KR0139720B1 - How to link the next generation intelligent network SCF / SDF with X.500 directory system - Google Patents

Abstract

The present invention provides a system configuration that can be applied to the X.500 directory system for the purpose of managing service data and network resources among the information of the next generation intelligent network, and a directory user for applying the X.500 directory system to the service control function in the next generation intelligent network. The present invention relates to a method of adding a function of a directory user agent (DUA) and replacing the directory system agent (DSA) with a service data function.

By providing a distributed database environment, the directory system can satisfy the service data functions of the next-generation intelligent network, and the operations are similar to the X.500 directory system so that the mapping relationship between these operations can be applied and the service control can be enhanced. The OSI (Open System Interconnection) method is adopted as the platform of the function and the service data function so that the communication between the service data functions can be solved by the X.500 Directory System Protocol.

The main function of service data management of intelligent network is that the main function of subscriber data management is to make subscriber data management, network data management, and security easy, and to easily interwork with service data functions of other networks. Provides access to service data functions by changing or adding the operations of the Intelligent Network Application Part (INAP), which can integrate .500 directory systems into next-generation intelligent networks. By using X.500 directories to accommodate data functions, they support an environment that is compatible with existing directory systems.

The present invention includes a method for controlling and managing service data and network data in a next generation intelligent network.

Description

How to link the next generation intelligent network SCF / SDF with X.500 directory system

1 is a block diagram of a next-generation intelligent network service data function platform to which the present invention is applied.

2A and 2B are X.500 directory system and next generation intelligent network SCF / SDF information flow chart according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Service Control Function (SCF) 2: Service Data Function (SDF)

3: AIN SDF Server (Advanced Intelligent Network Service Data Function Server) 4: Directory Information Base (DIB)

5: Directory User Agent (DUA) 6: Directory System Agent (DSA)

The present invention applies subscriber information and network resource information by applying X.500 directory model established as standard in ITU-T (formerly OCITT) and OSI (Open System Interconnection) to existing next generation intelligent network SCF / SDF interface for next generation intelligent network service. The present invention relates to a directory system interworking method for efficiently processing a.

Data processing requirements such as efficient management of bulk data such as subscriber service data and network management data, real-time data processing, strong data protection, data recovery, concurrency control, and data integrity checks in next-generation intelligent networks are applied to next-generation intelligent service data functions. Can be met in conjunction with a suitable X.500 directory system.

It does not accept all the functions of the X.500 directory, and can select and support only the functions needed in the next-generation intelligent network.In order to effectively provide services to the next-generation intelligent network (AIN) subscribers and manage network resources efficiently, As long as real-time service is available, information about subscriber and network resource should be kept as consistent as possible.

Considering this point, we proposed a method that can apply service data functions of next generation intelligent network to X.500 directory system.

The conventional technology interfaces an independent database capable of real-time service to the service control function and supports the data required by the service control function, and in terms of network interworking, the service control function of other next-generation intelligent networks is provided by the service control function. All information flows and information elements are transmitted through it.In consideration of the expansion of next generation intelligent network (AIN), interworking between service control function (SCF) of local network and service data function (SDF) of other network, service data Interworking between functions (SDF) and interworking between service control functions (SCF) are considered as requirements.

In order to perform such an operation, the method adopted in the conventional method is too complicated and has many problems such as redesign.

In addition, since traffic between service control functions is increased and security problems and data integrity generated when interworking between function entities are to be considered, the present configuration can be a very complex system.

As one of the methods for solving the problems of the prior art, it is desirable to introduce an environment that is easy to map with operations that are accommodated and operated in the next generation intelligent network and that enables distributed operation (network interworking).

From this point of view, it is advisable to apply the X.500 directory, a system with similar operations and distributed behaviors that can be robust and even address security concerns. However, in case of applying this, it is difficult for the system environment to interwork between the next generation intelligent network, which is a common line signal network method, and the X.500 directory system employing OSI method.

In order to solve the above problems, an object of the present invention is to provide a directory system interworking method for efficiently processing subscriber information and network resource information.

In order to achieve the above object, the present invention provides a service control function in a state of interworking between a service control function (SCF) and a service data function (SDF) of a next generation intelligent network (AIN). Modifies the operations of the Intelligent Network Application Part (INAP) and allows them to be delivered in a form similar to the X.500 directory operations when the Service Control Function (SCF) accesses the Service Data Function (SDF). It was configured to use the service data function by the changed intelligent network application unit (INAP) operation. In addition, AIN SDF (Advanced Intelligent Network Service Data Function) server is configured to facilitate the distributed operation by configuring the environment of the X.500 Directory System Agent (DSA) as it is. In order to accommodate such a directory system environment, when an operation of a service control function (SCF) such as a directory user agent (DUA) of a directory system is performed, an application program interface (API) function module is performed. It receives it from the application layer and converts it to the X.500 Directory Access Protocol (DAP) at the top layer of the network layer so that it can be performed by the directory system handler (DSA). In addition, in order for the result and error of the operation to be transmitted to the service control function (SCF), the pointer of the service control function (SCF) has a pointer of the same type as the directory user handler (DUA), The execution result and the error are transmitted to the service control function (SCF) through the application program interface (API) function module.

The advantage of this case is that the corresponding information is not transmitted through the lower layer of the network but is processed by the upper layer, so that the processing speed can be improved.

In the above process, when the operation is performed by the directory user processor (DUA) or the service control function (SCF), the operation is transferred to the next generation intelligent network service data function by receiving the operation and converting it to the form of X..511 (directory abstract service). Pass to the server (AIN SDF Server), perform directory service by operation to collect results and errors, and operation according to the collected results (another next-generation intelligent network service data function server (AIN SDF Server) access, results and errors To the directory user access (DUA) or service control function (SCF).

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a configuration diagram of a next-generation intelligent network service data function platform to which the present invention is applied. Referring to FIG. 1, the next-generation intelligent network service data function platform is an application that performs a matching function with a next-generation intelligent network service data function (AIN SDF) server. An application program interface (API) 2, an operation controller 3 for controlling the operation of each function module, and an operation transmitted from a service control function (SCF) 1 are used for the application program. The X.500 operation received through the interface (API) 2 and the operation received through the directory user agent (DUA) 15 are classified so that the corresponding function module can perform the operation controller 3. And an arbitration station to check whether or not the operations delivered through the operation controller 3 are distributed. A schema manager 5 which searches for knowledge information of its own memory with an entry transferred from the schema manager 5 and delivers the result back to the schema manager 5; and A name resolver 6 that resolves names based on the results processed by the schema manager 5, and a DIB access manager 10 that manages access to a Data Information Base (DIB) 12. And a result processor 7 for analyzing the result and error of the information obtained from the database through the DIB access manager 10 and processing the operation based on the result; Security manager 8 for managing matters related to security, that is, the number of attempts of access authority, to manage the state change of intelligent network service data function server, and the security manager 8, distributed management (9) it is connected to the DIB access manager (10) directory system processor to manage them: consists of (DSA Directory System Agent) manager (11).

The application program interface (APC) 2 is a function library that can be called for efficient management of a next-generation intelligent network service data function server (AIN SDF Server), and includes a service control function (SCF), a directory user handler (DUA), and an application. Used for program development.

That is, when the information required by the next-generation intelligent network subscriber is present in the next-generation intelligent network, the information for the subscriber service is immediately retrieved through the direct system processor, and the next processing function performed in the next-generation intelligent network itself is continuously performed. If the subscriber wants to move to another area and receive the next generation intelligent network service, the next generation intelligent network requested for the service does not have the subscriber's information. Therefore, the subscriber must additionally register or search the information of the first registered service area to provide the next generation intelligent network service. .

Accordingly, the directory of the next-generation intelligent network service data function platform to which the present invention is applied is configured based on a client / server model like a service control function (SCF) / service data function (SDF) interface, and users (clients) are one directory. The user processor (DUA) or service control function (SCF) will access the next generation intelligent network service data function (AIN SDF) server. The directory user processor (DUA) or service control function (SCF) is configured to provide a directory operation for service processing from a user side, and the next generation intelligent network service data function (AIN SDF) server is a service control function (SCF). Although it may seem like a single logical entity, it is a huge database of many physical next-generation intelligent network service data function (AIN SDF) servers.

The service control function (SCF) operation as an information change and query of the next generation intelligent network service data function (AIN SDF) server requires a next generation intelligent network service data function (AIN SDF) server in the service control function (SCF). If the next-generation intelligent network service data function (AIN SDF) server cannot satisfy this operation, it takes the referral information returned to the service control function (SCF) and sends it to another next-generation intelligent network service data function (AIN SDF) server to perform the operation. Alternatively, the next-generation intelligent network service data function (AIN SDF) server uses a chaining method of forwarding a query to another next-generation intelligent network service data function (AIN SDF) server.

That is, in order to efficiently service the distributed next generation intelligent network, an operation for accessing a distributed directory in another region is transferred using a command called CHANIED in order to acquire subscriber information. In the ChainedX, 'X' Is structured to use operation name searched in local network. These operations are used after being connected to the next-generation next-generation intelligent network service data function (AIN SDF) server.

Upon receiving the subscriber's service request to use these operations, the requested next-generation intelligent network retrieves this information, and if not, to query the distributed directory systems for the information. A method for accessing this distributed directory. This method uses the referral method, which uses the directory system protocol to request subscriber information from all distributed AIN SDF servers to verify presence / absence, If the service information exists, the necessary information can be obtained using the Chained X operation.

It includes the function to convert the operation delivered from the service control function (SCF) into a form that can be processed by the next generation AIN SDF server, the result is the motion controller (3) through the motion processor (4) The operation controller 3 receives an operation request from a service control function (SCF), a directory user handler (DUA), and another next-generation intelligent network service data function (AIN SDF) server to resolve the name of the entry. Call the function.

According to the result, the operation processor 4 is called to perform an actual operation, or the operation is represented by another next generation intelligent network service data function (AIN SDF) server.

The result obtained after performing the operation or the result received from another next generation intelligent network service data function (AIN SDF) server is returned to the requested service control function (SCF) or directory user handler (DUA), and the name resolver (6) is the schema manager (5). Compares the name of the entry with the context prefix of the next-generation intelligent network service data function (AIN SDF) server in the knowledge information table obtained through the distributed manager (9) and whether the entry is on the local next-generation intelligent network service data function (AIN SDF) server. Determine if it is on another next generation intelligent network service data function (AIN SDR) server.

If the entry is accessible by the local next-generation intelligent network service data function (AIN SDF) server, it returns the DIB information (object class key) for that entry, and the entry in another next-generation intelligent network service data function (AIN SDF) server. Returns the system name of the next-generation intelligent network service data function (AIN SDF) server.

The action processor 4 uses the object class table and keys obtained from the schema manager 5 and the name resolver 6 to obtain information from the object class table according to the requested action.

Actions to be processed include (chained compare), search (chained), change entry (chained) modifyEntry, add entry (chained) AddEntry, and remove entry (chained) removeEntry.

When performing a change operation during the above operation, the operation is processed after the lock of the table to prevent the user from accessing the table operated in the change operation.

The schema manager 5 stores and manages information on the directory schema that defines the structure of the directory information base (DIB).

Store directory schema information in a separate schema repository, to change related schema information when creating, adding, changing classes, and changing the directory information tree (DIT) structure. do.

In this case, the DIT structure refers to a structure for storing information in a directory and can access information stored in the DIT by a directory schema.

When the schema information is changed, the change information defined in ASN.1 is transmitted to the directory information base (DIB) access manager 12.

When an error occurs during a function processing error in each function module, the result processor 7 sets an error according to the type of the error, or returns the result obtained after the operation process to the place where the request (SCF, DUA) was requested.

If the name resolver (6) or the action processor (4) needs to obtain information about an entry in another AIN SDF server, then act as its AIN SDF server (ChainedX). The results obtained by requesting the request are combined with the results obtained from the current AIN SDF server.

The directory system processor (DSA) manager 11 is a processor that operates independently and uses a knowledge information file required by a next-generation intelligent network service data function (AIN SDF) server when newly configuring a directory system in an arbitrary system. Configure

The required knowledge information includes context prefix, high reference, low reference, unspecified low reference, and next generation intelligent network service data function (AIN SDF) server name.

This function is a set of programs that perform additional functions to efficiently manage the next generation AIN SDF server.

It is composed of system booting, monitoring program and backup, and export / import program of next generation intelligent network service data function (AIN SDF) server.

The security manager 8 is in charge of access control by adopting a strong authentication method using a public key encryption technique to protect the directory information base (DIB) information from illegal access.

It has a key management function that manages a directory user's private key, distributes keys to users, and protects data by using a mandatory access control (MAC) method that performs access control according to the security level of each user.

The directory information base (DIB) access manager 10 is a database base management system (DBMS) capable of efficiently managing a large amount of next-generation information network (AIN) data, and in the directory information base (DIB) 12. It is responsible for physically storing and processing directory data, and performs real-time data processing, data recovery, concurrency control, and integrity check functions.

The distributed manager 9 serves to process data by exchanging information with various other next generation intelligent network service data function (AIN SDF) servers in which the next generation intelligent network service data function (AIN SDF) server is distributed.

It performs knowledge management and data replication function to store and manage knowledge of distributed next generation intelligent network service data function (AIN SDF) server.

2 is a flowchart illustrating a method for interworking an X.500 directory system between next-generation intelligent network SCF / SDF according to the present invention. First, if any operation approaches the interworking system, the device to be accessed is identified (s201). If the data is delivered from the service control function (SCF), the operation is coded by the intelligent network application unit operation ASN.1 (s202) and mapped with the operation of X.500 (s203), and the mapping result is confirmed (s204). Thus, if it is the same as the next generation intelligent network operation, the input operation is transferred to the operation controller 3 of the next generation intelligent network service data function (AIN SDF) server (s208), otherwise, the service control function (SCF) is informed that it is an invalid operation ( s205).

In addition, when attempting to access through the directory user handler (DUA), the operation is made by an operation configurator of the directory user handler (DUA) to make an X.500 operation (s206). The directory user handler (DUA) / directory system handler (DSA) interface. And transfer the operation to the operation controller through the ISODE interface which is the OSI standard (s207) (s208).

At this time, the directory user processor (DUA) is configured by the OSI standard protocol.

Then, the operation controller checks where the operation and the required information are located through the schema manager (s209), and if present in the current server, obtains a method of accessing the directory by name resolution (s211).

The directory information base (DIB) access manager accesses the database through the obtained access method and operation (s212), and obtains information from the database.

If an error does not occur by checking the result of the information obtained through the directory information base (DIB) (s213), the result is returned to the operation controller (s214), and if an error occurs, the generated error is transmitted to the operation controller. (s215).

Then, the operation controller transmits the acquired information and error to the device (service control function (SCF) or directory user processor (DUA) that requested the operation (S216).

If an error occurs as a result of the information location checking (S210), the knowledge pointer S15 is searched by the distributed manager to check whether information about the operation and the required information location exists (s218). It transmits to the operation controller so as to be connected to another connection pointer by referral or chained operation (s219) and connects to another next generation intelligent network service data function (AIN SDF) server to detect the corresponding information (s220).

When the received operation controller accesses the service control function (SCF), the operation controller transmits a result and an error to the service control function (SCF) through the application program interface (API), and then ends. On the other hand, when delivered to the directory user handler (DUA), it is terminated after being delivered to the result / error handler through the directory user handler (DUA) / directory system handler (DSA) interface of the directory user handler (DUA) through the ISODE interface. The intelligent network service data function (AIN SDF) server goes to standby.

Therefore, the present invention as described above uses the method of applying the X.500 directory system to the service control function (SCF) / service data function (SDF) in the next-generation intelligent network to more efficiently process the subscriber service data and network management data. Can be processed as

Claims (1)

Application program interface (API) that performs matching function with next generation intelligent network service data (AIN SDF) server (2), Operational Controller (3) that controls operation of each function module, Service control function Operations sent from (SCF: Service Control Function) (1) receive the X.500 operations received through the API and operations received through the Directory User Agent (DUA) (1-3). An action processor (4) that classifies and delivers it to the action controller (3), and a schema manager (5) that acts as an arbitrator to check whether the operations delivered through the action controller (3) are distributed. Distributed management that retrieves knowledge information in its own memory with the entries delivered from the schema manager 5 and delivers the results back to the schema manager 5 (9), the result processor which analyzes the result and error through the DIB manager with the information obtained from the database and processes the operation based on the result. AIN SDF) A step of managing a change in the state of the server, including the security manager (8) for managing the matters related to security, that is, the number of attempts of access rights, in the interworking method of the system, Accessing the directory information base (DIB) 12, including the result of the name resolver 6, which resolves the name, and the knowledge information, to the directory information base (DIB) access manager 10; Steps; The results and errors provided by the result processor 7 may be transmitted to the service control function (SCF) or the directory user processor (DUA) accessing the next generation intelligent network service data function (AIN SDF) server through the operation controller. Passing a result processor, a schema manager, a name, and the like to another next-generation intelligent network service data function (AIN SDF) server when accessing to a next-generation intelligent network service data function (AIN SDF) server; Manages the results performed by the security manager, distributed manager, directory information base (DIB) access manager, etc. or manages the status (addition, deletion, change) of information of next generation intelligent network service data function (AIN SDF) server collectively Interworking method of next-generation intelligent network SCF / SDF and X.500 directory system, characterized in that it comprises the step of performing in the directory system processor (DSA) manager (11).