KR20040040595A - Building and transmitting method of subscriber profile of home subscriber in ip multimedia core network - Google Patents

Abstract

PURPOSE: A subscriber profile implementing and transferring method in an IP(Internet Protocol) multimedia HSS(Home Subscriber Server) is provided to facilitate searching of a subscriber database by designing an IP multimedia service subscriber profile in a hierarchical structure by services and functions. CONSTITUTION: An HSS reads system information from a database, initializes various variables and turns in a standby state to wait a message. When an SAR(Server-Assignment-Request) message is received from a CSCF(Call Session Control Function), the HSS checks whether a received public ID and a private ID are identical to those in the database. If they are identical, the HSS brings every content of a service profile where the public ID belongs. Each content is constructed in an AVP(Attribute Value Pair) form and coded and a subscriber profile is entirely transmitted through an SAA(Server-Assignment-Answer) message to the CSCF.

Description

BUILDING AND TRANSMITTING METHOD OF SUBSCRIBER PROFILE OF HOME SUBSCRIBER IN IP MULTIMEDIA CORE NETWORK}

The present invention relates to a method of establishing and delivering a subscriber profile in an IP (Internet Protocol) multimedia home subscriber server, and to a computer readable recording medium storing a program and data for realizing the method, in particular, a standard related to a mobile communication network. IP that defines and delivers information elements by establishing subscriber profiles in HSS for multimedia services in the construction of Home Subscriber Server (HSS) proposed by 3GPP (Third Generation Partnership Project) A method of constructing and delivering a subscriber profile in a multimedia home subscriber server and a computer-readable recording medium having recorded thereon a program and data for realizing the method.

Due to the development of the Internet Protocol (IP) network, standardization organizations (3GPP and 3GPP2, etc.) and operators related to the existing mobile communication networks are doing much to introduce commercial IP services, that is, to provide commercial Internet services in an IP wireless environment. 3GPP introduces the entire IP-based core network structure and proposes call session control server (CSCF) and home subscriber server (HSS) with IP multimedia service.

CSCF performs different functions depending on the network in which the mobile subscriber is located, but basically handles session control of the subscriber. HSS is a subscriber's master database and is a subscriber location of a Home Location Register (HLR) in a Public Land Mobile Network (PLMN) network based on the conventional "No.7 signaling protocol". It is a server that has all functions such as information management, call processing, authentication, and AAA (AAA: Authentication Authorization Accounting) of IP network.

The present invention makes such an HSS applicable.

In the existing circuit-based mobile communication network, the subscriber's service profile is designed based on the subscriber's unique number called International Mobile Station Identity (IMSI) in HLR. Information such as registration was stored. HLR is a Mobile Switch Center (MSC), Visit Location Register (VLR), Packet Service Gateway Device (GGSN), Packet Service Support Device (Serving GPRS Support Node: SGSN). And the subscriber profile are transmitted to related nodes through the signaling protocol of No. 7 signaling (SS7) based Mobile Application Part (hereinafter referred to as MAP) to provide voice and low level packet services.

Meanwhile, in order to receive various multimedia services in an IP network, a subscriber profile is defined based on a subscriber's unique identifier called a network access identifier (NAI) in the form of an e-mail address (called a private ID in 3GPP). HSS has been proposed to provide multimedia services through the Diameter protocol, which enables reliable transmission of surrounding CSCF and application data.

The Diameter protocol is designed as a peer-to-peer model, allowing messages to be sent and received between diameter servers. In addition, the application data is encapsulated into an Attribute Value Pair (AVP), which has enough data space to transmit a large amount of information, and is operated at a higher layer of the Stream Control Transmission Protocol (SCTP). To provide that transfer.

Since the IP multimedia service subscriber (hereinafter referred to as IM subscriber) profile contains all the subscriber's information, it is very important to design the system so that the subscriber information can be easily added, changed or deleted. In addition, it is natural to design a lot in consideration of standardization and compatibility in transferring such a large amount of information to the CSCF.

However, in the related art, there is a problem in that a method of efficiently delivering a subscriber profile in HSS and information elements thereof to the CSCF, which satisfies these requirements, has not been implemented.

Looking at the other side again with respect to the prior art as follows.

TS 29.228 and TS 29.229 proposed by 3GPP, which is involved in the European standard of asynchronous wireless communication, provide the standard protocol between CSCF and HSS, and is the diameter of the Internet Engineering Task Force (IETF). (Diameter) Defines the use of an application protocol that is based on the Base protocol and has some exceptions.

TS 29.228 describes the subscriber profile of the HSS database for IP multimedia services with the Unified Modeling Language (UML) model, which is communicated in the form of XML (eXtensible Markup Language). Are being considered as considerations for describing and standardizing them.

In TS 29.229, the user profile (AVP), which is an information component of the diameter protocol, is transferred from the HSS to the Serving-CSCF (S-CSCF), which is one of the CSCFs. It is only recommended to transfer the string as an Octet String in the form of AVP) (the string is in XML format).

Brief description of XML is as follows. XML is the next generation version of HTML, which is currently applied mainly to web applications. Basically, the sender needs an XML translator that converts a general language into XML. On the receiver side, an XML parser is used to interpret XML text. ) Is required. Of course, you must share the XML schema, the XML transformation rules, between them (online or offline).

Based on this, the problems of the prior art are briefly described as follows.

There are many difficulties (degradation, need XML converter and parser) to apply XML converter and parser which is developing web-based and flexible to core network. XML converter and parser Without (Parser) tool, user profile could not be transferred from HSS to S-CSCF.

Also, without using an XML string, the receiving party (CSCF) promises each other in advance (A: 5 byte tag, followed by B: 4 byte) to find out the user profile sent by the sending party (HSS). There was a problem that you have to do this ..).

The present invention has been proposed in order to solve the above-mentioned problems. An IP multimedia home subscriber constructing and delivering an information element for constructing subscriber profile information of an IP multimedia subscriber in an HSS and efficiently transmitting it to a CSCF node is provided. It is an object of the present invention to provide a method of establishing and delivering a subscriber profile in a server and a computer-readable recording medium that records a program and data for realizing the method.

1 is an exemplary configuration diagram of a wireless internet multimedia network to which the present invention is applied.

2A is an exemplary diagram of an internal structure and an external interface of a home subscriber server (HSS) to which the present invention is applied.

2B is an illustration of an external interface protocol stack of a home subscriber server (HSS) to which the present invention is applied.

3 is a diagram illustrating an embodiment of an IP multimedia subscriber profile table inside a home subscriber server according to the present invention;

FIG. 4 is a diagram illustrating an embodiment of a correlation structure of an IPP (Attribute Value Pair) according to the present invention. FIG.

5A and 5B illustrate an embodiment of a format of an IP multimedia (IM) subscriber profile information element (AVP) in accordance with the present invention.

6 is a flow diagram of an embodiment of a procedure for encoding and transmitting IP multimedia subscriber profile information elements (AVPs) in accordance with the present invention.

* Explanation of symbols for the main parts of the drawings

101: mobile node 102: wireless access network

103: public land mobile communication network 104: packet public data network

105: mobile switching center / visit location register 106: public switched telephone network

107: home subscriber server 108: call / session control server

109: SIP application server 110: IP multimedia core network

The method according to the present invention for achieving the above object, in the subscriber profile construction and delivery method applied to the IP multimedia (IM) home subscriber server (HSS), subscriber personal identification information, the service information of the subscriber, the service Triggering with respect to the public identifier information, information required for control in a call / session control server (CSCF) for the service, trigger spy (SPI) information based on the control information, and the control information a first step of constructing a subscriber profile table representing hierarchically dividing information on an application server (AS) to be triggered; And a second step of receiving a subscriber profile transmission request, extracting corresponding data from the constructed subscriber profile table, configuring the information in the form of an information element (AVP), encoding the encoded data, and transmitting the encoded data to the call / session control server (CSCF). It features.

In addition, another method according to the present invention is a subscriber profile delivery method applied to an IP multimedia (IM) home subscriber server (HSS), wherein the home subscriber server (HSS) is the subscriber basic information, the service profile information of the subscriber, Call / call for a subscriber profile configured by hierarchically dividing public identifier (ID) information in the service, filter criterion information for the service, trigger information for the filter criterion, and application server information for the filter criterion A first step of receiving a request for transmission to a session control server (CSCF); A second step of the home subscriber server (HSS) checking the status of the subscriber profile transmission request; As a result of the checking in the second step, if a server assignment request (SAR) message according to subscriber registration is received from the CSCF, the home subscriber server (HSS) authenticates the identification information received through the SAR message. A third step of extracting the contents of the profile to which the received Public ID belongs and configuring the information in the form of an information element (AVP) to transmit to the CSCF as a Server Assignment Answer (SAA) message; And a message for requesting a profile change notification according to a change of subscriber profile information stored in the home subscriber server (HSS) as a result of the check in the second step, for the changed profile of the corresponding public ID. And a fourth step of selectively extracting a profile from a database in which the profile is stored and configuring the information element (AVP) in a form of a push profile request (PPR) message to the related CSCF.

In addition, the present invention provides a mobile communication system comprising: a basic table for identifying an individual subscriber using IP multimedia (IM); A service table for indicating information on a service used by the subscriber individual based on the basic table; A public identifier table for indicating public identifier (ID) information for the service appearing in the service table; A filter criteria table for indicating information required for control in a call / session control server (CSCF) related to a service in the service table; A trigger table for representing trigger SPI information based on the filter reference table; And a computer-readable recording medium on which data having an application server table for indicating information and processing of an application server AS to be triggered corresponding to the filter reference table is recorded.

In addition, the present invention, the user data for configuring the associated public identification list information and filter criteria information in a Grouped type, together with information about the subscriber and information about the service used by the subscriber to represent the IP multimedia subscriber profile Information element (AVP); The public at a call / session control server utilizing the subscriber profile and the public identifier (ID) information subscribed to the service to indicate public identification list information appearing in the user data information element (AVP). A public identification list information element (AVP) for configuring Barring-Indication information indicating whether a session is established for an identifier (ID) as a grouped type; Priority, condition type CNF, trigger SPI and corresponding application corresponding to the filter criteria of the service used by the subscriber to indicate the filter criteria information appearing in the user data information element (AVP). A filter criterion information element (AVP) constituting application server information such as an identifier, a name, an address of a server, basic handling, and service information in a grouped type; And Condition Negated information, Group ID information, Contents Mask information, and SIP to indicate trigger SPI information appearing in the filter criterion information element AVP. Group method information, SIP header information, SIP header content information, session case information, session description line information, and session description content information A computer-readable recording medium having data having a trigger information element (AVP) configured in a (Grouped) type is recorded.

The present invention also provides a home subscriber server equipped with a processor for controlling subscriber personal information, service information of the subscriber, public identifier information for the service, and control of a call / session control server (CSCF) for the service. Subscriber profile table that hierarchically divides necessary information, trigger SPI information based on the control information, and information on an application server to be triggered with respect to the control information A first function to connect to; And a second function of receiving a subscriber profile transmission request, extracting corresponding data from the subscriber profile table, configuring the information in the form of an information value (AVP), encoding the same, and transmitting the encoded data to the call / session control server (CSCF). A computer readable recording medium having a program recorded thereon is provided.

In addition, the present invention, the home subscriber server equipped with a processor, subscriber basic information, service profile information of the subscriber, public identifier (ID) information in the service, filter reference information for the service, the filter A first function for receiving a request for transmission to a call / session control server (CSCF) for a subscriber profile having hierarchically divided trigger information on a criterion and application server information on the filter criterion; A second function of checking the status of the subscriber profile transmission request; As a result of the check of the second function, if the profile request (SAR) message according to subscriber registration is received from the CSCF, the contents of the profile to which the received public ID belongs by authenticating the identification information received through the SAR message. A third function of extracting and constructing the information in the form of an information element (AVP) and transmitting it to the CSCF as a profile request answer (SAA) message; And a message for requesting a profile change notification according to the information change of the subscriber profile as a result of the check of the second function, selectively extracting from the database storing the subscriber profile with respect to the changed profile of the corresponding public ID. A computer readable recording medium having a program recorded thereon for realizing a fourth function configured in the form of an information element (AVP) to be transmitted as a profile change request (PPR) message to the related CSCF.

The subscriber profile construction according to the present invention for achieving the above object consists of a part of separating the subscriber profile into a hierarchical structure based on one subscriber and a portion of sharing a proper key value therebetween.

In addition, the configuration and delivery of subscriber profile information elements according to the present invention for achieving the above object is to specify each of the subdivided profiles into profile types, actual lengths, and actual meaningful values for transmission of the subdivided subscriber profiles to the other nodes. It is divided into a portion generated and encoded in the AVP form, and the relative node is a portion for decoding the actual subscriber profile through the AVP type.

In summary, the present invention proposes a structure of a database for an IP multimedia service, and presents a method other than XML in a method of delivering it to a CSCF. Eliminates the difficulty of applying the XML converter and parser under development to the core network (degradation, requires an XML converter and parser), and the user profile without the tools of the XML converter and parser. Profile) can be transferred from HSS to S-CSCF.

In addition, even without using an XML string, the receiving side CSCF must make an appointment with each other in advance to find out the user profile sent by the transmitting side HSS. Therefore, in order to alleviate this difficulty, the user profile is divided into standard AVP protocols, which are designed and transmitted.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary configuration diagram of a wireless internet multimedia network to which the present invention is applied.

That is, FIG. 1 illustrates a structure of a 3GPP IP multimedia core network to which the present invention is applied, which includes a mobile node 101, a wireless access network (RAN) 102, a public land mobile communication network (PLMN, 103), and packet air data. Network (GPRS, 104), mobile switching center / landing location register (MSC / VLR, 105), public switched telephone network (PSTN, 106), home subscriber server (HSS, 107), CSCF (108), SIP (SIP) applications Server (AS) 109 and IP multimedia core network 110.

The mobile node (UE) (hereinafter referred to as UE) 101 represents a user terminal for using an IP multimedia service, ie, voice, video, location confirmation, instant messaging service, and the like. A radio access network (RAN) 102 is composed of a Node B in charge of accessing a mobile terminal through a radio section and a radio network controller (RNC).

Wireless Access Network (RAN), Mobile Switch Center (MSC) and Visit Location Register (VLR) 105 and HSS 107 for existing Circuit-based voice services. Is connected to a public land mobile communication network (PLMN) 103. The MSC 105 is also connected to an existing Public Switched Telephone Network (PSTN) 106.

On the other hand, for IP-based multimedia data service, the Packet Switched Data Network (GPRS, 104) is composed of GGSN and SGSN, and transfers traffic data between a wireless access network and an external network or an IP multimedia core network. It is also responsible for connecting to the HSS 107 through the MAP protocol for registration, authentication, authorization verification of the subscriber.

The CSCF 108 is in charge of the multimedia session control function using the UE 101 and the Session Initiation Protocol (SIP) for the IP multimedia service. The CSCF 108 also communicates using the HSS 107 and Diameter protocols for registration, authentication, authorization verification, download of subscriber profiles, and the like, for another IP multimedia subscriber network. It is also connected to. The SIP application server 109 is connected with the CSCF 108 and the HSS 107 for application services.

2A is an exemplary diagram of an internal structure and an external interface of a home subscriber server (HSS) to which the present invention is applied.

HSS is a computer system with a UNIX system, which is connected to a local area network (LAN), and is based on Ethernet and Asynchronous Transfer Mode (ATM). Is connected based on In addition, the interface with the customer center and the operator 203 is also connected to the TCP / IP (TCP / IP) via Ethernet.

The logical structure inside the HSS can be largely divided into a functional processing configuration module (hereinafter referred to as 3G HLR, 201) and an IP multimedia service processing module (hereinafter referred to as IM HSS, 202) of the existing HLR.

The 3G HLR 201 is a part that processes the interface matching protocol with the outside, the subscriber database, the part of the subscriber's authentication processing function, and in conjunction with these parts, the location registration / deletion of the mobile subscriber based on IMSI, authentication, intelligent network services, It consists of a part of subscriber information management function that performs additional service functions.

The IM HSS 202 handles the Diameter protocol with the CSCF, the TCP / IP protocol with the Customer Center and the SIP application server, the subscriber database, the subscriber authentication processing, and the NAI type individuals ( Private) It consists of mobility management (registration, authentication, authorization verification) function part of mobile subscriber based on ID. Here, the subscriber authentication processing part is configured to use the same as the 3G HLR 201.

2B is an example of an external interface protocol stack of a home subscriber server (HSS) to which the present invention is applied.

HSS handles PLMN network, GPRS network and existing No.7 based MAP protocol for 3G HLR 201 function processing, and CSCF and IP based diameters for IM HSS 202 function processing. Diameter) consists of the parts that handle the protocol.

3 is a diagram illustrating an embodiment of an IP multimedia subscriber profile table inside a home subscriber server according to the present invention.

3 is an embodiment block diagram illustrating an IM subscriber profile table in an IM HSS 202 and an association within the table in accordance with the present invention. The IM subscriber profile table includes a base table (hereinafter referred to as R_IMSUB_DATA table, 301), service table (hereinafter referred to as R_SERPRO_DATA table, 302), public identifier table (hereinafter referred to as R_PUBID_DATA table, 303), filter criteria table (hereinafter referred to as , R_FILCRI_DATA table, 304), a trigger table (hereinafter referred to as R_TRISPI_DATA table, 305) and an application server table (hereinafter referred to as R_APPSER_DATA table, 306).

The R_IMSUB_DATA table 301 is a basic data table of an IM subscriber and includes a private ID field, an IMSI field, and an IMSUB primary key field. In detail, the R_IMSUB_DATA table 301 uses a private ID, which is a unique identifier of a subscriber, as a priority key, a nibble type IMSI field for subscriber authentication, and an IMSUB primary key field for an adjacent table index. It consists of.

Since a subscriber having one private ID can have several services, the R_SERPRO_DATA table 302 is separated and configured. The R_SERPRO_DATA table 302 includes an IMSUB Primary Key field, a SERPRO Primary Key field, a Number of Public ID field, and a Number of Filter Criteria field. .

In more detail, the R_SERPRO_DATA table 302 is a service profile data table. The SERPRO primary key is a priority key and has a 1: n correspondence with the IMSUB primary key of the R_IMSUB_DATA table 301. . In addition, one service profile may have several initial filter criteria, and several public IDs may exist. The SERPRO Primary Key is used as an index between them.

The R_PUBID_DATA table 303 is a public ID table and includes a SERPRO primary key field, a public ID field, a private ID field, and a barring indication field.

In more detail, the R_PUBID_DATA table 303 has a public ID as a priority key, has a 1: n correspondence with the SERPRO primary key of the R_SERPRO_DATA table 302, and has a private ID field and a CSCF ( A barring indication field is used to determine whether a session is established for the corresponding public ID.

The R_FILCRI_DATA table 304 is the Initial Filter Criteria table for one service profile, which includes the SERPRO Primary Key field, the FILCRI Primary Key field, and the Number of Trigger SPI. Field, Priority field, Condition Type CNF (Conjunctive Normal Form) field, and Application Server ID field.

In detail, the R_FILCRI_DATA table 304 has a FILCRI primary key as a priority key and corresponds to a SERPRO primary key of the R_SERPRO_DATA table 302 as 1: n. In addition, it consists of a Priority field indicating the priority of the Filter Criteria, a Condition Type CNF field indicating the SPI expression method, and an Application Server ID field. .

The R_TRISPI_DATA table 305 is a Trigger SPI table, which is a FILCRI Primary Key field, Trigger SPI ID field, Condition Negated field, Group ID field, and Content Mask. Mask field, SIP method field, SIP header field, SIP header content field, session case field, session description line field and session description content Description Content) field.

Specifically, the R_TRISPI_DATA table 305 has a FILCRI primary key as a priority key and corresponds to the FILCRI primary key of the R_FILCRI_DATA table 304. The contents mask represents an indication of the SPI included in units of bits.

The R_APPSER_DATA table 306 is a table related to information and processing of the application server that CSCF should trigger. The application server ID field, application server name field, application Server (Application Server) Includes an IPv6 (Internet Protocol Version 6) Address field, a Default Handling field, and a Service Information field.

In detail, the R_APPSER_DATA table 306 has an application server ID as a priority key and corresponds 1: 1 with an application server ID of the R_FILCRI_DATA table 304. It consists of a Name (Name), an Address (Address) of a Server, and a Default Handling field and a Service Information field indicating session processing when no processing is performed to the Application Server.

Once again with respect to Figure 3 is as follows.

3 is a database structure of a subscriber profile, in which an IM service subscriber has a unique R_IMSUB_DATA table 301. For IM service subscribers, it is identified by a private ID, which is an email address structure called NAI [IMPI@homedomain.com]. This is the same as the phone number of the current mobile phone is unique.

The IMSI field in the R_IMSUB_DATA table 301 exists to perform authentication or the like in association with an existing telephone number.

There can be several R_SERPRO_DATA tables 302 (recommended 1-20) per R_IMSUB_DATA table 301, which means that one subscriber can subscribe to several services (messenger, video phone, Internet service, etc.). In this service, there is one R_SERPRO_DATA table 302).

There may be several R_PUBLIC_DATA tables 303 per one R_SERPRO_DATA table 302, that is, one service (recommended 1-20), and several R_FILCRI_DATA tables 304 may be present (recommended 1-10).

The fact that there are several R_PUBLIC_DATA tables 303 in one R_SERPRO_DATA table 302 can be subscribed to several public IDs [in the form of SIP: //IMPU1@homedomain.com] in one service (messenger). It is a baby.

The R_FILCRI_DATA table 304 is, in a word, information necessary for S-CSCF to control a service.

The Barring Indication field of the R_PUBLIC_DATA table 303 is "TRUE / FALSE" type. If "TRUE", the S-CSCF does not set up a multimedia session for the corresponding public ID. .

There may be multiple R_TRISPI_DATA tables 305 for one R_FILCRI_DATA table 304 (recommended 0-25), and one R_APPSER_DATA table 306 exists.

The Priority field of the R_FILCRI_DATA table 304 indicates the priority of several Initial Filter Criteria (for example, 10 Initial Filter Criteria to Priority). Filtering accordingly) and the ConditionType CNF field indicate how to group SPIs (R_TRISPI_DATA table 305) (AND set or Or set).

As described above, 0 to 25 R_TRISPI_DATA tables 305 may exist per one R_FILCRI_DATA table 304, and the Condition Negated field indicates whether or not to use "NOT" logic. The Group ID field indicates a group number between 1 and 25.

The Contents Mask field of the R_TRISPI_DATA table 305 includes Trigger SPI instances (SIP Method, SIP Header, Session Case, Session Description). Bit mask information for selecting).

For example, the first tuple of the R_TRISPI_DATA table 305 has a Group ID value of 3 and a ContentsMask value of 1 (1 if SIP Method). The second tuple may have a Group ID value of 1 and a ContentsMask value of 2 (or SIP Header if 2). . The third tuple has a Group ID value of 3 and a ContentsMask value of 3 (Session Case). The fourth tuple may have a Group ID value of 1 and a ContentsMask value of 4 (Session Description if 4). In this case, S-CSCF performs filtering with conditions for each group ID.

Here, the SIP method represents a method of the SIP protocol (INVOTE, MESSAGE, ...). The SIP header represents a header of the SIP protocol ("from", "to"). It also has Content (Content = "joe"). The Session Case indicates the type of session ("Originationg", "Terminating", "Terminating_Unregistered"). The session description indicates the content of the session description protocol included in the SIP method.

One R_APPSER_DATA table 306 exists for one R_FILCRI_DATA table 304. When the S-CSCF filters with the information of the R_TRISPI_DATA table 305, if it satisfies the condition, it passes the service control. The main information is about Application Server (AS). (Name, ID, Address) The Default Handling field is flag information on whether to continue the session or terminate the session when the S-CSCF cannot visit the AS. The Service Information field is This is an optional field and is information that enters the SIP request body when passed from the S-CSCF to the AS.

4 is a diagram illustrating an embodiment of a correlation structure of an IP multimedia subscriber profile information element (AVP) according to the present invention.

4 is a diagram illustrating a correlation structure of an information element (AVP) of an IP multimedia subscriber profile according to the present invention. Based on the hierarchical database table in FIG. 3, the minimum AVP was defined and used according to the Augmented Backus-Naur Form (ABNF) grammar.

The user data information element (hereinafter referred to as User-Data-AVP) 401 is generated including the R_IMSUB_DATA table 301 and the R_SERPRO_DATA table 302, and declares Type as 'Grouped' so that at least 1 It is defined to include at least one public identification list information element (hereinafter, referred to as Public-Identity-List-AVP, 402) and filter criteria information element (hereinafter referred to as Filter-Criteria-AVP, 403).

The Public-Identity-List-AVP 402 defines an R_PUBID_DATA table 303, which may exist in one or more service profiles, in the AVP form, and declares the type as 'Grouped', so that the corresponding service is located therein. The public ID AVP subscribed to the profile and the CSCF are defined to include a Barring-Indication AVP that indicates whether a session is established for the public ID.

The Filter-Criteria-AVP 403 defines one or more R_FILCRI_DATA tables 304 present in one service profile in the form of AVP. The type is 'Grouped' and includes each field of the R_FILCRI_DATA table 304. Do it. In addition, since the R_APPSER_DATA table 306 has a 1: 1 correspondence with the application server ID of the R_FILCRI_DATA table 304, all fields of the R_APPSER_DATA table 306 are also included in the Filter-Criteria-AVP 403. Defined.

The trigger information element (hereinafter referred to as Trigger-SPI-AVP, 404) defines an R_TRISPI_DATA table 305 in AVP form, in which several can exist in one initial filter criterion (Initial Filter Criteria). 'Grouped' and include AVPs of each field of the R_TRISPI_DATA table 305.

5A and 5B illustrate an embodiment of a format of an IP multimedia subscriber profile information element (AVP) according to the present invention.

5A and 5B are IM subscriber profile AVPs according to the present invention, each AVP is a Vendor ID indicating a AVP code, a length, a Vendor to which the AVP is applied, and an actual value. Data).

FIG. 5A shows a bit form of an AVP header, and FIG. 5B shows an AVP code, a type, and an option flag of each AVP. The V bits of the option flag are used to mean that AVPs are used exclusively for a particular vendor.

Since the present invention uses the diameter protocol, the form shown in FIG. 5A is similar to the header form of the diameter protocol. However, in the practical aspect, as shown in FIG. 5B, the subscriber profile information elements (AVPs) are included.

In the header of FIG. 5A, the AVP flag next to the AVP code includes bits indicated by "V", "M", "P", "r", and so on. Indicates whether the optional Vendor ID used is indicated, the "M" bit MUST be set, and the "P" bit is the end-to-end to which information elements are passed. It indicates the need for encryption for security between to-ends, and the "r" bit is a reserved bit and should not be used and should be set to 0, which may be defined and used later.

6 is a flowchart illustrating an encoding and transmission procedure of IP multimedia subscriber profile information elements (AVPs) according to the present invention.

6 is a flowchart illustrating a procedure of encoding and transmitting subscriber profile AVPs to a CSCF according to the present invention. When the IM subscriber profile information is downloaded from the HSS to the CSCF, when the HSS receives a profile request from the CSCF at the same time as the subscriber registration (Server-Assignment-Request (SAR)) and when the subscriber profile information is changed by the HSS operator. (Push-Profile-Request: PPR below).

The HSS server first reads the system information from the database at startup (601), initializes various variables (602), and then enters the waiting state for a message (603).

Then, when the message is received, it is checked 604 what the received message is.

As a result of confirming the received message, when receiving an internal PPR transmission request, only the changed profile of the corresponding change request Public ID is obtained (605), and then configured and encoded in an AVP form (606). In operation 607, only the changed subscriber profile is transmitted through the PPR message to the CSCF.

After confirming the received message, if the SAR message, IP multimedia subscriber registration request, is received from CSCF, first check whether the received Public ID and Private ID match those in the database. (608).

If the result of the check is matched, all contents of the service profile to which the corresponding public ID belongs are retrieved (609). Subsequently, each content is configured and encoded in an AVP form (610), and the entire subscriber profile is transmitted through a Server-Assignment-Answer (SAA) message to the CSCF (611).

Check that the received Public ID and Private ID match those in the database (DB), and that the Public ID and Private ID received in the SAR message are in the DB. If not, an ID mismatch is sent to the CSCF via the SAA (612).

As described above, the method of the present invention may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.). It can be implemented in the form of a data structure based on a computer and stored in a computer-readable recording medium.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

According to the present invention as described above, by designing the IP multimedia service subscriber (hereinafter referred to as IM subscriber) profile in a hierarchical structure for each service and function, it is easy to search the subscriber database.

In addition, the present invention has been proposed in consideration of compatibility with the existing HLR and is composed of independent modules, there is an effect excellent in portability and compatibility.

In addition, the present invention, in delivering the subscriber profile information to the CSCF to provide a service to the user, there is an effect that can efficiently transmit the subscriber profile by dividing each subdivided subscriber profile into respective information elements.

In addition, the present invention, by managing the service profile by dividing the table into several tables, and also to make an association between them, the application can easily retrieve the data of the subscriber, and furthermore, in delivering this to the adjacent node There is an effect that can maintain compatibility with existing standards.

In addition, the present invention, by configuring the subscriber profile table configuration and the subscriber profile used in the information element of the standardized AVP form, it can be applied to the change to the HSS due to the addition of the IP multimedia service to the existing HLR in service. It has an effect.

In addition, the present invention has the ease of performance and maintenance of the HSS system by hierarchically and efficiently designing a profile table of an IM subscriber in the HSS server based on a private ID to facilitate IP multimedia service. It can be effective.

In addition, the present invention is configured by dividing the implemented IM subscriber profile into standardized information elements in the AVP form to transmit between nodes, thereby making the transmission of the subscriber profile flexible, thereby efficiently processing encoding / decoding. In addition, there is an effect that can accurately find and inform the part where an error occurred during decoding.

In addition, the present invention proposes a method of constructing an IM subscriber profile table and a method of configuring a subscriber profile with information elements in a standardized AVP form, so that an existing HLR in service can be extended to HSS through the addition of an IP multimedia service. There is an effect that can be easily implemented.

Claims (29)

In the subscriber profile construction and delivery method applied to IP Multimedia Home Subscriber Server (HSS), Based on subscriber personal information, service information of the subscriber, public identifier information on the service, information necessary for control in a call session control function (CSCF) for the service, and the control information Trigger Subscriber profile table that shows the service point of interest (SPI) information and information about the application server (AS :) to be triggered in relation to the control information in a hierarchical manner. A first step of making; And A second step of receiving a subscriber profile transmission request, extracting the corresponding data from the constructed subscriber profile table, constructing it in the form of an information element (AVP), encoding it, and transmitting it to the call / session control server (CSCF). Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. The method of claim 1, The first step is, A third step of constructing a base table of the subscriber profile table for identifying a subscriber individual using the IP multimedia (IM); A fourth step of constructing a service table of the subscriber profile table indicating information on a service used by the subscriber individual based on the basic table; A fifth step of constructing a public identifier table of the subscriber profile table for indicating public identifier (public identifier (Identifier)) information for the service appearing in the service table; A sixth step of constructing a filter criteria table of the subscriber profile table indicating information required for control in the call / session control server (CSCF) for the service in the service table; A seventh step of constructing a trigger table of the subscriber profile table for indicating trigger SPI information based on the filter criteria table; And An eighth step of configuring an application server table of the subscriber profile table indicating information and processing on the application server (AS) to be triggered in response to the filter criteria table Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. The method of claim 2, The base table is, A private ID field representing a subscriber's unique identifier, Private ID, is a priority key, and an International Mobile Station Identity (IMSI) field and a neighbor table in nibble form for authentication of a subscriber. IMSUB Primary Key field for indexes Subscriber profile building and delivery method in the IP multimedia home subscriber server comprising a. The method of claim 2, The service table, An IMSUB Primary Key field for indexing with the base table; A SERPRO Primary Key field for indicating a service corresponding to the subscriber; A public ID number field for indicating the number of public IDs subscribed to the service; And Filter Criteria Count field to indicate the number of Filter Criteria included in the service Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. The method of claim 4, wherein The service table, In order to enable the subscriber having one private ID to have multiple services, the IP multimedia home subscriber is a service profile data table which is separated from the base table and configured to correspond to the service of the subscriber. How to build and deliver subscriber profiles on the server. The method of claim 4, wherein The service table, A method of building and delivering a subscriber profile in an IP multimedia home subscriber server, wherein the SERPRO primary key field is a priority key and has a correspondence relationship with an IMSUB primary key of the basic table in a 1: n manner. . The method of claim 2, The public identifier table, A Public ID field for indicating public ID information; A SERPRO primary key field for indicating a service corresponding to the subscriber; A private ID field for indicating a private ID of the subscriber; And Barring Indication field that enables the CSCF to determine whether to establish a session for the corresponding Public ID. Subscriber profile building and delivery method in the IP multimedia home subscriber server comprising a. The method of claim 7, wherein The public identifier table, The public ID field is a priority key and a subscriber profile establishment and delivery method in an IP multimedia home subscriber server, which has a corresponding relationship of 1: n with a SERPRO primary key field of the service table. The method of claim 2, The filter criteria table, The FILCRI Primary Key field with Filter Criteria information is a priority key, and corresponds to 1: n with the service table through the SERPRO Primary Key field. Priority field to indicate priority, Condition Type CNF field to express SPI (Service Point of Interest), and Application Server (AS) ID field Subscriber profile building and delivery method in the IP multimedia home subscriber server comprising a. The method of claim 9, The filter criteria table, IP multimedia home characterized by indicating the priority in a plurality of initial filter criteria (Initial Filter Criteria) through the Priority field, and how to group the SPI through the Condition Type CNF field How to build and deliver subscriber profile in subscriber server. The method of claim 2, The trigger table, FILCRI Primary Key field, Trigger SPI ID field, Condition Negated field, Group ID field, ContentsMask field, SIP: Session Initiation Protocol (SIP) method ( A method field, a SIP header field, a SIP header content field, a session case field, a session description line field, and a session description content field. , The FILCRI Primary Key field is a priority key, and corresponds to a FILCRI primary key of the filter criteria table, and a Contents Mask indicates an indication of an SPI included in bits. Subscriber profile construction and delivery method in IP multimedia home subscriber server, characterized in that. The method of claim 11, The Contents Mask field is Trigger (Trigger) Subscriber profile establishment and delivery method in IP multimedia home subscriber server, characterized in that the bit mask information for selecting the SPI instances (Instance). The method of claim 11, The trigger table, At least one per filter criteria table exists, and a ConditionNegated field indicates whether or not to use NOT logic, and a Group ID field indicates a group number. How to build and deliver subscriber profile in IP multimedia home subscriber server. The method of claim 2, The application server table, An application server ID field indicating an application server ID; A name field indicating a name of the application server; An address field indicating an address of the application server; A Default Handling field indicating session processing when the processing to the application server is not performed; And Service Information field Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. The method of claim 14, The application server table, The application server ID field is a priority key, and the subscriber profile is constructed and delivered in the IP multimedia home subscriber server, which corresponds to the filter criteria table 1: 1 through the application server ID field. Way. The method of claim 2, The application server table, One for each of the filter criteria tables, And the subscriber profile in the IP multimedia home subscriber server characterized in that the CSCF has information about the application server which passes the service control when the condition is satisfied after filtering with the information of the trigger table. Delivery method. The method according to any one of claims 1 to 16, The second step, A ninth step of performing system information collection and variable initialization and waiting to process the message upon receipt of the message; A tenth step of receiving a request message for subscriber profile transmission and confirming a status of the subscriber profile transmission request; As a result of the check of the tenth step, if a profile request (SAR: Server-Assignment-Request) according to subscriber registration is received from the CSCF, the received public ID and private ID are determined by the information in the subscriber profile table. An eleventh step of extracting the contents of the profile to which the corresponding Public ID belongs in response to the request for a matching profile, constructing it in the form of an information value attribute (AVP) and transmitting it to the CSCF; And As a result of the check of the tenth step, if the change request message according to the change of the subscriber profile information, the changed profile of the corresponding change request Public ID is extracted from the subscriber profile table and configured in the form of the information element (AVP). Twelfth Steps to Send to CSCF Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. The method of claim 17, The information element (AVP) of the subscriber profile, A trigger information element configured in the form of an information element (AVP) including the contents of each field of the trigger table present in at least one initial filter criterion; It is configured in the form of an information element (AVP) including the contents of each field of the filter criteria table existing in at least one service profile and the contents of each field of the application server table having a corresponding relationship with the filter criteria table. Filter criteria information element; A public ID information element (AVP) subscribing to the service profile to at least one public ID table present in at least one service profile and indicating whether to establish a session for the public ID in the CSCF; A public identification list information element comprising a Barring-Indication information element (AVP); And A user data information element having contents of the basic table and the service table and including the filter criteria information element and the public identification list information element Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. The method of claim 18, The filter criteria information element, And the trigger information element as a lower information element to have information on the trigger information element. The method of claim 17, The subscriber profile information element, A subscriber profile construction and delivery method in an IP multimedia home subscriber server, characterized in that the configuration type of lower information elements is grouped. The method of claim 17, The eleventh step, As a result of confirming the status of the subscriber profile transmission request, if it is based on a profile request (SAR) message according to subscriber registration from the CSCF, the received public ID and private ID are compared with the data in the subscriber profile table. A thirteenth step of checking for a match; As a result of the check in step 13, if the received public ID and private ID do not match the data in the subscriber profile table, a profile request response (SAA: Server-Assignment-Answer) is transmitted to the CSCF. 14) notifying the ID mismatch through the message; A fifteenth step of extracting the entire profile to which the public ID belongs if the received public ID and private ID match data in the subscriber profile table as a result of the check in the thirteenth step; And A sixteenth step of constructing and encoding each of the extracted profiles in the form of the information element (AVP) and transmitting them to the CSCF as the SAA message; Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. The method of claim 17, The twelfth step, As a result of confirming the status of the subscriber profile transmission request, if the profile change request (PPR: Push-Profile-Request) message request according to the change of the subscriber profile information is changed, it is changed in the subscriber profile table of the corresponding public ID A thirteenth step of selectively extracting the profile; A fourteenth step of constructing and encoding the extracted profile in the form of the information element (AVP); And Transmitting a changed profile of the subscriber through the PPR message to the CSCF related to the home subscriber server (HSS); Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. In the subscriber profile delivery method applied to IP multimedia (IM) home subscriber server (HSS), The home subscriber server (HSS) is the subscriber basic information, service profile information of the subscriber, public identifier (ID) information in the service, filter reference information for the service, trigger information for the filter criteria and the A first step of requesting transmission to a call / session control server (CSCF) for a subscriber profile in which application server information on filter criteria is hierarchically divided; A second step of the home subscriber server (HSS) checking the status of the subscriber profile transmission request; As a result of the checking in the second step, if the profile request (SAR) message according to subscriber registration is received from the CSCF, the home subscriber server (HSS) authenticates the identification information received through the SAR message and receives the public ( Public) The third step of extracting the content of the profile to which the ID belongs to form in the form of information elements (AVP) and transmits to the CSCF as a Profile Request Answer (SAA) message; And As a result of the checking in the second step, if the message for requesting the profile change notification according to the change of the subscriber profile information stored in the home subscriber server (HSS), the subscriber profile for the changed profile of the corresponding public ID A fourth step of selectively extracting from the stored database and constructing it in the form of the information element (AVP) and sending it to the related CSCF as a profile change request (PPR) message Subscriber profile delivery method in IP multimedia home subscriber server comprising a. The method of claim 23, The third step, If the result of checking the status of the subscriber profile transmission request is based on a profile request (SAR) message according to subscriber registration from the CSCF, the home subscriber server (HSS) receives the identification information received through the SAR message. A fifth step of confirming that a subscriber profile matches data stored in the database; A sixth step of notifying the subscriber profile transmission failure and the reason through a SAA message transmitted to the CSCF if it is not matched as a result of the checking in the fifth step; A seventh step of extracting the entire subscriber profile to which the public ID identified through the SAR message corresponds, as a result of the checking of the fifth step; And An eighth step of constructing and encoding each of the extracted profiles in the form of the information element (AVP) and transmitting the SAA message to the CSCF as the SAA message; Subscriber profile delivery method in IP multimedia home subscriber server comprising a. The method of claim 23 or 24, The fourth step, As a result of confirming the status of the subscriber profile transmission request, if a request for transmission of a profile change request (PPR: PPR) message according to the change of the subscriber profile located in the database is changed, the subscriber profile stored in the database is changed. A ninth step of selectively extracting the profile; A tenth step of the home subscriber server (HSS) configuring and encoding the extracted profile in the form of the information element (AVP); And An eleventh step of transmitting, by the home subscriber server (HSS), the changed subscriber profile through the PPR message to the related CSCF; Subscriber profile building and delivery method in IP multimedia home subscriber server comprising a. A base table for identifying individual subscribers using IP multimedia (IM); A service table for indicating information on a service used by the subscriber individual based on the basic table; A public identifier table for indicating public identifier (ID) information for the service appearing in the service table; A filter criteria table for indicating information required for control in a call / session control server (CSCF) related to a service in the service table; A trigger table for representing trigger SPI information based on the filter reference table; And Application server table for indicating information and processing of the application server (AS) to be triggered in response to the filter criteria table The computer-readable recording medium having the data recorded thereon. User data information element which comprises related public identification list information and filter criterion information in Grouped type, together with information about subscriber and information about service used by subscriber to indicate IP Multimedia subscriber profile (AVP); The public at a call / session control server utilizing the subscriber profile and the public identifier (ID) information subscribed to the service to indicate public identification list information appearing in the user data information element (AVP). A public identification list information element (AVP) for configuring Barring-Indication information indicating whether a session is established for an identifier (ID) as a grouped type; Priority, condition type CNF, trigger SPI and corresponding application corresponding to the filter criteria of the service used by the subscriber to indicate the filter criteria information appearing in the user data information element (AVP). A filter criterion information element (AVP) constituting application server information such as an identifier, a name, an address of a server, basic handling, and service information in a grouped type; And Condition Negated information, Group ID information, Contents Mask information, SIP: Session to indicate trigger SPI information appearing in the filter criteria information element (AVP). Initiation Protocol method information, SIP header information, SIP header content information, session case information, session description line information, and session description content ) Trigger Information Element (AVP) which organizes information into Grouped type. The computer-readable recording medium having the data recorded thereon. In a home subscriber server with a processor, Subscriber personal information, service information used by the subscriber, public identifier information in the service, information required for control in a call / session control server (CSCF) for the service, and trigger esp based on the control information A first function of linking SPI information and a subscriber profile table hierarchically dividing information about an application server (AS) to be triggered with respect to the control information; And A second function of receiving a subscriber profile transmission request, extracting corresponding data from the subscriber profile table, configuring the information in the form of an Attribute Value Pair (AVP), encoding the encoded data, and transmitting the encoded data to the call / session control server (CSCF); A computer-readable recording medium having recorded thereon a program for realizing this. In a home subscriber server with a processor, Subscriber basic information, service profile information of the subscriber, public identifier (ID) information in the service, filter reference information for the service, trigger information for the filter criteria, and application server information for the filter criteria A first function for requesting transmission to a call / session control server (CSCF) for a hierarchically divided subscriber profile; A second function of checking the status of the subscriber profile transmission request; As a result of the check of the second function, if the profile request (SAR) message according to subscriber registration is received from the CSCF, the contents of the profile to which the received public ID belongs by authenticating the identification information received through the SAR message. A third function of extracting and constructing the information in the form of an information element (AVP) and transmitting it to the CSCF as a profile request answer (SAA) message; And If the result of the check of the second function is a message for requesting a profile change notification according to the information change of the subscriber profile, the subscriber profile is selectively extracted from the database in which the subscriber profile is stored for the changed profile of the corresponding public ID. A fourth function configured in the form of an element (AVP) and transmitted as the profile change request (PPR) message to the associated CSCF A computer-readable recording medium having recorded thereon a program for realizing this.