areas when a telephone network is divided into a plurality of areas. Subscriber information table for storing personal identification information of a subscriber, and an inter-node control unit for performing inter-node control, wherein the local node has a subscriber in an area for storing personal identification information of a subscriber in the area. By providing an information table and a local node control unit for controlling a communication service, the local node control unit first refers to the intra-area subscriber information table when a connection request is made from a calling terminal using a personal identification number. Check whether the connection destination terminal exists in the local area, and if it exists in the local area, connect the path to the connection destination terminal. However, if it does not exist in its own area, it accesses the home node to obtain the connection destination user information and connects the path to the connection destination terminal in another area, so that it can respond to a connection request for a user in the same area Since the path can be connected without accessing the home node, the load on the home node can be reduced.

(2) In this case, the intra-area subscriber information table contains information on users registered in the own area, personal identification numbers of users in other areas with which the user frequently communicates, and Is stored, and when a connection is requested from the terminal using the personal identification number, the local node control unit in the local node does not access the home node, and the connection destination is determined based on the cache information. By deciding the local node and connecting the path, not only users existing in the area, but also users who frequently exist even in other areas, connect the path without going through the home node And the load on the home node can be reduced.

(3) When the local node control unit in the area receives a connection request from another local node,
If the corresponding connection destination user information is not registered in the local area subscriber information table, the connection destination user information is obtained by accessing the home node via the signal network based on the personal identification information of the connection destination user. By newly connecting a path to the corresponding local node, the local node accommodating the caller can communicate without being aware of the movement of the connected user, and use the telephone network line for the home node. Can be accessed without.

(4) Further, when a connection request is made from the local node accommodating the caller to another local node, the local node ID accommodating the caller is added in addition to the personal identification information, and the latest information is obtained at the other local node. By updating the cache information of the caller-accommodating local node, the cache information of the caller-accommodating local node can be updated when the latest information is acquired by another local node.

As described above, according to the present invention, the load on the home node for connection requests (calls) can be reduced, and connection requests for users in the same area and connection requests for frequently accessed users can be reduced. Thus, a personal identification number communication service system that can connect a path without passing through a home node can be provided, and the effect is great when the communication system is optimized and the number of service subscribers increases.

[Brief description of the drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a diagram illustrating a configuration example of an intra-area subscriber information table.

FIG. 4 is a diagram showing a configuration example of an all subscriber information table.

FIG. 5 is a sequence diagram showing an example of the operation of processing 1 of the present invention.

FIG. 6 is a sequence diagram showing an example of the operation of processing 2 of the present invention.

FIG. 7 is a sequence diagram showing an example of the operation of processing 3 of the present invention.

FIG. 8 is a sequence diagram showing an example of the operation of processing 4 of the present invention.

FIG. 9 is a sequence diagram showing an example of the operation of processing 5 of the present invention.

FIG. 10 is a sequence diagram showing an example of the operation of processing 6 of the present invention.

FIG. 11 is a block diagram showing a configuration example of a conventional system.

FIG. 12 is a diagram showing a configuration example of a conventional subscriber information table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telephone network 2 Fixed network 3 Mobile network 4 Terminal 5 Mobile terminal 6 Signal network 10 Home node 16 All subscriber information table 17 Internode control unit 20 Local node 21 Intra-area subscriber information table 30 Local node control unit 40 Area

Claims (4)

[Claims] 1. A system in which a home node and a plurality of local nodes are connected via a signal network, wherein the local nodes are provided in units of areas when a telephone network is divided into a plurality of areas. Is provided with an all-subscriber information table that stores personal identification information of all subscribers, and an inter-node control unit that performs inter-node control. The local node stores personal identification information of subscribers in the area. A personal identification number communication service system, comprising: an in-area subscriber information table to be provided; and a local node control unit for controlling a communication service. 2. The in-area subscriber information table includes:
It stores information about users registered in its own area, personal identification numbers of users in other areas with which the user frequently communicates, and node information (cache information) accommodating the personal identification numbers. 2. The personal node according to claim 1, wherein when a connection request is issued by the local node, the local node control unit in the local node determines a connection destination local node based on the cache information and connects the path without accessing the home node. Identification number communication service system. 3. The local node control unit in the area,
If there is a connection request from another local node and the corresponding connection destination user information is not registered in the local area subscriber information table, the home node is accessed based on the personal identification information of the connection destination user and the connection destination 3. The personal identification number communication service system according to claim 2, wherein user information is acquired, and a path is newly connected to the corresponding local node. 4. When a connection request is made from a caller-accommodating local node to another local node, a caller-accommodating local node ID is added in addition to the personal identification information, and when the latest information is obtained at the other local node. 4. The personal identification number communication service system according to claim 2, wherein the cache information of the caller-accommodating local node is updated.