KR20180095322A - Method for interworking with home subscriber server for sms over ip and apparatus therefor - Google Patents

Abstract

A method of interworking with a subscriber management server for SMS over IP in an IMS domain and an apparatus therefor, and a method for interworking with an subscriber management server in an application for processing an SMS message of an IMS domain according to an aspect, Periodically receiving a registration message including a validity time for a user terminal; And determining whether the subscriber management server is interworked based on the valid time included in the received registration message.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for interworking with a subscriber management server for SMS over IP,

The present invention relates to a technology for SMS (Short Messaging Service) in an IMS domain, and more particularly, to a method and an apparatus for interworking with an HSS (Home Subscriber Server) for SMS over IP in an IMS domain.

With the spread of Long Term Evolution (LTE) communication network, SMS messages are transmitted and received via LTE communication network as well as sending and receiving short message service (SMS) messages through 3G communication network. IP-SM-GW (Internet Protocol-Short Message-GateWay) of the IP Multimedia Subsystem (IMS) domain is used for sending and receiving SMS messages through the LTE communication network. The IP-SM-GW is an application server that performs an originating or an incoming call process of an SMS in cooperation with an SSSCF (Serving Call Session Control Function) and an HSS (Home Subscriber Server) of an IMS domain.

The interworking of these IP-SM-GW, S-CSCF and HSS is defined in 3GPP standard 24.341. According to this standard, when receiving the SIP NOTIFY message from the S-CSCF, the IP-SM-GW informs the HSS only when the status of the user terminal (UE) is changed, . In this standard, the IP-SM-GW must send a SUBSCRIBE message to the S-CSCF in order to periodically receive the NOTIFY message from the S-CSCF. This causes the load on the IP-SM-GW and the S-CSCF . Also, when using the NOTIFY message, the NOTIFY message may be lost in the process of transmitting the NOTIFY message from the S-CSCF to the IP-SM-GW, and a countermeasure for the NOTIFY message is not defined. If the NOTIFY message transmitted according to the state change is lost, the IP-SM-GW does not recognize the change of the state of the user terminal (UE), and thus information on the availability or non-availability of SMS over IP of the user terminal So that an error may occur in the process of sending or receiving an SMS.

The present invention proposes a method and an apparatus for reducing the number of messages transmitted / received in the IMS domain in linking SMS availability information of the user terminal to the HSS. .

It is another object of the present invention to provide a method and apparatus for preventing missing of reflection of status information of a user terminal in linking SMS availability information of a user terminal with HSS.

A method for interworking with a subscriber management server in an application for processing an SMS message of an IMS domain according to an aspect includes periodically receiving a registration message including a valid time for a user terminal from a call session controller; And determining whether the subscriber management server is interworked based on the valid time included in the received registration message.

The step of determining whether to perform the interworking may include transmitting the SMS reception availability information of the user terminal to the subscriber management server when the registration message is received for the first time and the effective time is greater than zero.

The step of determining whether or not to perform the interworking may include transmitting SMS incapability information of the user terminal to the subscriber management server when the valid time included in the registration message is zero.

The step of determining whether the interworking operation is interlocked may include transmitting SMS incapability information of the user terminal to the subscriber management server when the valid time included in the last received registration message has elapsed.

A method for interworking with a subscriber management server in an application for processing an SMS message of an IMS domain according to another aspect includes receiving a registration message for a user terminal from a call session controller; Sending a message to the call session controller requesting status information for the user terminal; Receiving a notification message including active information from the call session controller as state information of the user terminal and transmitting SMS reception availability information of the user terminal to the subscriber management server; And receiving a notification message including release information as status information of the user terminal from the call session controller and transmitting the SMS disable information of the user terminal to the subscriber management server.

The method may further include receiving, from the call session controller, a registration message having a validity period of 0 for the user terminal, prior to transmitting the SMS non-receipt information.

The method may further include receiving a registration message with a validity period of 0 for the user terminal from the call session controller, after the step of transmitting the SMS non-receivable information.

An apparatus for processing an SMS message in an IMS domain according to another aspect includes: a communication circuit for communicating with a call session controller and a subscriber management server; And a processor coupled to the communication circuit, wherein the processor periodically receives a registration message including a validity time for the user terminal from the call session controller via the communication circuit, and includes in the received registration message And determines whether the subscriber management server is linked with the subscriber management server.

The processor may transmit the SMS receiving available information of the user terminal to the subscriber management server through the communication circuit when the registration message is received for the first time and the valid time is greater than zero.

The processor may transmit SMS incapability information of the user terminal to the subscriber management server through the communication circuit when the valid time included in the registration message is 0.

The processor may transmit the SMS incapability information of the user terminal to the subscriber management server through the communication circuit when the valid time included in the last received registration message has elapsed.

An apparatus for processing an SMS message in an IMS domain according to another aspect includes: a communication circuit for communicating with a call session controller and a subscriber management server; And a processor coupled to the communication circuit, wherein upon receiving a registration message for the user terminal from the call session controller, the processor sends a message requesting status information for the user terminal to the call session controller And transmits SMS reception availability information of the user terminal to the subscriber management server when receiving a notification message including active information as state information of the user terminal from the call session controller, And transmits the SMS incapability information of the user terminal to the subscriber management server when receiving the notification message including the release information as status information of the user terminal.

The processor may receive a registration message with a validity period of 0 for the user terminal from the call session controller before transmitting the SMS non-receivable information.

The processor may receive the registration message with a validity period of 0 for the user terminal from the call session controller after transmitting the SMS non-receipt information.

The present invention can reduce the network load by reducing the number of message transmission / reception with the call session controller of the IMS domain in interworking with a subscriber management server in an SMS processing apparatus in an IMS domain.

In addition, the present invention allows the SMS processing unit in the IMS domain to accurately check status information of the user terminal without missing, while accurately reflecting the SMS reception availability information of the user terminal to the subscriber management server.

1 is a block diagram of a mobile communication system according to an embodiment of the present invention.
2 is a flowchart illustrating an interworking method between an HSS and an IP-SM-GW according to an embodiment of the present invention.
3 is a flowchart illustrating an interworking method between an HSS and an IP-SM-GW according to another embodiment of the present invention.
4 is a flowchart illustrating an interworking method between an HSS and an IP-SM-GW according to another embodiment of the present invention.
5 is a diagram illustrating a configuration of an apparatus included in a mobile communication system according to an embodiment of the present invention.

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 the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a mobile communication system according to an embodiment of the present invention. 1, the mobile communication system includes an eNodeB 110, an MME 120, an S-GW 130, a P-GW 140, an HSS 180, and an IMS (IP Multimedia Subsystem) domain . This mobile communication system provides short message service (SMS) signaling via SIP / IP (Session Initiation Protocol / Internet Protocol).

The eNodeB 110 transmits and receives signals of a control plane to the MME 120 and transmits and receives signals of a user plane to the S-GW 130. [

The MME 120 includes signaling and control functions to support access to the network connection of the user terminal 170, allocation, tracking, paging, roaming and handover of network resources, It is an element to perform. The MME 120 controls the 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. The MME 120 also 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 functions to maintain a data path between the eNodeB 110 and the P-GW 140. In addition, when the user terminal 170 moves across an area served by the eNodeB 110, the S-GW 130 acts as a local mobility anchor point. That is, the packets can be routed through the S-GW 130 for mobility within the E-UTRAN (Evolved-Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network defined after 3GPP Release-8). In addition, the S-GW 130 may communicate with another 3GPP network (RAN defined before 3GPP Release-8, e.g., UTRAN or GERAN (Enhanced Data Rates for Global Evolution) Network) as an anchor point for mobility.

The Packet Data Network GateWay (P-GW) 140 corresponds to the termination point of the data interface toward the packet data network. The P-GW 140 may support policy enforcement features, packet filtering, charging support, and the like. In addition, a trusted network such as a 3GPP network and a non-3GPP (non-3GPP) network (e.g., an untrusted network such as Interworking Wireless Local Area Network (IWLAN), Code Division Multiple Access (CDMA) And can serve as an anchor point for managing mobility with the mobile terminal.

The Home Subscriber Server (HSS) 180 is a subscriber management server that includes subscription-related information for supporting network entities processing calls / sessions. The HSS 180 supports Packet Switched (PS) domain entities such as the MME 143. It can also support Circuit Switched (CS) domain entities such as the Mobile Switching Center (MSC). The HSS 180 stores the SMS over IP availability information of the user terminal 170 in cooperation with the IP-SM-GW 160 of the IMS domain and transmits the SMS over IP availability information to the user terminal 170 And the address information of the IP-SM-GW 160 of the IMS domain performing the SMS over IP processing. When the HSS 180 receives a routing inquiry message from the calling party equipment when there is an SMS message to be received by the user terminal 170, the HSS 180 transmits the IP-SM-GW (160).

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

The IP-SM-GW 160 is an application server that handles SMS over IP processing in the IMS domain. The IP-SM-GW 160 includes a registration status received from a third party register for the communication terminal 170 received from the S-CSCF and / or from the S-CSCF And performs processing of the origination or termination process of the SMS based on the NOTIFY message.

Hereinafter, a method of interworking between the HSS 180 and the IP-SM-GW 160 in the mobile communication system of FIG. 1 will be described in detail.

2 is a flowchart illustrating an interworking method of the HSS 180 and the IP-SM-GW 160 according to an embodiment of the present invention.

2, the user equipment (UE) 170 accesses the LTE communication network, performs an attach process according to a procedure defined in 3GPP TS 24.228, and registers the same in the HSS 180 (UE Registration) (S201). This process is an LTE registration that is different from the subsequent IMS registration. The bearer setup is completed between the user terminal 170 and the P-GW 140. When the LTE registration is completed as described above, the IMS registration process is performed as follows.

The user terminal (UE) 170 transmits a SIP REGISTER message to the S-CSCF of the IMS domain through the bearer. The S-CSCF receiving the SIP REGISTER message selects the IP-SM-GW 160 to receive the user terminal 170 (S202). A plurality of IP-SM-GWs 160 are established in the mobile communication system, and the IP-SM-GW 160 is allocated to each mobile station number. For example, the user terminal 170 having the station number '1111' of 010-1111-1111 and 010-2222-1111 performs the SMS process in the IP-SM-GW # 1, and the user terminal 170 having the station number '2222' (170) may be set to perform SMS processing in IP-SM-GW # 2. However, the present invention is not limited thereto, and the IP-SM-GW 160 may be allocated to each user terminal 170 according to various criteria.

After selecting the IP-SM-GW 160, the S-CSCF transmits a SIP REGISTER message to the selected IP-SM-GW 160 (S203). The SIP REGISTER message includes an address of the user terminal 170 in the IMS domain, expiration time, identification information (e.g., MSISDN) of the user terminal, and the validity time has a value greater than zero. The IP-SM-GW 160 transmits a 200 OK message to the S-CSCF in response to the SIP REGISTER message (S204).

The IP-SM-GW 160 checks the valid time included in the SIP REGISTER message received in step S203. As described above, since the user terminal 170 is initially registered, the valid time is greater than 0, and thus the HSS 180 can know that the IP-SM-GW 160 can receive the SMS message on behalf of the user terminal 170. [ (AnyTimeModification) message according to a MAP (Mobile Application Part) protocol to the HSS 180 (S205). The ATM message includes identification information (e.g., MSISDN) of the user terminal 170, an address of the IP-SM-GW 160, and information about the availability of the SMS over IP of the user terminal 170. [ At this time, the information can be replaced with the address of the IP-SM-GW 160 without including the information on the availability of SMS over IP separately. The HSS 180 having received the ATM message transmits an ATM response to the IP-SM-GW 160 (S206), records in the subscriber information that the user terminal 170 is capable of SMS over IP, The address of the IP-SM-GW 160 can be returned when the routing inquiry message for the SMS message received to the user terminal 170 is received. .

After the IMS registration of the user terminal 170 is completed, the S-CSCF periodically transmits a SIP REGISTER message including the status information of the user terminal 170 to the IP-SM-GW 160 (S207 ). Here, the status information may be valid time. If the user terminal 170 is in the IMS registration state, the validity time is greater than zero, and if the user terminal 170 is in the IMS deregistration state, the validity time may be set to zero.

The IP-SM-GW 160 determines whether the valid time included in the SIP REGISTER message periodically received from the S-CSCF is 0 (S208). If the valid time is not 0, the IP-SM-GW 160 does not interwork with the HSS 180 because the user terminal 170 continues to maintain the IMS registration state. If the valid time included in the SIP REGISTER message is 0, since the user terminal 170 is in the IMS deregistered state, the IP-SM-GW 160 transmits an HSS And transmits the ATM message according to the MAP protocol to the HSS 180 (S209). The ATM message includes identification information (e.g., MSISDN) of the user terminal 170, an address of the IP-SM-GW 160, and information on the SMS over IP disablement of the user terminal 170. At this time, the address of the IP-SM-GW 160 may be replaced with a null value without including the information about the SMS over IP disablement. Upon receiving the ATM message, the HSS 180 informs the subscriber information that the user terminal 170 can not accept the SMS over IP. Thus, if the routing inquiry message for the SMS message to be received by the user terminal 170 is received, Can guide.

The S-CSCF and the IP-SM-GW 160 interwork using the SIP REGISTER message instead of the NOTIFY message as in the embodiment described with reference to FIG. Conventionally, the S-CSCF and the IP-SM-GW 160 interwork with NOTIFY messages according to 3GPP 24.341. The interworking load between the S-CSCF and the IP-SM-GW 160 may occur because the IP-SM-GW 160 must transmit the SUBSCRIBE message to the HSS 180 in order to interoperate with the NOTIFY message. 2, the S-CSCF and the IP-SM-GW 160 do not transmit and receive a SUBSCRIBE message and a response message thereto by interworking using the SIP REGISTER message instead of the NOTIFY message , Thus reducing the interlocking load.

2, the IP-SM-GW 160 checks whether the valid time included in the SIP REGISTER message received in step 207 is 0. If the valid time is 0, the IP-SM- Notify of IP not available. However, without being limited thereto, the IP-SM-GW 160 does not receive a SIP REGISTER message with a valid time of 0, and even if the valid time included in a previously received SIP REGISTER message has elapsed, SMS over IP can not be reported. In other words, if the SIP REGISTER message should be periodically received, and if the SIP REGISTER message is lost due to the loss, the HSS 180 automatically notifies the HSS 180 of the SMS over IP disablement when the validity time included in the previously received SIP REGISTER message has elapsed .

3 is a flowchart illustrating an interworking method between the HSS 180 and the IP-SM-GW 160 according to another embodiment of the present invention.

3, the user equipment (UE) 170 accesses the LTE communication network, performs an attach process according to a procedure defined in 3GPP TS 24.228, and registers it in the HSS 180 (UE Registration) (S301). This process is an LTE registration that is different from the subsequent IMS registration. The bearer setup is completed between the user terminal 170 and the P-GW 140. When the LTE registration is completed as described above, the IMS registration process is performed as follows.

The user terminal (UE) 170 transmits a SIP REGISTER message to the S-CSCF of the IMS domain through the bearer. The S-CSCF receiving the SIP REGISTER message selects the IP-SM-GW 160 to receive the user terminal 170 (S302).

After selecting the IP-SM-GW 160, the S-CSCF transmits a SIP REGISTER message to the selected IP-SM-GW 160 (S303). The SIP REGISTER message includes the address of the user terminal 170 in the IMS domain, the expiration time, the identification information (e.g., MSISDN) of the user terminal 170, and the validity time has a value greater than zero. The IP-SM-GW 160 transmits a 200 OK message to the S-CSCF in response to the SIP REGISTER message (S204).

Since the IP-SM-GW 160 has received the first SIP REGISTER message for the user terminal 170, the IP-SM-GW 160 sends a SUBSCRIBE message to the HSS 180 to periodically receive the registration status of the user terminal 170. [ Message (S305). The SUBSCRIBE message may include an address in the IMS domain of the user terminal 170 as a message requesting the status information of the user terminal 170. The HSS 180 transmits a 200 OK message in response to the SUBSCRIBE message (S306).

The HSS 180 receiving the SUBSCRIBE message periodically transmits a NOTIFY message including the registration status of the user terminal 170 to the IP-SM-GW 160. In this embodiment, after transmitting the 200 OK message in step S306, the HSS 180 forwards the NOTIFY message to the IP-SM-GW 160 for the first time. At this time, the NOTIFY message includes the active status information as the status information of the user terminal 170. Accordingly, since the active state information is included in the initially received NOTIFY message, the IP-SM-GW 160 transmits the MAP message to the HSS 180 in order to inform the HSS 180 that the SMS message can be received on behalf of the user terminal 170 (AnyTimeModification) message according to the Application Part protocol to the HSS 180 (S308). The ATM message includes identification information (e.g., MSISDN) of the user terminal 170, an address of the IP-SM-GW 160, and information about the availability of the SMS over IP of the user terminal 170. [ At this time, the information can be replaced with the address of the IP-SM-GW 160 without including the information on the availability of SMS over IP separately. The HSS 180 receiving the ATM message transmits an ATM response to the IP-SM-GW 160 in step S309. The user terminal 170 records in the subscriber information that the SMS- SM-GW 160 by storing the address of the SM-GW 160 when the SMS message received to the user terminal 170 is received.

The S-CSCF periodically transmits a NOTIFY message including status information of the user terminal 170 to the IP-SM-GW 160. At this time, as shown in FIG. 3, the user terminal 170 may perform LTE deregistration such as power off (S310). The procedure of LTE deregistration can refer to 3GPP TS 24.288. The S-CSCF transmits a REGISTER message with the validity time set to 0 and a NOTIFY message according to the status change to the IP-SM-GW 160. The IP-SM- In this embodiment, it is assumed that the S-CSCF first transmits a NOTIFY message and then transmits a REGISTER message with a validity time 0 thereafter.

As shown in FIG. 3, the S-CSCF transmits a NOTIFY message including terminated as status information to the IP-SM-GW 160 because the user terminal 170 has been unregistered in IMS (S311). Upon receiving the NOTIFY message, the IP-SM-GW 160 confirms that the status of the user terminal 170 becomes the deregistered state in the registration state, and thus the HSS 180) according to the MAP protocol (S312). The ATM message includes identification information (e.g., MSISDN) of the user terminal 170, an address of the IP-SM-GW 160, and information on the SMS over IP disablement of the user terminal 170. At this time, the address of the IP-SM-GW 160 may be replaced with a null value without including the information about the SMS over IP disablement. The HSS 180 transmits an ATM response to the ATM message to the IP-SM-GW 160 (S313). Upon receiving the ATM message, the HSS 180 informs the subscriber information that the user terminal 170 can not accept the SMS over IP. Thus, if the routing inquiry message for the SMS message to be received by the user terminal 170 is received, Can guide.

Meanwhile, as shown in FIG. 3, the S-CSCF transmits a REGISTER message having an effective time 0 to the IP-SM-GW 160 separately from the NOTIFY message (S314). The IP-SM-GW 160 can confirm that the user terminal 170 has been released from the IMS registration because the valid time included in the received REGISTER message is zero. The reason why the S-CSCF transmits a NOTIFY message to the IP-SM-GW 160 when the IMS registration of the user terminal 170 is canceled is that the NOTIFY message is lost and the IP- To prevent the SM-GW 160 from perceiving the IMS deregistration of the user terminal 170.

According to the 3GPP standard, the IP-SM-GW 160 interlocks with the HSS 180 when it is determined that the status of the user terminal 170 has changed upon receiving the NOTIFY message. 3, the IP-SM-GW 160 receives a REGISTER message having an effective time of 0 after receiving a NOTIFY message including terminated information, so that at the receiving time of a NOTIFY message including terminated information, It determines that the state of the terminal 170 has been changed, and operates in conjunction with the HSS 180. However, since the state of the user terminal 170 is in the deregistered state at the time of receiving the NOTIFY message when receiving the NOTIFY message including the terminated information after first receiving the REGISTER message having the valid time 0, the IP-SM-GW 160 are not interworked with the HSS 180. Therefore, the SMS over IP disable information of the user terminal 180 is not properly reflected in the HSS 180. In order to prevent this, the IP-SM-GW 160 interlocks with the HSS 180 unconditionally upon receipt of a NOTIFY message including terminated information, irrespective of the reception time of the REGISTER message having an effective time of zero. This will be described in detail with reference to FIG.

4 is a flowchart for explaining an interworking method of the HSS 180 and the IP-SM-GW 160 according to another embodiment of the present invention. In the embodiment of FIG. 4, 3, detailed description thereof will be omitted, and other steps will be mainly described.

Referring to FIG. 4, after the user terminal 170 performs LTE registration and IMS registration and registers the SMS over IP available state in the HSS 180, the LTE registration and the IMS registration are deregistered (S301 to S310 ). Therefore, the S-CSCF transmits a REGISTER message with a valid time set to 0 and a NOTIFY message according to the status change to the IP-SM-GW 160. In this embodiment, the S-CSCF first transmits a REGISTER message having an effective time set to 0 (S401), and transmits a NOTIFY message according to the status change later (S402).

According to the 3GPP standard, the IP-SM-GW 160 interlocks with the HSS 180 when it is determined that the status of the user terminal 170 has been changed at the time of receiving the NOTIFY message. Accordingly, according to the 3GPP standard, the IP-SM-GW 160 receives a REGISTER message for which the valid time has already been set to 0 before receiving the NOTIFY message according to the status change, and the status of the user terminal 170 is deregistered It does not work with the HSS 180 when receiving a NOTIFY message according to the status change.

However, in the present embodiment, the IP-SM-GW 160 interworks with the HSS 180 when receiving a NOTIFY message including terminated information, regardless of the state of the user terminal 170. [ The IP-SM-GW 160 receiving the NOTIFY message including the terminated information transmits an ATM message according to the MAP protocol to the HSS 180 to inform the user terminal 170 that the SMS message can not be received (S403 ). The ATM message includes identification information (e.g., MSISDN) of the user terminal 170, an address of the IP-SM-GW 160, and information on the SMS over IP disablement of the user terminal 170. At this time, the address of the IP-SM-GW 160 may be replaced with a null value without including the information about the SMS over IP disablement. The HSS 180 transmits an ATM response message to the IP-SM-GW 160 (S404). Upon receiving the ATM message, the HSS 180 informs the subscriber information that the user terminal 170 can not accept the SMS over IP. Thus, if the routing inquiry message for the SMS message to be received by the user terminal 170 is received, Can guide.

As described above with reference to FIGS. 3 and 4, when the user terminal 170 releases the LTE deregistration and the IMS deregistration, the S-CSCF transmits a REGISTER message having a valid time 0, as well as a NOTIFY message, SM-GW 160 to allow the IP-SM-GW 160 to recognize the deregistration state of the user terminal 170 without missing and also to allow the HSS 180 to receive the registration of the user terminal 170 Ensure that SMS over IP incapacity information is registered.

5 is a diagram illustrating a configuration of an apparatus included in a mobile communication system according to an embodiment of the present invention. The equipment shown in FIG. 5 may be an HSS 180 or an IP-SM-GW 160. As shown in FIG. 5, the equipment for mobile communication includes a processor 510, a memory 520, and a communication circuit 530.

Processor 510 may implement the functions, processes, and / or methods suggested in the present invention. For example, the processor 510 may be implemented to perform operations of the HSS 180 or the IP-SM-GW 160 according to the embodiment of the present invention described above. The processor may perform operations of the HSS 180 or the IP-SM-GW 160 disclosed in the embodiments of Figs. 1-4. The processor 510 may include an application-specific integrated circuit (ASIC), another chipset, logic circuitry, a data processing device, and / or a transducer for converting baseband signals and radio signals.

The memory 520 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and / or other storage devices.

The communication circuit 530 performs communication via an external port or communication by an RF signal. The communication circuit 530 converts electrical signals to RF signals and vice versa, and is capable of communicating with the communication network, other mobile gateway devices, and communication devices via the RF signals. The communication circuitry 252 may utilize any of a plurality of communication standards, protocols, and techniques, including, but not limited to, any other suitable communication protocol including a communication protocol not yet developed at the time of filing of the present application.

When the embodiment is implemented in software, the above-described method may be implemented by a module (process, function, etc.) that performs the above-described function. The module is stored in the memory 520 and may be executed by the processor 510. The memory 520 may be internal or external to the processor 510 and may be coupled to the processor 510 by various well known means.

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. In addition, the features described in the individual embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described in the singular < Desc / Clms Page number 5 > embodiments herein may be implemented in various embodiments individually or in combination as appropriate.

Although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that all described operations are performed to obtain a sequence of sequential orders, or a desired result . In certain circumstances, multitasking and parallel processing may be advantageous. It should also be understood that the division of various system components in the above embodiments does not require such distinction in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

110: eNodeB
120: MME
130: S-GW
140: P-GW
150: CSCF
160: IP-SM-GW
170: User terminal (UE)
180: HSS

Claims (14)

A method for interworking with a subscriber management server in an application processing an SMS (Short Messaging Service) message of an IP Multimedia Subsystem (IMS) domain,
Periodically receiving a registration message including a validity time for the user terminal from the call session controller; And
And determining whether the subscriber management server is interworked based on the valid time included in the received registration message. The method according to claim 1,
The method of claim 1,
And transmitting the SMS reception availability information of the user terminal to the subscriber management server if the registration message is received first and the valid time is greater than zero. The method according to claim 1,
The method of claim 1,
And transmitting the SMS incapability information of the user terminal to the subscriber management server when the valid time included in the registration message is zero. The method according to claim 1,
The method of claim 1,
And transmitting SMS incapability information of the user terminal to the subscriber management server when the valid time included in the last received registration message has elapsed. A method of interworking with a subscriber management server in an application for processing an SMS message of an IMS domain,
Receiving a registration message for a user terminal from a call session controller;
Sending a message to the call session controller requesting status information for the user terminal;
Receiving a notification message including active information from the call session controller as state information of the user terminal and transmitting SMS reception availability information of the user terminal to the subscriber management server; And
Receiving notification messages including release information as state information of the user terminal from the call session controller, and transmitting SMS incapability information of the user terminal to the subscriber management server. 6. The method of claim 5,
Prior to transmitting the SMS incapability information,
Further comprising receiving a registration message with a validity period of zero for the user terminal from the call session controller. 6. The method of claim 5,
After transmitting the SMS incapability information,
Further comprising receiving a registration message with a validity period of zero for the user terminal from the call session controller. An apparatus for processing an SMS message in an IMS domain,
A communication circuit for communicating with the call session controller and the subscriber management server; And
And a processor coupled to the communication circuit,
The processor comprising:
Periodically receiving a registration message including a valid time for a user terminal from the call session controller through the communication circuit,
And determines whether the subscriber management server is interworked based on the valid time included in the received registration message. 9. The method of claim 8,
The processor comprising:
When the registration message is received for the first time and the valid time is greater than 0, transmits the SMS reception availability information of the user terminal to the subscriber management server via the communication circuit. 9. The method of claim 8,
The processor comprising:
And transmits the SMS incapability information of the user terminal to the subscriber management server through the communication circuit when the valid time included in the registration message is 0. 9. The method of claim 8,
The processor comprising:
And transmits the SMS incapability information of the user terminal to the subscriber management server through the communication circuit when the valid time included in the last received registration message has elapsed. In an apparatus for processing SMS messages in an IMS domain,
A communication circuit for communicating with the call session controller and the subscriber management server; And
And a processor coupled to the communication circuit,
The processor comprising:
Upon receipt of a registration message for the user terminal from the call session controller, transmits a message for requesting status information of the user terminal to the call session controller,
When receiving a notification message including active information as state information of the user terminal from the call session controller, transmits SMS reception availability information of the user terminal to the subscriber management server,
And transmits the SMS not-receivable information of the user terminal to the subscriber management server when receiving a notification message including release information as status information of the user terminal from the call session controller. 13. The method of claim 12,
The processor comprising:
Before transmitting the SMS incapability information,
And receiving a registration message with a validity period of 0 for the user terminal from the call session controller. 13. The method of claim 12,
The processor comprising:
After transmitting the SMS incapability information,
And receiving a registration message with a validity period of 0 for the user terminal from the call session controller.

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