KR100416228B1 - System and method for providing number portability by using number portability verification data base - Google Patents

Abstract

The present invention relates to a system for providing number portability. The present invention further comprises a number portability checking database. When a call is requested from a calling terminal, the calling station determines whether the called terminal is under the jurisdiction of the calling terminal using a customer management database. Otherwise, the terminal checks whether the destination terminal has been moved through the number portability confirmation database. As a result of the check, when the called terminal is moved by number, the current telephone station number of the called terminal which has been ported through the number portability database is detected, and a call is requested from the terminal corresponding to the current station number.

Therefore, the present invention reduces the call connection delay, reduces the load on the number portability database, and as a result, the number portability system can be configured more inexpensively.

Description

System for providing number portability using number portability checking database and driving method thereof {SYSTEM AND METHOD FOR PROVIDING NUMBER PORTABILITY BY USING NUMBER PORTABILITY VERIFICATION DATA BASE}

The present invention relates to a system for providing number portability, and more particularly, to a number portability providing system using a number portability confirmation database capable of confirming number movement and a driving method thereof.

Number portability service refers to a service that allows a subscriber to continue to use the original telephone station number without any change even if the subscriber has changed his / her carrier, region, or service.

In the example of number portability service, if subscriber (A) cancels subscription to carrier A and newly subscribes to carrier B, subscriber A continues to use the telephone number previously assigned to subscriber A by subscriber A. Say a service to help. The number portability service can continue to use the same phone number even if the subscriber changes the subscriber station within the same area code, and the subscriber can use the existing phone number even if the operator changes the unusual service for the phone number. You can continue to use the service.

Number portability services are being promoted in each country at the national level with the aim of allowing fair competition between latecomers and new operators entering the telecom business.

The number portability service can be largely classified into an ACQ (All Call Query) method and a QoR (Query On Release) method.

Figure 1 shows a number portability providing system using the All Call Query (ACQ) method.

In the ACQ scheme, in order to provide number portability, the exchange (sending station) 2 in the calling network 1 does not route all calls required from the calling terminal 3 of the calling subscriber to the corresponding telephone station number, but before routing the number portability. A query is made to the database 4 to obtain information such as whether the call has been moved or where it has been moved, and to connect the call using the information obtained from the number portability database 4.

For example, the terminal 5 is subscribed to the network A of the carrier A, and has been assigned a telephone station number (hereinafter referred to as the original telephone station number), but later withdraws the subscription to the carrier A, A case of newly joining the network 7 will be described as an example. In this case, the terminal 5 is given a new telephone station number b (hereinafter referred to as the current telephone station number b) to be used in the network 7 by the B communication service provider, and the terminal in the number portability database 4. The information that the telephone station number of (5) has been changed from the original telephone station number (a) in the network 8 to the current telephone station number (b) in the network 7 is stored. Here, reference numerals 6 and 9 denote exchangers in the networks 8 and 7.

In the above situation, the user of the originating terminal 3 makes a call connection with the terminal 5 using the previous original telephone station number (a) assigned to the terminal 5 (by dialing). 2), the switchboard (sending station) 2 inquires the number portability database 4 of whether the original telephone station number a is routed to another telephone station number (S2). As a result of the query, if the information that the original telephone station number (a) has been changed to the current telephone station number (b) of the network 7 is provided from the number portability database 4 (S3), the exchange (sending station) 2 receives this information ( That is, the call request for the current telephone station number b) is provided to the exchange (recipient station) 9 in the network 7 to connect the call between the calling terminal 3 and the called terminal 5.

As described above, the ACQ method has the advantage that the system is conceptually simple and the possibility of a dispute that can occur between operators is low, but the system must query the number portability database 4 for the number portability for all calls. It has an excessive load on the network, and in order to solve this problem, a large investment in the telephone network is required.

2 illustrates a number portability providing system using a query on release (QoR) scheme. FIG. 2 uses the same reference numerals as in FIG. 1, and assumes a case in which the calling terminal 3 requests the call setup for the called terminal 5 as shown in FIG. 1.

In this system, when a call for a predetermined telephone station number from the calling terminal 3 is requested in order to provide number portability, the call is first made to an exchange (recipient station) 6 in a network (called network) (for example, 8) corresponding to the telephone station number. It is a way of asking. That is, when the calling terminal 3 requests a call for the original telephone station number a as in the example of Fig. 1 (S1), the switchboard (sending station) 2 in the network 1 is the original telephone station number (a). A call is requested to the switchboard (originating station for the original number (a)) 6 of the network 8 which has jurisdiction over (S2). At this time, as shown in the example of FIG. 1, the terminal 5 terminates the contract with the telecommunications operator having jurisdiction over the network 8, and newly joins the telecommunications operator of the network 7 to give a new current telephone station number (b). Suppose you have received it. In this case, since the terminal 5 having the original telephone station number (a) does not exist in the switchboard (originating station) 6, the switchboard (originating station) 6 is connected to the switching station (originating station) 2. In response to the call request, a call release message indicating that the call cannot be connected because there is no original telephone station number (a) is provided to the exchange (sending station) 2 in the network 1 (S3).

When a call release message from the network 8 is provided, the switchboard (sending station) 2 in the network 1 queries the number portability database 4 whether the original telephone station number a has been routed to another telephone station number ( S4). As a result of the query, if the original telephone station number (a) has been provided from the number portability database 4 that the original telephone station number (b) of the network 7 has been changed (S5), the switching station (sending station) 2 receives the current telephone station number. (b) requests a switch (current destination station) 9 in the network 7 to connect a call between the calling terminal 3 and the called terminal 5 in the network 7.

The QoR (Query On Release) method does not ask the number portability database whether the destination terminal's number is moved every time a call is requested, but the switch of the network (first subscription network) corresponding to the original phone number of the destination terminal (origin incoming) The first request is made to the station) to ask the number portability database whether or not the destination terminal is to be ported to the number portability database only when a message indicating that the corresponding terminal does not exist is provided from the initial subscription network.

Therefore, this method has the advantage that the load of the system as a whole is less than the ACQ method, but there is a disadvantage that the call connection time of the number-shifted call and the call that is not different from each other.

An object of the present invention is to provide a number portability providing system using a number portability confirmation database that can quickly and efficiently check whether a number has moved.

In order to achieve the above object, the present invention provides a number portability system, comprising: a number portability confirmation database for storing whether a telephone station number has been moved; A number portability database for storing current telephone station number information of the number ported telephone number; A customer management database storing subscriber information; In response to a call establishment request from a subscriber station, by using the information of the customer management database, the number portability confirmation database, and the number portability database, a call terminal and a call terminal having the call setup number requested as the current phone station number are connected. The exchanger is provided.

The present invention is also provided with a number portability confirmation database for storing whether the number of the telephone number has been moved, and a number portability database for storing current telephone station number information of the number ported telephone number, and a customer management database storing subscriber information. A method of driving an exchange, the method comprising: determining a call station number described in the customer management database when a call setting for a predetermined telephone station number is requested from a subscriber station; Setting up a call with a corresponding terminal if the telephone station number is listed in the customer management database; Determining that the telephone station number is not listed in the number portability confirmation database if the telephone station number is not listed in the customer management database; If the telephone station number is not listed in the number portability confirmation database, requesting to set up a call at an exchange of a network corresponding to the telephone station number to establish a call; If the telephone station number is listed in the number portability confirmation database, obtaining current telephone station number information corresponding to the telephone station number from the number portability confirmation database; Requesting establishment of a call at an exchange of a network corresponding to the acquired current telephone station number information and connecting the call.

1 is a block diagram of a number portability providing system using a conventional All Call Query (ACQ) scheme;

2 is a block diagram of a number portability providing system using a conventional query on release (QoR) method;

3 is a block diagram of a number portability providing system using a number portability confirmation database according to the present invention;

4 is a diagram illustrating a call processing process when there is a called party inside a calling station in a system using a number portability confirmation database according to the present invention.

5 is a diagram illustrating a call processing process when there is a called party outside the calling station in the system using the number portability confirmation database according to the present invention and the number is not moved.

FIG. 6 is a diagram illustrating a call processing process when a called party is located outside the calling station in the system using the number portability confirmation database according to the present invention.

<Description of the code | symbol about the principal part of drawing>

1, 7, 8: network 2, 6, 8: exchanger

3, 5: terminal 4: number portability database

11: customer management database

13: Number portability check database

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic block diagram of a number portability providing system according to the present invention. In FIG. 3, the same reference numerals are used for the same components as in FIGS. 1 and 2.

As shown, in the present embodiment, three networks exist, and each network 1, 7, 8 is assumed to be controlled by different communication providers. The switches 2, 6, 8 in each network 1, 7, 8 are all connected by an intelligent network. The customer management database 11 is configured in the exchanges 2, 6, and 9 (FIG. 3 shows that the customer management database 11 is connected only to the exchange 2 for convenience of explanation. ), The customer management database 11 stores customer information, such as a telephone station number, that the exchanges 2, 6, and 9 have jurisdiction over. It will be readily understood by those skilled in the art that the customer management database 11 is not a device newly proposed in the present invention but a device basically configured in an existing exchange.

Each network 1, 7, 8 is connected to a number portability database 4 and a number portability confirmation database 13. The number portability database 4 stores information on terminals with which the telephone station number has been moved, and the number portability confirmation database 13 stores information on whether each terminal has moved. That is, whether or not the predetermined telephone station number is moved can be confirmed using the number portability confirmation database 13, and new telephone station number information and the like of the terminal to which the number has been moved can be confirmed using the number portability database 4.

In the system having the above-described configuration, the terminal 5 is subscribed to the network A of the carrier A and the original telephone station number of a has been assigned. However, the terminal 5 is withdrawn from the subscription to the carrier A and the network of the carrier B ( The operation of the system will be described using the case of newly joining 7) and the case where the current telephone station number b is assigned.

In Fig. 3, the originating terminal 3 connected to the exchange 2 of the network 1 provides a predetermined telephone station number (hereinafter referred to as a call request telephone station number) to the exchange (it becomes the calling station). Attempting a call connection, the exchange (calling station) 2 searches for whether there is telephone station number information corresponding to the call request telephone station number in the customer management database 11. That is, the switch 2 searches for whether the telephone station number requested by the calling terminal 3 is the telephone station number of the terminal belonging to the switching center (sending station) 2.

When the customer management database 11 is queried and the same telephone station number as the call request telephone station number is found, that is, if the call request telephone station number is the telephone station number of the terminal belonging to the exchange (calling station) 2, the exchange 2 calls the call request telephone. Connect a call between a terminal (not shown) having a station number as a telephone station number and the calling terminal 3.

On the other hand, the telephone station number corresponding to the search result call request telephone station number of the customer management database 11 can be classified into two cases. The first may be the telephone station number of the terminal 5 in which the call request telephone station number belongs to another network (for example, the network 7), and the second may be the telephone station number of the terminal 5 in which the call request telephone station number has been moved. have. Even in these two cases, in order to connect the call to the corresponding terminal 5, the exchange (sending station) 2 of the present invention performs the following process.

First, the exchange (calling station) 2 inquires of the number portability confirmation database 13 to confirm whether or not the corresponding telephone station number has been moved. As a result of the check, in the case of the telephone station number which has not been ported, the call is requested to the exchange (it becomes the destination station) 9 of the network (for example, (7)) corresponding to the call request telephone station number. The exchange (receiving station) 9 makes a call between the calling terminal 3 and the called terminal 5 by requesting a call from the terminal 5 having the call request telephone station number in response to the call request.

Next, when it is confirmed through the number portability confirmation database 13 that the telephone station number has been shifted to a number, the exchange (sending station) 2 transfers the call request telephone station number to the number portability database 4. Request current phone number information. When the current telephone station number information is provided from the number portability database 4, the switchboard (sending station) 2 is connected to the current telephone station number corresponding to the current telephone station number of the network (for example, (7)). (9), the switchboard (current destination station) 9 makes a call by requesting a call from the destination terminal 5 having the corresponding telephone station number (current telephone station number) in response to the call request. The call between the terminal 3 and the destination terminal 5 is connected.

4 to 6 illustrate the above-described action in chronological order.

FIG. 4 is a diagram showing a case where a terminal corresponding to a call request telephone station number requested by the calling terminal 3 belongs to the jurisdiction of the same exchange (calling station) 2. FIG.

When the terminal 3 requests call setting for the predetermined telephone station number (S11), the switchboard (sending station) 2 requests confirmation of whether the call request telephone station number exists in the customer management database 11 (S12). In the example of Fig. 4, as described above, the terminal having the call request number is within the jurisdiction of the exchange (calling station) 2, so that the customer management database 11 is in the jurisdiction of the same exchange (calling station) 2. The switchboard (sending station) 2 is notified (S13). The exchange (calling station) 2 sets up a call between the called terminal having the call request number and the calling terminal 3 according to the notification from the customer management database 11 (S14).

FIG. 5 is a diagram illustrating a case where a called terminal (for example, 5) corresponding to a call request telephone station number requested by the calling terminal 3 belongs to the jurisdiction of an exchange (receiving station) 9 of another network 7. FIG.

When the calling terminal 3 requests call setup for the predetermined telephone station number (S21), the switchboard (sending station) 2 requests confirmation that the call management telephone station number exists in the customer management database 11 (S22).

In the example of FIG. 5, the reception terminal 5 is located in another network (for example, 7). For example, since the number does not move from the customer management database 11, the terminal is not a jurisdiction terminal of the calling station. The originating station is notified to (2) (S23).

Accordingly, the exchange (calling station) 2 requests a number porting confirmation from the number portability confirmation database 13 to confirm whether the call request telephone station number has been shifted (S24). In the case of Fig. 5, since the call request telephone station number has not been moved, the number portability confirmation database 13 notifies the switch (calling station) 2 that the call request telephone station number has not been moved (S25).

By the notification from the number portability confirmation database 13, the switchboard (sending station) 2 confirms that the call request number is the telephone station number of the terminal 5 subscribed to another network 7 which has not been number shifted. Accordingly, the call setup request is made to the exchange (recipient station) 9 of the network 7 (S26). The exchange (receiving station) 9 of the network 7 approves the call setup in response to a call request from the exchange (sending station) 2 (S27), and accordingly, the originating terminal 3 and the terminating terminal 5 The call is connected (S28).

FIG. 6 shows that the terminal 5 having the original telephone station number having the call request telephone station number for which call setting is requested from the calling terminal 3 is moved to the telephone station number (current telephone station number) of another network (for example, (7)). It is a figure which shows the case.

When the calling terminal 3 requests call setting for the call request telephone station number (S31), the switchboard (sending station) 2 requests confirmation whether the request telephone station number exists in the customer management database 11 (S32). In the example of Fig. 6, the call request telephone station number has been moved to a number of another network 7, so that there is no call request telephone station number from the customer management database 11, i.e., the terminal of the calling station 2; This is notified (S33). Accordingly, the exchange (calling station) 2 requests a number porting confirmation from the number portability confirmation database 13 to confirm whether the call request telephone station number has been shifted (S34). In the case of Fig. 6, since the call request phone station number has been moved, the number portability confirmation database 13 provides the switch (calling station) 2 that the call request phone station number has been moved (S35).

The exchange (originating station) 2 knows that the call request telephone station number has been shifted by a notification from the number portability confirmation database 13, and thus the call request telephone station number has been moved to the number portability database 4 accordingly. Request the station number (current telephone station number) (S36). The number portability database 4 provides the switch (calling station) 2 with the current telephone station number whose call request telephone station number has been shifted in response to a request from the switch (calling station) 2 (S37). The exchange (calling station) 2 requests a call establishment from the switch (receiving station) 9 of the network 7 corresponding to the current telephone station number provided from the number portability database 4 (S38). The exchange (receiving station) 9 of the network 7 approves the call setting in response to the call establishment request from the exchange (sending station) 2 (S39), and accordingly, the originating terminal 3 and the terminating terminal 5 ) Call is connected (S40).

As described above, it is a modification of the existing All Call Query (ACQ) or Query On Release (QoR) method. The ACQ method adds a load to the number portability database by querying the number portability database for all calls. The QoR method determines the mobility of the telephone station number in the first connected telephone network once it has been routed, and when the telephone station number is moved, it provides only the signal that the mobile station has been moved to the calling network, and the calling network checks the number portability database again for routing information. As a result, delay of call connection occurring in this process cannot be avoided. The present invention proposed to solve the above shortcomings by reducing the number portability identification database and the number portability identification database to reduce the call connection delay, reduce the load of the number portability database, and as a result ACQ the number portability system There is an advantage that can be configured more cheaply than.

Claims (6)

A system that provides number portability A number portability confirmation database for storing whether a number of a telephone station number has moved; A number portability database for storing current telephone station number information of the number ported telephone number; A customer management database storing subscriber information; In response to a call establishment request from a subscriber station, by using the information of the customer management database, the number portability confirmation database, and the number portability database, a call terminal and a call terminal having the call setup number requested as the current phone station number are connected. A number portability providing system using a number portability confirmation database having an exchange. The method of claim 1, The customer management database is a number portability providing system using a number portability confirmation database, characterized in that configured in the exchange. The method according to claim 1 or 2, wherein the exchanger, And a telephone station number requested for call setup from the subscriber station is configured to set a call with a destination terminal of the telephone station number described in the customer management database. The method of claim 3, wherein If the telephone station number for which call setting is requested from the subscriber station is a telephone station number not listed in the customer management database, it is determined that the telephone station number is not listed in the number portability confirmation database. A number providing system using a number portability confirmation database, characterized in that configured to set up a call with a destination terminal of the telephone station number by requesting a call setup from a corresponding network switch. The method of claim 4, wherein If the telephone station number requested to set up a call from the subscriber station is the telephone station number listed in the number portability confirmation database, the current telephone station number information corresponding to the telephone station number is obtained from the number portability database, and the information is added to the current telephone station number information. A number providing system using a number portability confirmation database, characterized in that configured to set up a call with a destination terminal having the current telephone station number by requesting a call setup from a corresponding network switch. Operation of an exchange having a number portability confirmation database for storing whether a telephone number has been moved and a number portability database for storing current telephone station number information of the number ported telephone number, and a customer management database storing subscriber information. In a way, If a call setup for a predetermined telephone station number is requested from a subscriber station, determining whether the telephone station number is listed in the customer management database; Setting up a call with a corresponding terminal if the telephone station number is listed in the customer management database; Determining that the telephone station number is not listed in the number portability confirmation database if the telephone station number is not listed in the customer management database; If the telephone station number is not listed in the number portability confirmation database, requesting to set up a call at an exchange of a network corresponding to the telephone station number to establish a call; If the telephone station number is listed in the number portability confirmation database, obtaining current telephone station number information corresponding to the telephone station number from the number portability confirmation database; Requesting a call setup to a switch of a network corresponding to the acquired current telephone station number information and connecting a call. 10. A method of driving a number portability providing system using a number portability confirmation database.