KR20110060184A - Method for providing change of calling number in calling identification display service and home location register therefore - Google Patents

Abstract

PURPOSE: A method of providing the service of an originating number change display and an HLR therefor are provided to display the telephone number of an originator before change as originator information on the terminal of a receiver. CONSTITUTION: An originating HLR(Home Location Register) registers first trigger information in an originating MSC(Mobile Switching Center)(S303). The originating HLR receives a call initiation inquiring massage according to the first trigger information from the originating MSC which receives the originating call of an originating terminal(S305). The originating HLR transmits a connection message including the telephone number of the originating terminal before change to the originating MSC(S307).

Description

METHOD FOR PROVIDING CHANGE OF CALLING NUMBER IN CALLING IDENTIFICATION DISPLAY SERVICE AND HOME LOCATION REGISTER THEREFORE}

The present invention relates to a caller information display service, and more particularly, to a method for providing a calling number change display service for displaying a caller's information before a change of a caller who changed a phone number as caller information and a home location register for the same. It is about.

Calling Identification Display (CID) service refers to a service that displays a caller's name or telephone number on a terminal of a called subscriber before initiation of a call. Using the caller information display service, communication subscribers can know the caller's name or phone number before answering the call so that they can check who is calling. This caller information display service allows communication subscribers to not receive unwanted calls, or to identify from whom the missed call comes from.

On the other hand, communication subscribers are assigned to use a unique telephone number when subscribing to a communication service. However, if a terminal is lost or malfunctions, a new terminal may be purchased and an existing telephone number may be used as it is, but a new telephone number may be assigned and used by changing the telephone number. In recent years, service numbers (eg, 011, 016, 019) for distinguishing carriers have been consolidated into one service number (eg, 010). In particular, in order to use the 3G service while using the existing 2G service, the service number allocated from the existing 2G service should be changed to the service number for the 3G service. Therefore, a problem arises that the telephone number must be changed.

If you change the phone number in this way, there is a troublesome problem of notifying the neighbors, colleagues, etc. a new phone number one by one, in particular, workers hesitate to change the phone number due to the social relationship formed by the existing phone number, The policy of consolidating phone numbers to 010 identification numbers, which is being promoted by the United States, is being significantly delayed. To solve this problem, the telecommunications provider is providing a service that automatically connects to a new phone number when a call is made to the phone number before the change. In this process, the phone number change notification service is provided to the caller by voice notification that the caller's phone number has been changed or by text message.

However, such a conventional telephone number change notification service is limited to a service of notifying a caller who changes a telephone number to a caller who changes the telephone number. In contrast, when a subscriber who changes a telephone number makes a call, There is no way to notify the caller of his or her phone number change. Therefore, the terminal of the other party is not the existing phone number, the newly changed phone number is displayed as the caller information, the other party has a problem that refuses to receive a call because it is mistaken as a caller.

The present invention has been made to solve the above problems, the subscriber before changing the phone number to change the phone number in the process of making the call so that the subscriber's phone number before the change is displayed on the other terminal as caller information, An object of the present invention is to provide a calling number change indication service providing method and a home location register for the same.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention for achieving the above object, a method for providing a calling number change indication service in the calling party's home location register of the communication network so that the telephone number before the change of the caller who changed the phone number is displayed on the called party; Registering, by the calling home location register, first trigger information to the calling exchange that causes all outgoing calls of the calling terminal to pass through the calling home location register when the location of the calling terminal is registered; Receiving, by the originating home location register, a call initiation query message according to the first trigger information from the originating exchange that receives the originating call of the originating terminal; And sending, by the calling party home location register, the connection message including the telephone number before the change of the calling terminal to the calling party exchange.

According to another aspect of the present invention for achieving the above object, the information of the calling terminal to provide a calling number change indication service for displaying the telephone number before the change of the calling terminal that changed the telephone number is displayed on the called party; A home location register, which performs a location registration process for the originating terminal at the request of the exchange, and registers the first trigger information to the exchange so that all outgoing calls of the originating terminal pass through the home location register. Processing unit; And when the call initiation query message according to the first trigger information is received from the exchange receiving the originating call of the originating terminal, in response thereto, transmits a connection message including the telephone number before the change of the originating terminal to the exchange. It includes; call initiation query processing unit.

The present invention as described above, by displaying the phone number before the change of the caller who changed the phone number on the called party's terminal as the caller information, the caller changes the phone number after the caller does not notify the acquaintances to the acquaintances, This allows you to see who the caller is. Accordingly, 2G subscribers, such as 011 and 016, can be subscribed to the 010 number to facilitate the integration of the mobile phone identification number.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a schematic configuration of a communication system for a call number change indication service according to an embodiment of the present invention.

As shown in FIG. 1, the communication system according to the present embodiment includes mobile terminals 110 and 120, exchangers 130 and 140, and home location registers 150 and 160.

In FIG. 1, the mobile terminal 110 is described as a calling terminal that transmits a call as a terminal of a subscriber whose telephone number is changed, and the mobile terminal 120 is described as a called terminal that receives a call originating from the calling terminal. In addition, the exchange 130 will be described as the calling side exchange in the region where the calling terminal 110 is located, and the exchange 140 will be described as the called side exchange in the region where the called terminal 120 is located. In addition, the home location register is established for each station number of the mobile phone number. The home location register 150 is described as a calling party home location register that receives the subscriber profile of the calling terminal, and the home location register 160 is a subscriber profile of the called terminal. It will be described with the called party's home location register that accepts the message.

The mobile terminals 110 and 120 are portable mobile communication terminals for providing a voice call and / or a video call while moving, and may be applied without limitation as long as the terminal can display the caller's telephone number included in the incoming call as caller information. . Preferably, the mobile terminal (110, 120) stores the address book, search for the corresponding name in the address book using the caller phone number included in the incoming call and displays the phone number and name as caller information. If there is no name corresponding to the address book, only the caller's telephone number is displayed as caller information.

The mobile terminals 110 and 120 are connected to the exchanges 130 and 140 through a wireless access network. The radio access network includes a base station and a base station controller. The base station performs radio signal transmission and reception, radio channel encoding and decoding, baseband signal processing, diversity (space), radio resource management, and self maintenance. The base station controller performs functions such as matching with the base station, inter-cell handover processing, call control, and the like, and one base station controller controls several base stations.

In the present invention, when a call is originated from the calling terminal 110, the telephone number before the change, rather than the telephone number after the caller's change, is displayed on the called terminal 120 as the calling party's telephone number. The caller may deactivate the caller ID change display service so that the telephone number after the change, that is, the current telephone number, is displayed as the caller's phone number on the destination terminal 120. At this time, the caller inputs only a feature code for deactivating the service according to the present invention to the calling terminal 110 and sends a call. The caller may also switch back to the active state while deactivating the service according to the present invention. As with deactivating a service, a call is made by entering only a function code for activating the service.

In addition, the caller may temporarily activate the service according to the present invention while deactivating the service according to the present invention. At this time, the caller sends a call by inputting a function code and a called party number together with the calling terminal 110 to temporarily activate the service according to the present invention.

The exchanges 130 and 140 provide an interface function with a wireless access network, and provide a function of interchanging between mobile communication subscribers and an exchange function (interworking function) between a mobile communication subscriber and a fixed network subscriber such as PSTN and ISDN. The exchanges 130 and 140 check the incoming information in association with the home location registers 150 and 160 to process the incoming call.

In particular, when the originating exchange 130 receives a location registration request from the originating terminal 110, in performing the location registration to the originating home location register 150, all outgoing calls are originating home location register 150. The trigger information is transmitted from the calling home location register 150 and stored in the visitor location register (VLR).

When the call is originated from the originating terminal 110, the originating exchange 130 sends a call initiation query (Initial DP) to the originating home location register 150 rather than the called home location register 160 according to the trigger information. In response to this, a Connet message including a caller's before-change phone number is received, and an outgoing call is received using the before-change phone number.

In addition, when the originating exchange 130 receives an outgoing call including a function code for deactivating a service according to the present invention from the originating terminal 110, the originating exchange 130 may make a call initiation query including the function code according to the trigger information. And transmits to the calling home location register 150, and deletes the trigger information for sending all calls to the calling home location register 150 by an instruction of the calling home location register 150 in response thereto. Register general trigger information. Here, the general trigger information is information so that only the outgoing call including the function code passes through the calling home location register 150, and the remaining outgoing calls do not go through the calling home location register 150.

In addition, when the originating exchange 130 receives an outgoing call including a function code for temporarily activating a service according to the present invention and a called party's telephone number from the originating terminal 110, the temporary activation function according to the general trigger information. Transmits a call initiation query including a code to the calling home location register 150 and receives a Connect message including the caller's unchanged telephone number from the calling home location register 150 in response. By using the phone number before the change, the incoming call is processed.

In addition, when the originating exchange 130 receives an outgoing call including a function code for activating the service according to the present invention from the originating terminal 110, a call initiation including the active function code is initiated according to the general trigger information. Sends the query to the calling home location register 150 and, in response, deletes the general trigger information according to the indication of the calling home location register 150, and instead calls all calls to the calling home location register ( 150 to register the trigger information to pass through.

The home location registers 150 and 160 store and manage subscriber information and additional service information. In particular, the calling party home location register 150 is registered with the customer information system before and after the change of the telephone number of the caller who changed the phone number in conjunction with the customer information system, when the location registration request from the calling terminal 110, When the originating terminal 110 transmits a call to the originating exchange 130 through all of the originating call, and the originating terminal 110 transmits the call, the originating exchange 130 transmits a call initiation query according to the trigger information. Sends a connection message that includes the caller's pre-change phone number.

In addition, when the originating home location register 150 receives a call initiation query including the function code for deactivating the service according to the present invention from the originating exchange 130, all of the stored at the originating exchange 130 are stored. Delete trigger information to route the call to originating home location register 150 and register general trigger information instead. Here, the general trigger information is information so that only the outgoing call including the function code passes through the calling home location register 150, and the remaining outgoing calls do not go through the calling home location register 150.

In addition, when the originating home location register 150 receives a call initiation query from the originating exchange 130 that includes a function code for temporarily activating the service according to the present invention, the calling party's pre-change telephone call is answered. A Connet message including a number is transmitted to the calling exchange 130.

In addition, when the originating home location register 150 receives a call initiation query including a function code for activating a service according to the present invention from the originating exchange 130, the general information stored in the originating exchange 130 is stored. Delete trigger information and register trigger information to route all calls to originating home location register 150 instead.

Meanwhile, in the above description, the caller's telephone number is changed without considering the called party's telephone number. However, according to the embodiment, the caller's telephone number may be determined in consideration of the called party's telephone number. That is, when an emergency call such as 112 or 119 is called, the called party may need to confirm the exact location of the caller. The phone number before the change of the caller is displayed as the calling party number, so that the called party may not be able to confirm the caller's exact location. have. Therefore, in order to prevent such a problem, if the emergency call number such as 112 and 119 is the called party's number, the calling party's home location register 130 sends a Connect message including the current phone number instead of the previous number. Lower to the side exchange 130. To this end, the calling party's home location register 130 has a number change exception called party number table.

Further, as another embodiment, when the called party's telephone number of the calling call is not an exception number but is not a mobile phone number (ie, 01x type number), the calling party's home location register 130 is not the calling party's change phone number. A connection message including the current telephone number is sent down to the calling side exchange 130, so that the called party's current telephone number is displayed on the called side. In the case of a wired terminal, the caller's telephone number display function is not many and additionally, a call that requires additional charging requires a correct caller's telephone number to be charged normally (e.g., 1588 service). Since the call is not the mobile phone number, the calling party home location register 130 includes the current phone number instead of the caller's previous change number if the called party's telephone number of the calling call is not a mobile phone number. A connection message is sent down to the calling exchange 130.

Hereinafter, an embodiment of a calling number change indication service according to the present invention will be described in detail with reference to FIGS. 2 to 7.

2 is a signal flow diagram illustrating a procedure for registering information of a calling number change indication service subscriber in a communication network according to an embodiment of the present invention.

As shown in FIG. 2, when the mobile subscriber subscribes to the calling number change indication service after changing the telephone number, the telephone number change information and the service subscription information of the subscriber are registered in the customer information system. The service of the present invention is registered as an additional service in a home location register that receives the subscriber's phone number, that is, the calling party's home location register 150, and the phone number before the change is registered together with the current phone number (S201).

Subsequently, when a subscriber who changes a phone number needs to register a location such as powering on the mobile terminal 110 (ie, calling terminal) or moving a location, the calling terminal 101 is connected to a wireless access network. The location registration request is made to the calling side exchange 130 through (S203).

Upon receiving the location registration request, the calling party exchange 130 requests a location registration from the calling home location register 150 that accommodates the calling terminal 110 (S205). Receiving the location registration request, the calling party home location register 150 updates the location information of the calling terminal 110 and confirms additional service information of the caller, confirming that the subscriber subscribes to the calling number change indication service according to the present invention. A subscriber profile including trigger information (eg, O-CSI = 2000 according to the CAMEL protocol) to all the originating calls of the caller via the originating home location register 150 to the originating exchange 130. (S207).

Receiving the subscriber profile from the calling party home location register 150, the calling party exchange 130 registers the received subscriber profile in the visited location register and transmits a location registration response to the calling terminal 110 (S209). .

In general, when an originating call receives an outgoing call, the originating exchange does not connect to the originating home location register, but queries the destination location information for the incoming processing of the outgoing call to the called party's home location register that contains the called party's telephone number. According to the received location information received according to the incoming call processing, as described above with reference to Figure 2, when the call originated from the calling terminal 110 subscribed to the calling number change indication service, the calling side exchange 130 Before querying the called party's home location register 160 with the called party's home location register 160, it connects to the calling party's home location register 150 and queries the call initiation.

3 is a signal flow diagram illustrating a method for providing a calling number change indication service according to an embodiment of the present invention.

As shown in FIG. 3, when a call is sent from the calling terminal 110 having changed the telephone number to the called terminal 120, the calling call is transmitted to the calling side exchange 130 through the wireless access network (S301). At this time, the outgoing call includes the calling party number and the called party number.

The originating exchange 130 receiving the originating call verifies the calling party's subscriber profile at the visited location register. However, as described with reference to FIG. 2, trigger information (eg, O-CSI = 2000) is necessarily registered in the subscriber profile of the caller whose telephone number is changed via the calling party home location register 150 (S303). ).

Accordingly, the calling exchange 130 transmits a call initiation query message (Initial DP) including the calling party number and the called party number to the calling party home location register 150 according to the trigger information (S305). The calling party's home location register 150 checks the calling party's subscriber profile based on the call initiation query message to confirm the subscription of the calling number change indication service. In operation S307, a connection message including a connection message is transmitted to the calling side exchange 130.

The originating exchange 130 receiving the connection message transmits the called location query message for the incoming call processing of the outgoing call to the called party home location register 160 accommodating the called party's telephone number (S309). Then, the called party home location register 160 checks the location registration information of the called terminal 120 based on the called phone number and transmits a routing information request message to the called party exchange 140 (S311).

The destination exchange 140 assigns a routing number and transmits a routing information response message to the called party home location register 160 (S313). The called party home location register 160 receiving the routing information response message transmits the called location response message including the routing number to the calling party exchange 130 (S315).

The originating exchange 130, which has received the called location response message, proceeds with a call setup procedure based on the routing information. In this case, the originating exchange 130 performs the connection received from the originating home location register 130 in step S307. The call setup procedure is performed using the phone number before the change of the sender included in the message (S317).

Specifically, the originating exchange 130 transmits an initial address message (IAM) for the call connection to the destination exchange 140, wherein the initial address message is the telephone number of the caller as the caller's telephone number. Included and sent.

When such a call setup procedure is performed, the called side exchange 140 performs the incoming call processing to the called terminal 120, wherein the called terminal using the caller's unchanged telephone number included in the initial address message. In step 120, the incoming call of the outgoing call is performed (S319). Accordingly, the incoming terminal 120 rings and the incoming telephone number is displayed as the caller's telephone number instead of the changed telephone number as the caller's telephone number (S321).

In the caller ID change display service according to the present invention as described above, the destination terminal 120 displays the caller's change number before the caller, so that the caller can check who the caller is through the change number.

2 and 3, when the caller makes a call after subscribing to the caller ID change indication service according to the present invention, the caller's previous telephone number is displayed to the called party. In other words, after signing up for the first service, the phone number before the change is automatically displayed. However, if necessary, the telephone number currently used, not the telephone number before the change, that is, the telephone number after the change, needs to be displayed to the called party.

4 is a signal flow diagram illustrating a method for deactivating a calling number change indication service according to an embodiment of the present invention.

Referring to FIG. 4, first, a caller inputs a feature code for deactivating a calling number change indication service to a calling terminal 110 and inputs a call button. Then, the originating call including the inactive function code from the originating terminal 110 is transmitted to the originating exchange 130 (S401).

The originating exchange 130 receiving the originating call verifies the calling party's subscriber profile at the visited location register. However, as described with reference to FIG. 2, trigger information (eg, O-CSI = 2000) is registered in the subscriber profile of the caller whose telephone number is changed through the calling home location register 150 (S403). ).

Accordingly, the originating exchange 130 transmits a call initiation query message (Initial DP) including the inactive function code to the originating home location register 150 according to the trigger information (S405). Upon receiving the call initiation query message, the calling party home location register 150 confirms that the caller is requesting deactivation of the calling number change indication service based on the inactive function code included in the call initiation inquiry message, and first requests a resource connection request. (connect to resource) message to the calling side exchange 130 to instruct the announcement announcement ready to send (S407), then the calling party home location register 150 sends a announcement announcement play message (play announcement) message to the calling party The transfer to the exchange 130 (S409).

The originating exchange 130 receiving the resource connection request and the announcement broadcast transmission request message transmits an announcement to the originating terminal 110 informing that the calling number change indication service has been deactivated (S411).

On the other hand, since the caller ID change indication service is deactivated, the call originating from the caller terminal 110 does not necessarily need to pass through the caller's home location register 150. Accordingly, the calling party home location register 150 sends a delete subscriber message (DSD: Delete Subscriber Data) for deleting trigger information (eg, O-CSI = 2000) set in the calling party exchange 130. (S413).

The originating home location register 150 transmits an insert instruction message (ISD: Insert Subscriber Data) for registering general trigger information (eg, O-CSI = 1000) to the originating exchange 130 (S415). . Thus, originating exchange 130 writes general trigger information into the subscriber's subscriber profile stored at the visited location register. Here, the general trigger information is information to be routed to the calling party home location register 150 only when an outgoing call including a special code is received. Therefore, when a typical call is originated at the originating terminal 110, the originating call does not go through the originating home location register 150, and the originating side exchange 130 immediately reaches the called party home location register 160. Query the location information and process the outgoing call according to the received location information.

As described above with reference to FIG. 4, the subscriber who has subscribed to the calling number change indication service does not need to call the customer center or deactivate the service by accessing the relevant menu on the Internet homepage. Simply enter the inactive function code on your terminal and simply press the call button.

Meanwhile, in the exemplary embodiment referring to FIG. 4, a case in which a subscriber subscribed to the calling number change indication service has deactivated the calling number change indication service has been described. Similarly, the service may be reactivated after the service is deactivated. As described with reference to FIG. 4, the caller inputs a feature code for activating the calling number change indication service to the calling terminal 110 and inputs a call button. The calling home location register 150 sets the calling party's calling number change indication service to be activated, deletes general trigger information (eg, O-CSI = 1000) set in the calling exchange 130, and instead calls all callings. Register trigger information (eg, O-CSI = 2000) that causes the call to pass through originating home location register 150.

In the embodiment with reference to FIG. 4 described above, a case in which a subscriber subscribed to a caller ID change indication service has deactivated the caller ID change indication service, is required to temporarily use the caller ID change indication service after deactivating the service. There is a time.

5 is a signal flow diagram illustrating a method for temporarily activating a calling number change indication service according to an embodiment of the present invention.

As described with reference to FIG. 4, a caller who has disabled the calling number change indication service, as shown in FIG. 5, sends a temporary active function code and a called party number to temporarily activate the calling number change indication service one-time. Enter at 110 and enter the call button. Then, the outgoing call including the temporary active function code and the called party's telephone number from the calling terminal 110 is transmitted to the calling side exchange 130 (S501).

The originating exchange 130 receiving the originating call checks the subscriber's subscriber profile at the visited location register. However, as described with reference to FIG. 4, general trigger information (eg, O-CSI = 1000) is registered in the caller's subscriber profile (S503). The general trigger information is such that the originating call passes through the originating home location register 150 only when the originating call includes the function code, and thus, the originating exchange 130 includes the originating call and thus the originating call. The call origination query message (Initial DP) including the temporary active function code and the called party's phone number is transmitted to the side home location register 150 (S505).

The originating home location register 150 receiving the call initiation query message requests that the caller temporarily activate the calling number change indication service based on the temporary activation function code of the calling number change indication service included in the call initiation query message. Check and transmit a connect message including the caller's change before the phone number to the calling side exchange 130 (S507).

The originating exchange 130 receiving the connection message performs the incoming call to the destination terminal 120 using the caller's previous telephone number included in the connection message as the calling party's phone number (S509). This process is the same as that of steps S309 to S321 described with reference to FIG. 3. Accordingly, the caller's caller ID change indication service is deactivated, but the caller temporarily activates the caller ID change indication service one-time temporarily so that the caller's before-change phone number is displayed as the caller's information on the called terminal 120. When the caller makes a normal call, the called party displays the phone number after the change of the caller as the caller's information.

6 is a flowchart illustrating an operation of a calling home location register according to an embodiment of the present invention.

As shown in FIG. 6, the originating home location register 150 receives a call initiation query message from the originating exchange 130 (S601). When the originating home location register 150 receives the call initiation query message, the originating home location register 150 confirms the caller's additional service subscription information by using the caller identification information included in the call initiation query message. Check (S603). Here, the calling party home location register 150 checks the calling party number change indication service flag information and the temporary activation function code of the calling number change indication service in the call initiation query message.

If the caller ID change indication service of the caller is not activated, the calling party home location register 150 performs a general call processing procedure (S609). For example, when the call initiation query message includes the function code for the intelligent network service, the calling home location register 150 transmits a connection message including the routing number to the calling network to the calling exchange 130, or If no function code is included, the sender (130) transmits a connect message including the current caller's telephone number, that is, the telephone number after the change, to the calling exchange 130 so that the normal incoming processing of the outgoing call is performed.

On the other hand, when the caller's caller ID change indication service is activated, the calling party home location register 150 checks whether the caller ID change indication service is in an exception processing state before providing the caller ID change indication service (S605). . The exception handling state here is when the caller's two-phone service is activated, or the caller is calling to listen to the voice mailbox, or the called party's telephone number falls under the exception of the calling number change indication.

If the caller ID change indication service is in the exception handling state, the calling party home location register 150 performs the general call processing procedure as described above (S609). On the other hand, when the caller ID change indication service is not in the exception handling state, the calling party home location register 150 transmits the connection message including the calling party's change number to the calling party exchange 130 to the calling party exchange 130. In), the outgoing call is handled using the phone number before the change (S607).

7 is a flowchart illustrating the operation of the calling home location register according to another embodiment of the present invention. In FIG. 7, the same reference numerals as those in FIG. 6 are the same, and description thereof is omitted here.

Unlike the embodiment referring to FIG. 6, in the present embodiment with reference to FIG. 7, after checking whether the calling number change indication service is in an exception handling state, the calling party home location register 150 determines whether the called party number is a mobile phone number. Check (S707), and only if the called party's phone number is a mobile phone number, and transmits a connection message including the caller's change phone number to the calling side exchange 130 (S607). In case of wired terminal, caller's phone number display function is not many and additionally, calls that incur additional charges require accurate caller's phone number to be charged normally. Since it is not a mobile phone number (e.g., 1588 service, etc.), the calling party's home location register 130 includes the current phone number, not the caller's prior change number, if the called party's phone number of the outgoing call is not a mobile phone number. The Connect message is sent down to the source exchange 130.

8 is a block diagram showing the configuration of the originating home location register 150 according to an embodiment of the present invention.

As shown in FIG. 8, the calling party home location register 150 according to the present embodiment includes an additional service register 810, a subscriber database (DB) 830, a location registration processor 850, and a call initiation query processor. 870.

The additional service registration unit 810 is connected to the customer information system of the telecommunication company and receives the additional service information of the mobile communication subscriber from the customer information system and registers it in the subscriber DB 830. In this embodiment, the additional service registration unit 810 receives the caller ID change indication service subscription information of the mobile communication subscriber from the customer information system and registers it in the subscriber DB 830. Here, the calling number change indication service subscription information is the subscriber's identification number, the terminal identification number, the telephone number before the change, and the like.

The subscriber database 830 stores and manages a subscriber profile of the mobile communication subscriber managed by the home location register 150. Here, the subscriber profile includes location information of the subscriber and supplementary service subscription information of the subscriber.

When the location registration processing unit 850 receives a location registration request from the exchange 130 as the location registration is performed in the mobile terminal 110, the location registration processing unit 850 registers the location information of the mobile terminal 110 in the subscriber database 830. And lowers the subscriber profile to the exchange 130. In the present embodiment, the location registration processing unit 850 registers the location information of the mobile terminal 110 and checks the subscriber's calling number change indication service subscription information in the subscriber database 830, and subscribes to the service. If present, it inserts trigger information in the subscriber profile that causes all outgoing calls to pass through home location register 150.

Therefore, when a call is originated from the mobile terminal 110 subscribed to the calling number change indication service, the calling side exchange 130 receives the calling side home location register 150 before it makes a call to the called home location register 160. Initiate a call initiation query.

When the call originates from the mobile terminal 110 subscribed to the calling number change indication service, the call initiation query processing unit 870 receives the call initiation query from the originating exchange 130 and identifies the caller included in the call initiation query. Using the information, the subscriber database 830 confirms whether the subscriber subscribes to the calling number change indication service. When the caller is subscribed to the calling number change indication service, the call initiation query processing unit 870 searches for the telephone number before the change and transmits a connection message including the retrieved telephone number to the calling side exchange 130. .

On the other hand, the call initiation query processing unit 870, when the call initiation query received from the originating exchange 130 includes the inactive function code of the call number change indication service, the caller's call number is changed in the subscriber database 830. When the registration service is registered as inactive and a call initiation query for the same originator is received from the originating exchange 130, a connection message including the current telephone number, that is, the telephone number after the change, is sent to the originating exchange 130. To send).

At this time, the call initiation query processing unit 870 deletes the trigger information for all outgoing calls stored in the calling party subscriber profile of the calling side exchange 130 via the calling side home location register 150, and performs general trigger information. Register instead. Here, the general trigger information is information such that only the outgoing call including the function code passes through the calling party home location register 150.

In addition, the call initiation query processing unit 870, if the call initiation query received from the originating exchange 130 includes the temporary activation function code of the call number change indication service, the caller's call number in the subscriber database 830. Even if the change indication service is registered as inactive, a connection message including the caller's before-change phone number is transmitted to the calling side exchange 130 so that the calling number change indication service can be used once.

In addition, the call initiation query processing unit 870 changes the caller's calling number in the subscriber database 830 when the call initiation query received from the originating exchange 130 includes the active function code of the calling number change indication service. The registration service is set to register as active, and when a call initiation query for the same originator is received from the originating exchange 130, a connection message including the telephone number before the change is sent to the originating exchange 130.

At this time, the call initiation query processing unit 870 deletes the general trigger information stored in the calling party subscriber profile of the calling side exchange 130, and triggers all outgoing calls to pass through the calling side home location register 150. Register the information instead.

On the other hand, the call initiation query processing unit 870 may not perform the outgoing number change indication process in providing the outgoing number change indication service. For example, the caller's two-phone service is activated, or the caller is calling to listen to a voice mailbox, or the called party's telephone number is an exception to the caller ID change indication. In addition, the call initiation query processing unit 870 may transmit a connection message including the caller's unchanged phone number to the calling exchange 130 only when the called party's phone number is a mobile phone number.

Although the above embodiments have been described with reference to a mobile communication network, it is clear that the same may be applied to a communication network providing caller information display services such as public networks and Internet telephones.

The method of the present invention as described above may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

1 is a view showing a schematic configuration of a communication system for a call number change indication service according to an embodiment of the present invention.

2 is a signal flow diagram illustrating a procedure for registering information of a calling number change indication service subscriber in a communication network according to an embodiment of the present invention.

3 is a signal flow diagram illustrating a method for providing a calling number change indication service according to an embodiment of the present invention.

4 is a signal flow diagram illustrating a method for deactivating a calling number change indication service according to an embodiment of the present invention.

5 is a signal flow diagram illustrating a temporary activation method of a calling number change indication service according to an embodiment of the present invention.

6 is a flowchart illustrating an operation of a calling home location register according to an embodiment of the present invention.

7 is a flowchart illustrating the operation of the calling home location register according to another embodiment of the present invention.

8 is a block diagram showing the configuration of a calling home location register according to an embodiment of the present invention.

Claims (13)

A method for providing a calling number change indication service in a calling party's home location register of a communication network to display a calling party's telephone number before a change is displayed on the called party. Registering, by the calling home location register, first trigger information to the calling exchange that causes all outgoing calls of the calling terminal to pass through the calling home location register when the location of the calling terminal is registered; Receiving, by the originating home location register, a call initiation query message according to the first trigger information from the originating exchange that receives the originating call of the originating terminal; And And sending, by the calling party home location register, a connection message including the telephone number before the change of the calling terminal to the calling party switch. The method of claim 1, Receiving, by the originating home location register, a call initiation query message including the service inactivation function code from the originating exchange as the call including the service inactivation function code is transmitted from the originating terminal; And And setting, by the calling party home location register, deactivating the calling number change indication service of the calling terminal based on the service deactivation function code. The method of claim 2, And requesting, from the calling party's home location register, to send the service deactivation registration announcement to the calling terminal to the calling exchange. The method of claim 2, Sending, by the calling home location register, a deletion request message of the registered first trigger information to the calling exchange; And And sending, by the originating home location register, a registration request message of second trigger information in place of the first trigger information to the calling exchange. The method according to any one of claims 2 to 4, Receiving, by the originating home location register, a call initiation query message including the temporary activation function code from the originating exchange as the call including the service temporary activation function code is transmitted from the originating terminal; And Sending, by the calling party home location register, a connection message including the telephone number before the change of the calling terminal to the calling party exchange based on the temporary active function code; How to Provide Marking Services. The method of claim 2, Receiving, by the originating home location register, a call initiation query message including the service activation function code from the calling exchange as the call including the service activation function code is transmitted from the calling terminal; And And setting, by the calling party's home location register, activating a calling number change indication service of the calling terminal based on the service activation function code. The method of claim 1, After receiving the call initiation query message, Checking, by the calling party's home location register, whether a called party number included in the call initiation query message is a mobile number; And Sending, by the calling party's home location register, a connection message including the current phone number of the calling terminal to the calling party's exchange when the called party's phone number is not a mobile phone number; How to Provide. A home location register containing information of the calling terminal, which provides a calling number change indicating service for displaying the calling number before the change of the calling terminal whose telephone number is changed, on the called party, A location registration processing unit which performs location registration processing for the originating terminal at the request of the exchange, and registers first trigger information to the exchange so that all outgoing calls of the originating terminal pass through the home location register; And Receiving a call initiation query message according to the first trigger information from the exchange receiving the originating call of the originating terminal, in response to the connection message including the telephone number before the change of the originating terminal is transmitted to the exchange. Home location register comprising a; call initiation query processing unit. The method of claim 8, The call initiation query processing unit, As the call including the service deactivation function code is transmitted from the originating terminal, a call initiation query message including the service deactivation function code is received from the exchange, and the calling number of the calling terminal is changed based on the service deactivation function code. Home location register, characterized by disabling the display service. The method of claim 9, The call initiation query processing unit, And requesting the exchange to send a service inactivity registration announcement to the calling terminal. The method of claim 9, The call initiation query processing unit, And deleting the first trigger information registered in the exchange and registering second trigger information in place of the first trigger information in the exchange. The method according to any one of claims 9 to 11, The call initiation query processing unit, As the call including the service temporary activation function code is transmitted from the originating terminal, when the call initiation query message including the temporary activation function code is received from the exchange, before the change of the originating terminal is based on the temporary activation function code. And send a connection message containing a telephone number to said exchange. The method of claim 8, The call initiation query processing unit, And when the called party's telephone number included in the call initiation query message is not a mobile telephone number, sending a connection message including the current telephone number of the calling terminal to the switch.

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