KR20110048938A - Method and system for providing caller information services using np server - Google Patents

Abstract

PURPOSE: A caller information service providing method is provided to supply a number mobility service and a caller information service at a number mobile server. CONSTITUTION: An originating MSC(Mobile Switching Center)(100) inquires a number mobile information of a called terminal to a NPDB(Number Portability Database)(200). The number mobile server inquires number mobile information about the receiving terminal. The number mobile server request a location information of a receiving terminal to a corresponding HLR(Home Location Register)(400). The home location register requests a CID(Caller's Identification) service about an originating terminal. The home register performs a call setting request including the CiD service by A receiving MSC(600).

Description

Method and system for providing caller information service using number porting server {Method and system for providing Caller Information Services using NP server}

The present invention relates to a method and a system for providing a caller information service using a number porting server. In particular, a number portability service and a caller information service are provided together in a number porting server to simplify a call processing procedure and reduce the load of a mobile communication system. The present invention relates to a method and a system for providing a caller information service.

Mobile Number Portability (MNP) technology means that the mobile subscriber changes the mobile carrier while maintaining the number used by the mobile subscriber. The subscriber can change the existing telephone number even after changing the mobile carrier. It will be possible to receive a mobile communication service while maintaining the same.

In order to implement the number portability environment, a number porting server is provided in a mobile communication network. Recently, with the activation of the number porting service, the number porting server has become the main equipment of the mobile communication core network and is operating stably.

On the other hand, Caller Information Service (CIS) is an additional service that displays any information specified by the caller (text information such as name, greeting, etc., multimedia information such as image or video) on the called terminal.

Conventional caller information service is provided through a separate caller information server (CIS) provided in the mobile communication network to store any information specified by the caller (hereinafter referred to as 'caller information'), even in a number portability environment. The same applies. Hereinafter, with reference to FIGS. 1 and 2 will be described in detail.

The number portability technology is classified into a query on release (QoR) method and an all call query (ACQ) method according to an implementation method thereof. FIG. 1 is a flowchart of a caller information service related to number portability call processing according to the prior art. to be.

As shown in FIG. 1, in the QoR scheme, an outgoing MSC 100 that receives an outgoing call request from an originating terminal (not shown) is a mobile phone number (MSISDN) of a called terminal (not shown). Send Routing Info (SRI) REQ message to HLR1 (300), which is the home location register of the mobile operator corresponding to the prefix (eg, 011, 016, 019, etc.) included in the Mobile Station International ISDN Number. When the location of the called terminal is queried (S10), the HLR1 300 queries the database and there is no information of the called terminal (Invalid Subscriber). The sri req ack [Invalid Subscriber] message is sent to the MSC 100 (S11).

The originating MSC 100 then makes a number portability query for the corresponding mobile phone number to the number portability server (NPDB; Number Portability Database) 200 (S12), and the mobile terminal information (eg, routing number) to which the destination terminal is currently subscribed. Receive number portability information including Routing Number (RN) (S13).

Subsequently, the originating MSC 100 inquires the location of the called terminal to the HLR2 400 which is the home location register of the mobile communication company corresponding to the routing number RN (Location Request) (S14). At this time, the originating MSC 100 inquires the caller information from the internal VLR DB (Visitor Location Register Database) and displays the corresponding service registration on the originating service feature indicator (OSFI) when registered in the caller information service. The location query message is included in the SRI REQ (RN, OSFI) and transmitted to the HLR2 400.

The caller information service subscription is registered in the VLR DB inside the calling MSC 100, and the calling MSC 100 queries the VLR DB to determine whether to service the calling service characteristic indicator (OSFI) according to whether the calling terminal subscribes to the service. It is displayed and transmitted to the home location registers HLR1 and HLR2. In FIG. 1, an outgoing service characteristic indicating whether a service is registered in not only an SRI REQ message (S14) destined for the HLR2 (400) from the outgoing MSC (100) but also other SRI REQ messages (S10, S12) originating from the outgoing MSC (100). Although the indicator (OSFI) is included and transmitted in the same manner, a separate description and illustration are omitted, which is also the case in FIGS. 2 to 4.

Subsequently, the HLR2 400 requests the caller information service using the SERV REQ message to the caller information server 500 according to the calling service characteristic indicator (OSFI) of the received signal (S15), and the caller information server 500 A serv req ack [display text] response message including the caller information of the requested calling terminal is transmitted to the HLR2 400 (S16).

Subsequently, the HLR2 400 transmits a Provide Routing Number (PRN) [display text] message including the caller information to be displayed to the destination MSC 600 to request call establishment (S17).

Then, the terminating MSC 600 transmits a prn ack [TLDN] message including a Temporary Local Directory Number (TLDN) for call setup to the HLR2 400 (S18), and at the HLR2 400. By sending a temporary local directory number for call setup to the originating MS 100 in a sri req ack [TLDN] message (S19), a call set up is established between the originating MS 100 and the terminating MSC 600. When the call is completed, a call carrying the caller information service is also connected between the calling terminal and the called terminal.

2 is a flowchart of a caller information service related to ACQ number portability call processing according to the prior art.

In the ACQ method, a call processing is performed by first performing a number porting query to the NPDB before processing an incoming call on an originating network or a relay network.

As shown in FIG. 2, in the ACQ scheme, when there is a call request from the originating terminal, the originating MSC 100 first makes a number portability query for the called terminal to the NPDB 200 (S20). RN) is received (S21).

Subsequently, the originating MSC 100 transmits the message including the originating service characteristic indicator (OSFI) to the HLR2 400 of the mobile communication carrier corresponding to the routing number RN (S22), and the HLR2 400 receives the received signal. According to the calling service characteristic indicator (OSFI) of the caller information server 500 requests the caller information service for the calling terminal (S23), and receives a response message containing the caller information (S24).

Subsequently, after the HLR2 400 performs the procedure necessary for call establishment with the incoming MSC 600, the call is established by transmitting the result to the originating MSC 100 (S25, S26, S27). Calls involving caller information services are also connected between terminals.

As described above, in order to provide caller information service under a number portability environment, a number porting server and a caller information server must be separately introduced into a mobile communication system, and a call with a caller information service is set up as a number ported called terminal. In order to perform a considerable number of call processing steps between the originating MSC (100), NPDB (200), the HLR (400) of the called network and the caller information server 500, the efficiency in using the mobile communication network was low.

In order to solve the above problems of the prior art, the present invention provides a number portability service and a caller information service in a number porting server, thereby simplifying a call processing procedure involving a caller information to a number ported called terminal and providing mobile communication. An object of the present invention is to provide a method and system for providing a caller information service that can reduce the load on the system.

In addition, the present invention provides a caller information service using a number porting server that is stably operated as a core equipment of a mobile communication commer network, thereby providing a more stable caller information service without establishing a separate caller information server. It is an object of the present invention to provide a method and system for providing a caller information service that enables a mobile operator to operate a mobile communication network more efficiently and stably while reducing the cost of establishing a mobile communication network.

A method of providing a caller information service using a number porting server according to an embodiment of the present invention for achieving the above object comprises the steps of: querying number porting information of a called terminal from the originating MSC to the number porting server; Querying the number porting information on the called terminal in the number porting server and requesting location information of the called terminal to a home location register corresponding to the number porting information; Requesting a caller information service for a calling terminal from the home location register to the number porting server; Providing a response message including caller information in the number porting server to the home location register; And performing a call establishment request including the caller information service from the home location register to the destination MSC.

In the method, the call is characterized by following the number portability of the ACQ scheme in the 3G network.

In addition, the method for providing a caller information display service using a number mobile server according to another embodiment of the present invention for achieving the above object, the location of the called terminal to the home location register corresponding to the mobile telephone number of the called terminal in the originating MSC; Querying and receiving an unregistered number response; Querying the number porting information of the called terminal from the originating MSC to a number porting server; Querying the number porting information on the called terminal in the number porting server and requesting location information of the called terminal to a home location register corresponding to the number porting information; Requesting caller information service for a calling terminal from the home location register to the number porting server; Providing a response message including caller information in the number porting server to the home location register; And performing a call establishment request including the caller information service from the home location register to the destination MSC.

In addition, the caller information service providing system using the number porting server of the present invention, the number porting information for the number ported terminal and the caller information for the terminal subscribed to the caller information service, routing for the number portability query A number porting server providing a number, transmitting an originating service characteristic indicator (OSFI) received from an originating MSC to a home location register, and providing the caller information in response to a caller information request from the home location register; And a home location register for making the caller information service request to the number porting server and receiving a response according to the originating service characteristic indicator (OSFI) received from the number porting server.

In addition, the system is characterized in that the number portability system of the ACQ method.

In addition, the system is characterized in that the 3G mobile communication network system.

According to the present invention, the present invention simplifies a call processing procedure involving caller information to a numbered called terminal by providing a number portability service and a caller information service in a number porting server, and reduces the load on the mobile communication system. Provided are a method and a system for providing a caller information service.

In addition, according to the present invention, the number of times of signal transmission and reception can be reduced by one time from an MSC point of view, and the same service can be implemented without increasing the number of signal transmission and reception in the NPDB without the conventional caller information server, and other mobile devices such as HLR. Since it does not affect the signal transmission / reception times of other equipments in the communication network, the call processing procedure is reduced overall compared to the prior art in both QoR and ACQ in terms of number portability. By directly sending a location query to the called terminal to the location register, the call processing procedure can be greatly reduced.

As a result, according to the present invention, by providing a caller information service using a number porting server that is stably operated as a core device of a mobile communication core network, it is possible to provide a more stable caller information service without establishing a separate caller information server. The present invention also provides a method and system for providing a caller information service that enables a mobile communication company to operate a mobile communication network more efficiently and stably while reducing the cost of establishing a mobile communication network.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention;

3 is a flowchart of a call processing method for providing a caller information service using a number porting server for a QoR method number porting call according to an embodiment of the present invention.

In order to perform the call processing of FIG. 3, the number porting server (NPDB) 200 is simultaneously provided with a caller indication information database for the calling terminal in addition to the number porting information including the routing number (RN) for the number ported terminals. do. The caller indication information database is configured to include additional conditions such as callee number, time zone, and anniversary for the caller information to be displayed.

In addition, the number porting server (NPDB) 200 has a function of performing a location request for the called terminal to the home location register (HLR) directly without passing through the switching center (MSC) (for example, the originating MSC 100). It is provided with itself.

In FIG. 3, in the QoR scheme, an outgoing MSC 100 that receives an outgoing call request from an originating terminal (not shown) is a mobile phone number (MSISDN) of a called terminal (not shown). Number of the called terminal using an SRI (Send Routing Info) REQ message to the HLR1 (300), which is the home location register of the mobile carrier corresponding to the prefix (eg, 011, 016, 019, etc.) included in the number (ID). When querying the location (S30), HLR1 (300) after querying the database does not exist the information of the destination terminal (Invalid Subscriber) transmits the message sri req ack [Invalid Subscriber] message to the originating MSC (100) (S31).

The originating MSC 100 then makes a number portability query for the corresponding mobile phone number to the number portability server (NPDB; Number Portability Database) 200 (S32). At this time, the originating MSC 100 inquires the caller information from the internal VLR DB and displays the corresponding service registration in the calling service characteristic indicator (OSFI) when registered in the caller information service and includes the number portability query message in the SRI REQ. Transfer to mobile server 200.

The number porting server 200 directly transmits a location request for a called terminal to a home location register (HLR3) 450 corresponding to the routing number (RN; routing number) inquired by the number porting information. (S33). To this end, the number porting server 200 substitutes an OPC (Originating Point Code) (local station signal point; information of the sender) with an NPDB value and routes the DPC (Destination Point Code) (counter station signal point; information of the receiver). Set to the HLR value corresponding to the number (RN). On the other hand, an originating service characteristic indicator (OSFI) indicating that the originating terminal is subscribed to the caller information service is included in the location query message sent by the number porting server 200 is transmitted to the HLR2 (400).

Subsequently, the HLR2 400 requests the caller information service back to the number porting server 200 according to the originating service characteristic indicator (OSFI) included in the location query message (S34). Request call setup to (S36).

The number porting server 200, which has requested the caller information service from the HLR2 400, queries the caller information database and transmits a response message serv req ack [display text] including the caller information to the HLR2 400 (S35).

Subsequently, the HLR2 400 transmits a PRN [display text] message including the caller information to be displayed to the terminating MSC 600 and requests a call setup (S36), and the terminating MSC 600 makes a temporary area for call setup. By sending a response message including a directory number (TLDN) to the HLR2 400 (S37), and transmitting the call setup response message from the HLR2 400 back to the originating MSC 100 (S38), the originating MSC 100 Call setup is completed between the destination MSC and the destination MSC 600, and a call involving a caller information service is connected between the calling terminal and the called terminal.

In the call processing step of FIG. 3, the caller information server is not only removed, but the overall call processing procedure is simplified as compared to the case of FIG. 1 of the caller information service method under the QoR type portability system.

4 is a flowchart of a call processing method for providing a caller information service using a number porting server for an ACQ method number porting call according to another embodiment of the present invention.

In order to perform the call processing of FIG. 4, the number porting server (NPDB) 200, as described in FIG. 3, is a caller for the calling terminal in addition to the number porting information including the routing number (RN) for the number ported terminals. The information database is provided at the same time. In addition, the number porting server (NPDB) 200 has a function of performing a location request for the called terminal to the home location register (HLR) directly without passing through the switching center (MSC) (for example, the originating MSC 100). It is provided with itself.

In Fig. 4, in the ACQ method, the originating MSC 100 first makes a number portability query for the corresponding mobile phone number to the number porting server 200 (S40), and the number porting server 200 performs the number porting information. Inquiry directly to the home location register (HLR2) 400 corresponding to the inquired routing number (RN; Routing Number) and directly sends a location query (Location Request) for the called terminal (S41). To this end, the number porting server 200 substitutes an OPC (Originating Point Code) (local station signal point; information of the sender) with an NPDB value and routes the DPC (Destination Point Code) (counter station signal point; information of the receiver). Set to the HLR value corresponding to the number (RN). On the other hand, an originating service characteristic indicator (OSFI) indicating that the originating terminal is subscribed to the caller information service is included in the location query message sent by the number porting server 200 is transmitted to the HLR2 (400).

Subsequently, the HLR2 400 requests the caller information service back to the number porting server 200 according to the originating service characteristic indicator (OSFI) included in the location query message (S42). The call is requested to set (S44).

The number port server 200 receiving the caller information service request from the HLR2 400 queries the caller information database and transmits a response message including the caller information to the HLR2 400 (S43).

3, the HLR2 400 transmits the caller information message to the destination MSC 600 to request a call setup (S44), and the destination MSC 600 makes a temporary area directory for call setup. Sending a response message including the number (TLDN) to the HLR2 (400) (S45), by sending a call setup response message from the HLR2 (400) to the originating MSC (100) again (S46), and the originating MSC (100) Call setup is completed between the destination MSC 600, and a call involving the caller information service is connected between the calling terminal and the called terminal.

In the call processing step of FIG. 4, the caller information server is not only removed but also the overall call processing procedure is simplified as compared to the case of FIG. 2 regarding the method of displaying caller information under the ACQ-type number portability system.

While the present invention has been described with reference to preferred embodiments of the present invention, various modifications, changes, and modifications will be possible without departing from the scope of the present invention as set forth in the claims of the present application. In particular, the embodiments of the present invention have been disclosed for the case of a 3G mobile communication network, but may be applied according to the same principle regardless of the type of 2G mobile communication network, other various intelligent networks.

The present invention is applicable to all cases of performing call processing in various mobile communication networks provided with number portability and caller information service.

1 is a flowchart of a caller information service associated with QoR type portability call processing according to the prior art.

2 is a flowchart of a caller information service related to ACQ number portability call processing according to the prior art.

3 is a flowchart of a caller information service associated with QoR type number portability call processing according to an embodiment of the present invention.

4 is a flowchart of a caller information service associated with ACQ number portability call processing according to an embodiment of the present invention.

Claims (6)

Querying the number porting information of the called terminal from the originating MSC to the number porting server; Querying the number porting information on the called terminal in the number porting server and requesting location information of the called terminal to a home location register corresponding to the number porting information; Requesting a caller information service for a calling terminal from the home location register to the number porting server; Providing a response message including caller information in the number porting server to the home location register; And And performing a call setup request including the caller information service from the home location register to the destination MSC. The method of claim 1, The call is characterized in that according to the number portability of the ACQ method in the 3G network, a caller information service providing method using a number porting server. Querying the location of the called terminal with a home location register corresponding to the mobile telephone number of the called terminal in an outgoing MSC and receiving an unregistered number response; Querying the number porting information of the called terminal from the originating MSC to a number porting server; Querying the number porting information on the called terminal in the number porting server and requesting location information of the called terminal to a home location register corresponding to the number porting information; Requesting a caller information service for a calling terminal from the home location register to the number porting server; Providing a response message including caller information in the number porting server to the home location register; And And performing a call setup request including the caller information service from the home location register to the destination MSC. It has number porting information for number ported terminals and caller information for terminals subscribed to caller information service, provides routing number for number portability query, and originating service characteristic indicator (OSFI) received from originating MSC. A number porting server for transmitting to a home location register and providing the caller information to the caller information service request from the home location register; And And a home location register for making the caller information service request to the number mobile server and receiving a response according to the calling service characteristic indicator (OSFI) received from the number mobile server. Information service provision system. The method of claim 4, wherein The system is characterized in that the number portability system of the ACQ method, caller information service providing system using a number portability server. The method according to claim 4 or 5, The system is a 3G mobile communication network system, characterized in that the caller information service providing system using a number porting server.

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