KR100955767B1 - Apparatus and method for restricting registration of voip terminals - Google Patents

Abstract

The present invention relates to an apparatus and method for registering a VoIP user terminal in an IMS environment, and to maintain a call right of a VoIP user terminal using a PSTN phone number in an IMS environment as an area corresponding to an area code of a PSTN phone number.

To this end, the present invention, in a method for registering a Voice over Internet Protocol (VoIP) user terminal in an IP Multimedia Sub-System (IMS) environment, the IP address and the IP address of the user terminal from the call session control unit (CSCF) Receiving a user authentication request message including a Uniform Resource Identifier (URI); analyzing the user authentication request message; authenticating the user terminal according to a result of analyzing the user authentication request message; And transmitting a user authentication response message to the call session controller (CSCF) according to whether the terminal is authenticated. The authenticating the user terminal includes whether the IP address is included in an IP address band corresponding to the URI. Determining whether or not, and authenticating the user terminal according to a result of determining whether the IP address is included.

User Registration, IMS, VoIP, IP Address

Description

APPARATUS AND METHOD FOR RESTRICTING REGISTRATION OF VOIP TERMINALS} A device, an IP authentication server, and a method for registering a UE user terminal in an IMS environment

The present invention relates to an apparatus and method for registering a Voice over Internet Protocol (VoIP) user terminal in an IP Multimedia Sub-System (IMS) environment. More specifically, the VoIP user terminal maintains a call right according to an area code of a telephone number. An apparatus and a method for enabling the same.

The 3rd Generation Partnership Project (3GPP) is a new standard for creating, delivering, and playing multimedia over high-speed wireless networks. The 3GPP standard provides a new type of multimedia add-on radios and rich multimedia technologies over newly evolved broadband mobile networks. do. 3GPP defines the IMS environment as a communication platform that provides such multimedia services.

IMS aims to provide multimedia session control and service based on Session Initiation Protocol (SIP) in ALL-IP network environment. The IMS environment can simultaneously provide users with various types of packet services based on the underlying IP transport protocol. The user can simultaneously use existing real-time services such as voice and video data services, as well as non-real-time services such as file, e-mail, and short message transmission, and can use new services using these services.

VoIP service, a technology that allows users to use telephones over the Internet, has recently developed into a form of integrating various multimedia functions and additional services based on the IMS environment. By assigning a unique number beginning with '070' to the VoIP terminal for VoIP service, it is possible to make and receive calls just like a regular telephone. However, this identification number '070' is similar to '060', which was recognized as a pronoun of spam originating number, and acts as a big barrier to the activation of the VoIP service market.

Accordingly, a number porting system will be implemented to allow users to receive VoIP services while using existing public switched telephone network (PSTN) telephone numbers. The number porting system will have a great effect on VOIP service activation because it can move users who did not want to subscribe to the VoIP service due to the '070' number problem.

Once the number transfer scheme is in place, the government or operator will be able to provide users with the right to call in accordance with the There may be a need to restrict by area code. That is, since the PSTN telephone number system is composed of 'area code-station-number', the user is restricted in the area where the user can use the phone according to the area code of the phone number. For example, a user who uses the Seoul area code 02 may use the phone only in Seoul, and a user who uses the Daejeon area code 042 only in Daejeon. VoIP users by port number use the PSTN phone number as it is, it is to limit to maintain the right to call according to the area code of the PSTN phone number. If the right to call is not restricted, a user using the Seoul area code can subscribe to the VoIP service using the number porting system and make a call to the Seoul area code from another area such as Daejeon, which may cause confusion in the PSTN phone number system.

In order to maintain or restrict the call right as described above, there may be a method of restricting registration at the time of registration (first access) of the VoIP user terminal in the IMS environment. However, in the current IMS environment, since the SIP registration request message is processed based on an ID (Private ID, Public ID) owned by the user terminal, there is no practical way to restrict the SIP registration request message of the user terminal from a network perspective.

Accordingly, an object of the present invention is to provide an apparatus and method for maintaining a call right of a VoIP user terminal using a PSTN telephone number in an IMS environment in an area corresponding to an area code of a PSTN telephone number.

Another object of the present invention is to provide an apparatus and method for restricting registration of a VoIP user terminal based on a telephone number provided to an IP address-based VoIP user terminal that can move on a network.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned above can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

In order to achieve the above object, the present invention provides a call session controller (CSCF) in a method of registering a Voice over Internet Protocol (VoIP) user terminal in an IP Multimedia Sub-System (IMS) environment. Receiving a user authentication request message including an IP address and a Uniform Resource Identifier (URI) from the user terminal, analyzing the user authentication request message, and analyzing the user authentication request message from the user terminal And authenticating the user terminal, and transmitting a user authentication response message to the call session controller (CSCF) according to whether the user terminal is authenticated, wherein authenticating the user terminal comprises: an IP address corresponding to the URI. Determining whether the IP address is included in a band; A a step of authentication.
The present invention also provides a method for registering a VoIP user terminal in an IMS environment, comprising: receiving a user authentication request message including an IP address and a Uniform Resource Identifier (URI) of the user terminal from a call session controller (CSCF); Analyzing the user authentication request message; authenticating the user terminal according to a result of analyzing the user authentication request message; and user authentication response message to the call session controller (CSCF) according to whether the user terminal is authenticated. And transmitting the IP address and the URI of the user terminal to an IP authentication server, wherein the IP authentication server corresponds to the URI. Determining whether the IP address is included in the result; and determining whether the IP authentication server includes the IP address And authenticating the user terminal according to the present invention, receiving the IP authentication of the user terminal from the IP authentication server, and authenticating the user terminal according to the received IP authentication.

The present invention also provides a method for registering a VoIP user terminal in an IMS environment, the method comprising: receiving an IP address and a URI of the user terminal from a subscriber information management server (HSS); Determining whether an IP address is included, and transmitting, to the subscriber information management server (HSS), whether or not the user terminal is authenticated according to the IP address inclusion result.

The present invention also provides a device for registering a VoIP user terminal in an IMS environment, comprising: a message receiving unit receiving a user authentication request message including an IP address and a URI of the user terminal from a call session controller (CSCF), and the user authentication; User authentication response to the call session control unit (CSCF) according to the message analysis unit for analyzing the request message, the user terminal authentication unit for authenticating the user terminal according to the analysis result of the message analysis unit, and the authentication result of the user terminal authentication unit And a message transmitter for transmitting a message, wherein the user terminal authentication unit includes an IP confirmation unit that determines whether the IP address is included in an IP address band corresponding to the URI, and according to a determination result of the IP confirmation unit. Determine whether the user terminal is authenticated.
The present invention also provides a device for registering a VoIP user terminal in an IMS environment, comprising: a message receiving unit receiving a user authentication request message including an IP address and a URI of the user terminal from a call session controller (CSCF), and the user authentication; User authentication response to the call session control unit (CSCF) according to the message analysis unit for analyzing the request message, the user terminal authentication unit for authenticating the user terminal according to the analysis result of the message analysis unit, and the authentication result of the user terminal authentication unit And a message transmitter for transmitting a message, wherein the user terminal authentication unit transmits the IP address and the URI of the user terminal to an IP authentication server, and the IP authentication server transmits the IP address to the IP address band corresponding to the URI. Determining whether the IP address is included and whether or not the IP authentication result of authenticating the user terminal " It includes a communication unit for receiving from the IP authentication server, and determines whether to authenticate the user terminal according to the received IP authentication.

The present invention also provides an IP authentication server for registering a VoIP user terminal in an IMS environment, receiving an IP address and a URI of the user terminal from a subscriber information management server (HSS), and determining whether the user terminal is IP authenticated. And a communication unit for transmitting to the subscriber information management server (HSS) and an IP confirmation unit for determining whether the IP address is included in the IP address band corresponding to the URI, and according to the determination result of the IP confirmation unit. Determines whether to authenticate IP.

As described above, the present invention has an effect of maintaining a call right of a VoIP user terminal using a PSTN telephone number in an IMS environment as an area corresponding to an area code of the PSTN telephone number.
In particular, since the present invention can restrict the registration of the VoIP user terminal based on the telephone number provided to the IP address-based VoIP user terminal that can move on the network, it is possible to effectively apply the operator's telephone number based call right restriction policy. This helps to prevent confusion in the PSTN telephone numbering system.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a VoIP user terminal registration apparatus 100 and an IP (Internet Protocol) authentication server 150 according to the present invention. As illustrated in FIG. 1, the VoIP user terminal registration apparatus 100 may be connected to an IP authentication server 150 and an IP conversion server 160. The VoIP user terminal registration apparatus 100 includes a message receiver 102, a message transmitter 104, a message analyzer 110, an IP converter 120, and a user terminal authentication unit 130. The VoIP user terminal registration apparatus 100 according to the present invention may be a subscriber information management server (HSS: Home Subscriber Server, hereinafter referred to as "HSS").

The message receiving unit 102 receives a user authentication request message including an IP address and a Uniform Resource Identifier (URI) of a user terminal from a call session control function (CSCF). The message transmitter 104 transmits a user authentication response message to the call session controller (CSCF). The user authentication request message and the user authentication response message may be a User Authorization Request (UAR) message and a User Authorization Answer (UAA) message conforming to the DIAMETER protocol, respectively.

The message analyzer 110 receives and analyzes a user authentication request message from the message receiver 102. The analysis of the user authentication request message may be performed by extracting necessary information from the user authentication request message or using the extracted information to make a decision necessary for proceeding with the user terminal authentication procedure.

The user terminal authentication unit 130 may include an IP verification unit 132. The user terminal authenticator 130 receives an IP address and a URI of the user terminal from the message parser 110 when IP authentication is required according to the analysis result of the message parser 110. The IP verification unit 132 may refer to a database including an area code of the PSTN telephone number and an IP address band allocated to the area. The IP verification unit 132 extracts the telephone number (or TEL-URI) of the user terminal from the received URI and checks whether the IP address of the user terminal is included in the IP address band corresponding to the area code. As mentioned in the present specification, 'IP authentication' indicates a process or a result of checking whether the IP address of the terminal is included.

In consideration of a database or load of the VoIP user terminal registration apparatus 100, the IP authentication server 150 other than the VoIP user terminal registration apparatus 100 may be configured to include the IP verification unit 152. In this case, the user terminal authentication unit 130 may include a communication unit 134 for communicating with the IP authentication server 150, and the IP authentication server 150 may be a communication unit for communicating with the user terminal authentication unit 130. 154 may include. The above-described IP authentication procedure is performed by the IP authentication server 150 instead of the user terminal authentication unit 130.

When there is a necessity to convert the IP address of the user terminal, the IP conversion unit 120 receives the IP address of the user terminal from the message analyzer 110 and converts it in conjunction with the IP conversion server 160 to update it. do. Since the user terminal does not always use the IP address based on the area where the actual user terminal is located, in this case, the IP conversion unit 120 is used to go through the process of converting to the IP address of the area where the user terminal is located.

2 is a configuration diagram of an embodiment of a related network in an IMS environment to which the present invention is applied. The network of the IMS environment basically includes a user terminal 200, a P-CSCF 210, an I-CSCF 220, an S-CSCF 230, an HSS 100, and an IP authentication server according to the present invention. 150) may be further included.

In the embodiment shown in FIG. 2, the HSS 100 performs the role of the VoIP user terminal registration apparatus 100. In general, HSS 100 serves as a central database for service subscribers. The HSS 100 is a kind of database that integrates a home location register function and a function for mobility management and authentication of an IP multimedia subscriber.

The call session controller (CSCF) performs registration and multimedia call processing using the SIP protocol. The call session controller (CSCF) includes a P-CSCF (Proxy-CSCF) 210, an I-CSCF (Interrogating-CSCF) 220, and an S-CSCF (Serving-CSCF) 230. The communication interface between the user terminal 200 and the P-CSCF 210, between the P-CSCF 210 and the I-CSCF 220, and between the I-CSCF 220 and the S-CSCF 230 conforms to the SIP protocol. . The communication interface between the HSS 100 and the I-CSCF 220 and between the HSS 100 and the S-CSCF 230 is in accordance with a DIAMETER protocol. Communication between the HSS 100 and the IP authentication server 150 is for IP authentication and can be configured as a separate interface.

The P-CSCF 210 is a point where a user terminal first accesses an IMS network. The P-CSCF 210 transfers the user's SIP registration request message to the I-CSCF 220 with reference to the user's home domain and maintains the security of the user information. The I-CSCF 220 obtains the address of the S-CSCF 230 from the HSS 100 and assigns it to the S-CSCF 230 to perform SIP registration of the user. The S-CSCF 230 obtains user information from the HSS 100 and provides a corresponding service to the user.

3 is a flowchart illustrating a VoIP user terminal registration method according to the present invention. A method of registering a VoIP user terminal is described below with reference to FIG. 1.

First, the VoIP user terminal registration apparatus 100 receives a user authentication request message including an IP address and a URI of a user terminal from a call session controller (CSCF) (310). Although the 3GPP standard does not specify that the user authentication request message should include the IP address of the user terminal, the call session controller (CSCF) transmits the IP address of the user terminal. Meanwhile, the URI includes at least one of a SIP-URI and a TEL-URI, and is also used as a term of a higher concept collectively called a SIP-URI and a TEL-URI. SIP-URI is a SIP addressing scheme defined in the RFC 3261 standard, and TEL-URI is an addressing scheme that is in fact the telephone number itself defined in the RFC 3966 standard. Since the SIP-URI and the TEL-URI can be matched as information of the corresponding user terminal, they can be converted to each other.

The message analyzer 110 analyzes the received user authentication request message (320). It is determined whether to go through the IP authentication procedure according to the analysis result of the message analysis unit 110. The analysis 320 of the message analyzer may include determining whether the user terminal is subscribed to the VoIP service, if the call right restriction is required according to a region, or if the user terminal has the same IP address as previously determined. The user terminal authenticator 130 authenticates the user terminal 330 according to the analysis 320 result of the message analyzer. A more detailed description of the user terminal authentication process 330 is described below in conjunction with FIGS. 4 through 6.

The user terminal registration apparatus 100 transmits a user authentication response message to the call session controller CSCF (340) according to whether the user terminal authentication (330). If the user terminal authentication 330 is allowed or not, the user terminal is registered according to a normal message procedure. If the user terminal authentication 330 is allowed, the user authentication response message is transmitted to the call session controller CSCF by applying a corresponding error code (340).

4 is a detailed flowchart of the user terminal authentication process 330 illustrated in FIG. 3.

If it is determined that IP authentication is required, the user terminal authentication unit 130 receives an IP address and a URI (TEL-URI or SIP-URI) of the user terminal from the message analyzer 110. The IP verification unit 132 of the user terminal authentication unit 130 extracts the TEL-URI from the received URI (if receiving the SIP-URI, the TEL-URI corresponding thereto). The IP verification unit 132 detects an area code from the TEL-URI in the form of a PSTN telephone number, and determines whether the IP address of the user terminal is included in the IP address band allocated to the area (410). The user terminal authenticator 130 authenticates the user terminal 420 according to whether the IP address is included 410.

For example, a user terminal using the Seoul area code 02-123-4567 receives a service by subscribing to a VoIP service through a number porting system. A user may be provided with a VoIP service through a user terminal having an 02-123-4567 number as it is and having an IP address (for example, 123.123.123.123). In order to receive the VoIP service, the user terminal transmits a user authentication request message, and the message analyzer 110 determines that IP authentication is required. The IP verification unit 132 of the user terminal authentication unit 130 extracts the area code 02 from the telephone number of the user terminal from the received URI, and an IP address band corresponding to the area code 02 (for example, 123.122.xxx. It is determined whether the xxx to 123.124.xxx.xxx includes the IP address (123.123.123.123) of the user terminal. As a result of determination, when the IP address of the user terminal is included, the user terminal is in a range of allowed call area, so the user terminal authentication unit 130 accepts the user terminal authentication, and if not, the user terminal authentication unit 130. ) Denies user terminal authentication.

FIG. 5 is a detailed flowchart of the user terminal authentication process 330 shown in FIG. 3.

The IP authentication procedure performed by the IP verification unit 132 may be performed in an external system or server in addition to the VoIP user terminal registration apparatus 100. In this case, first, the communication unit 134 of the user terminal authentication unit 130 transmits the IP address and URI to the IP authentication server 150 (510). After the IP authentication is performed in the IP authentication server 150, the communication unit 134 receives 520 an IP authentication result. Then, the user terminal is authenticated (530) according to whether the IP authentication. As described above, 'IP authentication status' is the same as whether the IP address of the user terminal is included in the IP address band allocated to the area indicated by the area code of the telephone number of the user terminal.

6 is a flowchart illustrating a VoIP user terminal registration method according to the present invention performed in the IP authentication server 150.

In the embodiment according to the above description of FIG. 5, the IP authentication server 150 performs an IP authentication procedure. The IP authentication server 150 includes a communication unit 154 and receives 610 an IP address and a URI of the user terminal from the VoIP user terminal registration device 100 through the communication unit 154. The IP authentication server 150 includes an IP verification unit 152, and the IP verification unit 152 performs the same role as the IP verification unit 132 of the user terminal authentication unit 130. The IP verification unit 152 determines whether the IP address of the user terminal is included in the IP address band corresponding to the received URI, that is, whether the IP is authenticated (620). The communication unit 154 transmits 630 whether the IP authentication is determined to the VoIP user terminal registration apparatus 100 to allow the user terminal authentication unit 130 to authenticate the user terminal.

7 is a flowchart illustrating an IP conversion process using the IP conversion server 160 in the user terminal registration method according to the present invention. The IP conversion process according to the present invention will be described below with reference to FIG. 1.

In order to achieve the effects of the present invention, the IP address of the user terminal should be an IP address corresponding to the area where the user terminal is actually located. When the user terminal is connected to an external network by connecting through a server, router, gateway, etc. in another region, the IP address of the user terminal may correspond to a region different from the location of the user terminal. In this case, the IP conversion server 160 converts the IP address into the IP address of the actual user terminal.

First, the IP conversion unit 120 transmits the IP address of the user terminal received from the message analysis unit 110 to the IP conversion server (710). The IP conversion server 160 converts the received IP address of the user terminal into an IP address corresponding to the actual location and returns the converted IP address. The IP conversion unit 120 receives 720 the converted IP address from the IP conversion server 160, updates 730 the IP address of the user terminal with the converted IP address, and returns the result to the message analyzer 110. . The VoIP user terminal registration apparatus continues the user terminal registration procedure using the converted IP address.

8 is a message flow diagram in an IMS environment according to an embodiment of the present invention. In this embodiment, the HSS 100 serves as the VoIP user terminal registration device 100 according to the present invention.

First, the user terminal 200 transmits a SIP Register message to the P-CSCF 210 (801). The P-CSCF 210 transmits 802 the SIP Register message to the corresponding I-CSCF 220 according to the SIP-URI domain information of the received SIP Register message. The I-CSCF 220 transmits 803 a DIAMETER UAR message for the SIP-URI of the SIP Register message to the HSS 100 for authentication of the user terminal.

The HSS 100 determines whether the user subscribes to the VoIP service and needs IP authentication (820). The HSS 100 analyzes the UAR message 830 and requests 804 IP authentication from the IP authentication server 150 when the subscriber is a VoIP service subscriber and needs IP authentication. The IP authentication server 150 determines whether the IP address of the user terminal is included in the appropriate IP address band (840) and transmits the result of the IP authentication to the HSS 100 (805).

The HSS 100 proceeds with user terminal registration by sending 806 a UAA message to the I-CSCF 220 according to the procedure defined in the 3GPP standard if the IP authentication is permitted or vice versa. The code is applied to the UAA message and sent 806 to the I-CSCF 220. Here, the error code may be DIAMETER_ERROR_AUTHORIZATION_REJECTED. In this case, the I-CSCF 220 limits the registration of the corresponding user terminal by responding to the SIP Register message with a SIP 403 Forbidden message.

The user terminal 200 may transmit 807 a Register RES message to the P-CSCF 210 in response to an authentication test. In this case, the HSS 100 receives the UAR message from the I-CSCF 220 (809), and then compares the IP address of the user terminal with the IP address already stored (850). Since the UAR message may be received many times, the HSS 100 may not perform duplicate IP authentication by storing the received IP address and comparing the received IP address with the already stored IP address in the next turn. have. If the HSS 100 compares the IP addresses, and if the same is the same, since the user terminal authentication process has already been performed, it is determined whether the IP authentication is necessary (820) and the IP authentication request (804), and the new IP is compared. If it is an address, the process returns to the process of determining whether IP authentication is required (820).

9 is a flowchart illustrating a method for registering a user terminal according to an embodiment of the present invention. A user terminal registration method according to an embodiment of the present invention will be described below with reference to FIGS. 1 and 8.

First, the HSS 100 receives a UAR message including an IP address and a URI of a user terminal (910). Thereafter, the HSS 100 determines whether the user is a VoIP service subscriber (920), and if not a VoIP service subscriber, follows the UAR message processing procedure 990 specified in the 3GPP standard TS29.228. If the corresponding user is a VoIP service subscriber, the HSS 100 analyzes 930 a User-Authorization-Type indicating what type of request the Register message requested from the user terminal requests. If the User-Authorization-Type of the UAR message is DE_REGISTRATION, which means deregistration (cancellation), then the HSS 100 follows the UAR message processing procedure 990 specified in 3GPP standard TS29.228, If it is REGISTRATION_AND_CAPABILITIES, which means registration according to the capacity, the process proceeds to process 940 of analyzing the state of the public ID.

If the PUID state, which means the state of the public ID, is Not Registered or Unregistered, which means that the user terminal is not registered, the user terminal requests registration for the first time, and thus proceeds to process “950” to perform an IP authentication procedure. . On the other hand, if the PUID state is Authentication_Pending_Flag indicating that the registration or UAR message analysis indicating the user terminal is already registered, the HSS 100 compares (945) whether the same Contact IP and the stored Contact IP address. If the contact IP is the same, the process proceeds according to the UAR message processing routine defined in the 3GPP standard (990). If not, the process proceeds to "950" to perform the IP authentication procedure.

When the IP authentication procedure is performed, the IP address and URI are transmitted to the IP authentication server (950), and whether or not IP authentication is received from the IP authentication server (960). If the IP authentication is allowed, the HSS 100 proceeds with the registration of the user terminal according to the UAR message processing routine 990. If the IP authentication is not allowed, the HSS 100 applies the error code to the UAA message for the call session. It transmits to the control part CSCF (980). If an error code is detected by the call session controller, registration of the corresponding user terminal is restricted.

The apparatus and system described above may be implemented in hardware, software, or a combination thereof. In a hardware implementation, the modules used for registration of VoIP user terminals include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing units (DSPDs), programmable logic units (PLDs), field programs. Possible gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or combinations thereof. The software may be implemented through a module that performs the functions described herein. Software code may be stored in memory units and executed by a processor. The memory unit may be implemented inside or outside the processor, in which case the memory may be coupled to the processor via various known means.

On the other hand, the method of the present invention as described above can be written in a computer program. And the code and code segments constituting the program can be easily inferred by a computer programmer in the art. In addition, the written program is stored in a computer-readable recording medium (information storage medium), and read and executed by a computer to implement the method of the present invention. And the recording medium includes all types of recording media (intangible medium such as a carrier wave as well as tangible media such as CD and DVD) readable by a computer.

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

1 is a block diagram of a VoIP user terminal registration device and an IP authentication server according to the present invention.

2 is a related network diagram of an embodiment of an IMS environment to which the present invention is applied.

3 is a flowchart illustrating a VoIP user terminal registration method according to the present invention.

4 is a detailed flowchart of a user terminal authentication process illustrated in FIG. 3.

FIG. 5 is a detailed flowchart of the user terminal authentication process illustrated in FIG. 3.

6 is a flowchart illustrating a VoIP user terminal registration method according to the present invention performed in the IP authentication server.

7 is a flowchart illustrating an IP conversion process using an IP conversion server in a user terminal registration method according to the present invention.

8 is a message flow diagram in an IMS environment according to an embodiment of the present invention.

9 is a flowchart illustrating a method for registering a user terminal according to an embodiment of the present invention.

Claims (14)

delete In the method of registering a Voice over Internet Protocol (VoIP) user terminal in an IP Multimedia Sub-System (IMS) environment, Receiving a user authentication request message including an IP address and a Uniform Resource Identifier (URI) of the user terminal from a call session controller (CSCF); Analyzing the user authentication request message; Authenticating the user terminal according to a result of analyzing the user authentication request message; And transmitting a user authentication response message to the call session controller (CSCF) according to whether the user terminal is authenticated. The step of authenticating the user terminal, Determining whether the IP address is included in an IP address band corresponding to the URI; Authenticating the user terminal according to a result of determining whether the IP address is included; VoIP user terminal registration method comprising a. In the method of registering a VoIP user terminal in an IMS environment, Receiving a user authentication request message including an IP address and a Uniform Resource Identifier (URI) of the user terminal from a call session controller (CSCF); Analyzing the user authentication request message; Authenticating the user terminal according to a result of analyzing the user authentication request message; And transmitting a user authentication response message to the call session controller (CSCF) according to whether the user terminal is authenticated. The step of authenticating the user terminal, Transmitting the IP address and the URI of the user terminal to an IP authentication server; Determining, by the IP authentication server, whether the IP address is included in an IP address band corresponding to the URI; Authenticating, by the IP authentication server, the user terminal according to a determination result of including the IP address; Receiving whether the user terminal is authenticated with IP from the IP authentication server; Authenticating the user terminal according to the received IP authentication; VoIP user terminal registration method comprising a. The method according to claim 2 or 3, Analyzing the user authentication request message, And registering the VoIP service of the user terminal by using the received user authentication request message. The method according to claim 2 or 3, Analyzing the user authentication request message, And a pre-stored IP address and the IP address included in the user authentication request message. The method according to claim 2 or 3, Transmitting the IP address of the user terminal to an IP conversion server; Receiving the converted IP address from the IP conversion server; Updating the IP address with the translated IP address VoIP user terminal registration method further comprising. In the method of registering a VoIP user terminal in an IMS environment, Receiving an IP address and a URI of the user terminal from a subscriber information management server (HSS); Determining whether the IP address is included in an IP address band corresponding to the URI; Transmitting, to the subscriber information management server (HSS), whether or not the user terminal is authenticated according to a result of determining whether the IP address is included; VoIP user terminal registration method comprising a. delete An apparatus for registering a VoIP user terminal in an IMS environment, A message receiver for receiving a user authentication request message including an IP address and a URI of the user terminal from a call session controller (CSCF); A message analyzer for analyzing the user authentication request message; A user terminal authenticator configured to authenticate the user terminal according to an analysis result of the message analyzer; Including a message transmitting unit for transmitting a user authentication response message to the call session control unit (CSCF) according to the authentication result of the user terminal authentication unit, The user terminal authentication unit, An IP verification unit that determines whether the IP address is included in an IP address band corresponding to the URI, And determine whether the user terminal is authenticated according to a determination result of the IP verification unit. An apparatus for registering a VoIP user terminal in an IMS environment, A message receiver for receiving a user authentication request message including an IP address and a URI of the user terminal from a call session controller (CSCF); A message analyzer for analyzing the user authentication request message; A user terminal authenticator configured to authenticate the user terminal according to an analysis result of the message analyzer; Including a message transmitting unit for transmitting a user authentication response message to the call session control unit (CSCF) according to the authentication result of the user terminal authentication unit, The user terminal authentication unit, Transmitting the IP address and the URI of the user terminal to an IP authentication server, and "the IP authentication server determines whether the IP address is included in an IP address band corresponding to the URI and authenticates the user terminal; Including the communication unit for receiving whether the "in IP authentication" from the IP authentication server, And determine whether the user terminal is authenticated according to the received IP authentication. The method according to claim 9 or 10, The message analyzer, And confirming whether the user terminal subscribes to a VoIP service by using the received user authentication request message. The method according to claim 9 or 10, The message analyzer, And a pre-stored IP address and the IP address included in the received user authentication request message. The method according to claim 9 or 10, Further includes an IP conversion unit, The IP conversion unit Send the IP address of the user terminal to an IP conversion server, Receiving the converted IP address from the IP conversion server, The VoIP user terminal registration device, characterized in that for updating the IP address to the converted IP address. An IP authentication server for registering a VoIP user terminal in an IMS environment, A communication unit which receives an IP address and a URI of the user terminal from a subscriber information management server (HSS), and transmits whether the user terminal is authenticated by IP to the subscriber information management server (HSS); An IP verification unit that determines whether the IP address is included in an IP address band corresponding to the URI, IP authentication server, characterized in that for determining the IP authentication of the user terminal according to the determination result of the IP verification unit.

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