KR100793435B1 - Method for managing subscribers information by call session controlling device in ims network and the call session controlling device thereof - Google Patents

Abstract

A CSCF(Call Session Control Function) in an IMS(IP Multimedia Subsystem) network and a method for managing subscriber information therein are provided to identify a terminal which uses a public user ID(Identity) and to update the subscriber information of the identified terminal. Receiving an INVITE message from an arbitrary terminal(S410), a CSCF judges whether a public user ID contained in the received INVITE message is a public user ID which is shared with another terminal(S420). If not, the CSCF identifies the arbitrary terminal using the public user ID and updates the subscriber information of the arbitrary terminal(S440). In case that it is judged that the public user ID is shared with another terminal, the CSCF confirms the private user ID of the arbitrary terminal using the public user ID and subscriber identification information, such as IP address information, contained in the header of the INVITE message, and identifies the arbitrary terminal(S430). The CSCF extracts location information from the INVITE message, and updates the subscriber information of the arbitrary terminal(S450). The CSCF executes call processing according to the received INVITE message(S460).

Description

Method for managing subscriber information in an IMS network call session controlling device and a call session controlling device thereof Method of managing subscribers information by call session controlling device in IMS network and the call session controlling device

1 is a schematic diagram showing an overall system for processing a call in an IMS network according to an embodiment of the present invention.

Figure 2 is an exemplary view showing an example of setting the authorized user ID and private user ID according to an embodiment of the present invention.

3 is an exemplary diagram of an INVITE message in accordance with a preferred embodiment of the present invention.

4 is a flowchart illustrating a process of updating subscriber information of an originating terminal by a CSCF of an IMS network according to an embodiment of the present invention.

5 is a functional block diagram showing the configuration according to the function of the CSCF of the IMS network according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10-1, 10-2, ..., 10-n: terminal

50: Call Session Control Function (CSCF)

52: P-CSCF

54: I-CSCF

56: S-CSCF

70: Home Subscriber Server

100: IMS (IP Multimedia Subsystem) Network

The present invention relates to subscriber information management, and more particularly, to a subscriber information management method in an IMS (IP Multimedia Subsystem) network call session control apparatus and a call session control apparatus.

Recently, there are not only circuit switching based communication networks such as CDMA (Code Division Multiple Access) networks, but also packet switching based communication networks, especially IP based communication. IMS network is used.

The IMS network is a communication network based on a communication network standard proposed by the 3rd Generation Partnership Project (3GPP), and provides an IP-based communication service, and mainly uses a signaling protocol such as a Session Initiation Protocol (SIP).

In the IMS network, public-user-identity and private-user-identity are used as identification information of the terminal for authentication processing and call processing of the terminal. Normally, an authorized user ID is used in a network as authentication processing, and a private user ID is used in general call processing for call, message transmission, and the like.

When n (random natural numbers) private user IDs are shared to a plurality of terminals in one authorized user ID, it is difficult to recognize the corresponding terminal using the authorized user ID for subscriber information in the network.

For example, in a call processing of an IMS network, a terminal transmits an INVITE message including its location information and its authorized user ID in a 'To' header to a call session control function (CSCF) that is a call session control device of an IMS network. send. Receiving the INVITE message, the CSCF needs to update the location information of the subscriber by using the location information of the terminal included in a specific field. When the authorized user ID is shared with a plurality of terminals, the corresponding user ID can be correctly recognized. It is impossible to update the location information of the terminal.

Therefore, in the present invention, the subscriber information in the IMS network call session control apparatus capable of updating a corresponding subscriber information by recognizing a terminal using a shared user ID shared by the call session control apparatus (ie, CSCF) of the IMS network An object thereof is to provide a management method and a call session control apparatus thereof.

Other objects of the present invention will become more apparent through the preferred embodiments described below.

According to a first aspect of the present invention for achieving the above object, in the method for the call session control device of the IMS (IP Multimedia Subsystem) network to manage the subscriber information of the terminal, different private IDs (private ID) Receiving a Session Initiation Protocol (SIP) message from a terminal using a public ID shared with another terminal; Identifying the terminal by using specific terminal information included in the header of the SIP message and the authorized user ID; And updating the subscriber information of the identified terminal by using the specific information included in the SIP message. There is provided a recording medium having recorded therein a subscriber information management method and a program for performing the method.

According to a second aspect of the present invention for achieving the above object, in the call session control apparatus of the IMS network, SIP (Session) from the terminal using the authorized user ID shared with other terminals using different private user ID A communication unit for receiving an Initiation Protocol) message; A terminal recognition unit identifying the terminal using specific terminal information included in the header of the SIP message and the authorized user ID; And an information updater for updating subscriber information of the identified terminal by using specific information included in the SIP message.

In the first or second aspect, the specific terminal information may be IP address information of the terminal.

The identifying of the terminal may include: recognizing the IP address information and the private user ID corresponding to the authorized user ID; And recognizing the terminal using the private user ID.

The apparatus may further include a storage configured to store information on the IP address and a private user ID corresponding to the authorized user ID, wherein the terminal recognition unit may extract the private user ID from the storage to recognize the terminal. .

In addition, the IP message may be an INVITE message.

In addition, the subscriber information may be stored in a home subscriber server (HSS).

The updating of the subscriber information may include extracting the specific information included in the SIP message; And transmitting identification information and the specific information about the identified terminal to the HSS.

In addition, the call session control device may be a call session control function (CSCF).

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in describing the present invention with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals regardless of the reference numerals. Duplicate explanations will be omitted.

1 is a schematic diagram showing an overall system for processing a call in an IMS network according to an embodiment of the present invention.

Referring to FIG. 1, an IMS (IP Multimedia Subsystem) network 100 is a communication network based on a communication network standard proposed by a 3rd generation partnership project (3GPP), and provides an IP-based communication service, and mainly includes a SIP (Session Initiation Protocol). Uses a signaling protocol. The IMS network 100 according to the present embodiment may be used as an auxiliary network of a mobile communication network such as a wide-band code division multiple access (WCDMA) network, which will be apparent to those skilled in the art.

The IMS network 100 includes a call session control device 50 and a home subscriber server (HSS) 70 for session control. As shown in the figure, the call session control device 50 of the IMS network 100 may be a Call Session Control Function (CSCF). Of course, it will be more apparent from the following description that not only the CSCF but also all devices controlling the call session can be implemented equally as the call session control device. Hereinafter, the call session control device 50 will be described as an example that the CSCF. The CSCF 50 registers the subscribed mobile terminal with the HSS 70 and routes the SIP signaling to the appropriate server.

As shown in the figure, the CSCF 50 may include a Proxy CSCF 52 (P-CSCF), a Serving CSCF 54 (S-CSCF), and an Interrogating CSCF 56 (I-CSCF). The P-CSCF 52 performs the same function as the SIP proxy server. The P-CSCF 52 performs compression / decompression of SIP messages, authentication and QoS measurement of bearer resources, and a SIP register request from a terminal. Performs functions such as passing to CSCF. The S-CSCF 54 controls the session for the terminal and functions to maintain session state for service maintenance. I-CSCF 54 receives the SIP request from another network and routes it to S-CSCF 56, where the address of S-CSCF 56 is obtained from HSS 70. In other words, the I-CSCF functions to forward SIP requests and responses to the S-CSCF. The P-CSCF 52, S-CSCF 56, and I-CSCF 54 will be apparent to those skilled in the art, and thus a detailed description thereof will be omitted.

The HSS 70 is developed from the Home Location Register (HLR) of mobile communication and is a centralized database for managing subscriber information. The HSS 70 performs functions such as user registration / change management, authentication, authorization, location, session routing, and billing.

The IMS network 100 is a gateway layer that connects other IMS networks with a public switched telephone network (PSTN) and other existing networks and carrier operation support systems, and SIP-based such as games, video, and group chat. The application layer may further include an application layer that provides an application and includes user service logic. Since the IMS network 100 will be apparent to those skilled in the art, a detailed description thereof will be omitted.

Terminals 10-1, 10-2,..., 10-n, hereinafter referred to as 10, are mobile communication terminals capable of processing SIP signaling. It will be more apparent through the following description that all communication devices capable of performing communication may be implemented in the same manner.

2 is an exemplary view showing an example of setting the authorized user ID and private user ID according to an embodiment of the present invention, Figure 3 is an illustration of an INVITE message according to a preferred embodiment of the present invention.

Referring to Figure 2, an example of the binding of the authorized user ID and private user ID is shown. Hereinafter, for convenience of description, two subscribers each have a private user ID 1: a first terminal having a public user ID 1 and a private user ID 2. In the following description, an example of using a second terminal having a public user identity 1 will be described.

The first terminal is a private user ID 1 and the second terminal is a private user ID 2 to perform location registration in the IMS network 100, respectively.

In the related art, only the information on the authorized user ID 1 can be recognized through the message according to the request from the terminal, and thus it is not possible to determine whether the private user ID of the terminal is the private user ID 1 or the private user ID 2. . That is, it was not possible to identify whether the terminal that made the call request is the first terminal or the second terminal.

Referring to FIG. 3, the terminal 10 subscribed to the IMS network 100 according to the present embodiment describes an authorized user ID in an INVITE message and an IP address in 'Contact' header information. Therefore, although the corresponding terminal 10 could not be correctly identified using only an authorized user ID in the related art, the CSCF 50 of the IMS network 100 according to the present embodiment has a 'in INVITE message transmitted from the terminal 10'. Contact 'header information and the authorized user ID can be used to recognize the terminal 10, it is possible to update the subscriber information of the terminal (10). The IP address of the terminal 10 may be previously stored in any one or more of the CSCF 50, the VLR (Visitor Location Register, not shown), and the HSS 70.

Here, in the present embodiment, as an example for using the IP address information as information for identifying the terminal 10, in addition to the specific information (for example, mobile identification number (MIN) number, etc.) that can identify the terminal Is included in the header of the SIP message transmitted from the terminal 10 and transmitted, the CSCF 50 recognizes the corresponding private user ID by using the specific information of the header and the authorized user ID, and accordingly The terminal can be recognized. Hereinafter, a case in which IP address information is used as identification information for identifying a terminal as described above will be described as an example.

4 is a flowchart illustrating a process of updating subscriber information of an originating terminal by a CSCF of an IMS network according to an embodiment of the present invention.

In the present embodiment, a process of processing subscriber information for an outgoing request such as a call request from an arbitrary terminal 10 will be described as an example, but in addition to the SIP message transmitted from the terminal 10 (for example, It will be more apparent through the following description that the process of updating the subscriber information by using any information included in the INVITE message) may be performed in the same or similar manner.

Referring to FIG. 4, the CSCF 50 receives an INVITE message transmitted from any terminal 10 in step 410, and in step 420, the authorized user ID included in the INVITE message is shared with other terminals. Determine whether or not.

If the shared user ID is not shared, the corresponding terminal 10 is recognized using the authorized user ID recognized in step 440, and the subscriber information of the terminal 10 is updated in step 450.

If the determination in step 420, the authorized user ID is shared, the CSCF 50 in step 430 the subscriber identification information (for example, IP address information) in the header of the INVITE message and the authorized user ID; Recognizes the corresponding private user ID, and recognizes the corresponding terminal 10 accordingly. Of course, there is no need to separately recognize the private user ID of the terminal 10 using the IP address and the authorized user ID, the terminal 10 can be immediately recognized using the IP address.

Here, if the CSCF 50 manages the IP address information and the private user ID information of the terminal 10 itself in a table form, the CSCF 50 of the terminal 10 that transmitted the INVITE message; Using the IP address information, the private user ID and the terminal 10 may be immediately recognized. Alternatively, when the VLR or the HSS 70 managing the subscriber information manages the IP address information, the CSCF 50 may recognize the corresponding terminal 10 in association with the VLR or the HSS 70.

In step 450, the CSCF 50 extracts location information included in the INVITE message and updates subscriber information of the corresponding terminal 10. For example, the CSCF 50 provides the VLR or the HSS 70 with identification information about the terminal 10 and its location information, and the VLR or HSS 70 updates the subscriber information of the terminal 10. do.

Thereafter, the CSCF 50 performs call processing according to the received INVITE message in step 460.

Here, if the subscriber information is managed in the HSS as described above, step 430 is omitted, the CSCF 50 transfers the authorized user ID and IP address information and the location information to the VLR or HSS 70, VLR or The HSS 70 may update the corresponding subscriber information by recognizing the terminal 10.

In addition, according to another embodiment different from the present embodiment, the above-described step 420, 440 may be omitted. That is, the CSCF 50 may always identify the terminal 10 using only the IP address information and the authorized user ID of the terminal 10.

5 is a functional block diagram showing a configuration according to the function of the CSCF of the IMS network according to an embodiment of the present invention.

Referring to FIG. 5, the CSCF 50 may include a storage unit 510, a terminal recognition unit 520, and an information update unit 530.

The storage unit 510 stores ID information, IP address information, and the like of authorized user IDs and private user IDs of the subscribed terminals 10. Of course, the information about the terminal 10, such as the authorized user ID, ID information for the private user ID, IP address information is stored in a separate device (for example, VLR or HSS 70, etc.), CSCF 50 may acquire the above information in association with the corresponding device.

The terminal recognizing unit 520 functions to identify the terminal 10 transmitting the SIP message such as the INVITE message. That is, the terminal 10 recognizes the terminal 10 using the authorized user ID or the private user ID in the received SIP message, or the terminal 10 using the shared authorized user ID as described above uses the IP address information for the corresponding private ID. Recognize the user ID and identify it through the recognized private user ID. Of course, when the private user ID is included in the SIP message from the terminal 10 using the shared authorized user ID, the terminal recognition unit 520 may identify the terminal 10 using only the corresponding private user ID. have.

The information updater 530 functions to update subscriber information corresponding to the corresponding terminal 10 by using terminal information such as location information included in the SIP message transmitted from the terminal 10. Since the method and process for updating the subscriber information by the CSCF 50 has been described above, a detailed description thereof will be omitted.

Here, although not shown in the drawings, the CSCF 50 of the IMS network 100 is a communication unit for communicating with other devices (eg, VLR or HSS 70, etc.) of the physically coupled IMS network 100, Another component for performing a function as a call session control device of the IMS network 100, such as a call processing unit for performing a call processing such as a telephone call and a main control unit for controlling the above-described components, may be further included. Will be apparent to those skilled in the art.

The method of the present invention as described above may be implemented in a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention is not limited to the above-described embodiment, and many variations are possible by those skilled in the art within the spirit of the present invention.

As described above, according to the present invention, an IMS network call session control apparatus (that is, a CSCF) recognizes a terminal using a shared authorized user ID and updates a corresponding subscriber information. There is an effect that can provide a subscriber information management method and session call control device in the session control device.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art that various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below And can be changed.

Claims (14)

In the method of the call session control device of the IP Multimedia Subsystem (IMS) network to manage the subscriber information of the terminal, Receiving a Session Initiation Protocol (SIP) message from a terminal using a public ID shared with another terminal using a different private ID; Identifying the terminal by using specific terminal information included in the header of the SIP message and the authorized user ID; And Updating subscriber information of the identified terminal by using specific information included in the SIP message. The method of claim 1, The specific terminal information is subscriber information management method, characterized in that the IP (IP) address information of the terminal. The method of claim 2, Identifying the terminal, Recognizing a private user ID corresponding to the IP address information and the authorized user ID; And And identifying the terminal by using the private user ID. The method of claim 1, And the SIP message is an INVITE message. The method of claim 1, And the subscriber information is stored in a home subscriber server (HSS). The method of claim 5, Updating the subscriber information, Extracting the specific information included in the SIP message; And And transmitting the identification information of the identified terminal and the specific information to the HSS. The method of claim 1, The call session control device is a subscriber information management method characterized in that the call session control function (CSCF). In the call session control apparatus of the IMS network, A communication unit for receiving a Session Initiation Protocol (SIP) message from a terminal using a shared user ID shared with other terminals using different private user IDs; A terminal recognition unit identifying the terminal using specific terminal information included in the header of the SIP message and the authorized user ID; And And an information updater for updating the subscriber information of the identified terminal by using the specific information included in the SIP message. The method of claim 8, The specific terminal information is call session control device, characterized in that the IP (IP) address information of the terminal. The method of claim 9, Further comprising a storage for storing information about the IP address and the private user ID corresponding to the authorized user ID, The terminal recognition unit extracts the private user ID from the storage unit to recognize the terminal, characterized in that The method of claim 8, And the terminal recognition unit uses the specific terminal information only when the private user IP is not included in the SIP message. The method of claim 8, And the SIP message is an INVITE message. The method of claim 8, And the subscriber information is stored in an HSS. In the recording medium in which the call session control device of the IMS network is tangibly implemented to be executed in the digital processing device for managing subscriber information of the terminal, and the program can be read by the digital processing device. Receiving a Session Initiation Protocol (SIP) message from a terminal using a shared user ID shared with other terminals using different private user IDs; Identifying the terminal by using specific terminal information included in the header of the SIP message and the authorized user ID; And And a program for executing the step of updating the subscriber information of the identified terminal by using the specific information included in the SIP message.

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