KR102404268B1 - Method for managing subscriber information for sms over ip and apparatus therefor - Google Patents

Abstract

The present invention relates to a subscriber information management method for SMS over IP in an IMS domain and an apparatus therefor. According to an embodiment of the present invention, the method for managing subscriber information for a user terminal registered in an IMS domain for SMS over IP in an IP-based short message gateway includes whether the subscriber information of the user terminal is stored in a database determining; obtaining information on the user terminal from a home subscriber server when the information on the user terminal is not stored in a subscriber database; and generating subscriber information of the user terminal based on the obtained user terminal information, storing the generated subscriber information of the user terminal in the database, and then providing a short message service to the user terminal .

Description

Subscriber information management method for SMS over IP and device therefor

The present invention relates to a technology for Short Messaging Service (SMS) in an IP Multimedia Subsystem (IMS) domain, and more particularly, to a method for managing subscriber information for SMS over IP in an IMS domain, and an apparatus therefor.

A service using an existing circuit-switched system is evolving into a service using a packet-switched system, and technologies for convergence of a circuit-switched service and a packet-switched service are continuously being developed.

Among these convergence technologies, there is an IP-based short message service (SMS over IP) that provides a short message service (SMS) provided based on the existing circuit-switched network through an IP-based IMS (IP multimedia subsystem). . The following patent document discloses a device and a related method supporting SMS message delivery through an IP network.

The 3rd Generation Partnership Project (3GPP), an international standard organization, provides an IP-based short message service. Suggest to be registered. When the information of the user terminal is registered in the IP-SM-GW, the IP-SM-GW acquires the additional service information of the user terminal through the HSS (Home Subscriber Server), registers it in the subscriber database, and is later sent from the user terminal or The short message sent to the user terminal is checked and processed through the self-managed subscriber database.

However, due to an internal system failure of the IP-SM-GW, a data error, an interworking failure with the HSS, etc., subscriber data recorded in the subscriber database may be lost. In this way, when data in the subscriber database managed by the IP-SM-GW is lost, a short message service cannot be provided to a user terminal in which the IMS domain is registered.

Korean Patent Publication No. 10-2007-0122168

The present invention has been proposed to solve this conventional problem, and even if data is lost in the subscriber database of IP-SM-GW, subscriber information management that provides the short message service to the user terminal by reacquiring the subscriber information of the user terminal An object of the present invention is to provide a method and an apparatus therefor.

Other objects and advantages of the present invention may be understood by the following description, and will become more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

According to a first aspect of the present invention for achieving the above object, there is provided a method for managing subscriber information for a user terminal registered in an IMS domain for SMS over IP in an IP-based short message gateway, the subscriber information of the user terminal determining whether or not is stored in the database; obtaining information on the user terminal from a home subscriber server when the information on the user terminal is not stored in a subscriber database; and generating subscriber information of the user terminal based on the obtained user terminal information, storing the generated subscriber information of the user terminal in the database, and then providing a short message service to the user terminal .

The acquiring may include transmitting an SNR message to the home subscriber server and receiving an SNA message including additional service information of the user terminal.

In the acquiring, if the IMS registration status information of the user terminal among the subscriber information of the user terminal is not stored in the subscriber database, a UDR message is additionally transmitted to the home subscriber server, and the IMSI and IMS of the user terminal A UDA message including the registration status information in , may be received from the home subscriber server.

The determining may be performed when a request for routing information is received from a message center or a short message sent from the user terminal is received.

In the obtaining step, upon receiving a request for routing information from the message center, the PUID of the user terminal may be obtained by querying the home subscriber server for a PUID corresponding to the MSISDN of the user terminal.

According to a second aspect of the present invention, there is provided an apparatus for managing subscriber information for a user terminal registered in an IMS domain for SMS over IP, comprising: a communication circuit for communicating with a message center and a home subscriber server; and a processor coupled to the communication circuit. When the short message service needs to be provided to the user terminal, the processor determines whether or not subscriber information of the user terminal is stored in a database, and when the information of the user terminal is not stored in the subscriber database, the After obtaining user terminal information, generating subscriber information of the user terminal based on the obtained user terminal information, and storing the generated subscriber information of the user terminal in the database, a short message service is provided to the user terminal provided with

According to the present invention, even if data is lost in the subscriber database managed by the IP-SM-GW, subscriber information is obtained through interworking with the HSS, and an IP-based short message service is provided to the user terminal based on the obtained subscriber information. It has the advantage of stabilizing SMS over IP.

In addition, the present invention provides a stable IP-based short text service (SMS over IP) to improve SMS over IMS quality (ie, call/receive completion rate) and increase the billing rate.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with specific details for carrying out the invention, so the present invention is described in such drawings It should not be construed as being limited only to the matters.
1 is a flowchart illustrating a procedure in which an IP-SM-GW acquires subscriber information according to a standard proposed by the 3rd Generation Partnership Project (3GPP).
FIG. 2 is a flowchart illustrating a situation in which a message transmitted from a user terminal is processed as a failure when data in a subscriber database is lost.
3 is a flowchart illustrating a situation in which a message sent from a user terminal is processed as a failure when data of a subscriber DB is lost.
4 is a diagram showing the configuration of a communication system according to an embodiment of the present invention.
5 is a flowchart illustrating a method of processing a short message by managing subscriber information for SMS over IP in a communication system according to an embodiment of the present invention.
6 is a flowchart illustrating a method of processing a short message by acquiring subscriber information for SMS over IP in a communication system according to another embodiment of the present invention.
7 is a diagram illustrating a configuration of a device included in a communication system according to an embodiment of the present invention.

The above-described objects, features, and advantages will become more apparent through the following detailed description in relation to the accompanying drawings, whereby those of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention. There will be. In addition, in the description of the present invention, if it is determined that a detailed description of a 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 according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating a procedure for an IP-SM-GW to acquire subscriber information according to a standard proposed by the 3rd Generation Partnership Project (3GPP).

If the user terminal (UE) succeeds in registering for the IMS domain by interworking with the Home Subscriber Server (HSS) (S101), the S-CSCF of the IMS evaluates the IFC (Initial Filter Criteria), and then corresponds to the third party. A registration message (Register) is transmitted to the IP-SM-GW (S103, S105).

Then, the IP-SM-GW transmits a 200 OK message to the S-CSCF in response to the registration message (S107). Then, the IP-SM-GW transmits a Subscribe message to the S-CSCF to be notified of the registration status of the user terminal (S109). The Subscribe message is a message that requests status information of the user terminal, and may include identification information of the user terminal. The S-CSCF transmits a 200 OK message in response to the Subscribe message (S111).

Upon receiving the Subscribe message, the S-CSCF transmits a Notify message including the IMS registration status of the user terminal to the IP-SM-GW (S113). In addition, when the registration state of the user terminal is changed, the S-CSCF may transmit a Noity message including the changed state to the IP-SM-GW. When the IP-SM-GW receives the Notify message from the S-CSCF, it transmits 200 OK to the S-CSCF in response thereto (S115).

According to this procedure, the IP-SM-GW recognizes that the user terminal is registered in the IMS domain, and in order to obtain subscriber information of the user terminal, an SNR message (Subscribe Notification Request), which is a message requesting additional service information of the user terminal is transmitted to the HSS, and a Subscribe Notification Answer (SNA) message including additional service information of the user terminal is received (S117, S119). Then, the IP-SM-GW generates subscriber information including the additional service information of the user terminal and the identification information of the user terminal included in the SNR message and stores it in the subscriber database (S121). Manage subscriber information by itself.

In addition, the IP-SM-GW transmits an ATM (AnyTimeModification) message according to the MAP (Mobile Application Part) protocol to the HSS to inform the HSS that it can receive the short message on behalf of the user terminal (S123). The ATM message includes identification information (eg, MSISDN) of the user terminal, an IP-SM-GW address, and information on SMS over IP availability of the user terminal. Upon receiving the ATM message, the HSS transmits an ATM response to the IP-SM-GW (S125), records that the user terminal is capable of SMS over IP in the subscriber information, and stores the IP-SM-GW address, When an SMS message sent to the user terminal is received, it can be transmitted to the corresponding IP-SM-GW.

Meanwhile, when it is detected that the additional service information of the user terminal is changed (S127), the HSS transmits a PNR (Push Notification Request) message including the changed additional service information to the IP-SM-GW (S129). Then, the IP-SM-GW updates the supplementary service information of the user terminal included in the subscriber database based on the supplementary service information included in the PNR message, and sends a PNA (Push Notification Answer) message in response to the PNR message. It is transmitted to the HSS (S131).

As described in FIG. 1, the IP-SM-GW acquires additional service information of the user terminal registered with the IMS domain through the HSS and stores it in the subscriber database. And the IP-SM-GW processes the short message based on the data stored in the subscriber database.

However, data included in the subscriber database may be lost due to a data communication error between the IP-SM-GW and the HSS or an internal error within the IP-SM-GW. When data in the subscriber database is lost in this way, IP-based short message service (SMS over IP) is not provided to user terminals registered in the IMS domain.

FIG. 2 is a flowchart illustrating a situation in which a message transmitted from a user terminal is processed as a failure when data in a subscriber database is lost.

Referring to FIG. 2 , after the user terminal normally registers with the IMS domain (S201), the user terminal generates a short message and transmits it to the called terminal. Then, the short message is routed to the IP-SM-GW via the S-CSCF (S203, S205).

Then, the IP-SM-GW transmits an Accepted message indicating that the short message transmission request has been normally received to the user terminal (S207. S209). Next, the IP-SM-GW checks whether the subscriber information of the user terminal is stored in the subscriber DB, and confirms that the information of the user terminal is not stored in the subscriber DB (S211). That is, although the user terminal has an IMS domain registered, as data loss occurs in the subscriber database of the IP-SM-GW, the subscriber information of the user terminal may not be stored in the subscriber database.

In this way, when the subscriber information of the user terminal is not stored in the subscriber database, the IP-SM-GW processes the short message sent from the user terminal as a transmission failure (S213), and a parameter indicating failure of text transmission (RP-Error) is included. The message is transmitted to the user terminal to notify the failure of the text message (S215, S217). Then, the IP-SM-GW receives a 200 OK message in response to the message from the user terminal (S219, S221).

3 is a flowchart illustrating a situation in which a message sent from a user terminal is processed as a failure when data of a subscriber DB is lost.

Referring to FIG. 3 , in a state in which the user terminal normally registers with the IMS domain (S301), the SMSC (Short Message Service Center) receives a short message received from the user terminal (S303).

Subsequently, the SMSC requests routing information of the called terminal (ie, the user terminal) to the HSS (S305), and the HSS responds to the user terminal being set to use SMS over IP, the IP-SM-GW to request routing information (S307).

Then, the IP-SM-GW checks whether or not the subscriber information of the user terminal corresponding to the called terminal is stored in the subscriber database, and confirms that the subscriber information of the user terminal is not stored in the subscriber database (S309). Although the user terminal has an IMS domain registered, as data loss occurs in the subscriber database of the IP-SM-GW, the subscriber information may not be stored in the subscriber database.

When the subscriber information of the user terminal is not stored in the subscriber database in this way, the IP-SM-GW processes the short message sent to the user terminal as an incoming failure (S311), and transmits an error message informing the SMSC of the failure of the text message reception, The text message reception failure is notified (S313).

As described above, when subscriber data managed by the IP-SM-GW is lost, a short message service to a user terminal registered in the IMS domain and capable of using SMS over IP becomes impossible.

According to an embodiment of the present invention, which will be described later, a communication system can provide a stable short message service to a user terminal even when subscriber data is lost.

4 is a diagram showing the configuration of a communication system according to an embodiment of the present invention. Referring to Figure 4, the communication system, eNodeB (110), MME (120), S-GW (130), P-GW (140), HSS (180), SMSC (190), IMS (IP Multimedia Subsystem) Includes domain. The communication system provides SMS (Short Message Service) signaling over SIP/IP (Session Initiation Protocol/Internet Protocol).

The eNodeB 110 transmits and receives a signal of the MME 120 and a control plane (Control Plane), and transmits and receives a signal of the S-GW 130 and a user plane (User Plane).

MME (Mobility Management Entity) 120, access to the network connection of the user terminal 170, allocation of network resources, tracking (tracking), paging (paging), roaming (roaming) and to support handover, etc. It is an element that performs signaling and control functions. MME 120 controls control plane functions related to subscriber and session management. The MME 120 manages a number of eNodeBs 110 and performs signaling for selection of a conventional gateway for handover to another 2G/3G network. In addition, the MME 120 performs functions such as security procedures, terminal-to-network session handling, and idle terminal location management.

The Serving-GateWay (S-GW) 130 is an element that functions as a boundary point between the radio access network and the core network and maintains a data path between the eNodeB 110 and the P-GW 140 . In addition, when the user terminal 170 moves over an area served by the eNodeB 110 , the S-GW 130 serves as a local mobility anchor point. That is, packets may be routed through the S-GW 130 for mobility within the Evolved Universal Mobile Telecommunications System (E-UTRAN). In addition, S-GW 130 is another 3GPP network (RAN defined before 3GPP Release-8, for example, UTRAN or GERAN (Global System for Mobile Communication) (GSM (Global System for Mobile Communication) / EDGE (Enhanced Data rates for Global Evolution)) Radio Access Network) and may serve as an anchor point for mobility.

A Packet Data Network GateWay (P-GW) 140 corresponds to a termination point of a data interface toward a packet data network. The P-GW 140 may support policy enforcement features, packet filtering, charging support, and the like. In addition, 3GPP networks and non-3GPP (non-3GPP) networks (eg, untrusted networks such as Interworking Wireless Local Area Networks (IWLANs), trusted networks such as Code Division Multiple Access (CDMA) networks or WiMAX)) It can serve as an anchor point for mobility management with

Home Subscriber Server (HSS) 180 is a subscriber management server containing subscription related information to support network entities handling calls/sessions. The HSS 180 transmits public user identity (PUID), Mobile Station International ISDN Number (MSISDN), International Mobile Station Identity (IMSI), additional service information subscribed by the user terminal, IMS registration status information of the user terminal, and the like to subscriber data. save the The supplementary service information includes call stop information, international call prohibition information, SMS over IMS subscription information, sun bill plan information, and the like.

The HSS 180 supports Packet Switched (PS) domain entities such as the MME 143 . It may also support Circuit Switched (CS) domain entities such as a Mobile Switching Center (MSC). The HSS 180 stores SMS over IP availability or non-availability information of the user terminal 170 in association with the IP-SM-GW 160 of the IMS domain, and the user terminal 170 is assigned as SMS over IP availability information. It may include address information of the IP-SM-GW 160 of the IMS domain that performs SMS over IP processing. When the HSS 180 has a short message received from the user terminal 170 and a routing inquiry message is received from the sending device, the IP-SM-GW to which the user terminal 170 is assigned according to the SMS over IP availability information. It replies with the address of (160).

The SMSC 190 is a server that supports the short message service, processes routing for the short message, and may generate charging data for the short message service.

Internet Protocol Multimedia Subsystem (IMS) is a domain for transmitting Internet Protocol (IP) multimedia services over UTRAN and E-UTRAN and includes CSCF 150 and IP-SM-GW 160 . A Call Session Control Function (CSCF) 150, as a call session controller, includes a P-CSCF and an S-CSCF. The P-CSCF is an entry point for the IMS domain, and the S-CSCF is a central node of the signaling plane, and performs session control for terminals 170 that initiate sessions through the IMS domain.

The IP-SM-GW 160 is an IP-based short message gateway and is an application server in charge of SMS over IP processing in the IMS domain. The IP-SM-GW 160 includes a third party registration (Register) for the communication terminal 170 received from the S-CSCF and/or a registration status received from the S-CSCF. Based on the notification (NOTIFY) message, the process of sending or receiving SMS is performed. In particular, the IP-SM-GW 160 manages a subscriber database 161 (hereinafter referred to as a 'subscriber DB'), and the subscriber DB 161 includes PUID, MSISDN, IMSI, IMS status information, and additional service information. The registered subscriber information is stored separately for each subscriber. The IP-SM-GW 160 transmits or receives a text message based on subscriber information included in the subscriber DB 161 .

Hereinafter, a method of providing a short message service by acquiring subscriber information for SMS over IP in the communication system of FIG. 4 will be described in detail.

5 is a flowchart illustrating a method of processing a short message by managing subscriber information for SMS over IP in a communication system according to an embodiment of the present invention.

Referring to FIG. 5 , the user terminal 170 normally registers the IMS domain through the same procedure as in FIG. 1 , and also registers the SMS over IP availability state as the HSS 180 ( S501 ). In this registration process, the IP-SM-GW 160 acquires the additional service information of the user terminal 170 through an SNA message and an SNA message, and the acquired additional service information of the user terminal 170, the user terminal ( 170), the PUID, IMSI, MSISDN, and IMS status can be stored in the subscriber DB.

Then, the user terminal 170 generates a short message and transmits it to the called terminal. Then, the short message is routed to the IP-SM-GW via the S-CSCF 150 (S503, S505). In addition, as the short message is transmitted within the IMS domain, the PUID of the user terminal 170 is recorded as sender information.

Then, the IP-SM-GW 160 transmits an Accepted message indicating that the short message has been normally received to the user terminal (S507. S509). Next, the IP-SM-GW 160 checks whether the subscriber information of the user terminal 170 is stored in the subscriber DB (S511). At this time, the IP-SM-GW 160 determines whether the additional service information of the user terminal is stored in the subscriber DB 161 and whether the IMS registration state information of the user terminal is stored in the subscriber DB 161. each can be checked.

Next, the IP-SM-GW 160 includes the PUID of the user terminal 170 if neither the additional service information of the user terminal 170 nor the IMS domain registration status information is stored in the subscriber DB 161, An SNR message for inquiring additional service information of the user terminal 170 is transmitted to the HSS 180 (S513).

Then, the HSS 180 checks the PUID included in the SNR message, checks the supplementary service information to which the user terminal 170 having the PUID is subscribed, and transmits the SNA message including the supplementary service information to the IP-SM -Transmits to the GW 160 (S515).

Next, the IP-SM-GW 160 checks the supplementary service information of the user terminal 170 included in the SNA message, and generates subscriber information including the supplementary service information and the PUID of the user terminal 170 , , the subscriber information is stored in the subscriber DB (S517).

Next, the IP-SM-GW 160 includes the PUID of the user terminal 170 and transmits a UDR (User Data Request) message inquiring about the IMS registration status to the HSS 180 (S519). Then, the HSS 180 checks the PUID included in the UDR message, checks the IMSI, MSISDN, and IMS registration status information of the user terminal 170 having this PUID, and UDA (User Data) including the checked information Answer) message is transmitted to the IP-SM-GW 160 (S521).

Then, the IP-SM-GW 160 checks the IMSI, MSISDN, and IMS registration status information of the user terminal 170 included in the UDA message, and has the PUID among the subscriber information included in the subscriber DB 161. By additionally recording the checked information in the subscriber information, the subscriber information is updated (S523).

Meanwhile, in the IP-SM-GW 160 , the additional service information of the user terminal 170 is not stored in the subscriber DB, but the IMSI, MSISDN and IMS registration status information of the user terminal 170 is stored in the subscriber DB 161 . If so, the SNR message is transmitted to the HSS 180 and the UDR message is not transmitted to the HSS 180 .

Next, in the IP-SM-GW 160 , when subscriber information of the user terminal 170 is newly created and stored in the subscriber DB 161 or the subscriber information of the user terminal 170 is already stored in the subscriber DB, The short message received from the user terminal 170 is transferred to the SMSC 190 (S525). In this case, the IP-SM-GW 160 may convert the short message (ie, the SIP-based short message) into a format supported by the SMSC 190 . After sending the short message to the designated called terminal, the SMSC 190 transmits an Ack message including the sending result to the IP-SM-GW 160 (S527).

Next, the IP-SM-GW 160 transmits a report message including the transmission result of the short message to the user terminal 170 (S529, S531), and receives 200 OK in response thereto (S533, S535) .

6 is a flowchart illustrating a method of processing a short message by obtaining subscriber information for SMS over IP in a communication system according to another embodiment of the present invention.

Referring to FIG. 6 , the user terminal 170 normally registers the IMS domain through the same procedure as in FIG. 1 , and also registers the SMS over IP availability state as the HSS 180 ( S601 ). In this registration process, the IP-SM-GW 160 acquires the additional service information of the user terminal 170 through an SNA message and an SNA message, and the acquired additional service information of the user terminal 170, the user terminal ( 170), the PUID, IMSI, MSISDN, and IMS status can be stored in the subscriber DB.

Then, the SMSC 190 receives the short message received from the user terminal 170 (S603). Subsequently, the SMSC 190 requests the HSS 180 for routing information of the called terminal (ie, the user terminal) (S605), and as the HSS 180 is set to use the SMS over IP, The IP-SM-GW 160 requests routing information (S607). In this case, the HSS 180 provides the MSISDN of the called terminal (ie, the user terminal) to the IP-SM-GW 160 .

Then, the IP-SM-GW 160 queries the HSS 180 for circuit-switched network routing information (eg, MSC routing information) or packet-switched network routing information (eg, MME routing information) to which the user terminal 170 is connected. Routing information for the user terminal 170 is obtained, and the PUID corresponding to the MSISDN of the user terminal 170 is additionally obtained by querying (S609). Since the PUID of the user terminal is not recorded in the text message sent from the counterpart terminal that is not registered in the IMS domain, the IP-SM-GW 160 checks the MSISDN of the called terminal (ie, the user terminal) in the text message, The PUID corresponding to this MSISDN may be additionally queried by the HSS 180 .

Next, the IP-SM-GW 160 checks whether or not subscriber information including both the additional service information of the user terminal 170 and the IMS registration state information is stored in the subscriber DB 161 (S611). The IP-SM-GW 160 includes the PUID of the user terminal 170 if subscriber information including both the additional service information of the user terminal 170 and the IMS registration state information is not stored in the subscriber DB 161. and transmits an SNR message inquiring for additional service information of the user terminal 170 to the HSS 180 (S613).

Then, the HSS 180 checks the PUID included in the SNR message, checks the supplementary service information to which the user terminal 170 having the PUID is subscribed, and transmits the SNA message including the supplementary service information to the IP-SM -Transmits to the GW 160 (S615).

Next, the IP-SM-GW 160 checks the supplementary service information of the user terminal 170 included in the SNA message, and generates subscriber information including the supplementary service information and the PUID of the user terminal 170 , , the subscriber information is stored in the subscriber DB (S617).

Next, the IP-SM-GW 160 transmits to the HSS 180 a User Data Request (UDR) message including the PUID of the user terminal 170 and inquiring about the IMS registration status (S619). Then, the HSS 180 checks the PUID included in the UDR message, checks the IMSI, MSISDN, and IMS registration status information of the user terminal 170 having this PUID, and UDA (User Data) including the checked information Answer) message is transmitted to the IP-SM-GW 160 (S621).

Then, the IP-SM-GW 160 checks the IMSI, MSISDN, and IMS registration status information of the user terminal 170 included in the UDA message, and has the PUID among the subscriber information included in the subscriber DB 161. By additionally recording the checked information in the subscriber information, the subscriber information is updated (S623).

Meanwhile, in the IP-SM-GW 160 , the additional service information of the user terminal 170 is not stored in the subscriber DB 161 , but PUID, IMSI, MSISDN and IMS registration status information of the user terminal 170 is stored in the subscriber DB. If stored in 161 , the SNR message is transmitted to the HSS 180 , and the UDR message is not transmitted to the HSS 180 .

Next, in the IP-SM-GW 160 , the subscriber information of the user terminal 170 is newly created and stored in the subscriber DB 161 , or the subscriber information of the user terminal 170 is already stored in the subscriber DB 161 . If it is, it transmits a routing information message including its own routing information to the SMSC 190 (S625). Then, the SMSC 190 transmits the short message to the IP-SM-GW 160 (S627).

Next, the IP-SM-GW 160 sends the short message to the user terminal 170 based on the routing information of the called terminal (ie, the user terminal) obtained by querying in step S609 (S629). In this case, the IP-SM-GW 160 may convert the short message to a SIP-based short message and send it.

Subsequently, the IP-SM-GW 160 may receive 200 OK in response to the sending of the short message (S631), and may also receive a report message including the sending result of the short message from the user terminal 170 ( S633).

As described above, in the communication system according to the present invention, when the IP-SM-GW 160 does not store subscriber information in the subscriber DB 161, it receives the subscriber from the HSS 180 through an SNR message and/or a UDR message. By acquiring data, newly generating subscriber information and storing it in the subscriber DB 161 , it is possible to actively cope with data loss occurring in the subscriber DB 161 .

7 is a diagram illustrating a configuration of a device included in a communication system according to an embodiment of the present invention. The device shown in FIG. 7 may be an IP-SM-GW 160 . As shown in FIG. 7 , the device includes a processor 710 , a memory 720 , and a communication circuit 730 .

The processor 710 may implement the functions, processes and/or methods proposed in the present invention. For example, the processor 710 may be implemented to perform the operation of the IP-SM-GW 160 according to the above-described embodiment of the present invention. The processor may perform the operation of the IP-SM-GW 160 disclosed in the embodiment of FIGS. 4 to 6 . The processor 710 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, data processing devices, and/or converters for converting baseband signals and radio signals to each other.

Memory 720 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and/or other storage devices.

The communication circuit 730 performs communication through an external port or communication by an RF signal. Communication circuitry 730 converts electrical signals into RF signals and vice versa, through which RF signals can communicate with communication networks, other mobile gateway devices, and communication devices. Communication circuitry 730 may utilize any of a plurality of communication standards, protocols, and technologies, including, but not limited to, other suitable communication protocols including communication protocols not yet developed at the time of filing of this application.

When the embodiment is implemented in software, the above-described method may be implemented as a module (process, function, etc.) that performs the above-described function. The module may be stored in the memory 720 and executed by the processor 710 . The memory 720 may be internal or external to the processor 710 , and may be connected to the processor 710 by various well-known means.

While this specification contains many features, such features should not be construed as limiting the scope of the invention or the claims. Also, features described in individual embodiments herein may be implemented in combination in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually, or may be implemented in appropriate combination.

Although acts are described in a particular order in the drawings, it should not be understood that the acts are performed in the particular order as shown, or that all of the described acts are performed in a continuous order, or to obtain a desired result. . Multitasking and parallel processing can be advantageous in certain circumstances. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The program components and systems described above may generally be implemented as a package in a single software product or multiple software products.

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

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

110 : eNodeB
120: MME
130: S-GW
140: P-GW
150: CSCF
160: IP-SM-GW
161: Subscriber DB
170: user terminal (UE)
180: HSS
190 : SMSC

Claims (8)

A method of managing subscriber information for a user terminal registered in an IMS domain for SMS over IP in an IP-based short message gateway, the method comprising:
determining, by the IP-based short message gateway, whether subscriber information of the user terminal is stored in a database;
obtaining, by the IP-based short message gateway, information on the user terminal from a home subscriber server when the information on the user terminal is not stored in a subscriber database; and
The IP-based short message gateway generates subscriber information of the user terminal based on the obtained user terminal information, stores the generated subscriber information of the user terminal in the database, and provides the short message service to the user terminal Subscriber information management method comprising; providing as. According to claim 1,
The obtaining step is
The subscriber information management method, characterized in that the IP-based short message gateway transmits an SNR message to the home subscriber server and receives the SNA message including the supplementary service information of the user terminal. 3. The method of claim 2,
The obtaining step is
The IP-based short message gateway additionally transmits a UDR message to the home subscriber server if the IMS registration state information of the user terminal among the subscriber information of the user terminal is not stored in the subscriber database, and the IMSI of the user terminal and receiving a UDA message including registration status information in IMS from the home subscriber server. 3. The method of claim 2,
The determining step is
The method for managing subscriber information, characterized in that the IP-based short message gateway proceeds when a request for routing information is received from a message center or a short message sent from the user terminal is received. 5. The method of claim 4,
The obtaining step is
When the IP-based short message gateway receives a request for routing information from the message center, it queries the home subscriber server for a PUID corresponding to the MSISDN of the user terminal to obtain the PUID of the user terminal. management method. An IP-based short message gateway device for managing subscriber information for a user terminal registered in an IMS domain for SMS over IP,
communication circuitry for communicating with the message center and the home subscriber server; and
a processor coupled to the communication circuit;
The processor is
When it is necessary to provide the short message service to the user terminal, it is determined whether the subscriber information of the user terminal is stored in the database, and when the information of the user terminal is not stored in the subscriber database, the home subscriber server get information,
IP-based short message gateway that generates subscriber information of the user terminal based on the obtained user terminal information, stores the generated subscriber information of the user terminal in the database, and provides a short message service to the user terminal Device. 7. The method of claim 6,
The processor is
An IP-based short message gateway device for transmitting an SNR message to the home subscriber server and receiving an SNA message including additional service information of the user terminal. 8. The method of claim 7,
The processor is
If the IMS registration status information of the user terminal among the subscriber information of the user terminal is not stored in the subscriber database, a UDR message is additionally transmitted to the home subscriber server, and the IMSI and IMS registration status information of the user terminal is included. An IP-based short message gateway device for receiving a UDA message from the home subscriber server.

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