KR100256676B1 - Atm - Google Patents

Abstract

PURPOSE: A semi-permanent virtual connection control method by a server is to provide various services by minimizing a change to a software in a terminal for a multimedia service communication between call originating subscriber and a destination subscriber. CONSTITUTION: In a standby state(300), when a service request is received from a semi-permanent virtual connection subscriber(301), an asynchronous transfer terminal requests a service from a server through a switching system(302), and the server analyzes a profile of a registration service by its management table(303) to determined whether the service is identical to registered information(304). If the service is identical to the registered information, the server transmits a service available and resource reservation state to the terminal(305). The switching system transmits and receives a service according to the registered information(306), when the switching system receives a service completion request from the subscriber or from the server(307), it performs a release procedure(308). If the service is not identical to the registered information, the server transmits service not-available and its reason to the terminal, and determines whether the subscriber is a service registered information change available subscriber(310). If the subscriber is a service registered information change available subscriber, the server determines whether a registered information negotiation is possible(311). If the registered information negotiation is available, the server receives a changed information from the subscriber(312), receives negotiated information, processes it and is transited to a standby state(315). If the subscriber is not the service registered information change available subscriber or the registered information negotiation is not possible, it ends the process(316).

Description

How to control semi-permanent virtual connection by server

The present invention relates to a semi-permanent virtual connection control method by a server for providing a service while reducing the load of an asynchronous transfer mode switch to a subscriber who desires a semi-permanent virtual connection service in an asynchronous transmission mode switching system.

Asynchronous transmission mode terminal and server installs asynchronous transmission mode (ATM) adapter card in personal computer and configures hardware as terminal for asynchronous transmission mode communication. Design and implement software block for asynchronous data transmission to service with exchange. When receiving the request signal, only the virtual path connection by signaling between the terminal and the server is performed, and the service subscriber profile is managed by the server to perform the service according to the subscriber's request, thereby reducing the communication signaling with the switch, thereby reducing the load on the exchange.

The addressing and routing of the connection establishment / release function between the asynchronous transmission mode switching system and the asynchronous transmission mode terminal is usually addressed by signaling in the case of a call control protocol, but in the case of a service by a semi-permanent virtual connection. Since the identifier for this is predetermined, there is a demand for the implementation of a method for realizing simple addressing using the same.

Accordingly, the present invention has been made in order to revive the request as described above, when a service request is received from the semi-permanent virtual connection request subscriber to the terminal, the terminal inquires whether the service is available to the server, the server can service the band of the subscribers , The service profile such as service cycle is analyzed and notified to the terminal whether the connection is possible according to the analysis result, and as a result of the analysis, if the requested service is available, the connection request is requested to the switching system, and if the connection is possible, the subscriber receives a connection approval message. Service is performed through the semi-permanent virtual connection path, and if the result of the case where the subscriber service is different from the registered subscriber profile is transmitted from the switching system, it is analyzed whether it is a negotiable subscriber and transmits a service change request. Reenter Subscriber's Data The accepted there is provided a semi-permanent virtual connection control method to provide the service.

1 is an exemplary configuration of asynchronous transmission mode terminal and server to which the present invention is applied.

2 is a flowchart illustrating a semi-permanent virtual connection control method by a server according to an embodiment of the present invention.

3 is a flowchart illustrating a semi-permanent virtual connection control method by a server according to another embodiment of the present invention.

4 is a detailed flowchart of a process of releasing after reserving / allocating the resources of FIG. 3 and supporting a service; FIG.

5 is a detailed flowchart of a service request and semi-permanent virtual connection subscriber service profile analysis of FIG. 3;

6 is a detailed flowchart of the subscriber data transmission / reception process of FIG.

7 is a detailed flowchart of a service release process of FIG. 3;

* Explanation of symbols for the main parts of the drawings

110: asynchronous transfer mode adapter card 111: application program interface

112: communication protocol 113: signal protocol

114: asynchronous transmission mode adaptation layer 115: asynchronous transmission mode layer

120: multimedia service control unit 130: call / connection control unit

140: shared memory / state control unit 150: multimedia interface unit

The method of the present invention for achieving the above object, the server receives a service request from the subscriber terminal, the first step of analyzing the service profile of the subscriber to confirm whether it matches the registered information; A second step of allocating and transmitting subscriber data by allocating resources and establishing a connection if the subscriber service profile matches the registration information as a result of the checking of the first step; And a third step of repeating from the first step after negotiating the registration information change with the subscriber if the subscriber service profile does not match the registration information as a result of the checking of the first step. .

Another method of the present invention provides a semi-permanent virtual connection control method by a server, the server comprising: a first step of analyzing a semi-permanent virtual connection subscriber service profile when a semi-permanent virtual connection service request is received from a subscriber; A second step of establishing a connection by reserving and allocating resources; Activating a service to transmit and receive subscriber data; And a fourth step of transitioning to the released state when the service is completed and terminating the transmission and reception of the subscriber data and then switching the subscriber equipment by releasing the resource, the virtual path and the virtual channel.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to FIGS. 1 to 7.

The addressing and routing of the connection establishment / release function between the asynchronous transmission mode switching system and the asynchronous transmission mode terminal is basically addressed according to E.164 by signaling in the call control protocol. In the case of service by connection, simple addressing is possible by pre-determining the identifier for allocation. In other words, addressing and network routing corresponding to the service request information can be realized. In addition, routing that provides a route that can be used between originating and terminating terminals is performed by management of an asynchronous transmission mode server without performing a call control procedure inside the switching system for routing using a fixed routing scheme. This is a way that the route between the originating and terminating terminal is fixed semi-permanently, and the change of the route is registered and controlled by the asynchronous transmission mode server by an operator request or by an external signal. In order to enable the negotiation of band / quality of service at the time of connection establishment, the band management of the variable band type is used and the semi-permanent virtual connection (VP) is used. It is possible to simplify the signaling procedure by enabling the pre-allocation at the point of time when the quality of service is determined according to the purpose of use.

Therefore, by performing a function such as addressing between the asynchronous transmission mode terminal and the server, it reduces signaling with the exchanger, thereby reducing the load of the exchanger and efficiently providing data management and services of registered subscribers.

Existing exchange technologies mainly provide services for processing voice and low-speed data, but in the modern society, communication networks in which high-speed communication services including high-speed data communication, still picture, and dynamic picture transmission service are provided according to the development of information communication. In order to satisfy the needs of the communication service, an asynchronous transmission mode switching technique for processing various traffic types is required.

The present invention allocates the appropriate bandwidth at the time of requesting various services of the user while satisfying the user's requirement for the semi-permanent virtual connection service through an asynchronous transmission mode switch, and asynchronously by management between the terminal and the server for service provision. The present invention provides a connection control method by establishing, releasing, and allocating a semi-permanent virtual connection between an asynchronous transmission mode terminal and a server for efficient service provision to a subscriber while reducing the load of a transmission mode switching system.

1 is an exemplary configuration diagram of an asynchronous transmission mode terminal and a server to which the present invention is applied.

As shown in the figure, the asynchronous transmission mode adapter card 110 is mounted in a terminal and a server, and supports an asynchronous transmission mode adaptation layer (AAL: ATM Adaptation Layer) 114 and a signal protocol 113 for call processing. And an application program interface (111) capable of directly accessing an asynchronous transmission mode device drive to transmit and receive software blocks and messages of the terminal and server.

The application program interface (API) 111 configures an environment in which communication with a service is started by executing an application program to perform a multimedia service function of the terminal.

The multimedia service control unit 120 is connected to the matching function in the subscriber module of the exchange to perform the multimedia service and is registered with the server under the control of a Subscriber Control Processor (SCP) mounted in the asynchronous transmission mode exchange system. It performs the semi-permanent virtual connection service control function by sending and receiving call processing function and data according to the table.

Since the call processing function of the exchange system basically processes the signal message data according to the Recommendation of the International Telecommunication Union (ITU-T), the signal processing functions of the terminal and the server are also designed according to the Recommendation of the International Telecommunications (ITU-T). It registers in the system, analyzes data, types of services, and quality of service to provide the configured services, and controls the establishment / release of connection between originating and receiving terminal and server through the semi-permanent virtual connection registered in the system.

The shared memory / state controller 140 performs state management and shared memory management of the terminal.

2 is a flowchart illustrating a semi-permanent virtual connection control method by a server according to an embodiment of the present invention.

As shown in the figure, the state of the asynchronous transmission mode terminal before the service request of the subscriber is input is a standby state (200), in which state the semi-permanent virtual connection service request is received from the subscriber (201).

When the service request is received, initialization is performed to update registration data for establishing a semi-permanent virtual connection (202), and information is transferred between the terminal and the server through the exchange system. The semi-permanent virtual connected subscriber service profile, such as the Registered Virtual Path Identifier (VPI) / Virtual Channel Identifier (VCI), is analyzed (203) and transitioned to the resource reservation / allocation state (204).

In the reserved state, the subscriber's usage time and time slot details for establishing a virtual path (VP) / virtual channel (VC) connection are reparsed to register a resource satisfying the quality of service with the switching system to establish a connection. The connection between the virtual path and the virtual channel with the asynchronous transmission mode terminal is in an inactive state, and service provision is reserved (205).

According to the service defined in the reservation state, the connection of the virtual path (VP) / virtual channel (VC) is activated so that the user's terminal is connected to the virtual path and the virtual channel, and the service is activated (206). It is possible to provide a data transmission and reception service by (207), and the subscriber may request a bandwidth change according to whether the service is registered, and when the service is completed, transition to the release state (208) to transmit and receive subscriber data. (209) transfer the subscriber equipment by releasing the resource and the virtual path and the virtual channel (210) to transition to the termination state, or wait in the inactive state if you need to service again, the semi-permanent virtual connection path is complete The channel and the channel are terminated and the service is released and the service is terminated (211).

The virtual paths and channels transitioned in the inactive state are transitioned to the active state after waiting in the reservation state and continue the semi-permanent virtual connection service.

3 is a flowchart illustrating a semi-permanent virtual connection control method by a server according to another embodiment of the present invention.

As shown in the figure, when a service request is received from the semi-permanent virtual connection subscriber in the standby state 300 (301), the asynchronous transmission terminal requests the service to the server through the switching system (302), and the server manages the server's management table. In step 303, the profile of the registration service is analyzed to determine whether the registration service matches the registration information. If it is determined that the registration information matches, the service availability and resource reservation status is transmitted to the terminal (305).

The exchange transmits and receives service data according to the registration information (306), and upon receiving a service termination request from the subscriber or server (307), performs the release procedure (308) and terminates.

As a result of the determination, if the registration information does not match, the service is transmitted to the terminal and the reason thereof, and it is determined whether the subscriber can change the service registration information (310). (311) if possible, receives change information from the subscriber (312), accepts and processes the negotiation information (313), and then transitions to the waiting state (315).

If the service registration information is not changeable subscriber or the registration information is not negotiable, the process ends (316).

4 is a detailed flowchart of a process of releasing after reserving / allocating the resources of FIG. 3 and supporting a service.

As shown in the figure, when a service request is received from the originating terminal (401), the server analyzes the registered data of the originating and receiving subscriber (402) and determines whether the registration shape of the subscriber is normal (403). Sending a service request approval message to the calling terminal (404) and reserves the resources necessary for the service (405) and sends a service request to the called terminal (406) to determine whether the recipient terminal is approved (407) service approval of the called terminal When receiving the service to perform the function according to the shape of the terminating terminal (408), when the service termination time according to the service termination request or registration shape from the originating subscriber releases the service resources (410) and initiates service termination. The call is sent to the called terminal (411). On the other hand, if the subscriber shape for the service request does not match the registration shape or if there is no service approval with the calling subscriber, the reason for no service is transmitted to the calling terminal (409) and ends.

FIG. 5 is a detailed flowchart of a service request and semi-permanent virtual connected subscriber service profile analysis process of FIG. 3.

As shown in the figure, when a server receives a service request from a calling terminal (501), it determines the shape of the calling terminal subscriber (502) determines whether it is a periodic service in the case of a reservation connection (503) If not, the service data is requested (504), the subscriber request data is received (505), the reservation and use status of the resources registered in the management table are analyzed (506), if the service is unavailable, the service is notified (508), and If the service is available, resource allocation, cycle, registration, and update are performed in the management table (511), and the service approval message according to the allocation and reservation of service resources is transmitted to the calling terminal (512) and waits.

On the other hand, in the case of periodic reservation, the reservation information is registered in the management table (509), the resource according to the registration shape is allocated (510), resource allocation, period, registration, and update in the management table (511) service resource allocation, reservation The service approval message according to the transmission to the calling terminal (512) and waits. In the case of the permanent virtual connection, the resource is allocated (510), the management table is updated (511), the service approval message according to the allocation of the service resource and the reservation is transmitted to the calling terminal (512) and waits.

There are two types of reservation mode, Occasional reservation and Periodic reservation. The reservation mode performs the service function by the timer's operation and the maximum number of used virtual paths (VP) required for the service according to the service characteristics at the time of notification, each virtual The maximum peak bit rate per route (VP), the semi-permanent virtual connection path setting as a time parameter, and the deletion time are included, and the subscriber E.164 number is registered.

The service subscriber subscribes to the general service items required for the service according to the service characteristics, and the server is the maximum virtual path (VP) that can be established at the same time between the subscribers to be served by the asynchronous transfer mode exchange and at any given time. A number of resources should be secured.

All reserved virtual paths, whether periodic or non-periodic, allocate resources after performing a registration procedure during negotiation between two terminals when a usage request occurs.

In the case of an occasional reservation, activation or deactivation occurs only once, and the activation or deactivation time is determined upon registration request.

6 is a detailed flowchart of a subscriber data transmission / reception process of FIG. 3.

As shown in the figure, the server requests the state of the terminating terminal to the exchange system (601) receives the state of the terminating terminal (602) and determines whether the state of the terminating terminal is serviceable (603). After allocating the resource of the called party to the reserved party (604), transmitting the service availability to the calling terminal (605), and performing the inter-called incoming / outgoing service (606), and notifying that the service is impossible when the incoming state is abnormal (607). ) Wait.

7 is a detailed flowchart of a service release process of FIG. 3.

As shown in the figure, when a service release request signal is received (701), the server determines whether this signal is a signal from a switching system by completion of a registration service time or a release request from a subscriber (702). In case of sending the termination request message to the originating terminal (703) and receiving the service termination response message (704), the service release response message is transmitted to the switching system (705), updating the management table (706), If it is a release request, it requests a connection establishment and resource release to the switching system (707) and receives a connection establishment release message (708), sends a service release response message to the switching system (705), updates the management table (706) Quit.

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

The present invention as described above, can provide a variety of services while minimizing the software changes in the terminal for the multimedia service communication between the originating and incoming subscribers, and the terminal and the server perform a complementary function to support in various forms when matching with the exchange It is possible to have compatibility that can be applied to the connection type, and due to the nature of the asynchronous transmission mode switching, it is possible to perform multimedia service by semi-permanent virtual connection while controlling the switch load by simultaneous multiple band allocation.

Claims (7)

When the server receives the service request from the subscriber station, analyzing the service profile of the subscriber to determine whether it matches the registered information; A second step of allocating and transmitting subscriber data by allocating resources and establishing a connection if the subscriber service profile matches the registration information as a result of the checking of the first step; And If the subscriber service profile does not match the registration information as a result of the checking of the first step, after the negotiation of the registration information change with the subscriber is repeated, the third step is repeated from the first step Semi-permanent virtual connection control method comprising a. The method of claim 1, The first step is, A fourth step of receiving, by the calling terminal, a service request from the subscriber; A fifth step of the originating terminal transmitting a service request signal to a server; The sixth step of the server analyzing a subscriber service profile; And A seventh step of checking whether the analysis result of the sixth step matches the registered information Semi-permanent virtual connection control method comprising a. The method of claim 2, The seventh step, An eighth step of checking whether the shape of the subscriber is a reserved connection or a permanent virtual connection; A ninth step of allocating a resource according to a registered shape and updating the management table if the virtual virtual connection is confirmed as the result of the eighth step; A tenth step of checking whether or not the service is a periodic service if the check result of the eighth step is a reservation connection; An eleventh step of requesting service data from the originating terminal, receiving subscriber request data from the originating terminal, analyzing and assigning available resources and registering and updating them in a management table, as a result of the checking of the tenth step; And A twelfth step of registering reservation information, allocating resources according to the registered shape, and updating a management table, when the check result of the tenth step is not periodic; Semi-permanent virtual connection control method comprising a. The method of claim 1, The first step is, A fourth step of checking whether the subscriber registration shape is normal; A fifth step of notifying that the service is not available and notifying the reason for the service unavailable when the subscriber registration form is not normal as a result of the checking of the fourth step; A sixth step of transmitting a service request acknowledgment to the calling terminal if the subscriber registration form is normal as a result of the checking in the fourth step; A seventh step of reserving and allocating the virtual path and the virtual channel bandwidth according to the service; An eighth step of transmitting a service request to a called terminal; And A ninth step of receiving an approval message of the called terminal; Semi-permanent virtual connection control method comprising a. The method of claim 4, wherein The ninth step, A tenth step of transmitting a status request message to the called terminal; An eleventh step of receiving a called party terminal status message; A twelfth step of checking whether the called terminal is normal; A thirteenth step of notifying that the service is impossible if the called terminal is not normal as a result of the checking of the twelfth step; And As a result of the check of the twelfth step, if the called terminal is normal, a fourteenth step of reserving and allocating the called-side resource Semi-permanent virtual connection control method by the server made, including. The method of claim 1, The second step, Transmitting a service availability and resource reservation status to the terminal; A fifth step of the server receiving a service release message from a subscriber; A sixth step of confirming whether the signal is a release of the request from the switching system by the completion of the registration service time; A seventh step of transmitting a termination request message to the originating and receiving terminal and receiving a service termination response message when the release request from the system is confirmed as the sixth step; An eighth step of transmitting a call setup and resource release message to the switching system and receiving a connection and resource release completion response, if it is not a release request from the switching system as a result of the checking in the sixth step; A ninth step of sending a service release response message to the switching system; And Tenth step of updating a management table Semi-permanent virtual connection control method comprising a. In the semi-permanent virtual connection control method by the server, A server, if the semi-permanent virtual connection service request is received from the subscriber, analyzing a semi-permanent virtual connection subscriber service profile; A second step of establishing a connection by reserving and allocating resources; Activating a service to transmit and receive subscriber data; And After the service is completed, the fourth step of switching to the subscriber equipment by releasing the resource, the virtual path, and the virtual channel after transitioning to the released state and ending transmission and reception of the subscriber data. Semi-permanent virtual connection control method comprising a.

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