KR20030055376A - A control method of atm pvc point to multi-point connection in open atm switching system - Google Patents

Abstract

PURPOSE: A method for controlling a PVC(Permanent Virtual Connection) point to multi-point connection in an open ATM switching system is provided to supply a spatial multicasting function and a logical multicasting function, thereby implementing an ATM PVC point to multi-point connection controlling function. CONSTITUTION: If a route connection setup command and a parameter are received(401), a WSPMCCF(Work Station PVC ptMP Connection Control Function) block checks whether a route connection setup command type and parameter information have errors(402). If so(403), the WSPMCCF block transmits an error result to a TMN(Telecommunication Management Network) agent(404), and outputs the result to an operator terminal(405). If the errors do not exist(403), the WSPMCCF block calls a middleware procedure to transmit route connection setup information(406). A PMCCF(PVC ptMP Connection Control Function) block is assigned with an MCN(Multicast Channel Number)(408), and requests VPI and VCI resource assignment(409) of a CRCF(Connection Resource Control Function) block. The CRCF block assigns VPI and VCI resources(411), and transmits results to the PMCCF block(412). The PMCCF block receives the results(413).

Description

Permanent virtual connection point-to-multipoint connection control in open ATM switching system {A CONTROL METHOD OF ATM PVC POINT TO MULTI-POINT CONNECTION IN OPEN ATM SWITCHING SYSTEM}

The present invention relates to ATM Permanent Virtual Connection (PVC) using middleware in performing operator commands for Permanent Virtual Connection (PVC) point-to-multipoint connections in an open Asynchronous Transfer Mode (ATM) switching system. A method for controlling point-to-multipoint connections.

In a conventional ATM switch, an operator may make an ATM permanent virtual connection (PVC) point-to-multipoint connection by using the processor information, the processor number, the interface module number, the link number and the virtual path identifier (VPI), and the virtual channel identifier, which are physical information of the ATM switch. With the (VCI) information, when you enter the ATM PVC Point-to-Multipoint Connection Human Machine Interface (HMI) command, the ATM PVC Point-to-Multipoint Connection Control block, which operates inside the ATM switch, is connected to the VPI and VCI resource management blocks. ATM PVC point-to-multipoint connection information was provided to the switch resource management block to enable ATM PVC point-to-multipoint connection. That is, all ATM PVC point-to-multipoint connection control is performed in the ATM switch.

Such a conventional method processes both the connection control processing portion and the switch control processing portion in the ATM switch system. The ATM switch system manufacturing method is not only time-consuming to manufacture but also very inefficient. In addition, this conventional method changes the shape of the ATM exchanger, or even different types of ATM exchanges, such that the physical shape does not apply equally, and the ATM PVC point-to-multipoint connection function must be newly adapted to the system each time. There was a problem of poor software reusability. Moreover, the conventional ATM switch only supports spatial multicasting function in which only one leaf is connected per physical link, and logical multicasting function in which multiple leaves are connected per physical link is not provided.

Accordingly, the present invention is to solve the problems of the prior art as described above, the object of the present invention is to separate the connection control processing portion and the switch control portion independently configured to provide a multi-service according to the open network control structure We also provide an ATM Permanent Virtual Connection (PVC) point-to-multipoint connection control method that can provide not only spatial multicasting but also logical multicasting with multiple leaves per physical link. To provide.

1 is a block diagram of an open ATM switch system to which the present invention is applied;

2 is a diagram illustrating a configuration and message flow between related blocks for performing ATM permanent virtual connection (PVC) point-to-multipoint connection function using middleware implemented on an open ATM switch according to the present invention.

3 is a structural diagram of a relation for performing an ATM permanent virtual connection (PVC) point-to-multipoint connection function using middleware according to the present invention.

4A-4B are a general flow diagram of ATM Permanent Virtual Connection (PVC) point-to-multipoint connectivity using middleware in accordance with the present invention.

In order to achieve the above object, the present invention provides a method for controlling a permanent point-to-point (PVC) point-to-multipoint connection in an open asynchronous transfer mode (ATM) switching system, the workstation PVC point-to-multipoint connection control block is a middleware client A first step of calling a route-side PVC point-to-multipoint connection control block of the call controller upon receiving a route connection establishment request; A second step of calling the leaf-side PVC point-to-multipoint connection control block through a middleware procedure after the root-side PVC point-to-multipoint connection control block is allocated a connection resource; A third step of the leaf-side PVC point-to-multipoint connection control block receiving and storing leaf-side connection resources, and transmitting the result to the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block has root side connection resource information and leaf side connection resource information, and is determined as a root side and leaf side general switch management protocol (GSMP) protocol label, and then establishes a root connection to the GSMP master block. Requesting a fourth step; When the root-side and leaf-side route connection settings are completed, the root-side PVC point-to-multipoint connection control block stores route-side connection information and processor position information on which leaf-side connection is established, and the workstation PVC point-to-multipoint connection control block. Notifying the result, and the workstation PVC point-to-multipoint connection control block receives a leaf connection addition command and calls the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block calls the leaf-side PVC point-to-multipoint connection control block through a middleware procedure for a new leaf connection, and the leaf-side PVC point-to-multipoint connection control block is a leaf-side connection resource. A sixth step of receiving and storing a result and transmitting the result to the root-side PVC point-to-multipoint connection control block; A seventh step in which the root-side PVC point-to-multipoint connection control block has a root-side connection leaf and a leaf-side connection resource, and is determined as a root-side and leaf-side GSMP protocol label, and requests the GSMP master block to set up leaf connection; And when the leaf connection is added by the control block of the leaf-side ATM matching module, the root-side PVC point-to-multipoint connection control block stores the processor position information to which the leaf-side connection is added, and then the workstation PVC point-to-point. And an eighth step of notifying the result to the key connection control block.

In another aspect, the present invention includes the steps of: calling a PVC point-to-multipoint connection control block of the call controller when the workstation PVC point-to-multipoint connection control block, which is a middleware client, receives a route connection establishment request; Calling the leaf-side PVC point-to-multipoint connection control block through a middleware procedure after the root-side PVC point-to-multipoint connection control block is allocated connection resources; The leaf-side PVC point-to-multipoint connection control block being allocated and stored leaf-side connection resources, and transmitting the result to the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block has root side connection resource information and leaf side connection resource information, and is determined as a root side and leaf side general switch management protocol (GSMP) protocol label, and then establishes a root connection to the GSMP master block. Requesting; When the root-side and leaf-side route connection settings are completed, the root-side PVC point-to-multipoint connection control block stores route-side connection information and processor position information on which leaf-side connection is established, and the workstation PVC point-to-multipoint connection control block. Notifying the result, and the workstation PVC point-to-multipoint connection control block receiving a leaf connection addition command and calling the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block calls the leaf-side PVC point-to-multipoint connection control block through a middleware procedure for a new leaf connection, and the leaf-side PVC point-to-multipoint connection control block is a leaf-side connection resource. Receiving and storing the result, and transmitting the result to the root-side PVC point-to-multipoint connection control block; Determining, by the root-side PVC point-to-multipoint connection control block, having a root-side connection leaf and a leaf-side connection resource and determining the root-side and leaf-side GSMP protocol labels, respectively, and requesting a GSMP master block to set up leaf connection; And when the leaf connection is added by the control block of the leaf-side ATM matching module, the root-side PVC point-to-multipoint connection control block stores the processor position information to which the leaf-side connection is added, and then the workstation PVC point-to-point. Provided is a computer readable recording medium having recorded thereon a program for executing a step of notifying the result of the result by means of the central link control block.

For ATM PVC point-to-multipoint connection, the command is instructed through a human machine interface (HMI) command used by an operator. In the present invention, a root connection establishment command is executed first, and then the same physical link or another physical link is performed. By performing leaf connection add commands, the ATM PVC point-to-multipoint connection function is controlled to support spatial and logical multicasting functions. In addition, by using the middleware interface method, ATM PVC point-to-multipoint connection control function is configured to increase reusability by making the ATM PVC point-to-multipoint connection function software of the open ATM exchange system to be implemented independent of the system. do.

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

1 is a structural diagram of an open ATM switching system to which the present invention is applied.

The open ATM switching system includes a work station module (WSM) 10, a main processor module (MPM) 20, an ATM interface module (AIM) 30, and access. Access Multiplex Module (AMM) 40, Media Gateway Module (MGM) 50, and Switch Fabric Module (SFM) 60.

The workstation module (WSM) 10 is composed of an HMI subsystem 11 and a Telecommunications Management Network (TMN) agent (12) and provides an interface between an operator and a middleware client. It processes the operator matching function and the function of calling the middleware server located in the processor constituting the main processor module (MPM) 20 by receiving HMI commands input to the operator and the TMN agent 12.

The main processor module (MPM) 20 includes an ATM call controller (ACC), an access multiplex controller (AMC) 23, a media gateway controller (MGC) 24, and Switch Management Controller (SMC) 22 is composed of a processor. The ATM call controller (ACC) 21 and the access multiplex controller (AMC) 23 serve as middleware servers for handling ATM PVC point-to-multipoint connection functions called from operator clients, as well as for the destination PVC connection. Also serves as a middleware client, the ACC 21 controls the ATM PVC point-to-multipoint connection of the switching system body, and the AMC 23 performs low-speed ATM PVC point-to-multipoint connection control. In addition, the ATM call controller (ACC) 21 and the access multiplex controller (AMC) 23 manage the UNI and NNI resources and from the SMC 22 to the AIM 30 substantially. It delivers ATM PVC point-to-multipoint connection information using GSMP protocol to request ATM PVC point-to-multipoint connection. The switch management controller (SMC) 22 performs the operation and maintenance functions, processes the ATM PVC point-to-multipoint connection information transmitted by the GSMP protocol, and uses an internal interprocessor control (IPC) AIM) to perform the function of delivering to (30).

The ATM matching module (AIM) 30 performs a fast and medium speed ATM subscriber matching function directly connected to the switching system body. The access multiplex module (AMM) 40 is connected to the AIM 30 and performs a low-speed ATM subscriber matching function. The media gateway module (MGM) 50 is connected to the AIM 30 and the CE ( Circuit Emulation) performs subscriber, N-ISDN subscriber and AAL2 subscriber matching functions.

The functions of the blocks required for ATM PVC point-to-multipoint connection are as follows.

The workstation PVC ptMp Connection Control Function (WSPMCCF) block (13) located in the workstation module (WSM) 10 corresponds to a middleware client and is passed through an operator or TMN agent. Receives route connection setup command and leaf connection additional command to check error of command format and command parameter information, and delivers the result of input HMI command to TMN agent and outputs to HMI WS. .

The PVC ptMp Connection Control Function (PMCCF) block 211 of the ATM call controller (ACC) is a middleware server function that performs the required route connection establishment and leaf connection addition function from the WSPMCCF block 13. And a connection resource control function (CRCF :), which extracts a general switch management protocol (GSMP) port required for switch control from a switch management controller (SMC) 22 and a VPI and a VCI corresponding to a GSMP label, located in the ACC 21. Resource Control Function) performs a function of requesting allocation to the block 212, and a function of requesting leaf-side connection processing to the PMCCF block 211 located in the ACC processor.

The ATM Interface Module Control Function (AIMCF) block 31 located in the AIM 30 performs ATM UNI and NNI subscriber matching functions and access multi-function of the AMM 40. The Access Multiplex Control Function (AMCF) block performs low speed ATM UNI and NNI subscriber matching. The connection resource control function (CRCF) block 212 is a block that manages VPI and VCI and bands that are UNI and NNI link resources. In addition, the GSMP Master Protocol Handling Function (GMPHF) block 213 is a GSMP slab protocol of a switch management controller (SMC) using the GSMP protocol for ATM PVC point-to-multipoint connection. It is a block required for a processing function (GSPHF: GSMP Slave Protocol Handling Function) block 221. The GSMP slab protocol processing function (GSPHF) block 221 sends GSMP protocol messages received from the GSMP master protocol processing function (GMPHF) block 213 to the GSMP slab call control function (GSCCF) block 222. To pass. The GSMP slab call control function (GSCCF) block 222 transmits the ATM PVC point-to-multipoint connection information received from the GSPHF block 221 to the AIM 30 and GSPHF the result of performing the ATM PVC point-to-multipoint connection. And to GSPHF block 221 to GMPHF block 213 using a GSMP protocol message.

FIG. 2 is a diagram illustrating a configuration and message flow between related blocks for performing an ATM PVC point-to-multipoint connection function implemented on an open ATM switch system.

ATM PVC point-to-multipoint connection control is achieved by executing the HMI command root connection establishment command and leaf connection addition command. First, when an operator or TMN agent (11, 12) enters a root connection establishment command, the HMI command inputted to the workstation PVC point-to-multipoint connection control function (WSPMCCF) block 13, which is a middleware client that performs the command, Send the parameter.

The WSPMCCF block 13 checks whether the received HMI commands and parameters are entered according to the input command format, and then checks the error of the parameter information of the HMI command, and if there is no error, the parameter information and route connection of the input HMI command With the additional information necessary to perform the setup function, the middleware procedure is called to the root side PVC point-to-multipoint connection control function (PMCCF) block 211-1 to transmit the route connection setup information.

The root side PMCCF block 211-1 is assigned a multicast channel number (MCN) in the R_MCN_INF relation in order to have a correlation between the root connection and the leaf connection. Then, the VCF and VCI resource allocation is requested from the CRCF block 212-1 for the VPI and VCI resource allocation corresponding to the root side GSMP label, and the CRCF block 212-1 provides the VPI and VCI resources. Allocate VCI resources. Then, the leaf-side PMCCF block 211-2, which is the middleware server, is called through the middleware procedure.

Leaf-side PMCCF block 211-2 requests VCF and VCI resource allocation from CRCF block 212-2 for leaf-side VPI and VCI resource allocation, and if resources are allocated from CRCF block 212-2, the leaf The side connection information is stored in the relation R_UDR_TERM_INF, which is one of the relations constituting the database, and the result of the execution is transmitted to the root side PMCCF 211-2.

The root side PMCCF block 211-2 determines the root side VPI and VCI and the leaf side VPI and VCI included in the execution result as the originating side label and the destination side label of the GSMP, and among the parameters received from the WSPMCCF block 13. The root side GSMP port number is extracted from the root side logical port number, and the leaf side GSMP port number is extracted from the leaf side logical port number. Then, the GMPHF block 213 along with the traffic parameter and band information is requested to establish a route connection.

The GMPHF block 213 receiving the route connection setting information transmits the GSPHF block 221 to the GSPHF block 221 using a GSMP protocol message, and the GSPHF block 221 transfers the received route connection setting information to the GSCCF block 222. When the GSCCF block 222 transmits the root connection establishment information to the AIMCF blocks 31-1 and 31-2 to establish the root connection, the GIMCF block 222 substantially establishes the root connection in the AIMCF block. When the AIMCF blocks 31-1 and 31-2 complete the route connection establishment, the GSCCF block 222 transmits the result to the GSCCF block 222, and the GSCCF block 222 transfers the result to the GSPHF block 221. do. In addition, the GSPHF block 221 transfers the execution result to the GMPHF block 213 using a GSMP protocol message. The GMPHF block 213 transfers the execution result received from the GSPHF block 221 to the root-side PMCCF block 211-1, and the root-side PMCCF block 211-1 is a processor in which root-side connection information and leaf connection are established. The location information is stored in the R_SPC_INF relation and then returned to the WSPPCCF block 13 with the execution result. The WSPPCCF block 13 transmits the returned execution result to the TMN agent and outputs to the operator terminal.

Next, when the operator or TMN agent inputs a leaf connection add command, the HMI command and the parameter are transmitted to the WSPMCCF block 13. At this time, the root-side VPI and VCI parameters use the root-side VPI and VCI assigned when the root connection establishment command is executed. The WSPMCCF block 13 checks whether the received HMI commands and parameters are entered according to the input command format, and then checks the error of the parameter information of the HMI command, and if there is no error, connects the parameter information and leaf of the input HMI command. With the additional information necessary to perform the additional function, the middleware procedure is called to the root side PMCCF block 211-1 to convey leaf connection additional information.

In the root-side PMCCF block 211-1, the root-side VPI and VCI parameters are used as they are, and the leaf-side PMCCF block 211-2 is used as a middleware pro for requesting allocation of the leaf-side VPI and VCI. Call through the procedure.

The leaf side PMCCF block 211-2 requests the CRCF block 212-2 to allocate the VPI and VCI resources for leaf side VPI and VCI resource allocation, and if resources are allocated from the CRCF block 212-2, the leaf side The connection information is stored in the R_UDR_TERM_INF relation, and then returned with the execution result including the leaf-side VPI and VCI newly allocated to the root-side PMCCF block 211-1.

The root-side PMCCF block 211-1 determines the root-side VPI and VCI and the newly assigned leaf-side VPI and VCI used at the time of establishing the route connection as the calling party label and the called party label of the GSMP, and the WSPMCCF block 13 The root side GSMP port number is extracted from the root side logical port number and the leaf side GSMP port number is extracted from the leaf side logical port number. Then, the GMPHF block, along with the traffic parameters and band information, is required to set up leaf connection additionally.

The GMPHF block 213 receiving the leaf connection additional information transmits to the GSPHF block 221 using the GSMP protocol message, and the GSPHF block 221 transmits the received leaf connection additional information to the GSCCF block 222. The GSCCF block 222 transmits leaf connection additional information to the AIMCF blocks 31-1 and 31-2 to add leaf connections so that leaf connections are substantially added in the AIMCF block. When the AIMCF blocks 31-1 and 31-2 complete the addition of the leaf connection, the result of the execution is transmitted to the GSCCF block 222, and the GSCCF block 222 transmits the result to the GSPHF block 221. The GSPHF block 221 transfers the execution result to the GMPHF block 213 using a GSMP protocol message.

The GMPHF block 213 transfers the execution result received from the GSPHF block 221 to the root-side PMCCF block 211-1, and the root-side PMCCF block 211-1 transmits the processor position information to which the leaf connection is added, R_SPC_INF. After storing in the relation, it returns to the WSPPCCF block 13 with the result of the execution. The WSPPCCF block 13 delivers the returned performance result to the TMN agent and outputs it to the operator terminal.

3 is a structural diagram of a database for performing a low-speed ATM PVC point-to-multipoint connection function according to the present invention.

The database for ATM PVC point-to-multipoint connection control consists of an R_SPC_INF relation that stores root connection information, an R_UDR_TERM_INF relation that stores leaf connection information, and an R_MCN_INF relation that contains MCN information. The R_SPC_INF relation is IN_LPORT, which is the root-side logical port number, IN_VPI and IN_VCI, which is the root-side VPI / VCI, OUT_LPORT, which is the leaf-side logical port number, OUT_VPI and OUT_VCI, which is the leaf-side VPI / VCI, and CONN_TYPE that distinguishes VC and VP connections as a connection type. FWD_COMB for forward traffic combinations, FWD_PCR for forward PCR, SCR, MBS, CDVT, FWD_SCR, FWD_MBS, FWD_CDVT, CONN_ST for connection status, UPC_ACT for UPC_ACT activation, deactivation of UPC, association of root and leaf connections It consists of MCN which indicates and LEAF_POR which indicates the position of the processor to which the leaf is connected.

The R_UDR_TERM_INF relation is IN_LPORT, which is the leaf-side logical port number, IN_VPI and IN_VCI, which is the leaf-side VPI / VCI, OUT_LPORT, which is the root-side logical port number, OUT_VPI and OUT_VCI, which is the root-side VPI / VCI, and CONN_TYPE that distinguishes VC and VP connections as the connection type. BWD_COMB for Reverse Traffic Combination, BWD_PCR for Reverse SCR, MBS, CDVT, BWD_PCR, BWD_SCR, BWD_MBS, BWD_CDVT, CONN_ST for Connection Status, SHAP_ACT for SHAPER Activation and Deactivation, Root Connection to Leaf Connection It consists of MCN shown.

The R_MCN_INF relation is composed of a MCN and a SERVICE indicating whether the MCN is allocated.

4A-4F are a general flow diagram of an ATM PVC point-to-multipoint connection control function implemented on an open ATM switch according to the present invention.

When the root connection establishment command and parameters input from the operator or the TMN agent are received by the WSPMCCF block which is the middleware client (401), the WSPMCCF block checks the error of the root connection establishment command format and parameter information (402). If the check result is an error (403), the error result is transmitted to the TMN agent (404), and output to the operator terminal (405). As a result of the check, if there is no error (403), parameter information of the input route connection establishment command and additional information necessary to perform the route connection establishment function are called, and the middleware procedure is called to the root side PMCCF block and the route connection establishment information is transmitted. (406).

Receiving the root connection information (407), the root side PMCCF block is assigned a multicast channel number (MCN) in the R_MCN_INF relation (408). Then, the VCF and VCI resource allocation is requested from the CRCF block for VPI and VCI resource allocation corresponding to the root side GSMP label (409).

The CRCF block receiving the VPI and VCI resource allocation request (410) allocates the VPI and VCI resources (411), and transmits the execution result to the root-side PMCCF block (412). Upon receiving the execution result from the CRCF block (413), the root-side PMCCF block delivers leaf-side connection information including the MCN to the leaf-side PMCCF block, which is the middleware server, for setting up the leaf-side connection (414).

Receiving leaf-side connection information (415), the leaf-side PMCCF block requests (416) VPI and VCI resource allocation from the CRCF block for leaf-side VPI and VCI resource allocation. Having received the VPI and VCI resource allocation request (417), the CRCF block allocates (418) the VPI and VCI resources and conveys the result of the execution to the leaf side PMCCF block (419).

The leaf side PMCCF block receiving the execution result from the CRCF block (420) stores the leaf side connection information in the R_UDR_TERM_INF relation (421), and returns to the root side PMCCF block with the execution result (422). Receiving the execution result (423), the root-side PMCCF block determines the root-side VPI and VCI and leaf-side VPI and VCI included in the execution result as the source label and the destination label of the GSMP, and among parameters received from the WSPMCCF block. Extracting the root-side GSMP port number from the root-side logical port number, extracting the leaf-side GSMP port number from the leaf-side logical port number, and then requesting the GMPHF block with the traffic parameters and band information to establish the route connection (424). ).

The GMPHF block receiving the route connection configuration information (425) transmits the route connection configuration information to the GSPHF block using the GSMP protocol message (426), and the GSPHF block (427) delivers the received route connection configuration information to the GSCCF block. (428).

The GSCCF block having received the root connection establishment information (429) transmits the root connection establishment information to the AIMCF block (430) to establish the root connection establishment. The AIMCF block that has received the root connection establishment information (431) substantially establishes a root connection (432). When the AIMCF block completes the root connection establishment, it transmits the result to the GSCCF block (433), and receives the result from the AIMCF block (434), the GSCCF block forwards the result to the GSPHF block (435). The GSPHF block having received the result of the execution (436) transmits the result of the execution to the GMPHF block using the GSMP protocol message (437).

The GMPHF block forwards the execution result received from the GSPHF block (438) to the root side PMCCF (439). Upon receiving the execution result from the GMPHF block (440), the root-side PMCCF stores the root-side connection information and the processor position information on which the leaf-side connection is set in the R_SPC_INF relation (441), and returns to the WSPPCCF block with the execution result (442). .

The WSPPCCF block sends (444) the result of the execution of the returned route connection establishment command to the TMN agent and outputs (445) the operator terminal.

As described above, if the operator or the TMN agent inputs the leaf connection addition command after the root connection establishment command is completed, the leaf connection addition command and parameters input to the WSPMCCF block are transmitted (446). The WSPMCCF block checks for errors in the leaf connection add command format and parameter information received (447). If the check result is an error (448), the error result is transmitted to the TMN agent (449), and output to the operator terminal (450). If there is no error (447), the parameter information of the input connection addition instruction and the additional information necessary to perform the leaf connection addition function are called and the leaf connection additional information is transmitted to the root side PMCCF block by calling the middleware procedure (451).

The Root-side PMCCF block receiving leaf connection additional information (452) uses the Root-side VPI and VCI parameters as it is, and the Multicast Channel Number (MCN) for leaf-side VPI and VCI allocation requests. The leaf connection additional information including the information is transmitted to the leaf side PMCCF block (453). The leaf-side PMCCF block receiving the leaf connection supplementary information (454) requests the VCF and VCI resource allocation from the CRCF block (455) for the leaf-side VPI and VCI resource allocation. The CRCF block receiving the VPI and VCI resource allocation request (456) allocates the VPI and VCI resources (457), and transmits the result of the execution to the leaf-side PMCCF block (458).

The leaf side PMCCF block having received the execution result (459) stores the leaf side connection information in the R_UDR_TERM_INF relation (460), and returns with the execution result including the leaf side VPI and VCI newly assigned to the root side PMCCF (461). ). After receiving the result of the execution (462), the root-side PMCCF block determines the root-side VPI and VCI and the newly allocated leaf-side VPI and VCI, which are used at the time of establishing a root connection, as the source and destination labels of the GSMP, and the WSPMCCF block. Extract the root-side GSMP port number from the root-side logical port number among the parameters received from the node, extract the leaf-side GSMP port number from the leaf-side logical port number, and add leaf connections to the GMPHF block along with the traffic parameters and band information. A setup request is made (463).

The GMPHF block receiving the leaf connection additional information (464) transmits the leaf connection additional information to the GSPHF block using the GSMP protocol message (465), and the GSPHF block transmits the received leaf connection additional information to the GSCCF block (466). (467). Receiving leaf connection additional information (468), the GSCCF block transmits leaf connection additional information to the AIMCF block (469) for leaf connection addition. The AIMCF block that has received the leaf connection additional information (470) substantially adds the leaf connection (471). When the AIMCF block completes adding leaf connections, the GSCCF block transmits the result of performing the operation to the GSCCF block (472), and receives the result of the execution from the AIMCF block (473), and sends the result to the GSPHF block (474). The GSPHF block having received the result of the execution (475) transfers the result of the execution to the GMPHF block using a GSMP protocol message (476). The GMPHF block transmits the execution result received from the GSPHF block (477) to the root side PMCCF (478). Receiving the execution result from the GMPHF block (479), the root side PMCCF stores the processor position information to which the leaf connection is added in the R_SPC_INF relation (480), and returns to the WSPPCCF block with the execution result (481). The WSPPCCF block passes the result of the execution of the returned root connection establishment command (482) to the TMN agent (483) and outputs (484) the operator terminal.

According to the present invention as described above, it is possible to provide a logical multicasting function in which multiple leaves are connected to a physical link as well as spatial multicasting in which only one leaf is connected per physical link. It is very efficient to develop ATM PVC point-to-multipoint program by application, and it is possible to reuse ATM program because it can realize ATM PVC point-to-multipoint connection control function with minimal influence on the hardware or operating system of exchange. There is an effect to increase the sex.

Claims (6)

A method for controlling a Permanent Virtual Connection (PVC) point-to-multipoint connection in an open Asynchronous Transfer Mode (ATM) switching system, A first step of calling the PVC side-to-multipoint connection control block of the call controller when the workstation PVC point-to-multipoint connection control block, which is a middleware client, receives a request for establishing a route connection; A second step of calling the leaf-side PVC point-to-multipoint connection control block through a middleware procedure after the root-side PVC point-to-multipoint connection control block is allocated a connection resource; A third step of the leaf-side PVC point-to-multipoint connection control block receiving and storing leaf-side connection resources, and transmitting the result to the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block has root side connection resource information and leaf side connection resource information, and is determined as a root side and leaf side general switch management protocol (GSMP) protocol label, and then establishes a root connection to the GSMP master block. Requesting a fourth step; When the root-side and leaf-side route connection settings are completed, the root-side PVC point-to-multipoint connection control block stores route-side connection information and processor position information on which leaf-side connection is established, and the workstation PVC point-to-multipoint connection control block. Notifying the result, and the workstation PVC point-to-multipoint connection control block receives a leaf connection addition command and calls the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block calls the leaf-side PVC point-to-multipoint connection control block through a middleware procedure for a new leaf connection, and the leaf-side PVC point-to-multipoint connection control block is a leaf-side connection resource. A sixth step of receiving and storing a result and transmitting the result to the root-side PVC point-to-multipoint connection control block; A seventh step in which the root-side PVC point-to-multipoint connection control block has a root-side connection leaf and a leaf-side connection resource, and is determined as a root-side and leaf-side GSMP protocol label, and requests the GSMP master block to set up leaf connection; And When a leaf connection is added by the control block of the leaf-side ATM matching module, the root-side PVC point-to-multipoint connection control block stores processor position information to which the leaf-side connection is added, and then the workstation PVC point-to-multipoint connection And a eighth step of notifying the result of the result to the control block. The method of claim 1, In the second step, the root-side PVC point-to-multipoint connection control block stores a multicast channel number in order to have a correlation between a root connection and leaf connections generated by performing a route connection setting command and a leaf connection addition command. Permanent virtual connection point-to-multipoint connection control method characterized by being assigned a multicast channel number in the relation. The method according to claim 1 or 2, In the fourth step, the root-side PVC point-to-multipoint connection control block receives the root- and leaf-side GSMP port numbers from the root- and leaf-side logical port numbers among the parameters transmitted from the workstation PVC point-to-multipoint connection control block. And extracting each, and then requesting the connection establishment of the route to the GSMP master block along with the traffic parameters and the band information. The method of claim 3, The root-side PVC point-to-multipoint connection control block that receives leaf connection additional information from the workstation PVC point-to-multipoint connection control block in step 6 is a root-side connection resource from the workstation PVC point-to-multipoint connection control block. Permanent virtual connection point-to-multipoint connection control method, characterized in that it uses the transmitted route-side connection resource parameters as it is. The method of claim 4, wherein In the seventh step, the root-side PVC point-to-multipoint connection control block receives the root- and leaf-side GSMP port numbers from the root- and leaf-side logical port numbers among the parameters transmitted from the workstation PVC point-to-multipoint connection control block. And extracting each request and requesting additional setting of leaf connection to GSMP master block with traffic parameter and band information. On the computer, Invoking the PVC side-to-multipoint connection control block of the call controller when the workstation PVC point-to-multipoint connection control block, which is a middleware client, receives a route connection establishment request; Calling the leaf-side PVC point-to-multipoint connection control block through a middleware procedure after the root-side PVC point-to-multipoint connection control block is allocated connection resources; The leaf-side PVC point-to-multipoint connection control block being allocated and stored leaf-side connection resources, and transmitting the result to the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block has root side connection resource information and leaf side connection resource information, and is determined as a root side and leaf side general switch management protocol (GSMP) protocol label, and then establishes a root connection to the GSMP master block. Requesting; When the root-side and leaf-side route connection settings are completed, the root-side PVC point-to-multipoint connection control block stores route-side connection information and processor position information on which leaf-side connection is established, and the workstation PVC point-to-multipoint connection control block. Notifying the result, and the workstation PVC point-to-multipoint connection control block receiving a leaf connection addition command and calling the root-side PVC point-to-multipoint connection control block; The root-side PVC point-to-multipoint connection control block calls the leaf-side PVC point-to-multipoint connection control block through a middleware procedure for a new leaf connection, and the leaf-side PVC point-to-multipoint connection control block is a leaf-side connection resource. Receiving and storing the result, and transmitting the result to the root-side PVC point-to-multipoint connection control block; Determining, by the root-side PVC point-to-multipoint connection control block, having a root-side connection leaf and a leaf-side connection resource and determining the root-side and leaf-side GSMP protocol labels, respectively, and requesting a GSMP master block to set up leaf connection; And When a leaf connection is added by the control block of the leaf-side ATM matching module, the root-side PVC point-to-multipoint connection control block stores processor position information to which the leaf-side connection is added, and then the workstation PVC point-to-multipoint connection A computer-readable recording medium having recorded thereon a program for executing a step of notifying a result of the result to a control block.