KR100216514B1 - A dynamic creation and a life-cycle control method for objects of video conference service in open networking - Google Patents

Abstract

The present invention introduces a session concept of a video conference service applicable to various types of multimedia services in an open communication network based on a connection between a client and a server and generates a service between a plurality of service users and a video conference service provider system, And to methods and procedures for managing the life-cycle of objects and the shaping of objects. The client and server systems use a broadband communication network (B-ISDN) as a transport network and establish a distributed processing environment in each system, so that the client and server systems can communicate with each other regardless of the number of users requesting video conferencing services or the number of conference groups, Regardless of their location. In the present invention, a method for separating a connection management of a service user from a service control performed on the basis of the connection shape when creating a service session, which is a service call connection method between service users who want to use a video conference service, We have devised two methods to separate the service configuration and control part that are common to all users and the service configuration and control part. Accordingly, the present invention provides a service management method and a service management method that can be easily applied to various types of multimedia services, such as portability and maintenance, reusable service session object configuration and generation method, session management of conference group, Objects can be shaped according to their roles, and the lifecycle of objects can be efficiently managed until the end of service.

Description

Dynamic Creation and Life Cycle Management of Video Conferencing Service Objects in Open Network

The present invention introduces object-oriented analysis, design and implementation technology and distributed processing environment (DPE) technology into the communication network called B-ISDN to establish a multimedia service structure and introduce it into the development of video conference application service In particular, in an open communication network based on a connection between a client and a server in a distributed environment, a configuration and a generation method of a service session object that can be commonly applied to various kinds of multimedia services, a session management of a conference group, And to a method for dynamic generation and life cycle management of a video conference service object in an open communication network for managing the life cycle of an object until the end of service.

There are many examples of accepting object-oriented concepts in the development of conventional application services, both domestic and foreign, and there are many examples of application technologies incorporating distributed environment techniques. However, there is no case in which each of these technologies is developed as a convergence of the networks of a network such as B-ISDN. In the cases where these technologies are applied, the required functions or objects are defined as structures of different shapes according to services In addition, since the function information or the functions defined in the service (for example, conference talk control, voting function, etc.) are defined in a single function or an object, the reuse of the object and the extension The maintenance cost is increased.

The relationship between the conventional service and the communication network is as follows. In order to provide one service to the service user, a new communication network which is dependent on the characteristics of the service and the user environment is constructed. Examples include telephone networks for telephone users, FAX dedicated networks for FAX users, and data transmission networks for data communications such as PCs. Therefore, telecommunication service providers have made efforts to reduce the cost of the communication network to be constructed according to the service and the maintenance cost of the communication network, and the communication network which is created in accordance with this trend is the Integrated Information Network (ISDN). This ISDN provides a solution that allows heterogeneous media to be delivered and serviced through a single network. However, in recent years, the requirements of the users using the communication network have required high speed of communication and multimedia of information, and the spread of personal computers (PC) has spread widely and it has become impossible to reflect this trend in ISDN, A broadband communication network (Broadband-ISDN) has emerged as a solution. When the network is constructed as a large national backbone network, it can utilize both the high-speed transmission of information and various media, thus meeting users' demand trends.

However, the service needs to be considered not only from the position of the service user but also from the viewpoint of the service provider or the service provider. The service environment of the user, the service coverage provided by the service user, the type of the service providing system provided by the communication network, Complex relationships between providers and between various service providers can be considered.

That is, even if the same communication network is established, the configuration of the service may vary according to the service provider providing the specific service, and the control procedures may be heterogeneous. In addition, mutual agreements must be made between the MNs. To solve these problems is an open communication network.

An open communication network is a new conceptual software structure that can share or access communication network management objects and service management objects on an object basis in a distributed processing environment. It is a unified logic structure for designing and building network resources And suggesting the principle that efficient network management as well as reuse of software provides quick service and flexible service call connection procedure.

This open network is being studied extensively in the Telecommunication Information Networking Architecture - Consortium (TINA-C), which is formed by Bellcore of the United States, BT of the United Kingdom and NTT of Japan.

In TINA-C, in particular, the concept of session is established in relation to multimedia service. This session is composed of a signaling method (access session) for setting up a service call between a service user and a service provider, a service call connection method Session), and a connection method between the actual network resource and the user media environment (communication session), and the result of this research activity is being promoted to become international standardization.

In the present invention, in order to create a service session object that can be commonly applied to a multimedia service and manage the life cycle of the object and the shape of the object according to the service characteristic and the role of the service user, We have devised a method for separating service control performed in a configuration and two technical solutions for separating the service configuration and control part specific to the service user and the service configuration and control part commonly or collectively applied to all users.

FIG. 1 is a block diagram of a video conference system to which the present invention is applied; FIG.

FIG. 2 is a block diagram of a main object of the video conferencing service system of FIG.

Figure 3 is a dynamic generation main flow diagram of a service session object.

FIG. 4 is a flow chart illustrating an object according to a service user role.

FIG. 5 is a lifecycle management flow diagram of a service session object. FIG.

According to an aspect of the present invention, there is provided a video conference service system comprising: a service access control management object, a service creation object, a service application control overall management object, a service session management object, A second step of dynamically creating service objects including a service session management object of a user, a second step of shaping the created service objects with a user role and a user terminal environment, And a third process of managing the lifecycle of each service object until the video conference service is terminated at the same time as the generated service objects are managed, thereby facilitating object portability to other systems, And it is easy to change the shape of the user terminal It is possible to apply the shape of the object and to manage the lifecycle of the object including the reusable object efficiently.

The present invention relates to a method for separating a connection management of a service user and a service control performed based on the connection shape when creating a service session, which is a service call connection method between service users who want to use a video conference service, And two methods of separating the service configuration and control portion that are common to all users and the service configuration and control portion that are applied collectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In an open communication network in which service providing systems and service user systems are interconnected based on a B-ISDN communication network and a distributed processing environment as in the first aspect, the present invention provides a video conferencing service There is a service creation request or a conference participation request from service users on the system and thus a process for dynamically creating objects for service execution and a procedure for creating an object by dividing the service application function and the connection configuration management function in the creation process 3. In FIG. 4, the generated objects are shaped according to the shape of the user terminal and the role of the user in the meeting, and the procedures for interconnecting the objects are illustrated. In FIG. 5, The cycle management process is illustrated.

FIG. 1 is a connection diagram of a broadband communication network (B-ISDN) to which the present invention is applied, a service user system and a service providing system, and shows an example of an open communication network.

The service user systems 104, 105, 107, 108, 109 and 110, the video conference service system 101, the service access control management system 102 and the network configuration and resource management system 103 are connected to the B- (Asynchronous Transfer Mode) communication protocol for connection with the Internet, and a distributed processing environment is installed thereon. The video conference service system 101 comprises objects for providing a service session, which is a service call connection method, between service users 104, 105, 107, 108, 109 and 110 who want to use a video conference service. Communication between each object of the system 101 and communication with other systems 102, 103, 104, 105, 107, 108, 109 and 110 is connected to the B-ISDN communication network through a distributed processing environment, . The service access management control system 102 is composed of objects for an access session which is a signaling method for setting up a service call between a service user 104, 105, 107, 108, 109, 110 and a video conference service system 102 . The network configuration and resource management system 103 is composed of objects for a communication session, which is a connection method between a real network resource and a user media environment. The network configuration and resource management system 103 includes service user systems 104, 105, 107, 108, 109, and 110, and receives user environment information, allocates a physical communication link, and performs connection between service user systems. The service user system 104, 105, 107, 108, 109, 110 is a user of the video conference service, and is equipped with a user program for using the service, an ATM communication protocol, and a codec card for processing multimedia.

FIG. 2 is a block diagram of a detailed object constituting the video conference service system of FIG. 1, which includes a service creation object 208, user service application control and management objects 202, 204, 206, 213, 215 and 217, Service session control management objects 209 and 211 and service session management objects 210 and 212. The service session management objects 209 and 211 and the service session management objects 210 and 212 include service session management objects 203 and 205,

FIG. 2 is a block diagram of the object illustrated in the video conference service system 201.

This is because 6 users request to use video conferencing and divide into two conference groups, where user 1 and user 4 are the chairpersons of each conference group, and user 1, user 2, and user 3 participate in conference group 1 And user 4, user 5, and user 6 participate in conference group 2.

This prerequisite can be extended to a number of cases, such as the number of conference groups, the number of users, and chairman of another meeting group.

When the video conference service system 201 is operated for the first time, the service creation object 208 is operated as a server, and the remaining objects are not created in the service creation object 208 unless there is a request for creating a service of the user. The method of creating an object in the service creation object 208 is a dynamic object creation method in which a plurality of objects can be created by allocating a unique identifier to one object having the same function and being implemented. The service application control general management objects 209 and 211 and the service session general management objects 210 and 212 are generated one by one in the service creation object 208 when a conference group (session) .

The service creator object 208 is operated as a server when the video conferencing service system is initially operated and waits for a service creation request of the service user and creates the remaining objects of the video conferencing service system according to the requested content and the role of the user.

In the conference group 1, if the user 1 (chairman) requests the service, the user 1 service session management object 2020 that controls and manages the session of the user 1 and the function (For example, point-to-point connection, point-to-multipoint connection) according to the meeting name defined by the chairman user, as well as the user 1 service application control management object 202 And generates a service application control overall management object 209 for controlling the session object and the management object 210 which are controlled and managed and the application functions of the general service (for example, voice granting and voting control). If the user is a non-chairperson, the user service session management object 205 or 207 for managing the session of the user and the user service application control management object 204 or 206 for the service application control are created.

FIG. 3 illustrates a dynamic generation process of the objects constituting the video conference service system in FIG. 2. As illustrated in FIG. 2, a video conference service in which three service users participate in one conference group The creation of a service session object is fixed using a data flow diagram.

The user 1 who is the chairman connects with the service access control management object of the service access control management system (102 in FIG. 1) through the distributed processing environment to request participation of the video conference (301). At this time, The name of the conference group, the service registration information of the user, and the user terminal environment (e.g., PC, H.261 codec, input port name, output port name). After determining that the video conference service request of the chairman user 1 is legitimate, the service access control management object requests the service creation object by connecting with the service generation object of the video conference service system (101 in FIG. 1) through the distributed processing environment (302), and transmits the information transmitted from the service user.

The service creation object receives the request and determines whether the role of the user is a chairperson or a general participant. Then, since the user is chairperson, the service creation object receives a service session A generic management object and a service application control general management object that controls the application of the overall service are generated and the result is notified to the service creation object (303, 304). In addition, a user 1 service session control management object that controls and manages a session of the user 1 and a user 1 service application control management object that performs a control function (for example, a floor control and a voting control) To the service creation object (305, 306). The service creation object connects the result of the service session creation of the chairman user through the distributed processing environment and delivers the connection result to the service user 1 through the service access control management object (307). Then, a process of forming the generated objects (FIG. 4) and a life cycle management process (FIG. 5) is started (308).

(309 or 315) and transmits the same information as the chairman user by connecting the service access control management object of the service user 2 (or the service user 3) through the distributed processing environment to the video conference, The role of the general participant.

The service access control management object receives the service creation request to determine the validity of the service registration information and requests the creation of the user service session by connecting the service creation object of the video conference service system 101 and the distributed processing environment 309 or 315 ), And transmits the information transmitted from the service user. Since the general user requests generation of a user service session (310 or 316), the service creation object creates a user service session management object for session management of the user and a user service application control management object for service application control, To the service creation object (311 and 312 or 317 and 318). The service creation object delivers the user service session creation result of the user 2 (or the user 3) to the service user 2 (or the user 3) through the service access control management object (313 or 319). Then, the process of shaping the generated objects (FIG. 4) and the life cycle management process (FIG. 5) is executed (314 or 320). The sequence of the service session creation request procedure through the service participation request of the two service users is irrelevant to any user first.

FIG. 4 shows a process of shaping the objects created in FIG. 3, assuming that the user 2 first applied for the video conference prior to the user 3.

The service creator object is connected to the user 1 service application control management object through the distributed processing environment to transmit the service subscription information of the user 1 as the chairman and the application control authority specifically assigned to the service to perform the shaping procedure (401). At the same time, the service creator object transmits the distributed processing environment information and the session control authority to the user 1 service session management object to perform the shaping procedure (402).

Then, the user 1 service application control object is connected to the service application control object and the management object through the distributed processing environment, and the application service scope and the authority of the user 1 are transmitted (403). At the time of the video conference, And to have authority such as voting and accepting / rejecting voices. At the same time, by connecting with the user 1 service session management object through the distributed processing environment, the terminal shape information of the user 1 and the session control right of the chairman are transmitted (404), and a service (Eg, point-to-point connection, point-to-multipoint connection) between user terminals.

Then, the user 1 service application control management object and the user 1 service session management object are connected through the distributed processing environment and are connected to the application object of the service user 1 (405, 406).

The service creator object connects with the user 2 service application control management object through the distributed processing environment, and carries out the shaping procedure by transmitting the service subscription information of the user 2 and the application control scope specifically assigned to the service. At the same time, the service creator object is connected to the user 2 service session management object through the distributed processing environment, and the service subscription information and the user 1 읠 terminal environment information of the user 2 are transmitted to perform the shaping procedure (408).

Thereafter, the user 2 service application control management object connects with the service application control general management object through the distributed processing environment, and transmits the application service range of the user 2 (409).

At the same time, the user 2 service session management object is connected to the service session overall management object through the distributed processing environment, and transmits the terminal shape information of the user 2 (410).

Then, the user 2 service session management object of the user 2 service application control management object is connected through the distributed processing environment and connected to the application object of the service user 2 (411, 412).

The service creator object is connected to the user 3 service application control and control object through the distributed processing environment to transmit the service subscription information of the user 3 and the application control scope specifically assigned to the service to perform the shaping procedure (413). At the same time, the service creator object is connected to the user 3 service session management object through the distributed processing environment, and the service subscription information of the user 3 and the terminal environment information of the user 3 are transmitted to perform the shaping procedure (414).

Thereafter, the user 3 service application control management object connects with the service application control general management object through the distributed processing environment, and transmits the application service range of the user 3 (415).

At the same time, the user 3 service session management object connects with the service session general management object through the distributed processing environment and transmits the terminal shape information of the user 3 (416).

Then, the user 3 service application control management object and the user 3 service session management object are connected through the distributed processing environment and connected to the application object of the service user 3 (417, 418).

When the above steps (401 to 418) are completed, the video conference between the user 1, the user 2, and the user 3 proceeds.

5 shows the life cycle management process of the objects created in FIG. 3. FIG. 5 shows the life cycle management process of the objects created in FIG. 3, and the user 3 performs a video conference and withdraws from the conference. Then, .

In FIG. 3, after the service creation object creates all service related objects of user 1, user 2, and user 3 participating in the video conference, the service creation object includes service application control general management object, service session general management object, (501, 502, 503, 504, 505, 506, 507, 508) by monitoring the state of the user application control management object and the user service session management object, and manages the life cycle of the object. In case of extinction, the objects are regenerated according to the corresponding procedures of Fig. 3 and Fig. 4 and the shaping is performed.

When the user 3 service session management object receives the conference withdrawal request of the service user 3 during the lifecycle management of the object (509), the service 3 manages the service session with the service session management object (501) 3 and the allocated resources, and requests the service creation object to remove the service session objects of user 3 (511). Thereafter, the service creation object removes the user 3 service application control management object and the user 3 service session management object (512, 513), and deletes the corresponding object of the user 3 in the life cycle management procedure.

Then, when the service user 1 and the service user 2 perform a conference, the user 1 requests the user 1 service session management object to terminate the conference (514), and the user 1 service session management object transmits the service session management object to the service session overall management object The chairman sends a meeting end request (515). Thereafter, the service session managing entity notifies the service user 2 of the end of the call (518) and at the same time requests the service session object to remove the service session (conference group name) (516). The service creation object receives the request and simultaneously removes the user service application control management object of the service user 1 and the user service session management object 517, 518, 520, and 521 from the service user 1 and the service user 2, Delete the corresponding object of user 2. Then, the service creation object removes the service application control general management object and the service session general management object (522, 523) and deletes the corresponding object in the life cycle management procedure. The service creation object then waits for the service creation request of the user as in FIG.

The method of dynamic creation, shaping, and lifecycle management of a video conference service object devised in the present invention as described above has advantages in that a service object is easily portable to other systems in a distributed environment, It is possible to reduce the maintenance cost such as the function expansion and efficiently manage the life cycle of the object including the generation of the object as well as the object shape that can be easily applied to the change of the shape of the user terminal.

The present invention relates to a method for separating a connection management of a service user from a service control performed on a connection form when creating a service session of a video conference service, Or separation of the service configuration and control part applied as a whole, the object portability to other systems is easy, the maintenance cost due to the expansion of the user function is reduced, and the object And to efficiently manage the lifecycle of objects including the creation of reusable objects.

Claims (5)

A service access control object, a service creation object, a service application control general management object, a service session general management object, a user service application control management object, and a user service session management object constituting a video conference service system in an open communication network A second step of dynamically creating service objects, a second step of shaping the created service objects with a role of a user and a user terminal environment, And managing a life cycle of each service object until a conferencing service is terminated. The method of claim 1, wherein the lifecycle management method comprises: The method as claimed in claim 1, wherein the first step comprises a first step of requesting a chairman user (1) to connect with a service access control management object through a distributed processing environment to request participation of a video conference, A second step of requesting the service creation object to connect with the service creation object through the distributed processing environment to determine whether the service creation object received the service creation request is a chair or a general participant, A service session management object and a service application control control management object are created according to a conference group name (session) defined by the design user, and a service session management object of user 1 and a service application control management object of user 1 are created A third step of notifying the service creation object of the result, and a third step of notifying the service creation object of the service creation object A fourth step of connecting a result of the service session creation of the first user through the distributed processing environment to the service user 1 through the service access control management object; A fifth step of accepting the service creation request to determine the validity of the service registration information, and then requesting the creation of the user service session by connecting the service creation object and the distributed creation environment through the distributed processing environment; A service session management object, and a user service application control management object, and then notifies the result of the response to the result of the sixth step, and the service creation object receiving the response notification sends a service access session creation result of a general participant to a service access control The seventh, which delivers to the general participant through the administered object The dynamic generation and lifecycle management method of the video conference service object in an open communication network, characterized in that made up step. The method as claimed in claim 1, wherein the second step is to connect the user 1 service application control management object, which is a chair of the service creation object, through the distributed processing environment to transfer service subscription information of the user 1 and application control authority A first step of transferring the service subscription information, the terminal environment and the session control right of the user 1 and shaping them, and a step of transmitting the service subscription information, the terminal environment, and the session control right to the user 1, A second step of transmitting an application service range and a privilege of the user 1 by connecting the service application control general management object through the distributed processing environment by the user service application control management object in order to form the application service scope and authority of the user 1, The user 1, who is the chairman in performing the video conference, controls the connection type between the service user terminals participating in the conference A third step of transmitting the terminal shape information of the user 1 and the session control right of the chairman by connecting with the service session general management object by the user 1 service session management object through the distributed processing environment, When the application control management object and the user 1 service session management object are connected with the application object of the service user 1 through the distributed processing environment, the service creation object receives the service subscription information and service of the user through the user 2 service application control management object and the distributed processing environment The second service session management object and the distributed processing environment by the service creation object in the fourth step, and transmits the service registration information of the user 2 and the service registration information of the user 2 A fifth step of transmitting and shaping the terminal environment information, Application control By the application control object, the application service scope of the user 2 is transmitted through the general management object and the distributed processing environment, and at the same time, the service session management object by the user 2 service session management object and the user 2 And a seventh step of connecting the user 2 service application control management object and the user 2 service session management object to the application object of the service user 2 through a distributed processing environment. Wherein the method comprises the steps of: a) generating a video conference service object; The method of claim 3, wherein the user service application control management object, the user service session management object, and the service user are used in a plurality of ways. The method of claim 1 or 4, wherein, in the third step, all the service-related objects of the users participating in the video conference are created by the service creation object in the second process, The overall management object, the user application control management object of each user, and the user service session management object to manage the lifecycle of the object, and when a specific object disappears due to occurrence of a specific situation, A second step of delivering the request to the service session managing entity when the request for withdrawing the service user is requested during the life cycle management of the object, , The service session management object uses the withdrawal service from the list of conference participants according to the delivered request And requesting the service creation object to remove the service session objects of the leaving user from the service creation object after the list of the service application management objects and the resources allocated to the service creation object are removed, A fourth step of deleting the corresponding object of the leaving user from the lifetime management procedure after the service session management object is removed; The service session management entity managing the service session management object, and transmitting the service session management entity to the service session management entity, A sixth step of requesting the removal of the service, A seventh step of simultaneously removing the user service application control management object and the user service session management object of the service user 1 and the service user 2 by the object and then deleting the corresponding object of the user 1 and the user 2 in the life cycle management procedure; The method comprising the steps of: deleting the object in the lifecycle management procedure after the application control general management object and the service session general management object are deleted; and then the service creation object is waiting for the service creation request of the user. Dynamic creation and life-cycle management of service objects.